2004AJ....128.2316S


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.16CEST13:41:34

2004AJ....128.2316S - Astron. J., 128, 2316-2330 (2004/November-0)

Photometric identification of the low-mass population of Orion OB1b. I. The σ Orionis cluster.

SHERRY W.H., WALTER F.M. and WOLK S.J.

Abstract (from CDS):

We report an optical photometric survey of 0.89 deg2 of the Orion OB1b association centered on σ Ori. This region includes most of the σ Ori cluster, the highest-density region within Orion OB1b. We have developed a statistical procedure to identify the young, low-mass, pre-main-sequence population of the association. We estimate that the cluster has ∼160 members in the mass range (0.2≤M≤1.0 M). The cluster has a radius of ∼3-5 pc and an estimated age of 2.5±0.3 Myr. We estimate that the total mass of the cluster is 225±30 M. This mass is similar to the estimated mass of the ∼5x105 yr old cluster NGC 2024. NGC 2024 and σ Ori appear to be a well-matched pair of clusters, except for the ∼2 Myr difference in their ages.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual (σ Orionis) - Stars: Formation - Stars: Imaging - Stars: Low-Mass, Brown Dwarfs - Stars: Pre-Main-Sequence

VizieR on-line data: <Available at CDS (J/AJ/128/2316): table3.dat table4.dat>

Nomenclature: Table 4: [SWW2004] JHHMMSS.sss+DDMMSS.ss N=234.

Simbad objects: 262

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Number of rows : 262

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 IC 348 OpC 03 44 34 +32 09.8           ~ 1252 1
2 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 241 0
3 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2050 1
4 Cl Collinder 69 OpC 05 35 06 +09 56.0     2.8     ~ 240 0
5 NAME Ori Sword Cl* 05 35 10 -05 12.0           ~ 12 0
6 NGC 1977 SFR 05 35 16.0 -04 49 15           ~ 193 0
7 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1505 1
8 M 42 HII 05 35 17.3 -05 23 28           ~ 3787 0
9 Ass Ori OB 1c As* 05 35 21 -05 20.5           ~ 129 1
10 OMC 2 MoC 05 35 27 -05 10.1           ~ 404 1
11 2MASS J05354998-0235454 Y*O 05 35 49.9841034062 -02 35 45.402493219   19.40 18.19 17.01 15.58 ~ 1 0
12 2MASS J05355322-0232500 Y*O 05 35 53.2239276586 -02 32 50.144836030   17.99 16.52 15.38 14.04 ~ 3 0
13 2MASS J05360236-0236279 Y*O 05 36 02.3684194307 -02 36 27.877586057   20.07 18.51 17.11 15.41 ~ 3 0
14 2MASS J05360604-0245320 Y*O 05 36 06.0480232124 -02 45 32.031606262   17.09 15.64 14.62 13.54 ~ 1 0
15 2MASS J05361267-0240152 Y*O 05 36 12.68 -02 40 15.2   18.88 17.31 16.04 14.46 ~ 1 0
16 * eps Ori s*b 05 36 12.81335 -01 12 06.9089 0.48 1.51 1.69 1.76 1.93 B0Ia 867 0
17 NAME LDN 1641 North HII 05 36 17.6 -06 22 10           ~ 221 0
18 2MASS J05362199-0239587 Y*O 05 36 21.9964829756 -02 39 58.769025839   18.30 16.75 15.72 14.54 ~ 1 0
19 2MASS J05362876-0232591 Y*O 05 36 28.7760304233 -02 32 59.067218223   20.30 18.84 17.39 15.60 ~ 2 0
20 2MASS J05362908-0235482 Y*O 05 36 29.0964832682 -02 35 48.219005526   17.47 15.97 14.94 13.76 ~ 4 0
21 2MASS J05364254-0240267 Y*O 05 36 42.5446930399 -02 40 26.767208594   19.69 18.23 16.91 15.33 ~ 2 0
22 2MASS J05364264-0220506 Y*O 05 36 42.6482310110 -02 20 50.639672807   19.00 17.49 16.26 14.77 ~ 2 0
23 2MASS J05364691-0233282 Y*O 05 36 46.9156799855 -02 33 28.350971976   20.07 18.45 17.02 15.27 ~ 8 0
24 2MASS J05364928-0243544 Y*O 05 36 49.2853762905 -02 43 54.432628554   19.20 17.72 16.47 14.93 ~ 4 0
