IERS B0123+257

Basic data :
4C 25.05 -- 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 (2010AJ,4C,...), QSO (2005ApJ,QSO,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,RX,...), AGN (2011AJ,CGRaBS), MIR (WISEA,WISE), Opt (LAMOST,SDSS), Bz? ([SRM2005]), G (LEDA), * (Gaia), BH? ([KB2007]), NIR (2MASS), IR (2MASSI) 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) : 01 26 42.79263357 +25 59 01.3001559 (Radio) [ 0.0434178 0.0628 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) : 01 23 57.25869075 +25 43 27.8366638 [ 0.0434178 0.0628 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) : 132.76688290036 -36.21348674645 [ 0.0434178 0.0628 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 : 0.208 -0.006 [0.175 0.105 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) 251138 [78] / z(spectroscopic) 2.36500 [0.00026] / cz 709009.2 [77.9]    (Opt) C 2020ApJS..249....3A 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): 0.1025 [0.1342] A 2020yCat.1350....0G Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) angle : orientation angle (in degrees) (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam) quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the angular size reference Angular size (arcmin): 0.0000137 0.0000052 -6 (Rad) D 2010AJ....139.1713C 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) : V 17.50 [~] E ~ R 17.86 [~] D 2008ApJS..175...97H G 18.097754 [0.003467] C 2020yCat.1350....0G J 16.614 [0.140] D 2003yCat.2246....0C H 15.936 [0.183] D 2003yCat.2246....0C K 15.148 [0.142] D 2003yCat.2246....0C u (AB) 18.864 [0.024] C 2020ApJS..249....3A g (AB) 18.204 [0.007] B 2020ApJS..249....3A r (AB) 18.127 [0.008] B 2020ApJS..249....3A i (AB) 18.017 [0.009] B 2020ApJS..249....3A z (AB) 17.717 [0.019] 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 points in this preview 2MASS DSS SDSSXMMIRACIRISGALEX All (CDSPortal) Send to 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!).
Some important notes on this object about identifications and objects associations. notes: See also Specfind radio flux densities.

4C 25.05	LAMOST J012642.80+255901.3	RORF 0123+257	[MGL2009] BZQ J0126+2559
B2 0123+25	LEDA 2819875	RX J0126.7+2558	[MML2015] 5BZQ J0126+2559
B2.2 0123+25	MASIV J0126+2559	RX J0126.7+2559	[S77] 29
BWE 0123+2543	2MASS J01264276+2559013	1RXS J012642.4+255858	[SRM2005] J012642.79+255901.2
CGRaBS J0126+2559	2MASSI J0126427+255901	SDSS J012642.79+255901.2	[VV2000] J012642.8+255901
CLASS J012642.7903+255901.270	MITG J012643+2558	TGSSADR J012642.7+255901	[VV2003] J012642.8+255901
CRATES J012642+255902	NVSS J012642+255900	TIC 238452644	[VV2006] J012642.8+255901
EF B0123+2543	OHIO C 240	TXS 0123+257	[VV2010] J012642.8+255901
GB6 B0123+2543	PKS J0126+2559	VLSSr J012643.0+255903	[VV96] J012642.8+255901
87GB 012357.2+254322	PKS 0123+257	VRO 25.01.03	[VV98] J012642.8+255901
GLEAM J012642+255858	PKS 0123+25	VSOP J0126+2559	[ZEH2003] RX J0126.7+2558 2
ICRF J012642.7+255901	QSO B0123+257	VSOP J0126+2558	Gaia DR3 295350607295092480
IERS B0123+257	QSO J0126+2559	WB 0123+2543	Gaia DR1 295350607295092480
IVS B0123+257	QSO B0123+25	WISEA J012642.79+255901.2	Gaia DR2 295350607295092480
JVAS B0123+257	RFC J0126+2559	WISE J012642.79+255901.2
JVAS J0126+2559	RGB J0126.7+2559	[HB93] 0123+257
LAMOST J012642.79+255901.2	RGB J0126+259	[KB2007] J012642.8+255901.3

References (166 between 1850 and 2024) (Total 166) Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object

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External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B0123+257

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