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coord 21 15 49.4319197 +05 14 52.243012 (ICRS, J2000, 2000.0), radius: 2 arcmin

Query : coord 21 15 49.4319197 +05 14 52.243012 (ICRS, J2000, 2000.0), radius: 2 arcmin
CLEAR
C.D.S. - SIMBAD4 rel 1.7 - 2021.01.18CET17:49:28

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

Basic data :
* alf Equ -- Spectroscopic binary
Distance to the center arcsec: 0.00
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: 		* (*,AG,...), ** (**,CCDM,...), SB* (2008AJ,SBC7,...), IR (IRAS,IRC,...), PM* (2007A&A), X (2E,1RXS), UV (TD1)
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (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) : 		21 15 49.4319197 +05 14 52.243012 (Optical) [ 0.16 0.16 90 ] A 2007A&A...474..653V
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (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) : 		21 13 19.4292441 +05 02 24.650602 [ 0.16 0.16 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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (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) : 		056.3750328597 -28.7134675354 [ 0.16 0.16 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 : 		59.88 -94.09 [0.23 0.18 90] A 2007A&A...474..653V
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) -16.26 [0.06] / z(~) -0.000054 [0.000000] / cz -16.26 [0.06]
   A 2004A&A...424..727P
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): 		17.14 [0.21] A 2007A&A...474..653V
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: 		G6IV+B9.5V C 2000ApJ...541..298W
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 (6) :
B 4.446 [0.014] D 2000A&A...355L..27H
V 3.933 [0.009] D 2000A&A...355L..27H
G 3.6952 [0.0039] C 2018yCat.1345....0G
J 2.809 [0.306] E 2003yCat.2246....0C
H 2.442 [0.196] D 2003yCat.2246....0C
K 2.343 [0.244] D 2003yCat.2246....0C
SIMBAD with radius arcmin
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VizieR photometry viewer    sed-help-icon
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 (44) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* alf Equ GEN# +1.00202447 2MASS J21154942+0514521 SKY# 40479
* 8 Equ GSC 00536-02354 N30 4698 TD1 27865
** WRH 35 HD 202448 NAME Kitalpha TYC 536-2354-1
AG+05 3105 HD 202447 PLX 5115 UBV 18375
BD+04 4635 HIC 104987 PMC 90-93 561 UBV M 25570
CCDM J21158+0515AB HIP 104987 PPM 171503 uvby98 100202447
2E 4458 HR 8131 ROT 3097 WDS J21158+0515AB
2E 2113.3+0502 IDS 21108+0450 AB 1RXS J211549.8+051458 WEB 19079
FK5 800 IRAS 21133+0502 SAO 126662 YZ 5 7447
GC 29735 IRC +10489 SBC7 848 [HFE83] 1427
GCRV 13363 JP11 3326 SBC9 1291 Gaia DR2 1732693474833048192

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References (142 between 1850 and 2021) (Total 142)
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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                 or select by : (not exhaustive, explanation here)

Collections of Measurements


distance : 1    velocities : 13    PM : 5    Fe_H : 6    PLX : 3    MK : 10   

   

Observing logs


IUE : 10   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * alf Equ

Link by name to the catalogue in VizieR :

AG+05 3105 BD+04 4635 CCDM J21158+0515AB 2E 4458 FK5 800
GSC 00536-02354 HD 202448 HD 202447 HIC 104987 HIP 104987
HR 8131 IRAS 21133+0502 IRC +10489 2MASS J21154942+0514521 PLX 5115
PPM 171503 1RXS J211549.8+051458 SAO 126662 TD1 27865 TYC 536-2354-1
uvby98 100202447 WDS J21158+0515AB Gaia DR2 1732693474833048192

Search by coordinates in Vizier (radius: 5 arcsec)

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Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2021.01.18-17:49:28

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