IERS B1217+348

Query : IERS B1217+348

Basic data :
7C 121737.89+344814.00 -- BL Lac
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 (2020A&A,7C,...), BLL (2008AJ,[VV2000b],...), Bla ([DGT2001],[IN88],...), gam (1FGL,3FGL,...), X (2007AJ,RX,...), QSO (2016A&A,QSO,...), G (2014ApJ,LEDA), BL? (2007AJ), Bz? (2022ApJS,[SRM2005]), MIR (WISEA,WISE), AGN (CGRaBS), Q? (FBQS), * (Gaia), NIR (2MASS), Opt (SDSS)
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 20 08.2941462528 +34 31 21.743167116 (Optical) [ 0.0547 0.0607 90 ] A 2020yCat.1350....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] : 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 17 38.3408573022 +34 48 00.375617872 [ 0.0547 0.0607 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) : 		163.2469135492511 +80.0159357837291 [ 0.0547 0.0607 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 : 		-0.007 0.042 [0.053 0.083 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) 51918 [15] / z(spectroscopic) 0.19118 [0.00005] / cz 57314.3 [15.0]
   (Opt) C 2012ApJS..203...21A
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 (12) :
B 17.71 [~] D 2010A&A...518A..10V
V 17.09 [~] D 2010A&A...518A..10V
R 17.07 [~] D 2008ApJS..175...97H
G 17.247589 [0.009838] C 2020yCat.1350....0G
J 15.593 [0.064] C 2003yCat.2246....0C
H 14.644 [0.064] C 2003yCat.2246....0C
K 13.861 [0.050] C 2003yCat.2246....0C
u (AB) 18.597 [0.017] C 2012ApJS..203...21A
g (AB) 18.029 [0.006] B 2009ApJS..182..543A
r (AB) 17.571 [0.006] B 2009ApJS..182..543A
i (AB) 17.215 [0.005] B 2009ApJS..182..543A
z (AB) 16.894 [0.010] B 2009ApJS..182..543A
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 121737.89+344814.00 ICRF J122008.2+343121 TGSSADR J122008.1+343126 [MGL2009] BZB J1220+3431
BWE 1217+3448 IERS B1217+348 TIC 139087764 [MML2015] 5BZB J1220+3431
CGRaBS J1220+3431 IVS B1217+348 VCS1 J1220+3431 [OCL83] 1217+348
CLASS J122008.2901+343121.710 JVAS B1217+348 VIPS J12201+3431 [SRM2005] J122008.29+343121.7
CRATES J122008+343135 JVAS J1220+3431 WB 1217+3448 [VV2000b] J122008.4+343122
FBQS J1220+3431 LEDA 3084739 WISEA J122008.29+343121.7 [VV2003b] J122008.4+343122
1FGL J1220.2+3432 2MASS J12200831+3431219 WISE J122008.30+343121.7 [VV2006b] J122008.4+343122
3FGL J1220.2+3434 NVSS J122008+343122 WISE J122008.29+343121.7 [VV2010b] J122008.4+343122
4FGL J1220.1+3432 QSO B1217+348 WN B1217.6+3448 [VV98b] J122008.4+343122
3FHL J1220.0+3432 RGB J1220+345 9Y-MST J1219+3431 Gaia DR3 4017045326690644480
FIRST J122008.3+343121 RGB J1220.1+3431 [DGT2001] B1217+348 Gaia DR1 4017045322395058304
GB2 1217+348 RX J1220.1+3431 [DGT2001] J1220+345 Gaia DR2 4017045326690644480
GB6 B1217+3448 1RXS J122008.1+343129 [HB93] 1217+348
87GB 121738.9+344833 SDSS J122008.29+343121.7 [IN88] 1217+348

References (108 between 1850 and 2024) (Total 108)
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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Collections of Measurements


velocities : 1    PM : 2   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1217+348

Link by name to the catalogue in VizieR :

BWE 1217+3448 FIRST J122008.3+343121 IERS B1217+348 2MASS J12200831+3431219 NVSS J122008+343122
1RXS J122008.1+343129 SDSS J122008.29+343121.7 WISEA J122008.29+343121.7 WISE J122008.30+343121.7 WISE J122008.29+343121.7
WN B1217.6+3448 Gaia DR3 4017045326690644480 Gaia DR1 4017045322395058304 Gaia DR2 4017045326690644480

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