4C 39.49

Basic data :
4C 39.49 -- 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 (2010AJ,7C,...), gam (2010RMxAC,ARGO,...), X (2009A&A,3A,...), BLL (2010ApJ,[VV2000b],...), G (2012A&A,LEDA,...), Bla (2012ApJ,[DGT2001],...), QSO (2016A&A,QSO,...), AGN (2011ApJ,CGRaBS), Bz? (2019A&A,3HSP,...), smm (JCMTSE,JCMTSF), UV (2EUVE,EUVE), MIR (WISEA,WISE), GiC ([RGD2002]), * (Gaia), NIR (2MASS), IR (IRAS), 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 53 52.21668403 +39 45 36.6088754 (Radio) [ 0.0328631 0.0348 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 52 11.73832324 +39 50 25.2306330 [ 0.0328631 0.0348 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) : 063.60003966588 +38.85915565445 [ 0.0328631 0.0348 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 : 0.811 -0.416 [0.047 0.051 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) 9730 [~] / z(spectroscopic) 0.033 [~] / cz 9893 [~]    D 2011NewA...16..503M 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): 0.0549 [0.0437] 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: -4.9 D 2001ApJ...560..566K 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): 0.743 0.654 160 (NIR) C 2006AJ....131.1163S 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 (13) : U 14.09 [0.14] D 2007ApJS..173..185G B 14.15 [0.13] D 2007ApJS..173..185G V 13.29 [0.13] D 2007ApJS..173..185G R 8.26 [~] D 2008ApJS..175...97H G 14.475332 [0.006792] C 2020yCat.1350....0G J 10.669 [0.020] C 2006AJ....131.1163S H 9.874 [0.024] C 2006AJ....131.1163S K 9.573 [0.027] C 2006AJ....131.1163S u (AB) 15.345 [0.006] C 2009ApJS..182..543A g (AB) 13.841 [0.002] C 2009ApJS..182..543A r (AB) 13.032 [0.002] C 2009ApJS..182..543A i (AB) 12.621 [0.002] C 2009ApJS..182..543A z (AB) 12.330 [0.002] C 2009ApJS..182..543A	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 GALEX UV data in GALEX data See also Specfind radio flux densities.

7C 165211.80+395026.00	GB6 J1653+3945	PKS 1652+398	WISE J165352.22+394536.5
3A 1653+398	87GB 165211.6+395018	QSO J1653+3945	WMAP J1653+3949
Anon 1652+39	1H 1651+398	QSO B1652+398	WMAP J1654+3941
ARGO J1654+3945	1H 1652+398	QSO B1652+39	WMAP J1654+3939
B2.3 1652+39 A	H 1652+398	RBS 1610	WMAP 36
B2 1652+39 A	H 1649+39	RGB J1653.9+3945	WN B1652.1+3950B
B3 1652+398	3HSP J165352.2+394536	RGB J1653+397	WN B1652.1+3950
BWE 1652+3950	2HWC J1653+397	RORF 1652+398	2XMM J165352.1+394535
4C 39.49	3HWC J1654+397	RX J1653.9+3945	XSS J16536+3951
6C 165212+395036	ICRF J165352.2+394536	RX J1653.8+3945	9Y-MST J1653+3945
CGRaBS J1653+3945	IERS B1652+398	1RXS J165352.6+394538	Z 1652.2+3950
CJ1 1652+398	INTREF 725	S4 1652+398	Z 225-7
CJF B1652+398	IRAS Z16522+3950	S4 1652+39	[BDW2002] q1652+3950
CLASS J165352.2188+394536.612	JCMTSE J165352.0+394539	SDSS J165352.22+394536.5	[DGT2001] B1652+398
CLASS J165351.7794+394531.489	JCMTSF J165352.0+394539	SWIFT J1654.0+3946	[GW2008] CoNFIG 263
DA 426	JVAS B1652+398	SWIFT J1654.1+3945	[HB93] 1652+398
2E 1652.1+3950	JVAS J1653+397	TeV J1653+397	[IN88] 1652+398
2E 3780	JVAS J1653+3945	TeV J1653+3945	[KRL2007b] 207
EF B1652+3950	1Jy 1652+39	TIC 72806854	[MGL2009] BZB J1653+3945
1ES 1652+39.8	1Jy 1652+398	TXS 1652+398	[MLO2002] B2 1652+39 J165352.4+394535
2EUVE J1653+39.7	LEDA 59214	4U 1651+39	[MML2015] 5BZB J1653+3945
EUVE J1653+39.7	MaNGA 8612-1901	UGC 10599	[RGD2002] J165352.20+394536.1
0FGL J1653.9+3946	MaNGA 1-594755	UT 1652+398	[VV2000b] J165352.2+394536
1FGL J1653.9+3945	2MASS J16535222+3945365	UZC J165352.3+394537	[VV2003b] J165352.2+394536
2FGL J1653.9+3945	2MASX J16535220+3945369	VER J1653+397	[VV2006b] J165352.2+394536
3FGL J1653.9+3945	2MAXI J1653+398	VIPS J16538+3945	[VV2010b] J165352.2+394536
4FGL J1653.8+3945	MCG+07-35-002	VLSS J1653.8+3945	[VV98b] J165352.2+394536
1FHL J1653.9+3945	MITG J165351+3945	VSOP J1653+3945	[VYP98] 1652+398
2FHL J1653.9+3945	Mrk 501	WB 1652+3950	[ZEH2003] RX J1653.8+3945 1
3FHL J1653.8+3945	NVSS J165352+394536	2WHSP J165352.2+394535	Gaia DR2 1352838630075616384
FIRST J165352.2+394536	OHIO S 387	WISEA J165352.22+394536.6	Gaia DR1 1352838625783347968
GB6 B1652+3950	PBC J1653.8+3945	WISE J165352.22+394536.6	Gaia DR3 1352838630075616384

References (2085 between 1850 and 2023) (Total 2085) 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 : 4C 39.49

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