QSO B1517+656

Basic data :
QSO B1517+656 -- 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: BLL (2010ApJ,SHBL,...), Rad (BWE,CLASS,...), gam (1FGL,2FGL,...), X (2009A&A,1ES,...), Bla (2016ApJS,[DGT2001],...), Bz? (2019A&A,3HSP,...), QSO (QSO,[SBS92]), MIR (WISEA,WISE), AGN (2011ApJ), BL? (2021MNRAS), * (Gaia), NIR (2MASS) 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) : 15 17 47.5882526184 +65 25 23.285593704 (Optical) [ 0.0502 0.0498 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) : 15 17 05.1199629686 +65 36 15.821960049 [ 0.0502 0.0498 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) : 102.2607707243118 +45.3885826512979 [ 0.0502 0.0498 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 : -0.061 0.005 [0.066 0.069 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) 145927 [~] / z(spectroscopic) 0.702 [~] / cz 210454 [~]    (Opt) D 2019A&A...632A..77C 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): 0.0319 [0.0508] 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 (6) : V 15.9 [~] E ~ R 16.7 [~] E 2009A&A...495..691M G 17.143776 [0.006458] C 2020yCat.1350....0G J 14.78 [0.04] C 2003yCat.2246....0C H 14.14 [0.05] C 2003yCat.2246....0C K 13.62 [0.06] 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 B1517+656	GB6 J1517+6524	RGB J1517+654B	[DGT2001] B1517+656
BWE 1517+6535	87GB 151706.4+653539	RX J1517.7+6525	[MGL2009] BZB J1517+6525
CLASS J151747.5793+652523.282	1H 1515+660	1RXS J151747.3+652522	[MML2015] 5BZB J1517+6525
1ES 1517+65.6	H 1517+656	SHBL J151747.4+652523	[SBS92] 1517+656
1FGL J1517.8+6530	3HSP J151747.6+652523	TIC 202469087	[VV2000b] J151747.6+652524
2FGL J1518.0+6526	IERS B1517+656	2WHSP J151747.5+652523	[VV2003b] J151747.6+652524
3FGL J1517.6+6524	ILT J151747.50+652524.6	WISEA J151747.59+652523.3	[VV2006b] J151747.6+652524
4FGL J1517.7+6525	INTREF 643	WISE J151747.59+652523.3	[VV2010b] J151747.6+652524
1FHL J1517.9+6526	IVS B1517+656	WN B1517+6536	[VV98b] J151747.6+652524
2FHL J1517.7+6526	2MASS J15174758+6525232	WN B1517.0+6536	[ZEH2003] RX J1517.7+6525 1
3FHL J1517.7+6525	NVSS J151747+652523	9Y-MST J1517+6525	Gaia DR3 1644217148535692032
GB6 B1517+6535	RBS 1481	[BSF97] J151747.58+652523.3	Gaia DR2 1644217148535692032

References (123 between 1850 and 2024) (Total 123) 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 : QSO B1517+656

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