25 2MASS J05364980-0214388 Y*O 05 36 49.8044157443 -02 14 38.787250169   16.88 15.22 14.29 13.46 ~ 3 0
26 2MASS J05364997-0235226 Y*O 05 36 49.9776141305 -02 35 22.680351979   20.05 18.45 17.12 15.49 ~ 2 0
27 2MASS J05365019-0247099 Y*O 05 36 50.1970631246 -02 47 10.019803174   18.00 16.52 15.44 14.20 ~ 4 0
28 2MASS J05365060-0218586 Y*O 05 36 50.6121119511 -02 18 58.667884488   18.74 17.23 16.18 15.07 ~ 1 0
29 2MASS J05365976-0214524 Y*O 05 36 59.7708847265 -02 14 52.421768470   17.85 16.33 15.30 14.20 ~ 1 0
30 2MASS J05370030-0228265 Y*O 05 37 00.3024795456 -02 28 26.573357733   19.18 17.74 16.45 14.88 ~ 5 0
31 ESO-HA 1576 Y*O 05 37 03.0014538297 -02 50 49.062558405   18.61 17.23 16.04 14.58 ~ 6 0
32 2MASS J05370500-0241036 Y*O 05 37 05.0025148342 -02 41 03.675315497   19.86 18.30 17.10 15.68 ~ 2 0
33 2MASS J05371167-0231566 Y*O 05 37 11.6781367074 -02 31 56.655414944   19.88 18.30 16.94 15.23 ~ 5 0
34 2MASS J05371222-0203464 Y*O 05 37 12.2150543548 -02 03 46.614133682   18.34 15.56 13.55 13.19 ~ 1 0
35 2MASS J05371515-0242015 Y*O 05 37 15.1564373479 -02 42 01.648395822   19.64 18.12 16.85 15.23 M4e 8 0
36 2MASS J05371815-0226150 Y*O 05 37 18.1605992264 -02 26 15.039127025   18.81 17.25 16.01 14.51 ~ 2 0
37 2MASS J05371832-0254093 Y*O 05 37 18.3275591360 -02 54 09.379132016   19.63 18.13 16.83 15.21 ~ 4 0
38 2MASS J05371869-0240218 Y*O 05 37 18.703008 -02 40 21.95616   16.70 15.33 14.95 13.26 M1.5 7 0
39 Haro 5-6 Y*O 05 37 22.5487550126 -02 59 36.404185316   16.47 15.06 14.13 13.15 ~ 8 0
40 2MASS J05372306-0232465 Y*O 05 37 23.0641016604 -02 32 46.579040510   19.97 18.42 17.18 15.65 M3.0 7 0
41 2MASS J05372426-0219075 Y*O 05 37 24.2762771904 -02 19 07.591592761   16.18 14.74 13.77 12.78 M1.0 5 0
42 2MASS J05372522-0216047 Y*O 05 37 25.2244027063 -02 16 04.820291965   19.40 17.82 16.59 15.12 ~ 3 0
43 2MASS J05372831-0224182 Y*O 05 37 28.3206860109 -02 24 18.274998056   19.31 18.11 16.75 15.34 M3.0 5 0
44 2MASS J05372912-0240200 Y*O 05 37 29.1323984553 -02 40 20.066587937   18.48 18.15 17.04 15.44 ~ 3 0
45 Haro 5-5 Y*O 05 37 30.9498956537 -02 23 42.804953068   18.33 17.11 15.91 14.51 M2.0 15 0
46 2MASS J05373153-0224269 Y*O 05 37 31.536 -02 24 26.96   17.32 15.85 14.72 13.45 M3 10 0
47 2MASS J05373316-0253360 Y*O 05 37 33.1623485147 -02 53 36.018945520   16.63 14.95 13.99 13.10 G7.5 6 0
48 2MASS J05373645-0214375 Y*O 05 37 36.4524827054 -02 14 37.549127913   16.96 15.48 14.39 13.08 M2.5 6 0
49 2MASS J05373666-0234003 Y*O 05 37 36.6687358091 -02 34 00.304974881   18.61 17.03 15.85 14.46 M3.0 9 0
50 2MASS J05373784-0245442 Y*O 05 37 37.8477473334 -02 45 44.267944120   17.74 16.25 15.23 14.01 M2.0 8 0
51 HD 37333 Y*O 05 37 40.4746928699 -02 26 36.841198403   8.59 8.51   8.420 A1Va(Si) 41 0
52 2MASS J05374060-0208577 Y*O 05 37 40.6050318124 -02 08 57.672558340   19.35 18.09 16.74 15.00 ~ 2 0
53 2MASS J05374239-0159367 Y*O 05 37 42.3946001907 -01 59 36.751374959   19.45 17.98 16.70 15.07 ~ 1 0
54 2MASS J05374353-0209053 Y*O 05 37 43.5355789482 -02 09 05.399829808   18.59 17.02 15.86 14.47 ~ 2 0
55 2MASS J05374477-0212534 Y*O 05 37 44.7791804341 -02 12 53.467544448   18.34 16.86 15.72 14.36 ~ 6 0
56 2MASS J05374527-0228521 Y*O 05 37 45.2701789846 -02 28 52.154311275   20.13 18.76 17.26 15.61 M4.5 7 0
57 CVSO 1782 TT* 05 37 48.0299222462 -02 04 03.881445275   17.84 16.45 15.26 13.79 ~ 3 0
58 2MASS J05374847-0209064 Y*O 05 37 48.4774584476 -02 09 06.477704924   20.07 18.64 17.25 15.54 ~ 1 0
