QSO B1202-074

Basic data :
QSO B1202-074 -- 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: QSO (2010A&A,QSO,...), MIR (WISEA,WISE), G ([LSW96]), * (Gaia), smm ([IYE2006]), NIR (2MASS), IR (2MASSI), Opt (PSO) 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) : 12 05 23.1360370080 -07 42 32.759842896 (Optical) [ 0.2222 0.1547 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) : 12 02 49.2232437827 -07 25 50.664209845 [ 0.2222 0.1547 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) : 283.5481609774726 +53.4205747675602 [ 0.2222 0.1547 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 : -0.256 0.227 [0.329 0.212 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) 281828 [~] / z(emission) 4.69 [~] / cz 1406027 [~]    D 2015ApJ...806..109J 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 (9) : V 17.5 [~] E ~ G 18.903831 [0.005071] C 2020yCat.1350....0G J 16.759 [0.149] D 2003yCat.2246....0C H 15.781 [0.130] D 2003yCat.2246....0C K 15.544 [0.199] D 2003yCat.2246....0C g (AB) 21.0510 [0.0473] C 2017yCat.2349....0C r (AB) 19.1563 [0.0041] B 2017yCat.2349....0C i (AB) 17.9567 [0.0173] C 2017yCat.2349....0C z (AB) 17.9149 [0.0152] C 2017yCat.2349....0C	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: the star-forming galaxy at 2".3 NW of the quasar BR 1202-0725 is BR 1202-0725e. there is a second CO emitter, 4" NW of the quasar, cf. 2004AJ....128.2704O northern source in BR B1202-0725 DLA system in the spectrum of QSO J1205-0742

QSO B1202-074	2MASS J12052311-0742323	WISEA J120523.13-074232.8	[VV2003] J120523.1-074232
BR B1202-07	2MASSI J1205231-074232	WISE J120523.13-074232.6	[VV2006] J120523.1-074232
BR B1202-0725	PSO J181.3464-07.7091	[IYE2006] BR 1202S	[VV2010] J120523.1-074232
BR B1202-0727	QSO B1202-07	[LSB98] 1202-0725	[VV96] J120523.1-074232
BR B1202-0725e	QSO B1202-0725	[LSW96] Galaxy	[VV98] J120523.1-074232
BR B1202-0725B	QSO J1205-0742	[PW97] 1202-0725	Gaia DR3 3594542414460857984
BRI B1202-0725	TIC 152805879	[VV2000] J120523.1-074232

References (368 between 1850 and 2023) (Total 368) 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 :

Data at NED - NASA/IPAC Extragalactic Database : QSO B1202-074

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• the star-forming galaxy at 2".3 northwest of the quasar BR 1202-0725 is BR 1202-0725e. redshifted CO emission is detected at another location near the quasar (4 NW of the quasar), about 2" away from the NW companion, which we call the second CO emitter, cf. 2004AJ....128.2704O

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