7C 1204+2811

Query : 7C 1204+2811

Basic data :
7C 1204+2811 -- Blazar
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 (2014ApJS,7C,...), QSO (2015Ap&SS,QSO,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,RX,...), MIR (WISEA,WISE), Opt (LAMOST,SDSS), AGN (CGRaBS), Bz? ([SRM2005]), G (2016MNRAS), * (Gaia)
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) : 		12 07 27.90046635 +27 54 58.8497008 (Radio) [ 0.0791293 0.1263 0 ] A 2020A&A...644A.159C
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) : 		12 04 55.10784390 +28 11 40.5494050 [ 0.0791293 0.1263 0 ]
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) : 		205.77833963557 +80.22239481204 [ 0.0791293 0.1263 0 ]
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 : 		-0.183 0.059 [0.182 0.126 90] A 2020yCat.1350....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) 245866 [78] / z(spectroscopic) 2.18097 [0.00026] / cz 653838.4 [77.9]
   (Opt) C 2020ApJS..249....3A
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) :
V 18.1 [~] E ~
R 18.69 [~] D 2008ApJS..175...97H
G 18.358459 [0.003975] C 2020yCat.1350....0G
u (AB) 19.289 [0.024] C 2020ApJS..249....3A
g (AB) 18.864 [0.009] B 2020ApJS..249....3A
r (AB) 18.758 [0.010] C 2020ApJS..249....3A
i (AB) 18.520 [0.011] C 2020ApJS..249....3A
z (AB) 18.287 [0.026] C 2020ApJS..249....3A
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within 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!). sed-help-icon
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 (54) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

7C 120454.6+281111 IVS B1204+281 S3 1204+28 [SRM2005] J120727.90+275458.8
B2 1204+28 JVAS J1207+2754 SDSS J120727.90+275458.8 [VV2000] J120727.8+275501
B2.2 1204+28 JVAS B1204+281 TGSSADR J120727.9+275459 [VV2003] J120727.8+275501
BWE 1204+2811 LAMOST J120727.90+275458.8 TXS 1204+281 [VV2006] J120727.8+275501
7C 1204+2811 MITG J120727+2754 VCS1 J1207+2754 [VV2010] J120727.8+275501
CGRaBS J1207+2754 NRAO 1204+28 VIPS J12074+2754 [VV96] J120727.8+275501
CLASS J120727.9023+275458.844 NVSS J120727+275459 WB 1204+2811 [VV98] J120727.8+275501
CRATES J120726+275502 OHIO N 208 WISEA J120727.90+275458.9 [W72] 1205+28
FIRST J120727.8+275458 QSO B1204+281 WISE J120727.90+275458.9 EQ 1204+282
GB6 B1204+2811 RFC J1207+2754 [ATZ98] D048 Gaia DR3 4006985649995293440
87GB 120453.9+281142 RGB J1207+279 [DT2000] NGC 4104 23 Gaia DR1 4006985649995293440
GLEAM J120726+275418 RGB J1207.5+2755 [HB93] 1204+281 Gaia DR2 4006985649995293440
ICRF J120727.9+275458 RX J1207.4+2755 [MGL2009] BZQ J1207+2754
IERS B1204+281 1RXS J120728.3+275507 [MML2015] 5BZQ J1207+2754

References (84 between 1850 and 2024) (Total 84)
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 : 12    PM : 2   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : 7C 1204+2811

Link by name to the catalogue in VizieR :

BWE 1204+2811 FIRST J120727.8+275458 IERS B1204+281 MITG J120727+2754 NVSS J120727+275459
1RXS J120728.3+275507 SDSS J120727.90+275458.8 WISEA J120727.90+275458.9 WISE J120727.90+275458.9 Gaia DR3 4006985649995293440
Gaia DR1 4006985649995293440 Gaia DR2 4006985649995293440

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
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