3C 454.3

Basic data :
3C 454.3 -- 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: Rad (2010RMxAC,3C,...), QSO (2009ApJS,QSO,...), gam (1AGL,2AGL,...), Bla (2009A&A,RBPL,...), X (2009A&A,1E,...), AGN (2011ApJ,CGRaBS), V* (2018AJ,AAVSO), smm (JCMTSE,JCMTSF), MIR (WISEA,WISE), Opt (ATO,LAMOST), G (LEDA), * (Gaia), UV (KUV), 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) : 22 53 57.7480438728 +16 08 53.561508864 (Optical) [ 0.0324 0.0294 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) : 22 51 29.5273490541 +15 52 54.239629667 [ 0.0324 0.0294 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) : 086.1110694392465 -38.1838177880031 [ 0.0324 0.0294 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 : -0.060 -0.030 [0.041 0.033 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) 165232 [~] / z(emission) 0.859 [~] / cz 257522 [~]    (Opt) D 2016ApJ...818..113N 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): 0.0000122 0.0000052 8 (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 16.57 [~] D 2010A&A...518A..10V V 16.10 [~] D 2010A&A...518A..10V R 15.22 [~] D 2008ApJS..175...97H G 15.383571 [0.041607] C 2020yCat.1350....0G J 14.494 [0.030] C 2003yCat.2246....0C H 13.855 [0.030] C 2003yCat.2246....0C K 13.061 [0.027] 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 Gra 2251+15 See also Specfind radio flux densities.

3C 454.3	87GB 225129.8+155251	QSO B2251+158	9Y-MST J2254+1609
1AGL J2254+1602	GeV J2253+1622	QSO B2251+1552	[BDW2002] q2251+1552
1AGL J2254+1603	ICRF J225357.7+160853	QSO B2251+159	[DGT2001] B2251+158
2AGL J2254+1609	IERS B2251+158	RBPL J2253+1608	[GGR94] 2251+158
1AGLR J2254+1609	INTREF 1090	RBS 1911	[HB93] 2251+158
ATO J343.4906+16.1482	JCMTSE J225357.6+160856	RGB J2254.0+1608	[IN88] 2251+158
BWE 2251+1552	JCMTSF J225357.6+160856	RGB J2253+161	[KRL2007b] 398
4C 15.76	JVAS J2253+1608	RORF 2251+158	[LBD96] J2253+1615
CGRaBS J2253+1608	JVAS B2251+158	RX J2253.9+1608	[MGL2009] BZQ J2253+1608
CLASS J225357.7533+160853.564	1Jy 2251+158	1RXS J225358.0+160855	[MML2015] 5BZQ J2253+1608
CRATES J225358+160853	1Jy 2251+15	S2 2251+15	[P82] 2251+158
Cul 2251+158	KUV 22515+1553	SIM 2251+15.0	[S77] 380
DA 586	LAMOST J225357.74+160853.6	SQUAD DR1 J225357+160853	[SBS92] 2251+158
1E 2251.5+1553	LEDA 2819327	SWIFT J2253.9+1608	[VV2000] J225357.7+160853
2E 4646	MASIV J2253+1608	TIC 91170156	[VV2003] J225357.7+160853
2E 2251.5+1553	2MASS J22535774+1608536	TXS 2251+158	[VV2006] J225357.7+160853
2EG J2253+1615	2MASSI J2253577+160853	UT 2251+158	[VV2010] J225357.7+160853
3EG J2254+1601	MRC 2251+158	VLSS J2253.9+1608	[VV96] J225357.7+160853
EGR J2253+1606	NEWPS5 J2253+1608	VRO 15.22.05	[VV98] J225357.7+160853
0FGL J2254.0+1609	NRAO 701	VSOP J2253+1608	[VYP98] 2251+158
1FGL J2253.9+1608	NVSS J225357+160853	WB 2251+1552	[WCO2009] J225357+161011
2FGL J2253.9+1609	OHIO Y 185	WISEA J225357.74+160853.7	[WTW94] 2251+158
3FGL J2254.0+1608	PBC J2253.9+1609	WISE J225357.74+160853.6	[ZEH2003] RX J2253.9+1608 2
4FGL J2253.9+1609	PCCS1 030 G086.10-38.18	WISE J225357.74+160853.7	AAVSO 2249+15
1FHL J2253.9+1608	PKS J2253+1608	WK 463	Gaia DR2 2828719856907485056
2FHL J2254.0+1613	PKS 2251+158	WMAP J2254+1608	Gaia DR3 2828719856907485056
3FHL J2253.9+1608	PKS 2251+15	WMAP 55	Gaia DR1 2828719852612283776
1FLE J2254+1617	PLCKERC -857 G086.11-38.17	WMAP J2253+1608
GB6 B2251+1552	QSO B2251+155	WMAP J2253+1609
GB6 J2253+1608	QSO J2253+1608	2XMMi J225357.7+160853

References (2783 between 1850 and 2023) (Total 2783) 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 : 3C 454.3

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