V* SS Cyg

Basic data :
V* SS Cyg -- Cataclysmic Binary 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: * (HD,ALS,...), X (3A,1E,...), UV (2012ApJS,2EUVE,...), CV* (2012A&A), SB* (SBC7,SBC9), Em* (EM*,[KW97]), PM* (2018yCat,PM), V* (V*,AAVSO), MIR (WISEA,WISE), gam (INTEGRAL1), NIR (2MASS), Opt (LAMOST) 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) : 21 42 42.8034497592 +43 35 09.867842484 (Optical) [ 0.0222 0.0261 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) : 21 40 44.4465064618 +43 21 23.058719685 [ 0.0222 0.0261 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) : 090.5591672446973 -07.1105886659917 [ 0.0222 0.0261 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 : 112.385 33.315 [0.029 0.033 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) -62.0 [10] / z(~) -0.000207 [0.000033] / cz -61.99 [10.00]    E 1953GCRV..C......0W 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): 8.8541 [0.0304] A 2020yCat.1350....0G Spectral type is made of 3 parts: %coding is composed of 4 parts : the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities; a quality letter: A=best quality→E=worst quality, {� } =unknown quality % a quality letter: A=best quality -> E=worst quality, {� } =unknown quality bibcode : bibcode of the spectral type reference Spectral type: K5V C 2002MNRAS.337.1215N 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 (11) : U 11.07 [~] D 2003AJ....125.2531R B 12.651 [0.18] D 2012yCat.1322....0Z V 12.032 [0.15] D 2012yCat.1322....0Z R 9.326 [0.61] E 2012yCat.1322....0Z G 11.6889 [0.0137] C 2018yCat.1345....0G J 10.03 [~] C 2002yCat.2237....0D H 9.63 [~] C 2002yCat.2237....0D K 9.39 [~] C 2002yCat.2237....0D g 12.354 [0.18] D 2012yCat.1322....0Z r 11.708 [0.14] D 2012yCat.1322....0Z i 11.331 [0.13] D 2012yCat.1322....0Z	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: Not HIP 107156

HD 206697	1H 2140+433	1RXS J214242.6+433506	WEB 19362
3A 2140+433	INTEGRAL1 121	SBC7 872	WISEA J214242.90+433510.3
ALS 11959	KPD 2140+4321	SBC9 1326	WISE J214242.91+433510.2
BD+42 4189a	LAMOST J214242.80+433509.8	SV* HV 84	[BM83] X2140+433
CSI+42 4189 1	LS III +43 24	SWIFT J2142.7+4337	[FS2003] 1134
1E 2140.7+4321	2MASS J21424280+4335098	SWIFT J2142.6+4334	[KRL2007b] 389
2E 4511	PBC J2142.7+4334	TIC 190696047	[KW97] 59-12
2E 2140.7+4321	PLX 5240	TYC 3196-723-1	[SPB96] 2200
EM* CDS 1268	PLX 5240.00	UBV M 50941	AAVSO 2138+43
2EUVE J2142+43.6	PM J21427+4335	UCAC2 46852538	Gaia DR3 1972957892448494592
EUVE J2142+43.6	2RE J2142+433	UCAC4 668-104538	Gaia DR1 1972957892448494592
GCRV 13641	RE J2142+433	USNO 568	Gaia DR2 1972957892448494592
GEN# +1.00206697	RE J214241+433511	V* SS Cyg

References (1290 between 1850 and 2024) (Total 1290) 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 : V* SS Cyg

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