PKS 2155-304

Basic data :
QSO B2155-304 -- 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: Rad (2020A&A,CRATES,...), gam (2AGL,3EG,...), X (2009A&A,2A,...), BLL (2010ApJ,SHBL,...), Bla (2012ApJ,[DGT2001],...), QSO (2011MNRAS,QSO,...), Bz? (2019A&A,3HSP,...), AGN (2011ApJ,CGRaBS), UV (2EUVE,EUVE,...), V* (2018AJ,AAVSO), smm (JCMTSE,JCMTSF), MIR (WISEA,WISE), BL? (2021MNRAS), G (2012A&A), * (Gaia), cm (AT20G), 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) : 21 58 52.0652249880 -30 13 32.118447792 (Optical) [ 0.0171 0.0137 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) : 21 55 58.3502869567 -30 27 54.543262924 [ 0.0171 0.0137 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) : 017.7304978472482 -52.2458531252353 [ 0.0171 0.0137 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 : -0.083 0.012 [0.022 0.018 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) 32771 [600] / z(emission) 0.116 [0.002] / cz 34776 [600]    D 2013MNRAS.435.1233G 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): 0.0158 [0.0191] 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 (7) : B 13.36 [~] D 2010A&A...518A..10V V 13.09 [~] D 2010A&A...518A..10V R 12.62 [~] D 2008ApJS..175...97H G 13.704623 [0.017850] C 2020yCat.1350....0G J 11.398 [0.027] C 2003yCat.2246....0C H 10.46 [0.01] B 2012AJ....144..112F K 10.134 [0.023] 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 B2155-304	3FHL J2158.8-3013	RBS 1807	2XMM J215852.0-301332
2A 2151-316	GLEAM J215852-301318	2RE J2158-301	XSS J21583-3004
3A 2156-306	1H 2156-304	2RE J215852-301327	9Y-MST J2158-3013
2AGL J2157-3015	HESS J2158-302	RE J215852-301324	[BDW2002] q2155-3027
AT20G J215852-301332	H 2155-304	RE J2158-301	[DGT2001] B2155-304
ATO J329.7169-30.2256	H 2154-304	RFC J2158-3013	[FS2003] 1142
CGRaBS J2158-3013	H 2154-30	RORF 2155-304	[HB93] 2155-304
CRATES J215852-301328	3HSP J215852.0-301332	RX J2158.8-3013	[LBD96] J2155-304
2E 4544	ICRF J215852.0-301332	1RXS J215852.2-301338	[MGL2009] BZB J2158-3013
2E 2155.9-3027	IERS B2155-304	SHBL J215852.0-301331	[MML2015] 5BZB J2158-3013
3EG J2158-3023	INTREF 1064	SPASS J215851-301340	[QC93] 2155-304
EGR J2200-3015	IVS B2155-304	SUMSS J215852-301326	[VV2000b] J215852.0-301332
1ES 2155-30.4	JCMTSE J215852.2-301332	TeV J2158-302	[VV2003b] J215852.0-301332
2EUVE J2158-30.2	JCMTSF J215852.2-301332	TGSSADR J215852.0-301324	[VV2006b] J215852.0-301332
EUVE J2158-30.2	2MASS J21585206-3013321	TIC 229013191	[VV2010b] J215852.0-301332
0FGL J2158.8-3014	NVSS J215852-301330	TXS 2155-304	[VV98b] J215852.0-301332
1FGL J2158.8-3013	PKS 2155-304	VLSSr J215852.6-301328	AAVSO 2153-30
2FGL J2158.8-3013	PKS J2158-3013	VLSS J2158.8-3013	Gaia DR3 6616660280724162688
3FGL J2158.8-3013	PKS 2155-30	2WHSP J215852.0-301332	Gaia DR1 6616660280724162688
4FGL J2158.8-3013	PMN J2158-3013	WISEA J215852.06-301332.0	Gaia DR2 6616660280724162688
1FHL J2158.8-3013	QSO J2158-3013	WISE J215852.05-301332.0
2FHL J2158.8-3013	QSO B2155-3027	WISE J215852.06-301332.0

References (1731 between 1850 and 2024) (Total 1731) 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 : PKS 2155-304

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