3c454.3

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Basic data :
3C 454.3 -- Quasar 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 (Ref,3C,...), QSO (Ref,QSO,...), gam (1AGL,1AGLR,...), X (Ref,1E,...), Bla (Ref,RBPL,...), IR (2MASS,2MASSI,...), AGN (Ref,CGRaBS), smm (JCMTSE,JCMTSF), V* (AAVSO), * (Gaia), G (LEDA), UV (KUV) 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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 57.74798 +16 08 53.5611 (Radio) [ 0.11 0.04 0 ] A 2010AJ....139.1695L 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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 29.52521 +15 52 54.2230 [ 0.11 0.04 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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) : 086.11106055 -38.18381855 [ 0.11 0.04 0 ] 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 [51] / z(~) 0.859001 [0.000170] / cz 257522.02 [50.96]    D 2002LEDA.........0P 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) (incl) : inclination (in units of 15° from 0 to 7) (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 14.962 [~] D 2016A&A...595A...1G 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 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!).

3C 454.3	GeV J2253+1622	QSO J2253+1608	WMAP J2253+1609
1AGL J2254+1602	ICRF J225357.7+160853	QSO B2251+158	2XMMi J225357.7+160853
1AGL J2254+1603	IERS B2251+158	QSO B2251+1552	[BDW2002] q2251+1552
1AGLR J2254+1609	INTREF 1090	QSO B2251+159	[DGT2001] B2251+158
BWE 2251+1552	JCMTSE J225357.6+160856	RBPL J2253+1608	[GGR94] 2251+158
4C 15.76	JCMTSF J225357.6+160856	RBS 1911	[HB93] 2251+158
CGRaBS J2253+1608	JVAS J2253+1608	RGB J2253+161	[IN88] 2251+158
CLASS J225357.7533+160853.564	JVAS B2251+158	RGB J2254.0+1608	[KRL2007b] 398
Cul 2251+158	1Jy 2251+158	RORF 2251+158	[LBD96] J2253+1615
DA 586	1Jy 2251+15	RX J2253.9+1608	[MGL2009] BZQ J2253+1608
1E 2251.5+1553	KUV 22515+1553	1RXS J225358.0+160855	[MGL2015] 5BZQ J2253+1608
2E 4646	LEDA 2819327	S2 2251+15	[P82] 2251+158
2E 2251.5+1553	MASIV J2253+1608	SIM 2251+15.0	[S77] 380
2EG J2253+1615	2MASS J22535774+1608536	SWIFT J2253.9+1608	[SBS92] 2251+158
3EG J2254+1601	2MASSI J2253577+160853	TXS 2251+158	[VV2000] J225357.7+160853
EGR J2253+1606	MRC 2251+158	UT 2251+158	[VV2003] J225357.7+160853
0FGL J2254.0+1609	NEWPS5 J2253+1608	VLSS J2253.9+1608	[VV2006] J225357.7+160853
1FGL J2253.9+1608	NRAO 701	VRO 15.22.05	[VV2010] J225357.7+160853
2FGL J2253.9+1609	NVSS J225357+160853	VSOP J2253+1608	[VV96] J225357.7+160853
3FGL J2254.0+1608	OHIO Y 185	WB 2251+1552	[VV98] J225357.7+160853
1FHL J2253.9+1608	PBC J2253.9+1609	WISE J225357.74+160853.7	[VYP98] 2251+158
2FHL J2254.0+1613	PKS J2253+1608	WISE J225357.74+160853.6	[WCO2009] J225357+161011
Gaia DR1 2828719852612283776	PKS 2251+158	WK 463	[WTW94] 2251+158
GB6 B2251+1552	PKS 2251+15	WMAP J2254+1608	[ZEH2003] RX J2253.9+1608 2
GB6 J2253+1608	PLCKERC -857 G086.11-38.17	WMAP 55	AAVSO 2249+15
87GB 225129.8+155251	QSO B2251+155	WMAP J2253+1608

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References (2322 between 1850 and 2018) (Total 2322) 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 : 3c454.3

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