59 2MASS J05374960-0302480 Y*O 05 37 49.5971626379 -03 02 47.982314390   20.37 19.02 17.48 15.63 ~ 3 0
60 2MASS J05375031-0212247 Y*O 05 37 50.3168024767 -02 12 24.763440537   20.25 18.56 17.20 15.53 ~ 7 0
61 2MASS J05375161-0235257 Y*O 05 37 51.6119417355 -02 35 25.695389711 18.636   15.64 14.56 13.34 M2.0 19 0
62 2MASS J05375188-0208411 Y*O 05 37 51.8812735927 -02 08 41.109222335   19.55 17.99 16.77 15.22 ~ 1 0
63 2MASS J05375210-0256551 Y*O 05 37 52.1052799123 -02 56 55.173737641   20.20 18.58 17.10 15.24 ~ 8 0
64 2MASS J05375220-0233379 Y*O 05 37 52.2095629124 -02 33 37.968268838   18.55 16.89 15.74 14.41 M3.0 10 0
65 ESO-HA 1638 Em* 05 37 53.9797574895 -02 49 54.532458295   20.07 18.47 17.19 15.71 M2.5: 12 0
66 2MASS J05375404-0244407 Y*O 05 37 54.0485032281 -02 44 40.720127081   18.58 17.07 15.90 14.48 M3.0 10 0
67 2MASS J05375486-0241092 Y*O 05 37 54.8667166688 -02 41 09.234610591   19.68 18.34 17.14 15.43 M5.0 13 0
68 2MASS J05375512-0227362 Y*O 05 37 55.1236852740 -02 27 36.280596475   20.55 18.49 17.18 15.38 ~ 9 0
69 2MASS J05375593-0255180 Y*O 05 37 55.9382594022 -02 55 18.062808224   18.13 16.67 15.56 14.23 ~ 5 0
70 2MASS J05375613-0209266 Y*O 05 37 56.1345612770 -02 09 26.675157903   20.64 18.92 17.49 15.68 ~ 8 0
71 2MASS J05375647-0243574 Y*O 05 37 56.4763020247 -02 43 57.472282381   18.22 16.78 15.67 14.34 M2.5 7 0
72 2MASS J05375840-0241262 Y*O 05 37 58.4019434737 -02 41 26.231984391   21.06 18.63 17.26 15.31 M5.5 16 0
73 2MASS J05375890-0226559 Y*O 05 37 58.9047009793 -02 26 56.088070682   19.76 18.65 17.49 15.64 ~ 1 0
74 NAME Ori I As* 05 38 -02.8           ~ 567 0
75 2MASS J05380055-0245097 Y*O 05 38 00.5578886577 -02 45 09.801780591   19.09 17.61 16.31 14.54 M5.0 13 0
76 2MASS J05380097-0226079 Y*O 05 38 00.9734866441 -02 26 07.933966500   18.08 16.71 15.57 14.27 M2.5 14 0
77 Haro 5-7 Y*O 05 38 01.0752774425 -02 45 38.012747935   18.61 17.38 15.97 14.24 M4.5 21 0
78 2MASS J05380167-0225527 Y*O 05 38 01.6745949103 -02 25 52.785231427   18.71 17.21 16.01 14.54 ~ 12 0
79 CVSO 1794 TT* 05 38 02.6094999604 -02 04 44.589798999   16.45 15.06 14.16 13.24 ~ 6 0
80 [BNM2013] 93.03 85 LM* 05 38 05.6711186446 -02 40 19.489804802   17.96 16.43 15.34 14.07 M2.5 10 0
81 Kiso A-0904 67 Y*O 05 38 06.7457000396 -02 30 22.747725674 17.703 16.46 15.08 14.08 13.14 M1 18 0
82 Kiso A-0976 316 Y*O 05 38 08.2659827813 -02 35 56.278344564 18.050   16.19 15.08 13.76 M2.5 19 0
83 2MASS J05380897-0220109 Y*O 05 38 08.9765709253 -02 20 10.968399942   19.15 17.66 16.41 14.85 M3.5 11 0
84 ESO-HA 1656 Y*O 05 38 09.9454102649 -02 51 37.758171853   17.81 16.40 15.25 13.93 M3.0 14 0
85 2MASS J05381104-0256018 Y*O 05 38 11.0421713406 -02 56 01.903178566   17.28 15.83 14.73 13.46 ~ 5 0
86 Haro 5-8 Y*O 05 38 13.1535716687 -02 45 51.064632627   16.87 15.73 14.65 13.47 M1.5 20 0
87 2MASS J05381319-0226088 Y*O 05 38 13.1972684896 -02 26 08.655719751   18.41 16.92 15.67 14.10 M4.5 19 0
88 NAME Ori A MoC 05 38 -07.1           ~ 2756 0
89 2MASS J05381445-0213156 Y*O 05 38 14.4587465888 -02 13 15.743420375   18.68 17.19 16.14 14.99 ~ 3 0
90 2MASS J05381453-0210152 Y*O 05 38 14.5375265733 -02 10 15.291832301   18.22 16.75 15.50 13.98 ~ 6 1
91 CVSO 1808 TT* 05 38 14.8735317647 -02 00 57.164133354   17.77 16.29 15.23 14.02 ~ 5 0
92 2MASS J05381546-0203067 Y*O 05 38 15.4607082498 -02 03 06.826848841   18.08 16.57 15.51 14.28 ~ 2 0
