BD+40 4227A

Basic data :
BD+40 4227A -- Spectroscopic 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: * (BD,AG,...), X (CXOCyg,1E,...), ** (**,ADS,...), SB* (2014ApJS), Em* (EM*), V* (2012ApJ), UV ([R2011]), 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) : 20 33 15.0781182864 +41 18 50.479292556 (Optical) [ 0.0145 0.0178 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) : 20 31 27.3884184405 +41 08 32.509802194 [ 0.0145 0.0178 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) : 080.2240060540373 +00.7872981222011 [ 0.0145 0.0178 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 : -2.664 -4.106 [0.018 0.019 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) 125.56 [17.85] / z(spectroscopic) 0.000419 [0.000060] / cz 125.59 [17.85]    (Opt) E 2018yCat.1345....0G 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): 0.6058 [0.0191] 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: O6Ib(fc)+O4.5:III:(fc) C 2014ApJS..211...10S 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) : U 10.42 [~] C 2002yCat.2237....0D B 10.27 [~] C 2002yCat.2237....0D V 8.98 [~] C 2002yCat.2237....0D R 8.03 [~] C 2002yCat.2237....0D G 8.429846 [0.002788] C 2020yCat.1350....0G I 6.83 [~] C 2002yCat.2237....0D J 6.123 [0.020] C 2003yCat.2246....0C H 5.721 [0.017] C 2003yCat.2246....0C K 5.503 [0.017] 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!).

BD+40 4227	2E 2031.4+4108	NAME VI Cyg 8	[AFM2007] 568
** HJ 1539A	EM* CDS 1173	NAME VI Cyg 8A	[HFE83] 1374
** ARN 77A	1ES 2031+41.1	NAME Cyg OB2 8A	[HJ56] 220
** HER 4	GCRV 20036	PPM 60129	[MHG2003] h
ADS 14000 A	GEN# +9.00030008	1RXS J203315.8+411848	[MM53] Cyg OB2 8A
AG+41 1925	GOS G080.22+00.79 01	SAO 49781	[MT91] 465
ALS 11423	GSC 03161-01325	Schulte 8A	[R2011] IDX 96
BD+40 4227A	HIC 101425	TIC 17450216	[R2011] IDOM 126
CCDM J20332+4119A	Hilt 996	TYC 3161-1325-1	[SKV93] 3-52
CGO 605	HIP 101425	UBV 17839	Gaia DR3 2067784624247057920
CSI+40 4227 1	IDS 20297+4058 A	UCAC3 263-196673	Gaia DR2 2067784624247057920
CXOCyg J203315.07+411850.3	LS III +41 37	WDS J20333+4119A
1E 203127+4108.5	2MASS J20331508+4118504	2XMM J203315.0+411850
2E 4382	NAME Cyg OB2 8	3XMM J203315.0+411850

References (242 between 1850 and 2023) (Total 242) 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

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