QSO B2356-309

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Basic data :
QSO B2356-309 -- BL Lac - type object 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,...), X (2009A&A,1E,...), gam (1FGL,2FGL,...), Bla (2012ApJ,[DGT2001],...), G (2dFGRS,6dFGS,...), * (CTLGD,CTLGM,...), Bz? (2019A&A,3HSP,...), IR (2MASS,WISEA,...), UV (2EUVE,EUVE), QSO (QSO), AGN (2011ApJ), Rad (NVSS) 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) : 23 59 07.9032684889 -30 37 40.667900741 (Optical) [ 0.1058 0.0979 90 ] A 2018yCat.1345....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) : 23 56 33.7633644143 -30 54 23.060796409 [ 0.1058 0.0979 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) : 012.8391433191945 -78.0354728471458 [ 0.1058 0.0979 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 : 0.254 -0.220 [0.200 0.214 90] A 2018yCat.1345....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) 45529 [55] / z(~) 0.16539 [0.00018] / cz 49582.0 [55.0]    (Opt) C 2009MNRAS.399..683J 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): 0.1477 [0.1455] A 2018yCat.1345....0G 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): 0.147 0.147 90 (NIR) C 2006AJ....131.1163S 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 18.414 [~] D 2001MNRAS.328.1039C V 16.44 [~] D 2011MNRAS.413.1024P R 16.795 [~] D 2001MNRAS.328.1039C G 17.3664 [0.0075] C 2018yCat.1345....0G J 14.986 [0.143] D 2006AJ....131.1163S H 14.130 [0.148] D 2006AJ....131.1163S K 13.909 [0.131] D 2006AJ....131.1163S	SIMBAD with radius arcmin Interactive AladinLite view 2MASS DSS SDSSXMMIRACIRISGALEX VizieR photometry viewer    within radius 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!).

QSO B2356-309	1FHL J2359.2-3037	NVSS J235907-303740	9Y-MST J2359-3039
CTLGD 3010	3FHL J2359.1-3038	PBC J2359.1-3035	[DGT2001] B2356-309
CTLGM 1680	1H 2351-315	RBS 2070	[MGL2009] BZB J2359-3037
2dFGRS TGS357Z081	1H 2354-315	1RXS J235908.0-303740	[MML2015] 5BZB J2359-3037
6dFGS gJ235907.9-303741	HESS J2359-306	SHBL J235907.9-303739	[VV2000b] J235907.8-303739
1E 2356-30.9	H 2356-309	SWIFT J2358.9-3034	[VV2003b] J235907.8-303739
1ES 2356-30.9	H 2354-315	SWIFT J2359.0-3038	[VV2006b] J235907.8-303739
2EUVE J2359-30.6	H 2351-31	TeV J2359-306	[VV2010b] J235907.8-303739
EUVE J2359-30.6	3HSP J235907.9-303740	2WHSP J235907.8-303740	[VV98b] J235907.8-303739
1FGL J2359.0-3035	LEDA 141426	WISEA J235907.90-303740.6	Gaia DR2 2314796371054438016
2FGL J2359.0-3037	2MASS J23590791-3037406	WISE J235907.88-303740.5
3FGL J2359.3-3038	2MASX J23590793-3037409	WISE J235907.90-303740.6
4FGL J2359.0-3038	2MAXI J2359-307	2XMM J235907.7-303739

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References (256 between 1850 and 2021) (Total 256) 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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : QSO B2356-309

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