93 2MASS J05381610-0238049 Y*O 05 38 16.1011615792 -02 38 04.983070440 20.46 19.65 18.09 16.77 15.09 M3.5 16 0
94 2MASS J05381746-0209236 Y*O 05 38 17.4659216538 -02 09 23.668394553   19.64 18.10 16.70 14.96 ~ 8 0
95 2MASS J05381778-0240500 Y*O 05 38 17.783 -02 40 50.07 18.94 19.81 18.14 16.76 14.94 M5.0 16 0
96 2MASS J05381817-0158427 Y*O 05 38 18.1374596130 -01 58 42.904928377   20.06 18.42 17.15 15.58 ~ 2 0
97 2MASS J05381816-0243349 Y*O 05 38 18.1665177096 -02 43 35.005077454   20.17 18.63 17.49 16.01 ~ 5 0
98 2MASS J05381824-0248143 Y*O 05 38 18.2441377133 -02 48 14.390922574   18.14 16.68 15.54 14.15 M3.0 13 0
99 Kiso A-0976 326 TT* 05 38 18.8584836414 -02 51 38.943797804   18.20 16.81 15.65 14.25 M2.5 18 0
100 2MASS J05381933-0232041 Y*O 05 38 19.3354052186 -02 32 04.181376772   19.71 18.85 17.28 15.99 ~ 1 0
101 [W96] rJ053820-0237 LM* 05 38 20.2123829592 -02 38 01.664475774   19.07 17.47 16.08 14.27 M4-5e 21 0
102 [W96] rJ053820-0234 TT* 05 38 20.5032054815 -02 34 08.977031521   20.99 19.39 17.68 15.74 M4e 24 0
103 2MASS J05382119-0254110 Y*O 05 38 21.1939172550 -02 54 11.143049959   19.60 18.21 16.68 14.82 M5.5 12 0
104 Kiso A-0976 327 Y*O 05 38 22.5460531174 -03 11 56.666235028   16.73 15.89 14.94 13.83 ~ 8 0
105 2MASS J05382307-0236493 Y*O 05 38 23.077 -02 36 49.37 18.99 19.61 18.45 17.01 15.64 M4.5 15 0
106 2MASS J05382332-0244142 Y*O 05 38 23.3263183742 -02 44 14.244475300 20.38 19.75 18.18 16.84 15.12 M4.0 15 0
107 V* V2725 Ori Or* 05 38 23.3367448676 -02 25 34.603396389   19.60 18.40 17.22 15.69 M2.0 16 0
108 2MASS J05382354-0241317 Y*O 05 38 23.5472673302 -02 41 31.789104304 20.86 19.93 18.35 16.89 15.07 M4.5 18 0
109 V* V2726 Ori Or* 05 38 23.5906623286 -02 20 47.642532104   19.81 18.64 17.14 15.32 M5.5 19 0
110 2MASS J05382364-0301331 Y*O 05 38 23.6675804900 -03 01 33.622493054   18.08 16.57 15.42 14.04 ~ 4 0
111 2MASS J05382503-0213162 Y*O 05 38 25.0313223957 -02 13 16.233505420   18.93 17.44 16.22 14.75 ~ 7 0
112 2MASS J05382549-0210228 Y*O 05 38 25.493448 -02 10 23.05632   17.46 15.76 15.41 13.45 ~ 7 0
113 V* V2730 Ori TT* 05 38 26.5689246713 -02 12 17.475390411   16.50 15.12 14.20 13.31 K6 11 0
114 Kiso A-0976 329 TT* 05 38 27.5111635459 -02 35 04.229527586 18.90 18.59 17.17 15.92 14.37 M3.5e 24 0
115 [BNM2013] 93.03 46 LM* 05 38 27.7454293497 -02 43 01.010077326     16.29 15.00 13.67 M3.0 13 0
116 [SWW2004] J053828.314-030027.85 Y*O 05 38 28.3224223472 -03 00 28.182948959   19.27 18.09 17.07 15.39 ~ 1 0
117 [SWW2004] J053828.389-023043.04 Y*O 05 38 28.389 -02 30 43.04     16.05 13.90 13.43 ~ 1 0
118 ESO-HA 1669 Y*O 05 38 28.4333694464 -03 00 26.064874721   19.22 17.82 16.49 14.81 ~ 4 0
119 2MASS J05382848-0246170 Y*O 05 38 28.4811023401 -02 46 17.146463888     17.72 16.26 15.06 ~ 5 0
120 2MASS J05382864-0211157 Y*O 05 38 28.6458944927 -02 11 15.806855438   19.59 17.90 16.62 14.89 ~ 4 0
121 [W96] rJ053828-0236 LM* 05 38 29.1237254077 -02 36 02.756654301 19.390 17.83 16.28 15.22 13.98 M1.5 14 0
122 V* V2733 Ori Or* 05 38 29.9565996061 -02 15 40.641699750   19.27 17.66 16.46 14.97 ~ 7 0
123 Haro 5-11 TT* 05 38 31.4240015536 -02 36 33.895105605 16.59 17.36 16.42 15.22 13.82 M3.5 21 0
124 [W96] rJ053831-0235 TT* 05 38 31.5906845078 -02 35 14.984909238 19.243 17.17 15.85 14.88 13.77 M0e 22 0
125 2MASS J05383160-0251268 Y*O 05 38 31.6005115935 -02 51 26.900455479   17.39 15.56 14.52 13.57 K6.0 6 0
126 2MASS J05383230-0302236 Y*O 05 38 32.2975687415 -03 02 23.699310988   19.73 18.24 16.95 15.28 ~ 4 0
