QSO B1921-293

Query : QSO B1921-293
C.D.S. - SIMBAD4 rel 1.7 - 2021.05.10CEST23:23:10

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


Basic data :
QSO B1921-293 -- BL Lac - type object
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:
Rad (2010AJ,ICRF,...), QSO (2008ApJS,QSO,...), Bla (2009A&A,[DGT2001],...), X (2009A&A,2E,...), gam (1FGL,2FGL,...), IR (2MASS,WISEA,...), * (EPIC,Gaia), BLL (2012MNRAS,[VV98b]), AGN (2011ApJ,CGRaBS), G (6dFGS,LEDA), cm (AT20G), smm (JCMTSE)
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) :
19 24 51.05595514 -29 14 30.1210524 (Radio) [ 0.0418 0.0448 90 ] A 2015AJ....150...58F
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) :
19 21 42.23691009 -29 20 26.3502742 [ 0.0418 0.0448 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) :
009.34407889306 -19.60679072079 [ 0.0418 0.0448 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 :
-0.259 -0.600 [0.292 0.289 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) 87895 [55] / z(~) 0.35263 [0.00018] / cz 105715.0 [55.0]
   (Opt) C 2009MNRAS.399..683J
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)
  • (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):
0.0000123 0.0000048 -5 (Rad) D 2010AJ....139.1713C
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 (7) :
B 18.71 [~] D 2008MNRAS.384..775M
V 18.21 [~] D 2010A&A...518A..10V
R 15.07 [~] D 2008ApJS..175...97H
G 17.6821 [0.0228] C 2018yCat.1345....0G
J 14.958 [0.041] C 2003yCat.2246....0C
H 14.029 [0.045] C 2003yCat.2246....0C
K 13.141 [0.043] C 2003yCat.2246....0C
SIMBAD with radius arcmin
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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 (60) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B1921-293 ICRF J192451.0-291430 RORF 1921-293 [HB93] 1921-293
AT20G J192451-291430 IERS B1921-293 RX J1924.8-2914 [IN88] 1921-293
AT20G J192451.0-291430 IVS B1921-293 1RXS J192450.8-291437 [MEM2008] 255
CGRaBS J1924-2914 JCMTSE J192451.2-291431 SWIFT J1924.9-2918 [MGL2009] BZQ J1924-2914
6dFGS gJ192451.0-291430 LEDA 2830012 TIC 168765078 [MML2015] 5BZQ J1924-2914
2E 4245 2MASS J19245105-2914300 VCS1 J1924-2914 [NZ2007] 12
2E 1921.7-2920 MRC 1921-293 VSOP J1924-2914 [VV2000] J192451.1-291431
EPIC 229228355 NVSS J192451-291431 WISEA J192451.05-291430.1 [VV2003] J192451.1-291431
EPIC 213490088 OHIO V 236 WISE J192451.05-291430.0 [VV2006] J192451.1-291431
1ES 1921-29.3 OHIO V -236 WISE J192451.05-291430.1 [VV2010] J192451.1-291431
1FGL J1925.2-2919 PBC J1924.4-2913 WMAP J1924-2914 [VV98b] J192451.1-291431
2FGL J1924.8-2912 PKS 1921-293 [CH94] 1921-293 [WCO2009] J192452-291415
3FGL J1924.8-2914 PKS J1924-2914 [DGT2001] B1921-293 EQ 1921-29
4FGL J1924.8-2914 PMN J1924-2914 [DSJ85] 1921-293 Gaia DR1 6758696945147732352
3FHL J1924.8-2913 QSO J1924-2914 [GR92] 1921-293 Gaia DR2 6758696945147732352

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References (718 between 1850 and 2021) (Total 718)
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


velocities : 6    PM : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : QSO B1921-293

Link by name to the catalogue in VizieR :

2E 4245 IERS B1921-293 2MASS J19245105-2914300 NVSS J192451-291431 PKS 1921-293
PKS J1924-2914 PMN J1924-2914 1RXS J192450.8-291437 VSOP J1924-2914 WISEA J192451.05-291430.1
WISE J192451.05-291430.0 WISE J192451.05-291430.1 Gaia DR1 6758696945147732352 Gaia DR2 6758696945147732352

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
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2021.05.10-23:23:10

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