IERS B1221+248

Query : IERS B1221+248

Basic data :
QSO B1221+24 -- 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:
BLL (2010A&A,[VV2000b],...), Rad (BWE,FIRST,...), gam (2FGL,3FGL,...), Bla (2016ApJS,[DGT2001],...), X (2009A&A,1E,...), Bz? (2019A&A,3HSP,...), IR (2MASS,WISEA,...), QSO (2015MNRAS,QSO), V* (2018AJ), * (Gaia), GiC (CAIRNS), rG (2018AJ), Q? (FBQS), AGN (2011ApJ), G (2014ApJ)
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 24 24.1863956209 +24 36 23.500844570 (Optical) [ 0.0686 0.0427 90 ] A 2018yCat.1345....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 21 53.5351377196 +24 53 00.481187062 [ 0.0686 0.0427 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) :
233.9521682475364 +83.4177783748443 [ 0.0686 0.0427 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 :
-0.202 -0.060 [0.107 0.097 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) 58528 [27] / z(spectroscopic) 0.21868 [0.00009] / cz 65558.6 [27.0]
   (Opt) C 2012ApJS..203...21A
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):
0.1159 [0.1038] A 2018yCat.1345....0G
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 (11) :
B 17.93 [~] D 2010A&A...518A..10V
V 17.37 [~] D 2010A&A...518A..10V
G 16.4760 [0.0165] C 2018yCat.1345....0G
J 15.404 [0.058] C 2003yCat.2246....0C
H 14.620 [0.066] C 2003yCat.2246....0C
K 14.009 [0.058] C 2003yCat.2246....0C
u (AB) 17.271 [0.009] B 2012ApJS..203...21A
g (AB) 16.965 [0.004] B 2012ApJS..203...21A
r (AB) 16.704 [0.005] B 2012ApJS..203...21A
i (AB) 16.522 [0.005] B 2012ApJS..203...21A
z (AB) 16.367 [0.008] B 2012ApJS..203...21A
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!).
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B1221+24 2FHL J1224.4+2435 RGB J1224+246 [MGL2009] BZB J1224+2436
ATO J186.1007+24.6065 3FHL J1224.4+2436 RX J1224.4+2436 [MML2015] 5BZB J1224+2436
BWE 1221+2452 FIRST J122424.1+243623 1RXS J122424.2+243618 [VV2000b] J122424.3+243624
CAIRNS J122424.18+243623.5 87GB 122151.4+245224 SDSS J122424.19+243623.5 [VV2003b] J122424.3+243624
1E 1221.8+2452 3HSP J122424.2+243623 TeV J1224+246 [VV2006b] J122424.3+243624
2E 2693 IERS B1221+248 TIC 284062833 [VV2010b] J122424.3+243624
2E 1221.9+2452 IVS B1221+248 2WHSP J122424.1+243623 [VV98b] J122424.3+243624
FBQS J1224+2436 1Jy 1221+245 WISEA J122424.18+243623.5 [ZEH2003] RX J1224.4+2436 1
2FGL J1224.4+2436 2MASS J12242418+2436234 WISE J122424.20+243623.6 Gaia DR2 3960155632997066496
3FGL J1224.5+2436 NVSS J122424+243623 WISE J122424.18+243623.5
4FGL J1224.4+2436 QSO B1221+248 9Y-MST J1224+2437
1FHL J1224.5+2437 QSO B1221+249 [DGT2001] B1221+2452

References (127 between 1850 and 2021) (Total 127)
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 : 7    V* : 1    PLX : 1    PM : 1   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1221+248

Link by name to the catalogue in VizieR :

BWE 1221+2452 2E 2693 FIRST J122424.1+243623 IERS B1221+248 2MASS J12242418+2436234
NVSS J122424+243623 1RXS J122424.2+243618 SDSS J122424.19+243623.5 WISEA J122424.18+243623.5 WISE J122424.20+243623.6
WISE J122424.18+243623.5 Gaia DR2 3960155632997066496

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2021.09.24-14:04:58

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