EV Lac

Basic data :
V* EV Lac -- Eruptive Variable 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: * (2015ApJS,BD,...), PM* (2013MNRAS,Ci,...), X (2009ApJ,RE,...), ** (**,CCDM,...), UV (2EUVE,EUVE,...), Er* (2017ARep,[GKL99]), V* (V*), Rad ([CGL99]), NIR (2MASS), MIR (WISEA), IR (IRAS) 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) : 22 46 49.7312610268 +44 20 02.374381562 (Optical) [ 0.0141 0.0160 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) : 22 44 39.9330829804 +44 04 35.362299971 [ 0.0141 0.0160 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) : 100.6067176270883 -13.0693645782006 [ 0.0141 0.0160 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 : -706.216 -458.920 [0.018 0.020 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) 0.287 [0.0017] / z(spectroscopic) 0.000001 [0.000000] / cz 0.29 [0.00]    (Opt) A 2018A&A...616A...7S 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): 197.9573 [0.0220] 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: M4.0Ve C 2013AJ....145..102L 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 (7) : B 11.85 [0.09] D 2012yCat.1322....0Z V 10.26 [0.06] D 2012yCat.1322....0Z R 9.89 [0.02] D 2012yCat.1322....0Z G 9.005235 [0.002809] C 2020yCat.1350....0G J 6.106 [0.030] C 2003yCat.2246....0C H 5.554 [0.031] C 2003yCat.2246....0C K 5.299 [0.024] 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!).
Some important notes on this object about identifications and objects associations. notes: Two candidate companions identified in 2010PASP.122.1195T Improperly named GJ 873 A in some references : please use GJ 873.

BD+43 4305	HIC 112460	PM J22468+4420	USNO-B1.0 1343-00505631
** HER 5A	HIP 112460	PPM 63398	V* EV Lac
AG+44 2119	IDS 22426+4349 A	2RE J224651+442011	VVO 299
AP J22464980+4420030	IRAS 22446+4404	2RE J2246+442	WDS J22468+4420A
ASCC 447839	JP11 175	RE J224651+442019	WEB 20058
CCDM J22468+4420A	Karmn J22468+443	RE J2246+442	WISEA J224649.04+441957.3
Ci 20 1382	LFT 1737	RE J224647+441955	Zkh 337
CSI+43 4305 1	LHS 3853	RX J2246.8+4420	[CGL99] 25
2EUVE J2246+44.3	LSPM J2246+4420	1RXS J224650.7+442008	[FS2003] 1177
EUVE J2246+44.3	LTT 16695	TIC 154101678	[GKL99] 435
GAT 1203	2MASS J22464980+4420030	TYC 3226-2288-1	[RHG95] 3584
GCRV 14312	MCC 852	UBV 19534	Gaia DR3 1934263333784036736
GEN# +0.04304305A	NLTT 54837	UBV 19530	Gaia DR2 1934263333784036736
G 216-16	8pc 198.00	UCAC2 46990456
GJ 873	PLX 5520	UCAC4 672-113378

References (900 between 1850 and 2024) (Total 900) 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 : EV Lac

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