IERS B0256-005

Basic data :
LBQS 0256-0031 -- 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: QSO (2011A&A,LBQS,...), Rad (FIRST,ICRF,...), Bla (2009A&A,[MGL2009],...), Q? (FBQS,[BC86],...), IR (2MASS,2MASSI,...), * (PB,Gaia), X (2009A&A,1WGA), BLL (2019ApJS), G ([LCB92]), blu (US), cm (AT20G), UV (KUV) 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) : 02 59 28.5159902664 -00 19 59.976263532 (Optical) [ 0.0802 0.0802 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) : 02 56 55.1227707625 -00 31 54.277478731 [ 0.0802 0.0802 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) : 177.1895914001742 -49.2281305115512 [ 0.0802 0.0802 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 : 0.152 0.058 [0.098 0.096 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) 239829 [36] / z(spectroscopic) 1.99987 [0.00012] / cz 599545.9 [36.0]    (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): 0.0110 [0.1427] 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 (12) : B 17.74 [~] D 2010A&A...518A..10V V 17.58 [~] D 2010A&A...518A..10V R 17 [~] E 2009A&A...495..691M G 17.322783 [0.004560] C 2020yCat.1350....0G J 15.939 [0.071] C 2010AJ....139.2360S H (AB) 16.660 [0.010] B 2013ApJS..206....4K K 14.492 [0.072] C 2010AJ....139.2360S u (AB) 17.3545 [0.0140] C 2020ApJS..250....8L g (AB) 17.4153 [0.0151] C 2020ApJS..250....8L r (AB) 17.3131 [0.0161] C 2020ApJS..250....8L i (AB) 17.0128 [0.0180] C 2020ApJS..250....8L z (AB) 16.8253 [0.0192] C 2020ApJS..250....8L	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!).

LBQS 0256-0031	PB 6960	1WGA J0259.4-0019	[VV2000] J025928.5-002000
AT20G J025928-001959	PKS J0259-0019	WISEA J025928.50-002000.0	[VV2003] J025928.5-002000
FBQS J0259-0019	PKS 0256-005	WISE J025928.50-002000.0	[VV2006] J025928.5-002000
FIRST J025928.5-001959	QSO B0256-005	[BC86] 0256-0031	[VV2010] J025928.5-002000
HBQS 0256-0031	QSO J0259-0019	[CLB91] 025655.1-003154	[VV96] J025928.5-002000
ICRF J025928.5-001959	QSO B0256-0031	[CTL96] 025655.14-003154.0	[VV98] J025928.5-002000
IERS B0256-005	SDSS J025928.52-002000.0	[HB93] 0256-005B	[WPW2003] J0259-0019
IVS B0256-005	SDSS J025928.51-001959.9	[HH86] 0256-005B	Gaia EDR3 5188132477079990528
KUV 02569-0032	SDSS J025928.51-002000.0	[LCB92] 0256-0031	Gaia DR1 5188132477079990528
2MASS J02592851-0020001	SDSS J025928.52-001959.9	[LPZ94] 81	Gaia DR2 5188132477079990528
2MASSI J0259285-002000	TIC 439901963	[MGL2009] BZQ J0259-0020
NVSS J025928-002000	US 3464	[MML2015] 5BZQ J0259-0020
OHIO D -095	VCS1 J0259-0019	[S77] 68

References (126 between 1850 and 2022) (Total 126) 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 B0256-005

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