7C 083849.60+453626.00

Basic data :
US 1498 -- 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: QSO (2011MNRAS,QSO,...), Rad (2020A&A,7C,...), Bla (2009A&A,[MGL2009],...), MIR (WISEA,WISE), Opt (LAMOST,SDSS), AGN (2020MNRAS), * (Gaia), blu (US), 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 15.3516545208 +45 25 44.182186752 (Optical) [ 0.0674 0.0536 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 38 49.6034946985 +45 36 30.081352510 [ 0.0674 0.0536 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) : 174.9437608053220 +37.9673227999692 [ 0.0674 0.0536 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 : 0.070 -0.055 [0.085 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) 211596 [872] / z(spectroscopic) 1.40797 [0.00291] / cz 422098.8 [872.4]    D 2009ApJS..182..543A 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): 0.0087 [0.0865] 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 (12) : B 18.16 [~] D 2010A&A...518A..10V V 17.70 [~] D 2010A&A...518A..10V R 16.5 [~] E 2009A&A...495..691M G 17.360697 [0.003440] C 2020yCat.1350....0G J 16.234 [0.111] C 2010AJ....139.2360S H 15.172 [0.108] C 2010AJ....139.2360S K 15.213 [0.132] C 2010AJ....139.2360S u (AB) 17.9278 [0.0168] C 2020ApJS..250....8L g (AB) 17.7064 [0.0177] C 2020ApJS..250....8L r (AB) 17.2806 [0.0131] C 2020ApJS..250....8L i (AB) 17.1609 [0.0175] C 2020ApJS..250....8L z (AB) 17.1685 [0.0199] 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!).
Some important notes on this object about identifications and objects associations. notes: See also Specfind radio flux densities.

7C 083849.60+453626.00	LAMOST J084215.36+452544.2	US 1498	[MML2015] 5BZQ J0842+4525
BWE 0838+4536	2MASS J08421537+4525441	WISEA J084215.34+452544.2	[VV2000] J084215.2+452544
CLASS J084215.3527+452544.182	2MASSI J0842153+452543	WISE J084215.34+452544.2	[VV2003] J084215.2+452544
FIRST J084215.3+452544	NVSS J084215+452543	WN B0838.8+4536	[VV2006] J084215.2+452544
GB6 B0838+4536	QSO B0838+4536	WSTB 55W106	[VV2010] J084215.2+452544
GB6 J0842+4525	QSO B0838+456	WSTB 64W176	[VV96] J084215.2+452544
87GB 083849.4+453638	SDSS J084215.36+452544.1	WSTB 64W2290	[VV98] J084215.2+452544
87GB 083849.3+453638	SDSS J084215.36+452544.2	[HB93] 0838+456	Gaia DR3 917482740449719936
ICRF J084215.3+452544	SDSS J084215.35+452544.1	[ISW2010] GMRT J084215+452536	Gaia DR2 917482740449719936
IERS B0838+456	TIC 376470411	[MGL2009] BZQ J0842+4525

References (61 between 1850 and 2024) (Total 61) 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 :

Data at NED - NASA/IPAC Extragalactic Database : US 1498

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