IERS B1244-255

Query : IERS B1244-255

Basic data :
QSO J1246-2547 -- 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 (2014ApJS,GLEAM,...), QSO (2009ApJS,QSO,...), gam (0FGL,1FGL,...), Bla (2009A&A,[MGL2009],...), AGN (2011ApJ,CGRaBS), X (2009A&A,RX,...), MIR (WISEA,WISE), IR (IRAS,2MASSI), Q? (2021MNRAS), AG? (2022ApJS), G (LEDA), * (Gaia), cm (AT20G), NIR (2MASS)
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 46 46.80203943 -25 47 49.2889822 (Radio) [ 0.0340669 0.0355 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 44 06.71897089 -25 31 26.5536651 [ 0.0340669 0.0355 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) : 		301.61804987294 +37.06283990528 [ 0.0340669 0.0355 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 : 		0.270 0.035 [0.129 0.077 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) 135833 [~] / z(spectroscopic) 0.63 [~] / cz 188869 [~]
   (Opt) D 2017ApJS..233....3T
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): 		0.0979 [0.0932] A 2020yCat.1350....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 (8) :
B 17.65 [~] D 2008MNRAS.384..775M
V 17.41 [~] D 2010A&A...518A..10V
R 16.96 [~] D 2008ApJS..175...97H
G 17.299665 [0.012101] C 2020yCat.1350....0G
I 15.5 [~] D 2009ATel.1899....1B
J 14.384 [0.032] C 2003yCat.2246....0C
H 13.438 [0.024] C 2003yCat.2246....0C
K 12.468 [0.028] C 2003yCat.2246....0C
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 (65) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO J1246-2547 1Jy 1244-255 TGSSADR J124646.7-254751 [MGL2009] BZQ J1246-2547
AT20G J124646-254749 LEDA 2827294 TIC 9386019 [MML2015] 5BZQ J1246-2547
AT20G J124646.7-254749 2MASS J12464679-2547492 TXS 1244-255 [VV2000] J124646.8-254748
CGRaBS J1246-2547 2MASSI J1246467-254749 VLSSr J124646.8-254747 [VV2003] J124646.8-254748
0FGL J1246.6-2544 MRC 1244-255 VSOP J1246-2547 [VV2006] J124646.8-254748
1FGL J1246.7-2545 NVSS J124646-254748 WISEA J124646.80-254749.2 [VV2010] J124646.8-254748
2FGL J1246.7-2546 PCCS2 143 G301.62+37.06 WISE J124646.81-254749.1 [VV96] J124646.8-254748
3FGL J1246.7-2547 PKS 1244-255 WISE J124646.80-254749.2 [VV98] J124646.8-254748
4FGL J1246.7-2548 PKS J1246-2547 WISH B1244.1-2531 [WCO2009] J124702-254632
1FHL J1246.6-2548 PMN J1246-2547 WMAP 177 [WPW2003] J1246-2547
3FHL J1246.6-2548 QSO B1244-255 WMAP J1246-2547 EQ 1244-25
1FLE J1247-2541 RFC J1246-2547 WMAP J1246-2546 Gaia DR3 3496722305207229440
GLEAM J124647-254746 RORF 1244-255 WMAP J1246-2545 Gaia DR1 3496722300911513856
ICRF J124646.8-254749 RX J1246.7-2548 9Y-MST J1246-2548 Gaia DR2 3496722305207229440
IERS B1244-255 1RXS J124646.7-254749 [CAB95] IRAS F12440-2531
IRAS F12440-2531 SPASS J124648-254743 [HB93] 1244-255
IVS B1244-255 SQUAD DR1 J124646-254749 [MEM2008] 164

References (284 between 1850 and 2024) (Total 284)
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    PLX : 2    PM : 3   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1244-255

Link by name to the catalogue in VizieR :

IERS B1244-255 IRAS F12440-2531 2MASS J12464679-2547492 2MASSI J1246467-254749 NVSS J124646-254748
PKS 1244-255 PKS J1246-2547 PMN J1246-2547 1RXS J124646.7-254749 VSOP J1246-2547
WISEA J124646.80-254749.2 WISE J124646.81-254749.1 WISE J124646.80-254749.2 WISH B1244.1-2531 WMAP J1246-2547
WMAP J1246-2546 WMAP J1246-2545 Gaia DR3 3496722305207229440 Gaia DR1 3496722300911513856 Gaia DR2 3496722305207229440

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