IERS B1958-179

Basic data :
QSO B1958-179 -- 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 (2010AJ,ICRF,...), QSO (2010ApJ,QSO,...), gam (1FGL,2FGL,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,2E,...), AGN (2011ApJ,CGRaBS), MIR (WISEA,WISE), * (Gaia), cm (AT20G), 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) : 20 00 57.09043927 -17 48 57.6726139 (Radio) [ 0.0308279 0.0311 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) : 19 58 04.61202544 -17 57 17.0089266 [ 0.0308279 0.0311 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) : 024.00983290055 -23.11564206422 [ 0.0308279 0.0311 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 : 0.015 0.117 [0.110 0.071 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) 138722 [~] / z(spectroscopic) 0.65 [~] / cz 194865 [~]    (Opt) D 2017ApJS..233....3T 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): 0.0000118 0.0000045 -2 (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 (7) : B 18.02 [~] D 2008MNRAS.384..775M V 18.60 [~] D 2010ApJ...710..764K R 15.33 [~] D 2008ApJS..175...97H G 17.894749 [0.030074] C 2020yCat.1350....0G J 15.492 [0.060] C 2003yCat.2246....0C H 14.528 [0.055] C 2003yCat.2246....0C K 13.721 [0.047] 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 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.

QSO B1958-179	IVS B1958-179	VSOP J2000-1748	[QC93] 1958-179
AT20G J200057-174857	1Jy 1958-179	WISEA J200057.09-174857.7	[VV2000] J200057.1-174858
AT20G J200057.0-174857	2MASS J20005709-1748576	WISE J200057.09-174857.5	[VV2003] J200057.1-174858
CGRaBS J2000-1748	2MASSI J2000570-174857	WISE J200057.09-174857.7	[VV2006] J200057.1-174858
2E 1958.0-1757	NVSS J200057-174857	WISH B1958.0-1757	[VV2010] J200057.1-174858
2E 4310	OHIO V -198	WMAP 11	[VV96] J200057.1-174858
1FGL J2000.9-1749	PKS 1958-179	WMAP J2000-1749	[VV98] J200057.1-174858
2FGL J2000.8-1751	PKS J2000-1748	WMAP J2000-1746	[WPW2003] J2000-1748
3FGL J2001.0-1750	PMN J2000-1748	9Y-MST J2000-1748	[WTW94] 1958-179
4FGL J2000.9-1748	QSO J2000-1748	[DSJ85] 1958-179	EQ 1958-17
1FHL J2001.1-1752	RORF 1958-179	[HB93] 1958-179	Gaia DR3 6867840791514236288
2FHL J2000.9-1749	1RXS J200057.3-174856	[MEM2008] 266	Gaia DR1 6867840791514236288
3FHL J2000.9-1748	TIC 160895726	[MGL2009] BZQ J2000-1748	Gaia DR2 6867840791514236288
ICRF J200057.0-174857	TXS 1958-179	[MML2015] 5BZQ J2000-1748
IERS B1958-179	VCS1 J2000-1748	[P82] 1958-179

References (247 between 1850 and 2023) (Total 247) 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

Collections of Measurements

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1958-179

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