DH Cep

Basic data :
HD 215835 -- 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: * (HD,AG,...), X (1E,1RXS,...), SB* (2019A&A,SBC7,...), ** (CCDM,IDS,...), V* (2016MNRAS,V*), EB* (2022ApJS), El* (2003AstL), UV (TD1), 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) : 22 46 54.1107754872 +58 05 03.533752788 (Optical) [ 0.0116 0.0119 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 54.2579573484 +57 49 13.561042362 [ 0.0116 0.0119 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) : 107.0665247225634 -00.8988382500173 [ 0.0116 0.0119 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 : -2.599 -2.236 [0.014 0.014 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) -35.4 [2] / z(~) -0.000118 [0.000007] / cz -35.40 [2.00]    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): 0.3397 [0.0138] 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: O5.5V((f))+O6V((f)) 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 (8) : U 8.24 [~] D 2003AJ....125.2531R B 8.85 [~] E ~ V 8.629 [0.018] D 2016MNRAS.456.2505L G 8.475408 [0.002869] C 2020yCat.1350....0G I 8.049 [~] D 2016MNRAS.456.2505L J 7.741 [0.027] C 2003yCat.2246....0C H 7.718 [0.055] C 2003yCat.2246....0C K 7.682 [0.016] 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!).

HD 215835	GSC 03992-00193	1RXS J224653.9+580458	WEB 20057
AG+57 1605	HIC 112470	SAO 34810	2XMM J224654.0+580503
ALS 12597	Hilt 1157	SBC7 929	3XMM J224654.1+580503
BD+57 2607	HIP 112470	SBC9 1399	YZ 57 13427
CCDM J22469+5805A	IDS 22432+5736 A	TD1 29357	[HJ56] 246
CGO 642	JP11 4443	TIC 343661464	[JHC84] 2
Cl* NGC 7380 MOF 2	LS III +57 76	TYC 3992-193-1	[MJD95] J224654.14+580503.4
CSI+57 2607 1	2MASS J22465410+5805033	UBV 21548	Gaia DR2 2007416556811088768
1E 2244.9+5749	MCW 1077	UBV M 38222	Gaia DR3 2007416556811088768
GCRV 14314	NGC 7380 2	uvby98 273800002	Gaia DR1 2007416552501245696
GEN# +2.73800002	PPM 41083	V* DH Cep
GOS G107.07-00.90 01	ROT 3320	WDS J22469+5805A

References (253 between 1850 and 2024) (Total 253) 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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