4C 55.17

Basic data :
ICRF J095738.1+552257 -- Seyfert 1 Galaxy 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 (2014ApJS,ICRF,...), QSO (2010ApJ,QSO,...), gam (2EG,3EG,...), Bla (2009A&A,[DGT2001],...), AGN (2007AJ,[SRC2012b]), X (2007AJ,RX,...), G (LEDA,SBSG), MIR (WISEA,WISE), Opt (LAMOST,SDSS), Sy1 (2022ApJS), BL? (2021MNRAS), Bz? (2013ApJS), AG? (2022ApJS), * (Gaia), NIR (2MASS) 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) : 09 57 38.1839604096 +55 22 57.754950636 (Optical) [ 0.0531 0.0485 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) : 09 54 14.3506859017 +55 37 16.449171180 [ 0.0531 0.0485 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) : 158.5985965023904 +47.9282057108624 [ 0.0531 0.0485 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 : 0.317 0.619 [0.064 0.065 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) 170098 [81] / z(spectroscopic) 0.90343 [0.00027] / cz 270841.5 [80.9]    (Opt) C 2015ApJS..219...12A Syntax of morphological type is : mtype quality bibcode mtype : Hubble morphological class (spirals, ellipticals, etc) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the morphological type reference Morphological type: E D ~ 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 (11) : B 18.24 [~] D 2010A&A...518A..10V V 17.89 [~] D 2010A&A...518A..10V G 17.238941 [0.004310] C 2020yCat.1350....0G J 15.676 [0.069] C 2010AJ....139.2360S H 14.944 [0.075] C 2010AJ....139.2360S K 14.190 [0.065] C 2010AJ....139.2360S u (AB) 18.282 [0.014] C 2020ApJS..249....3A g (AB) 17.901 [0.006] B 2020ApJS..249....3A r (AB) 17.577 [0.006] B 2020ApJS..249....3A i (AB) 17.375 [0.006] B 2020ApJS..249....3A z (AB) 17.189 [0.011] C 2020ApJS..249....3A	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.

ICRF J095738.1+552257	87GB 095412.4+553724	RX J0957.6+5523	[BDW2002] q0954+5537
BWE 0954+5537	GeV J0956+5508	1RXS J095737.3+552306	[DGT2001] B0954+556
4C 55.17	GRA B0953+55	S4 0954+55	[GW2008] CoNFIG 63
6C 095414+553716	IERS B0954+556	S4 0954+556	[HB93] 0954+556
7C 095414.30+553717.00	INTREF 398	SBSG 0954+556	[IN88] 0954+556
8C 0954+556	IVS B0954+556	SDSS J095738.18+552257.7	[MGL2009] BZQ J0957+5522
CJF B0954+556	JVAS B0954+556	SDSS J095738.19+552257.7	[MML2015] 5BZQ J0957+5522
CLASS J095738.1837+552257.740	JVAS J0957+553	SDSS J095738.17+552258.0	[P82] 0954+556
CRATES J095736+552258	JVAS J0957+5522	TGSSADR J095738.1+552257	[PW82] 0954+55
DA 278	1Jy 0954+55	TIC 377368250	[S77] 147
2EG J0957+5515	1Jy 0954+556	TXS 0954+556	[SRC2012b] J0957+5522
3EG J0952+5501	LAMOST J095738.18+552257.7	VCS1 J0957+5522	[VV2000] J095738.1+552258
EGR J0957+5513	LEDA 2821353	VIPS J09576+5522	[VV2003] J095738.1+552258
0FGL J0957.6+5522	2MASS J09573818+5522578	VIPS 282	[VV2006] J095738.1+552258
1FGL J0957.7+5523	MY 095414.2+553716.4	VLSSr J095738.4+552258	[VV2010] J095738.1+552258
2FGL J0957.7+5522	MY 095414.2+552257.7	VLSS J0957.6+5522	[VV96] J095738.1+552258
3FGL J0957.6+5523	NVSS J095738+552257	VSOP J0957+5522	[VV98] J095738.1+552258
4FGL J0957.6+5523	OHIO K 591	VSOP J0957+5523	[ZEH2003] RX J0957.6+5523 1
1FHL J0957.6+5522	QSO J0957+5522	WB 0954+5537	Gaia DR3 1045124392483104512
2FHL J0957.6+5523	QSO B0954+5537	WISEA J095738.17+552257.7	Gaia DR1 1045124388187803392
3FHL J0957.6+5523	QSO B0954+556	WISE J095738.17+552257.8	Gaia DR2 1045124392483104512
FIRST J095738.1+552257	RGB J0957.6+5522	WISE J095738.17+552257.7
1FLE J0957+5503	RGB J0957+553	WN B0954.2+5537
GB6 B0954+5537	RORF 0954+556	9Y-MST J0957+5522

References (434 between 1850 and 2024) (Total 434) 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 : 4C 55.17

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