LB 1727

Basic data :
LB 1727 -- 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: X (1AXG,1ES,...), QSO (2016ApJ,QSO,...), UV (2EUVE,EUVE,...), MIR (AKARI,WISEA,...), AGN (2012ApJ,[VV98c]), G (2013PASJ,6dFGS), IR (IRAS,MCBB), Sy2 (2013ApJS), Sy1 (2013ApJS), * (Gaia), blu (LB), gam (INTREF), 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) : 04 26 00.7188165240 -57 12 01.769902992 (Optical) [ 0.0180 0.0176 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) : 04 25 02.1934485512 -57 18 43.526801815 [ 0.0180 0.0176 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) : 266.9870413440447 -41.9963856865100 [ 0.0180 0.0176 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 : -0.017 0.026 [0.021 0.023 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) 29565 [~] / z(emission) 0.104 [~] / cz 31178 [~]    (Opt) D 2016ApJ...818..113N 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 (8) : U 13.68 [~] D 2015MNRAS.453.1879K B 14.58 [~] D 2015MNRAS.453.1879K V 14.37 [~] D 2015MNRAS.453.1879K R 14.8 [~] E 2010MNRAS.401.1151M G 14.569447 [0.008487] C 2020yCat.1350....0G J 13.380 [0.026] C 2003yCat.2246....0C H 12.887 [0.028] C 2003yCat.2246....0C K 12.007 [0.025] C 2003yCat.2246....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!).

2MASS J04260071-5712017	IRAS F04250-5718	RE J0425-571	XSS J04273-5749
AKARI-IRC-V1 J0426007-571203	LB 1727	RX J0426.0-5712	[BBW2000] FD 62
1AXG J042556-5711	2MAXI J0424-571	RX J0425.9-5712	[VV2000] J042600.8-571201
6dFGS gJ042600.7-571202	MAXI J0423-569	1RXS J042601.6-571202	[VV2003] J042600.8-571201
EC 04250-5718	MCBB 5-18	SWIFT J0426.2-5711	[VV2006] J042600.8-571201
1ES 0425-57.3	PBC J0425.9-5712	SWIFT J0426.4-5712	[VV2010] J042600.8-571201
2EUVE J0425-57.2	QSO J0426-5712	TIC 293165728	[VV98] J042600.8-571201
EUVE J0426-57.2	RBS 542	WISEA J042600.72-571201.8	[VV98c] J042550.8-571449
FAUST 557	2RE J042537-571348	WISE J042600.71-571201.8	Gaia DR2 4775331664045020160
1H 0419-577	2RE J0425-571	2XMM J042600.7-571201	Gaia DR3 4775331664045020160
INTREF 186	RE J042544-571335	XMMSL1 J042559.7-571142

References (271 between 1850 and 2023) (Total 271) 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 : LB 1727

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