NGC246

Query : NGC246
C.D.S. - SIMBAD4 rel 1.7 - 2019.07.16CEST09:10:54

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
NGC 246 -- Planetary Nebula
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
* (ALS,BD,...), X (2E,RBS,...), UV (2EUVE,EUVE,...), ** (**,CCDM,...), PN (Ref,PK,...), IR (IRAS,2MASS), WD* (WD), Rad (PMN), blu (PHL)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
00 47 03.3420803259 -11 52 18.975106178 (Optical) [ 0.0848 0.0605 90 ] A 2018yCat.1345....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
00 44 32.4606623076 -12 08 40.940236861 [ 0.0848 0.0605 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
118.8633830870103 -74.7090591282195 [ 0.0848 0.0605 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
-16.962 -8.995 [0.214 0.130 90] A 2018yCat.1345....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) -15.70 [~] / z(~) -0.000052 [~] / cz -15.70 [~]
   D 1999PASP..111..221F
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas):
1.9521 [0.1007] A 2018yCat.1345....0G
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
PG1159 D 1988A&A...198..287M
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (incl) : inclination (in units of 15° from 0 to 7)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin):
3.733 3.733 90 (Rad) D 2008ApJ...689..194S
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (8) :
U 10.15 [~] D 2003AJ....125.2531R
B 11.52 [0.04] D 2012yCat.1322....0Z
V 11.76 [0.03] D 2012yCat.1322....0Z
R 12.18 [0.14] E 2012yCat.1322....0Z
G 11.8107 [0.0008] C 2018yCat.1345....0G
J 12.61 [0.06] C 2003yCat.2246....0C
H 12.79 [0.03] C 2003yCat.2246....0C
K 12.87 [0.03] C 2003yCat.2246....0C
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within radius arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (52) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 246 GEN# -0.01200134 PLX 152.00 1RXS J004703.1-115217
** ADA 1A GPM 11.763966-11.871916 PMN J0047-1152 TD1 31081
** CUD 1A GSC2 S0033000111 PN G118.8-74.7 TYC 5272-1890-1
ALS 17217 GSC 05272-01890 PN VV 4 UBV M 5351
BD-12 134A HIC 3678 PN VV' 7 UBV 644
BD-12 134 HIP 3678 PN ARO 43 UCAC2 27592055
BPS CS 31062-0003 IDS 00420-1225 RBS 109 UCAC3 157-1951
CCDM J00471-1152A IRAS 00445-1207 2RE J004704-115215 UCAC4 391-000856
CSI-12-00445 2MASS J00470333-1152189 2RE J0047-115 uvby98 610160829
2E 178 MCT 0044-1208 RE J004703-115211 WDS J00470-1152A
2E 0044.5-1208 PHL 829 RE J0047-115 WD 0044-121
2EUVE J0047-11.8 PK 118-74 1 RE J004702-115145 [TSA98] J004704.50-115201.70
EUVE J0047-11.8 PLX 152 2RXF J004703.4-115214 Gaia DR2 2376592910265354368

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References (448 between 1850 and 2019) (Total 448)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

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Collections of Measurements


distance : 2    velocities : 1    PM : 4    PLX : 4    MK : 3   

   

Observing logs


ISO : 14    IUE : 41   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC246

Link by name to the catalogue in VizieR :

NGC 246 ALS 17217 BD-12 134 CCDM J00471-1152A 2E 178
EUVE J0047-11.8 GSC 05272-01890 HIC 3678 HIP 3678 IRAS 00445-1207
2MASS J00470333-1152189 PHL 829 PLX 152 PMN J0047-1152 PN G118.8-74.7
2RE J004704-115215 2RE J0047-115 1RXS J004703.1-115217 TD1 31081 TYC 5272-1890-1
UCAC2 27592055 UCAC3 157-1951 UCAC4 391-000856 uvby98 610160829 WDS J00470-1152A
WD 0044-121 Gaia DR2 2376592910265354368

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The list of all annotations to SIMBAD objects can be found here .

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2019.07.16-09:10:54

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