127 2MASS J05383276-0204506 Y*O 05 38 32.7629818867 -02 04 50.684161935   17.96 16.54 15.52 14.33 ~ 2 0
128 2MASS J05383335-0236176 Y*O 05 38 33.3607025939 -02 36 17.698073207 18.08 17.30 15.83 14.72 13.40 M2.5 14 0
129 2MASS J05383360-0157543 Y*O 05 38 33.6053191622 -01 57 54.441518107   18.99 17.49 16.15 14.42 ~ 5 0
130 [W96] rJ053833-0236 TT* 05 38 34.0615489873 -02 36 37.594110884 19.530   16.39 15.24 13.72 M3-M4e 30 0
131 [BNM2013] 93.03 29 LM* 05 38 34.6043411983 -02 41 08.826951139 18.85 19.71 17.76 16.62 15.00 M2.0 15 0
132 HD 294272 ** 05 38 34.80 -02 34 15.8           B9.5III+B8V 15 0
133 HD 294271 Y*O 05 38 36.5500037509 -02 33 12.757877962   7.78 7.88   7.990 B5V 27 0
134 [BNM2013] 93.03 22 LM* 05 38 36.6929587926 -02 44 13.730029296 19.83 19.11 17.55 16.13 14.33 ~ 15 0
135 2MASS J05383682-0256584 Y*O 05 38 36.8234421362 -02 56 58.470472837   18.01 16.49 15.34 14.04 ~ 4 0
136 2MASS J05383687-0236432 Y*O 05 38 36.8798170946 -02 36 43.319891515   19.36 18.18 16.76 14.89 M4.5 12 0
137 2MASS J05383745-0250236 Y*O 05 38 37.4495875325 -02 50 23.670392385   19.33 17.85 16.43 14.66 M4.5 15 0
138 2MASS J05383794-0205524 Y*O 05 38 37.9429603653 -02 05 52.592573238   16.90 15.48 14.53 13.50 ~ 2 0
139 2MASS J05383870-0307212 Y*O 05 38 38.7111837295 -03 07 21.383214148   16.90 15.42 14.45 13.41 ~ 1 0
140 2MASS J05383902-0245321 TT* 05 38 39.0316625887 -02 45 32.218817342     17.26 15.92 14.58 M2.5 22 0
141 2MASS J05383965-0230210 Y*O 05 38 39.6504374393 -02 30 21.040297798 19.705   17.90 17.27 14.85 ~ 2 0
142 2MASS J05383981-0256462 TT* 05 38 39.8193651322 -02 56 46.243204248   15.98 14.62 13.71 12.76 K7.5 11 0
143 2MASS J05383990-0206396 Y*O 05 38 39.9055947990 -02 06 39.795976466   18.85 17.27 16.08 14.60 ~ 3 0
144 2MASS J05384008-0250370 Y*O 05 38 40.0796820151 -02 50 37.106375520   20.15 18.66 17.26 15.48 M4.5 12 0
145 2MASS J05384053-0233275 Y*O 05 38 40.5378770841 -02 33 27.606497237 19.58 18.95 17.65 16.28 14.52 ~ 15 0
146 2MASS J05384143-0217016 Y*O 05 38 41.439 -02 17 01.63   18.66 17.16 16.08 14.73 M2.0 5 0
147 [BNM2013] 92.01 24 LM* 05 38 41.5982262598 -02 30 28.924343052 19.33 18.54 17.07 15.87 14.37 ~ 13 0
148 NAME sigma Orionis Cluster MGr 05 38 42 -02 36.0           ~ 500 0
149 2MASS J05384227-0237147 TT* 05 38 42.2799882547 -02 37 14.820169016 17.36 16.69 15.27 14.27 13.22 M0.5 20 0
150 [HHM2007] 685 LM* 05 38 42.8603638799 -02 38 52.610483072 19.79 18.59 17.12 16.09 14.90 ~ 3 0
151 [BNM2013] 90.02 74 LM* 05 38 43.3374700242 -02 32 00.860357462 21.747 18.95 17.31 15.90 14.06 M5.0 11 0
152 [W96] rJ053843-0233 LM* 05 38 43.5574840383 -02 33 25.440695940 17.743 16.52 15.14 14.16 13.07 M1 17 0
153 2MASS J05384375-0252427 Y*O 05 38 43.7562131462 -02 52 42.787762298   19.59 18.07 16.63 14.86 ~ 13 0
154 2MASS J05384379-0304114 Y*O 05 38 43.7977564583 -03 04 11.569450626   18.99 17.45 16.21 14.68 ~ 5 0
155 2MASS J05384386-0237068 TT* 05 38 43.8693303763 -02 37 06.913989844 13.559   17.93 16.59 14.80 ~ 20 0
156 2MASS J05384456-0304198 Y*O 05 38 44.56 -03 04 19.9   20.56 18.87 17.53 15.82 ~ 1 0
157 * sig Ori Y*O 05 38 44.7665260139 -02 36 00.284709290 2.54 3.58 3.79 3.87 4.11 O9.5V 758 0
158 2MASS J05384534-0304428 Y*O 05 38 45.3465741762 -03 04 43.065452593   19.95 18.43 17.11 15.43 ~ 2 0
159 V* V595 Ori Or* 05 38 45.37536 -02 41 59.4240 17.75 17.08 15.61 15.19 13.45 M1.5 21 0
160 * sig Ori D Y*O 05 38 45.6255496741 -02 35 58.888435332 5.7 6.51 6.69   6.98 B2V 49 0
