4C 40.25

Basic data :
4C 40.25 -- 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 (2010AJ,4C,...), QSO (2010A&A,QSO,...), Bla (2009A&A,[MGL2009],...), gam (1FGL,2FGL,...), Opt (ATO,LAMOST,...), Q? (2021MNRAS,FBQS), * (PB,Gaia), X (2009A&A,RX), MIR (WISEA,WISE), AGN (CGRaBS), AG? (2022ApJS), V* (2018AJ), G (LEDA), 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) : 10 23 11.56566843 +39 48 15.3853581 (Radio) [ 0.043559 0.0571 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) : 10 20 14.56746547 +40 03 26.6776688 [ 0.043559 0.0571 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) : 180.85253804249 +56.87799800536 [ 0.043559 0.0571 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 : -0.060 -0.029 [0.111 0.089 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) 201243 [30] / z(spectroscopic) 1.2548 [0.0001] / cz 376180 [30]    (Opt) C 2014A&A...563A..54P 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): 0.0448 [0.1140] A 2018yCat.1345....0G 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): 0.0000118 0.0000048 -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 (12) : B 17.5 [~] E ~ V 17.5 [~] E ~ R 17.18 [~] D 2008ApJS..175...97H G 17.611849 [0.006295] C 2020yCat.1350....0G J 15.910 [0.073] C 2003yCat.2246....0C H 15.060 [0.089] C 2003yCat.2246....0C K 14.118 [0.049] C 2003yCat.2246....0C u (AB) 18.402 [0.014] C 2020ApJS..249....3A g (AB) 18.297 [0.007] B 2020ApJS..249....3A r (AB) 17.992 [0.006] B 2020ApJS..249....3A i (AB) 17.975 [0.008] B 2020ApJS..249....3A z (AB) 18.057 [0.020] 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.

4C 40.25	FIRST J102311.5+394815	RFC J1023+3948	WK 192
ATO J155.7981+39.8042	GB6 B1020+4003	RGB J1023.2+3948	WN B1020.2+4003
B2 1020+40	87GB 102014.0+400305	RGB J1023+397A	9Y-MST J1023+3949
B2.3 1020+40	ICRF J102311.5+394815	RGB J1023+398B	[HB93] 1020+400
B3 1020+400	IERS B1020+400	RORF 1020+400	[LBC2010] B1020+400
B3VLA 1020+400	IVS B1020+400	RX J1023.2+3948	[MGL2009] BZQ J1023+3948
BWE 1020+4003	JVAS J1023+3948	S4 1020+400	[MML2015] 5BZQ J1023+3948
6C 102014+400331	JVAS B1020+400	S4 1020+40	[VV2000] J102311.5+394817
7C 102014.59+400329.00	JVAS J1023+398	SDSS J102311.56+394815.4	[VV2003] J102311.5+394817
CGRaBS J1023+3948	LAMOST J102311.56+394815.4	TGSSADR J102311.5+394816	[VV2006] J102311.5+394817
CJ1 1020+400	LEDA 2820661	TIC 8173873	[VV2010] J102311.5+394817
CJF B1020+400	2MASS J10231159+3948152	TXS 1020+400	[VV96] J102311.5+394817
CLASS J102311.5661+394815.378	2MASSI J1023115+394815	VIPS J10231+3948	[VV98] J102311.5+394817
CRATES J102310+394759	MY 102014.4+394813.5	VLSSr J102311.0+394825	[ZEH2003] RX J1023.1+3948 1
FBQS J1023+3948	MY 102014.4+400324.8	VLSS J1023.1+3948	Gaia DR3 756029731472171648
1FGL J1023.6+3937	NVSS J102311+394817	WB 1020+4003	Gaia DR1 756029727177261184
2FGL J1023.6+3947	PB 193	WISEA J102311.56+394815.3	Gaia DR2 756029731472171648
3FGL J1023.1+3952	QSO B1020+400	WISE J102311.57+394815.4
4FGL J1023.1+3949	QSO J1023+3948	WISE J102311.56+394815.3

References (160 between 1850 and 2024) (Total 160) 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 40.25

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