IERS B1717+178

Basic data :
QSO B1717+178 -- 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: Q? (), Rad (2010AJ,BWE,...), BLL (2010ApJ,[VV2000b],...), gam (0FGL,1FGL,...), Bla ([DGT2001],[IN88],...), QSO (2016A&A,QSO,...), X (2009A&A,2E,...), AGN (2011AJ,CGRaBS), Bz? (2013ApJS,[SRM2005]), MIR (WISEA,WISE), V* (2018AJ), * (Gaia), NIR (2MASS), Opt (ATO) 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) : 17 19 13.04848035 +17 45 06.4371847 (Radio) [ 0.0347145 0.0378 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) : 17 17 00.33387239 +17 48 08.5634667 [ 0.0347145 0.0378 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) : 039.52484839907 +28.09699414828 [ 0.0347145 0.0378 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 : -0.116 -0.152 [0.078 0.090 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) 38281 [~] / z(spectroscopic) 0.137 [~] / cz 41072 [~]    D 2005ApJ...626...95S 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): 0.0000112 0.0000043 3 (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 20.10 [~] D 2010A&A...518A..10V V 19.1 [~] D 2010A&A...518A..10V R 17.28 [~] D 2008ApJS..175...97H G 17.233200 [0.044431] C 2020yCat.1350....0G J 16.876 [0.157] D 2003yCat.2246....0C H 15.986 [0.159] D 2003yCat.2246....0C K 14.932 [0.102] D 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 B1717+178	87GB 171659.6+174808	QSO B1717+177	[HB93] 1717+178
ATO J259.8043+17.7517	GLEAM J171913+174510	QSO J1719+1745	[IN88] 1717+178
BWE 1716+1748	ICRF J171913.0+174506	RFC J1719+1745	[MGL2009] BZB J1719+1745
CGRaBS J1719+1745	IERS B1717+178	RGB J1719+177	[MML2015] 5BZB J1719+1745
CLASS J171913.0495+174506.440	IVS B1717+178	RGB J1719.2+1745	[P82] 1717+178
CRATES J171913+174506	JVAS B1717+178	RORF 1717+178	[SRM2005] J171913.04+174506.4
2E 3880	JVAS J1719+1745	RX J1719.2+1745	[VV2000b] J171913.1+174507
2E 1717.0+1748	MASIV J1719+1745	S3 1717+17	[VV2003b] J171913.1+174507
0FGL J1719.3+1746	2MASS J17191305+1745063	TGSSADR J171913.0+174505	[VV2006b] J171913.1+174507
1FGL J1719.2+1745	MITG J171914+1744a	TIC 165545613	[VV2010b] J171913.1+174507
2FGL J1719.3+1744	NRAO 1717+17	TXS 1717+178	[VV98b] J171913.1+174507
3FGL J1719.2+1744	NVSS J171913+174506	WB 1716+1748	EQ 1717+17
4FGL J1719.2+1745	OHIO T 129	WISEA J171913.05+174506.5	Gaia DR3 4547472344639754240
1FHL J1719.1+1745	PKS J1719+1745	WISE J171913.05+174506.5	Gaia DR1 4547472340343476480
3FHL J1719.2+1745	PKS 1717+178	9Y-MST J1719+1745	Gaia DR2 4547472344639754240
GB6 B1717+1748	PKS 1717+177	[DGT2001] B1717+178

References (219 between 1850 and 2024) (Total 219) 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 B1717+178

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