QSO B2052-474

Query : QSO B2052-474 C.D.S. - SIMBAD4 rel 1.5.6 - 2016.06.29CEST04:05:55

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


Basic data :
QSO B2052-474 -- Quasar
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 (Ref,Cul,...), gam (2EG,3EG,...), QSO (Ref,QSO,...), X (Ref,PBC,...), Bla (Ref,[MGL2009]), AGN (Ref,CGRaBS), cm (AT20G,ATPMN), IR (2MASS,WISE), * (USNO), G (LEDA), UV (GALEX)
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
20 56 16.3600 -47 14 47.505 (Optical) [ ] B 2009A&A...505..385A
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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
FK5 coord. (ep=J2000 eq=2000) :
20 56 16.360 -47 14 47.51 [ ]
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
20 52 50.09 -47 26 19.3 [ ]
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
352.5906 -40.3814 [ ]
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 :
0.0 0.0 [~ ~ ~] D 2007ApJ...664...53A
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) 216460 [138] / z(~) 1.488997 [0.000460] / cz 446390.07 [137.90]
   D 2002LEDA.........0P
Syntax of fluxes (or magnitudes) is : "filter-name flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, J, H, K, u, g, r, i, z
  • 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 18.29 [~] D 2008MNRAS.384..775M
V 19.1 [~] D ~
R 18.07 [~] D 2008ApJS..175...97H
J 16.581 [0.130] D 2003yCat.2246....0C
H 15.565 [0.129] D 2003yCat.2246....0C
K 14.919 [0.113] D 2003yCat.2246....0C
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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!).
Some important notes on this object about identifications and objects associations.
notes:


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (57) :

QSO B2052-474 ICRF J205616.3-471447 QSO J2056-472 [CH94] 2052-474
AT20G J205616-471447 IERS B2052-474 RORF 2052-474 [HB93] 2052-474
AT20G J205616.4-471447 INTREF 1045 RX J2056.2-4714 [LBD96] J2058-4657
ATPMN J205616.3-471447 IVS B2052-474 1RXS J205615.8-471446 [MEM2008] 273
CGRaBS J2056-4714 1Jy 2052-47 SUMSS J205616-471448 [MGL2009] BZQ J2056-4714
Cul 2052-474 1Jy 2052-474 SWIFT J2056.0-4713 [VV2000] J205616.4-471448
2EG J2058-4657 LEDA 2830665 SWIFT J2055.6-4710 [VV2003] J205616.4-471448
3EG J2055-4716 2MASS J20561636-4714475 USNO-A2.0 0375-39149937 [VV2006] J205616.4-471448
EGR J2057-4658 MRC 2052-474 WISE J205616.36-471447.6 [VV2010] J205616.4-471448
0FGL J2056.1-4715 PBC J2055.7-4711 WISE J205616.35-471447.3 [VV96] J205616.4-471448
1FGL J2056.3-4714 PKS 2052-47 WMAP 208 [VV98] J205616.4-471448
2FGL J2056.2-4715 PKS J2056-4714 WMAP J2056-4717 [WCO2009] J205601-471556
3FGL J2056.2-4714 PKS 2052-474 WMAP J2056-4716
1FHL J2056.3-4712 PMN J2056-4714 WMAP J2056-4714
GALEX 2669695634812964761 QSO B2052-47 XMMSL1 J205617.1-471450

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References (196 between 1850 and 2016)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Measurements (5 types) :


ISO : 3    pos : 1    posa : 1    velocities : 1    ze : 1   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : QSO B2052-474

Link by name to the catalogue in VizieR :

3EG J2055-4716 IERS B2052-474 2MASS J20561636-4714475 PKS 2052-47 PKS J2056-4714
PKS 2052-474 PMN J2056-4714 1RXS J205615.8-471446 SUMSS J205616-471448 USNO-A2.0 0375-39149937

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Annotations :
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2016.06.29-04:05:55

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