IERS B0839+187

Basic data :
QSO B0839+187 -- 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,BWE,...), QSO (2011MNRAS,QSO,...), Bla (2009A&A,[MGL2009],...), AGN (2020MNRAS,CGRaBS), * (EPIC,Gaia), MIR (WISEA,WISE), Opt (LAMOST,SDSS), G (LEDA), X (2009A&A), 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) : 08 42 05.0940565824 +18 35 40.988568300 (Optical) [ 0.0728 0.0293 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) : 08 39 14.0878213034 +18 46 27.335418010 [ 0.0728 0.0293 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) : 207.2750409824378 +32.4802840660432 [ 0.0728 0.0293 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 : 0.079 0.041 [0.084 0.061 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) 202636 [54] / z(spectroscopic) 1.27406 [0.00018] / cz 381953.6 [54.0]    (Opt) C 2015ApJS..219...12A 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): 0.0000265 0.0000097 -13 (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 (12) : B 16.63 [~] D 2010A&A...518A..10V V 16.36 [~] D 2010A&A...518A..10V R 16.56 [~] D 2008ApJS..175...97H G 16.717127 [0.003389] C 2020yCat.1350....0G J 15.704 [0.062] C 2010AJ....139.2360S H 15.185 [0.081] C 2010AJ....139.2360S K 14.545 [0.079] C 2010AJ....139.2360S u (AB) 16.930 [0.008] B 2015ApJS..219...12A g (AB) 16.819 [0.004] B 2015ApJS..219...12A r (AB) 16.547 [0.005] B 2015ApJS..219...12A i (AB) 16.512 [0.006] B 2015ApJS..219...12A z (AB) 16.556 [0.009] B 2015ApJS..219...12A	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: Position of VRO 19.08.01 seems in error of 15' (in 1967AJ.....72..757D). See also Specfind radio flux densities.

QSO B0839+187	1Jy 0839+187	QSO B0839+1846	[GR92] 0839+187
BWE 0839+1846	LAMOST J084205.09+183541.0	QSO J0842+1835	[HB93] 0839+187
CGRaBS J0842+1835	LAMOST J084205.10+183541.0	RORF 0839+187	[MGL2009] BZQ J0842+1835
CLASS J084205.0941+183540.981	LEDA 2825583	S3 0839+18	[MML2015] 5BZQ J0842+1835
CRATES J084205+183552	MASIV J0842+1835	SDSS J084205.09+183540.9	[P82] 0839+187
DW 0839+18	2MASS J08420509+1835411	SIM 0839+18.2	[PT2000] J0842+1835
EPIC 211891040	2MASSI J0842050+183541	SQUAD DR1 J084205+183540	[VV2000] J084205.1+183542
FIRST J084205.1+183541	MITG J084205+1835	TGSSADR J084205.0+183542	[VV2003] J084205.1+183542
GB6 B0839+1846	MITG J084204+1835	TIC 175291521	[VV2006] J084205.1+183542
87GB 083914.7+184639	MRC 0839+187	TXS 0839+187	[VV2010] J084205.1+183542
GLEAM J084205+183536	NRAO 0839+18	UT 0839+187	[VV96] J084205.1+183542
ICRF J084205.0+183540	NVSS J084205+183541	VIPS J08420+1835	[VV98] J084205.1+183542
IERS B0839+187	OHIO J 164	VRO 19.08.01	Gaia DR3 660927404509396224
IVS B0839+187	OTL 0839-187	VSOP J0842+1835	Gaia DR1 660927400213235200
JVAS B0839+187	PKS 0839+18	WB 0839+1846	Gaia DR2 660927404509396224
JVAS J0842+1835	PKS 0839+187	WISEA J084205.09+183541.0
1Jy 0839+18	PKS J0842+1835	WISE J084205.09+183541.0

References (185 between 1850 and 2024) (Total 185) 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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Data at NED - NASA/IPAC Extragalactic Database : IERS B0839+187

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