161 [W96] pJ053847-0234 TT* 05 38 47.1884633123 -02 34 36.918854535 17.17 18.43 17.36 16.38 14.81 M4.0 15 0
162 * sig Ori E Y*O 05 38 47.2050001416 -02 35 40.514907495 5.66 6.38 6.46 6.84 7.08 B2IV-Vp_He 409 0
163 [BHM2009] SigOri-MAD-34 LM* 05 38 47.4634860237 -02 35 25.322318985 12.01 14.96 14.82 14.06 13.10 M0.5 16 0
164 [W96] rJ053847-0237 TT* 05 38 47.91648 -02 37 19.2360 16.81 16.78 15.51 15.01 13.39 M1.0 22 0
165 [BNM2013] 90.02 90 LM* 05 38 48.6874594200 -02 36 16.299701128 13.474   15.45 14.24 13.37 M1.5 14 0
166 [W96] rJ053849-0238 LM* 05 38 49.1729002866 -02 38 22.288205985 17.35 16.22 14.87 13.93 12.91 M0.5e 21 0
167 [BNM2013] 93.03 5 LM* 05 38 49.2233491770 -02 41 25.200454026     15.98 14.73 13.23 M3.5 15 0
168 [BNM2013] 93.03 3 LM* 05 38 49.6420357328 -02 45 26.998595543     16.48 15.38 14.15 M1.0 7 0
169 2MASS J05384978-0209413 Y*O 05 38 49.7900629476 -02 09 41.372034152   19.46 17.95 16.72 15.21 ~ 2 0
170 [BNM2013] 93.03 2 LM* 05 38 49.9362749572 -02 41 22.887686937 19.21 18.27 16.76 15.59 14.16 M3.0 13 0
171 2MASS J05385003-0237354 Y*O 05 38 50.0388980155 -02 37 35.550251796 19.47 18.95 18.00 16.69 14.93 ~ 14 0
172 2MASS J05385009-0156443 Y*O 05 38 50.0945596081 -01 56 44.445449584   20.37 18.85 17.68 15.90 ~ 2 0
173 [BNM2013] 92.01 11 LM* 05 38 50.3858746989 -02 26 47.768661105 19.775 18.37 16.79 15.56 14.05 M3.5 14 0
174 2MASS J05385224-0208098 Y*O 05 38 52.2423461256 -02 08 09.902999172   20.78 19.08 17.60 15.68 ~ 5 0
175 [SWW2004] J053852.511-021221.41 Y*O 05 38 52.511 -02 12 21.41   19.05 17.56 16.33 14.77 ~ 2 0
176 [SWW2004] J053852.714-021223.60 Y*O 05 38 52.714 -02 12 23.60   17.92 16.41 15.23 13.77 ~ 1 0
177 [W96] rJ053852-0238 LM* 05 38 53.0771260697 -02 38 53.750357403 17.35 16.30 14.82 13.83 12.75 M1.0 10 0
178 Mayrit 489165 LM* 05 38 53.180280 -02 43 52.99500 18.36 17.19 15.62 15.27 13.68 M1.0 12 0
179 2MASS J05385341-0220307 Y*O 05 38 53.4143072253 -02 20 30.857927395   18.59 17.08 16.04 14.91 ~ 2 0
180 2MASS J05385492-0228583 Y*O 05 38 54.9294057342 -02 28 58.375274422 21.05 20.21 18.61 17.22 15.48 M4.5 26 0
181 2MASS J05385543-0241297 LM* 05 38 55.4463282511 -02 41 29.720508744   17.65 16.14 14.98 13.59 M3.0 9 0
182 2MASS J05385663-0257021 Y*O 05 38 56.6377328008 -02 57 02.201551917   16.92 15.46 14.44 13.32 ~ 6 0
183 2MASS J05385831-0216101 Y*O 05 38 58.3196460382 -02 16 10.133950605   17.04 15.61 14.62 13.64 M0.0 12 0
184 2MASS J05385855-0215278 Y*O 05 38 58.5545914071 -02 15 27.824117061   17.90 16.44 15.30 13.97 ~ 8 0
185 Haro 5-18 Y*O 05 38 59.2271567353 -02 33 51.417370497 18.648 17.62 16.55 15.59 14.43 M2.5 21 0
186 2MASS J05385977-0253574 Y*O 05 38 59.7804732060 -02 53 57.466747129   17.99 16.52 15.50 14.40 M1.0 5 0
187 Haro 5-16 Or* 05 39 01.3709989122 -02 18 27.455689721   16.28 15.01 14.02 12.99 M0.5 21 0
188 HD 37525 Y*O 05 39 01.4929145441 -02 38 56.359361948   7.98 8.06   8.210 B5V 67 1
189 [BNM2013] 90.02 66 LM* 05 39 02.7715957022 -02 29 55.862456687 19.981 18.56 16.98 15.76 14.21 M4.0 16 0
190 2MASS J05390297-0241272 Y*O 05 39 02.9788879717 -02 41 27.165588370 17.71 17.87 16.51 15.33 13.93 M2.5 13 0
191 ESO-HA 1693 Y*O 05 39 03.5774746551 -02 46 27.048631746   18.04 16.94 15.82 14.37 M3.5 17 0
192 2MASS J05390387-0220081 Y*O 05 39 03.8714479915 -02 20 08.117079515   20.09 18.79 17.38 15.62 M4.5 11 0
193 2MASS J05390524-0233005 Y*O 05 39 05.2459205948 -02 33 00.593063567 20.41 19.36 17.89 16.58 14.97 ~ 14 0
