2019A&A...627A.124P


Query : 2019A&A...627A.124P

2019A&A...627A.124P - Astronomy and Astrophysics, volume 627A, 124-124 (2019/7-1)

Near-Earth asteroids spectroscopic survey atIsaac Newton Telescope.

POPESCU M., VADUVESCU O., DE LEON J., GHERASE R.M., LICANDRO J., BOACA I.L., SONKA A.B., ASHLEY R.P., MOCNIK T., MORATE D., PREDATU M., DE PRA M., FARINA C., STOEV H., DIAZ ALFARO M., ORDONEZ-ETXEBERRIA I., LOPEZ-MARTINEZ F. and ERRMANN R.

Abstract (from CDS):

Context. The population of near-Earth asteroids (NEAs) shows a large variety of objects in terms of physical and dynamical properties. They are subject to planetary encounters and to strong solar wind and radiation effects. Their study is also motivated by practical reasons regarding space exploration and long-term probability of impact with the Earth. Aims. We aim to spectrally characterize a significant sample of NEAs with sizes in the range of ∼0.25-5.5km (categorized as large), and search for connections between their spectral types and the orbital parameters. Methods. Optical spectra of NEAs were obtained using the Isaac Newton Telescope (INT) equipped with the IDS spectrograph. These observations are analyzed using taxonomic classification and by comparison with laboratory spectra of meteorites. Results. A total number of 76 NEAs were observed. We spectrally classified 44 of them as Q/S-complex, 16 as B/C-complex, eight as V-types, and another eight belong to the remaining taxonomic classes. Our sample contains 27 asteroids categorized as potentially hazardous and 31 possible targets for space missions including (459872) 2014 EK24, (436724) 2011 UW158, and (67367) 2000 LY27. The spectral data corresponding to (276049) 2002 CE26 and (385186) 1994 AW1 shows the 0.7µm feature which indicates the presence of hydrated minerals on their surface. We report that Q-types have the lowest perihelia (a median value and absolute deviation of 0.797±0.244AU) and are systematically larger than the S-type asteroids observed in our sample. We explain these observational evidences by thermal fatigue fragmentation as the main process for the rejuvenation of NEA surfaces. Conclusions. In general terms, the taxonomic distribution of our sample is similar to the previous studies and matches the broad groups of the inner main belt asteroids. Nevertheless, we found a wide diversity of spectra compared to the standard taxonomic types.

Abstract Copyright: © ESO 2019

Journal keyword(s): minor planets, asteroids: general - techniques: spectroscopic - methods: observational

