3C 345

Basic data :
NAME Her B -- 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 (2012ApJ,B2,...), QSO (2010ApJ,QSO,...), X (2007AJ,2E,...), Bla (2009A&A,[DGT2001],...), gam (EGR,0FGL,...), AGN (2007AJ,CGRaBS,...), Q? (2021MNRAS,F2M,...), IR (IRAS,2MASSI,...), * (2009ApJS,FBS,...), smm (JCMTSE,JCMTSF), MIR (WISEA,WISE), Sy1 (2022ApJS), Bz? ([SRM2005]), AG? (2022ApJS), V* (AAVSO), G (LEDA), BH? ([KB2007]), NIR (2MASS), Opt (SDSS) 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) : 16 42 58.80997043 +39 48 36.9939552 (Radio) [ 0.0323783 0.0341 0 ] A 2020A&A...644A.159C 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) : 16 41 17.62060390 +39 54 10.8902681 [ 0.0323783 0.0341 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] : 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) : 063.45502335072 +40.94883963523 [ 0.0323783 0.0341 0 ] 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 : -0.478 -0.360 [0.120 0.144 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) 130276 [150] / z(emission) 0.59280791 [0.0005] / cz 177719.3405 [150]    (Opt) C 2022ApJS..261....2K 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): 0.1854 [0.1073] A 2020yCat.1350....0G 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 (12) : B 16.81 [~] D 2010A&A...518A..10V V 16.59 [~] D 2010A&A...518A..10V R 16.84 [~] D 2008ApJS..175...97H G 18.168676 [0.006164] C 2020yCat.1350....0G J 14.255 [0.031] C 2010AJ....139.2360S H 13.304 [0.028] C 2010AJ....139.2360S K 12.398 [0.026] C 2010AJ....139.2360S u (AB) 16.161 [0.005] B 2015ApJS..219...12A g (AB) 15.690 [0.003] B 2015ApJS..219...12A r (AB) 15.392 [0.004] B 2015ApJS..219...12A i (AB) 15.100 [0.004] B 2015ApJS..219...12A z (AB) 14.861 [0.005] B 2015ApJS..219...12A	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: Could be associated to CLASS J1641+3935 according to 2009ApJ...700..597A See also Specfind radio flux densities.

NAME Her B	GB6 B1641+3954	QSO B1641+3954	[BDW2002] q1641+3954
B2 1641+39	87GB 164117.2+395405	RBS 1603	[CAB95] IRAS F16413+3954
B2.3 1641+39	ICRF J164258.8+394836	RFC J1642+3948	[CCS88] 1641.3+3954
B3 1641+399	IERS B1641+399	RGB J1643.0+3948	[CGL99] 17
BWE 1641+3954	IRAS 16413+3954A	RGB J1642+398	[DGT2001] J1641+399
3C 345	IRAS F16413+3954	RORF 1641+399	[DML87] 420
3C 345.0	IVS B1641+399	RX J164258+39485	[GW2008] CoNFIG 259
4C 39.48	JCMTSE J164258.7+394835	RX J1642.9+3948	[HB93] 1641+399A
6C 164118+395414	JCMTSF J164258.7+394835	RX J164258.8+394837	[KB2007] J164258.8+394836.9
7C 164117.60+395412.00	JVAS B1641+399	1RXS J164258.9+394822	[MGL2009] BZQ J1642+3948
CGRaBS J1642+3948	JVAS J1642+3948	S4 1641+399	[MML2015] 5BZQ J1642+3948
CJF B1641+399	JVAS J1642+398	S4 1641+39	[P82] 1641+399
CLASS J164258.8070+394836.993	1Jy 1641+399	SDSS J164258.81+394836.9	[PD95] 9
3CR 345	1Jy 1641+39	SDSS J164258.80+394837.0	[PGB2011] J1642+3948
CRATES J164258+394842	LEDA 84767	SDSS J164258.80+394836.9	[S77] 338
CTA 74	LHE 413	SWIFT J1643.1+3951	[SRC2012b] J1642+3948
DA 420	MASIV J1642+3948	TGSSADR J164258.7+394837	[SRM2005] J164258.80+394836.9
2E 3752	2MASS J16425879+3948369	TIC 57191769	[VV2000] J164258.8+394837
2E 1641.2+3954	2MASSI J1642587+394837	TXS 1641+399	[VV2003] J164258.8+394837
EF B1641+3954	MITG J1642+3948	UT 1641+399	[VV2006] J164258.8+394837
EGR J1642+3940	MITG J164259+3948	VCS1 J1642+3948	[VV2010] J164258.8+394837
1ES 1641+39.9	MY 164118.4+394836.7	VLSSr J164259.1+394837	[VV96] J164258.8+394837
F2M J164258.80+394837.2	NEWPS5 J1642+3948	VLSS J1642.9+3948	[VV98] J164258.8+394837
FBQS J1642+3948	NRAO 513	VSOP J1642+3948	[VYP98] 1641+399
FBS B 141	NVSS J164258+394837	WB 1641+3954	[WCO2009] J164256+394844
FBS 1641+399	OHIO S 368	1WGA J1642.9+3948	[WTW94] 1641+399A
0FGL J1641.4+3939	PBC J1643.0+3951	WISEA J164258.81+394836.9	[ZEH2003] RX J1642.9+3948 1
1FGL J1642.5+3947	PCCS1 030 G063.46+40.96	WISE J164258.82+394837.0	AAVSO 1639+40
2FGL J1642.9+3949	PCCS2 143 G063.45+40.94	WISE J164258.81+394836.9	Gaia DR3 1355746700891999360
3FGL J1642.9+3950	PKS 1641+399	WMAP 35	Gaia DR1 1355746696601015040
4FGL J1642.9+3948	PSCz Q16413+3954	WMAP J1642+3948	Gaia DR2 1355746700891999360
3FHL J1642.9+3948	QSO J1642+3948	WN B1641.2+3954
FIRST J164258.7+394837	QSO B1641+399	9Y-MST J1642+3949
GB6 J1642+3948	QSO B1641+399A	[A97] J164258.8+394837

References (1724 between 1850 and 2024) (Total 1724) 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 345

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