194 2MASS J05390581-0226154 Y*O 05 39 05.8215014812 -02 26 15.499054158   20.12 18.54 17.33 15.83 ~ 6 0
195 [W96] rJ053907-0228 LM* 05 39 07.5918387835 -02 28 23.407342309 19.14 18.52 16.98 15.79 14.36 M3e 19 0
196 [BZR99] S Ori 7 Y*O 05 39 08.2189863578 -02 32 28.472631501 20.85 20.61 19.10 17.55 15.70 ~ 16 0
197 CVSO 1858 TT* 05 39 08.5268331163 -02 51 46.575835390   16.64 15.23 14.21 13.23 M0.5 12 0
198 2MASS J05390878-0231115 TT* 05 39 08.7812031100 -02 31 11.584830745 18.78 19.27 18.11 16.82 15.30 M3.0 17 0
199 2MASS J05390893-0257049 Y*O 05 39 08.9383961926 -02 57 04.964259843   18.94 17.48 16.26 14.76 ~ 5 0
200 HD 37545 Y*O 05 39 09.2141662215 -02 56 34.714915707   9.29 9.29   9.320 B9V 26 0
201 2MASS J05390928-0219130 Y*O 05 39 09.2865642226 -02 19 13.008764499   17.65 16.17 15.11 13.94 M1.5 10 0
202 Haro 5-20 Or* 05 39 11.5178731204 -02 31 06.579710893 18.295 16.98 15.45 14.56 13.56 M0.0 25 0
203 [W96] 4771-1038 LM* 05 39 11.6326717378 -02 36 02.877728926 16.242 15.82 14.47 13.61 12.75 K7e 22 0
204 2MASS J05391183-0227409 Y*O 05 39 11.8351243120 -02 27 41.013859151 20.843 19.55 18.04 16.81 15.16 ~ 15 0
205 2MASS J05391232-0230064 Y*O 05 39 12.3264317427 -02 30 06.486585651   19.70 18.17 16.57 14.63 M5.0 13 0
206 [BNM2013] 90.02 109 LM* 05 39 14.4705665655 -02 28 33.424035167 20.561 19.11 17.52 16.30 14.82 M3.5e 17 0
207 V* V956 Ori Or* 05 39 14.5362526229 -02 19 36.691185750   17.33 15.90 14.83 13.60 M1.5 12 0
208 V* V2744 Ori Or* 05 39 15.0554691992 -02 18 44.453315641   19.99 18.51 17.27 15.73 M3.5 8 0
209 Kiso A-0904 80 Y*O 05 39 17.176752 -02 25 43.36716 19.748 18.25 16.40 16.02 14.18 M1.5 17 0
210 2MASS J05392023-0238258 Y*O 05 39 20.2374400819 -02 38 25.947658082 21.41 20.82 18.97 17.45 15.55 M5.5 20 0
211 [BNM2013] 90.02 55 LM* 05 39 20.4492423419 -02 27 36.859146998 18.900 17.43 15.93 14.81 13.52 M2e 16 0
212 [W96] rJ053923-0233 LM* 05 39 22.8699871628 -02 33 33.118181199 19.264 18.19 16.56 15.47 14.19 M2e 17 0
213 2MASS J05392394-0216190 Y*O 05 39 23.9466357842 -02 16 19.075720155   18.56 17.10 16.04 14.84 ~ 2 0
214 2MASS J05392401-0257486 Y*O 05 39 24.0187521141 -02 57 48.565232472   15.83 14.38 13.40 12.36 ~ 6 0
215 [BNM2013] 90.02 83 LM* 05 39 24.3620289298 -02 34 01.417885189 19.394 18.19 16.62 15.53 14.28 M2.0 15 0
216 V* BG Ori TT* 05 39 25.2029732899 -02 38 22.059712657   15.88 14.72 13.78 12.83 K7.5 30 0
217 2MASS J05392561-0234042 Y*O 05 39 25.6109937994 -02 34 04.295123114 20.279 20.12 18.22 16.71 14.96 ~ 11 0
218 2MASS J05392633-0228376 Y*O 05 39 26.3370433757 -02 28 37.705662392   19.69 18.02 16.96 15.26 ~ 15 0
219 2MASS J05392647-0226154 Y*O 05 39 26.4735676700 -02 26 15.516221063   18.55 17.08 15.98 14.81 M1.5 13 0
220 2MASS J05392650-0252152 Y*O 05 39 26.4966740066 -02 52 15.270557701   18.91 17.33 16.09 14.58 M4.0 9 0
221 2MASS J05392677-0242583 Y*O 05 39 26.7736905732 -02 42 58.360415913   21.49 18.90 17.25 15.52 ~ 12 0
222 2MASS J05392680-0219247 Y*O 05 39 26.8087217335 -02 19 24.796329929   17.12 15.64 14.60 13.44 M1.5 6 0
223 2MASS J05392883-0217513 Y*O 05 39 28.8350546610 -02 17 51.360927864   18.39 16.97 15.77 14.27 M3.5 9 0
224 2MASS J05393056-0238270 LM* 05 39 30.5686427651 -02 38 27.045475933   19.36 17.82 16.61 15.21 M2.5 10 0
225 2MASS J05393132-0248528 Y*O 05 39 31.3266953722 -02 48 52.868107651   19.72 18.18 16.86 15.20 M3.5 8 0
226 V* V957 Ori B Y*O 05 39 31.5317501364 -02 49 10.353806864   18.62 17.03 15.85 14.36 ~ 1 0