VizieR on-line data: <Available at CDS (J/A+A/627/A124): log.dat spec/*>

Simbad objects: 44

goto Full paper

goto View the references in ADS

Number of rows : 44
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 HD 9761 PM* 01 36 26.8454809080 +45 46 21.486615348   10.83 10.19     G2V 5 0
2 HD 11532 PM* 01 53 18.3712838400 +00 22 23.275841628   10.36 9.71     G8III/IV 81 1
3 HD 19061 PM* 03 04 22.2887498568 +14 51 30.086054028   10.40 9.80     G2V 11 0
4 HD 29714 PM* 04 41 42.6209425200 +22 37 23.824694316   9.98 9.32     G5V 11 0
5 HD 284013 PM* 04 57 46.5153275664 +25 43 05.247422112   11.03 10.38     G0 5 0
6 HD 254642 PM* 06 17 44.0575322376 +16 07 48.737709804   11.32 10.84     G2V 4 0
7 HD 257880 * 06 29 17.5981273128 +29 56 12.008832000   10.97 10.46     G2V 6 0
8 HD 259516 PM* 06 34 19.1789591112 +31 00 40.931433972   9.85 9.23     G2V 10 0
9 HD 73708 PM* 08 40 23.0121991800 +20 49 35.908296384   10.22 9.51     G2V 11 0
10 HD 75488 PM* 08 52 05.5310041224 +47 33 49.692816540 8.670 8.690   7.8   G2V 29 0
11 HD 76617 * 08 58 57.9908307672 +44 25 30.452501244   8.73 8.14     G2V 34 0
12 HD 79078 * 09 12 24.0749513016 +14 43 40.284024132   10.03 9.40     G2V 11 0
13 HD 89084 PM* 10 17 07.3398391968 +29 33 15.576577272   9.75 9.15     G2V 19 0
14 HD 91658 PM* 10 34 52.0002108192 -14 17 50.868294576   10.15 9.48 9.06 9.208 G2V 11 0
15 HD 98562 PM* 11 20 36.5781754104 +23 36 51.683814756   9.43 8.82     G2V 37 0
16 HD 100044 PM* 11 30 37.0468926312 -15 06 12.019508568   10.11 9.47     G2V 7 0
17 HD 109967 * 12 38 36.9084756264 +41 00 27.397812888   10.00 9.39     G2V 15 0
18 HD 110485 PM* 12 42 19.9962410448 +18 16 46.216760556   9.58 8.96     G2V 5 0
19 HD 110747 PM* 12 44 21.1845964728 -13 42 19.659713040   9.22 8.61     G2V 7 0
20 HD 118928 * 13 40 16.1591802408 -12 42 19.635008292   10.140 9.666     G2V 9 0
21 HD 119550 PM* 13 43 35.6994238125 +14 21 56.183577981   7.57   6.5   G2V 71 0
22 HD 120566 PM* 13 49 29.1835921848 +37 17 19.126667328   9.55 9.00     G2V 18 0
23 HD 121867 SB* 13 58 30.2712404064 -17 37 41.124993888   9.68 9.05     G2V 15 0
24 HD 124019 * 14 10 26.9348294976 +27 37 57.394604892   9.18 8.56     G2V 30 0
25 HD 127913 PM* 14 33 51.4900128936 +02 34 32.220673644   9.81 9.14     G6V 24 0
26 HD 131715 * 14 55 16.1759256096 -02 06 50.706119448   9.55 8.95     F8V 18 0
27 HD 137338 * 15 25 57.0265138704 -17 23 45.679189380   10.53 9.88     G2V 8 0
28 HD 140235 PM* 15 42 18.3709630608 +03 13 38.250373224   9.78 9.14     G5V 17 0
29 HD 142011 * 15 52 12.5135357712 -02 16 42.573808308   9.14 8.54     G1V 16 0
30 HD 151928 * 16 51 33.3675740928 -29 24 34.169741460   8.88 8.29     G2V 31 0
31 HD 157985 * 17 27 12.6513383928 -13 19 36.754840416   10.34 9.65     G2V 13 0
32 HD 170717 * 18 31 27.0639458112 -12 35 30.537642984   9.25 8.62     G2V 9 0
33 TYC 447-508-1 * 18 42 45.0084677256 +00 08 04.693469856 13.092 13.057 12.425 12.064 11.716 ~ 40 0
34 HD 182081 * 19 22 43.1022676368 +07 43 47.455241376   10.14 9.53     G2V 9 0
35 HD 182958 PM* 19 27 46.4123637816 -12 25 41.979879372   10.73 10.08     G2V 4 0
36 HD 231683 ** 19 31 37.80666 +17 46 58.6355       8.76   G2V 39 0
37 HD 195422 * 20 31 53.6382519576 -19 53 33.432160344   10.37 9.77     G2V 4 0
38 HD 198273 PM* 20 49 29.4223614433 -08 39 09.007701794   9.02 8.45     G2V 40 0
39 HD 206938 PM* 21 45 30.3036763536 +00 40 39.837258264   9.93 9.20     G5V 9 0
40 HD 239928 * 22 20 45.7221290328 +56 06 49.828910148   9.31 8.69     G2V 21 0
41 HD 216516 PM* 22 53 40.8127627104 -15 37 34.036145652   9.46 8.86     G2V 18 0
42 HD 217577 PM* 23 01 33.1718687256 +19 16 10.699105656 9.370 9.280   8.2   G2V 45 0
43 HD 218633 PM* 23 09 13.5953121120 +31 50 24.676254960   8.92 8.19     G2V 9 0
44 HD 221227 PM* 23 30 14.0963234832 -22 30 52.137482868   9.78 9.13     G2V 5 0

To bookmark this query, right click on this link: simbad:objects in 2019A&A...627A.124P and select 'bookmark this link' or equivalent in the popup menu