227 V* V957 Ori A Y*O 05 39 31.5965896129 -02 49 08.136244168   18.52 16.94 15.76 14.34 ~ 1 0
228 2MASS J05393291-0247492 Y*O 05 39 32.9157767996 -02 47 49.212739961   16.50 15.09 14.09 13.10 M0.5 8 0
229 V* V2748 Ori Or* 05 39 32.9285884302 -02 11 31.174498873   18.80 17.56 16.24 14.69 ~ 4 0
230 2MASS J05393378-0220398 Y*O 05 39 33.7863450167 -02 20 39.887476721   17.19 15.74 14.73 13.64 M1.0 10 0
231 2MASS J05393729-0226567 Y*O 05 39 37.2966707292 -02 26 56.804815353 17.790 16.25 14.84 13.89 12.98 M0 13 0
232 [BZR99] S Ori 4 Y*O 05 39 39.3178012675 -02 32 25.331790730 20.429 20.35 18.78 17.34 15.52 ~ 15 0
233 Haro 5-25 Or* 05 39 39.3779110085 -02 17 04.504473972   16.95 15.35 14.29 13.24 M0.0 20 0
234 2MASS J05394097-0216243 TT* 05 39 40.9756212916 -02 16 24.371435583   19.37 18.01 16.54 14.75 ~ 13 0
235 2MASS J05394173-0219463 Y*O 05 39 41.7343902250 -02 19 46.409665564   19.84 18.25 17.06 15.61 ~ 3 0
236 V* V511 Ori Or* 05 39 42.787560 -02 58 53.93316   15.35 14.25 13.91 12.27 M1.5 15 0
237 2MASS J05394299-0213333 Y*O 05 39 42.9939614232 -02 13 33.329466145   20.17 18.58 17.25 15.56 ~ 10 0
238 2MASS J05394318-0232433 Y*O 05 39 43.1841780007 -02 32 43.375675491 19.867 19.34 17.72 16.45 14.83 M4.5 19 0
239 HD 37633 a2* 05 39 46.1986412761 -02 40 32.114394169   9.07 8.99   8.940 B9.5IIIpSi 52 0
240 V* V2750 Ori Or* 05 39 46.6100618827 -02 26 31.385543268   19.65 18.05 16.65 14.87 M5.0 13 0
241 2MASS J05394725-0241359 Y*O 05 39 47.2515224372 -02 41 36.005639732   19.63 18.28 17.15 15.55 ~ 2 0
242 2MASS J05394799-0240320 Y*O 05 39 47.9873331083 -02 40 32.107798475   17.86 16.38 15.23 13.83 M3.0 9 0
243 2MASS J05394806-0245571 Y*O 05 39 48.0536249056 -02 45 57.068189900   18.10 16.58 15.49 14.18 M2.5 10 0
244 2MASS J05394858-0216306 Y*O 05 39 48.5846066269 -02 16 30.609612825   17.41 15.91 14.88 13.68 ~ 4 0
245 2MASS J05394891-0229110 Y*O 05 39 48.915 -02 29 11.08   19.02 17.34 16.24 14.70 M3.0 9 0
246 2MASS J05394944-0223459 Y*O 05 39 49.4438003835 -02 23 45.964313395   20.21 18.15 16.86 15.12 M4e 17 0
247 2MASS J05395117-0249443 Y*O 05 39 51.1676743700 -02 49 44.376908687   18.26 16.74 15.60 14.16 ~ 7 0
248 2MASS J05395602-0251228 Y*O 05 39 56.0319165019 -02 51 23.036189087   17.61 16.12 14.94 13.49 ~ 8 0
249 2MASS J05400676-0257389 Y*O 05 40 06.760 -02 57 38.94   20.16 18.67 17.13 15.25 ~ 4 0
250 HD 37686 * 05 40 13.0894729140 -02 30 53.215550382   9.27 9.21   9.180 B9.5V 30 0
251 HD 37699 Y*O 05 40 20.1906838846 -02 26 08.225704188   7.50 7.62   7.770 B5III 46 0
252 HD 37744 V* 05 40 37.2961902857 -02 49 30.847246646 5.14 6.02 6.22     B2IV 139 0
253 * zet Ori ** 05 40 45.52666 -01 56 33.2649 0.50 1.56 1.77 1.85 2.05 O9.7Ib+B0III 334 0
254 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 457 0
255 NAME Flame Nebula HII 05 41 42.7 -01 54 44           ~ 693 1
256 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1217 0
257 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1087 1
258 [BCB89] IRS 2b Y*O 05 41 45.490 -01 54 28.78           O8V 39 1
259 LDN 1630 DNe 05 45.5 -00 59           ~ 358 0
260 V* YY Gem BY* 07 34 37.4475372002 +31 52 10.181030942 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 827 0
261 NAME Ori Belt reg ~ ~           ~ 69 0
262 Ass Ori OB 1a As* ~ ~           ~ 204 0

    Equat.    Gal    SGal    Ecl

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2021.04.16-13:41:34

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