MR 112

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Basic data :
MR 112 -- Wolf-Rayet Star 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: * (ALS,GSC,...), Em* (EM*,HBHA,...), WR* (WR,MR,...), IR (IRAS,2MASS,...), ** (**,WDS), Rad ([TGC96]) 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 35 47.0859278605 +41 22 44.703520146 (Optical) [ 0.2869 0.3784 90 ] A 2018yCat.1345....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 33 59.0986198774 +41 12 18.051106124 [ 0.2869 0.3784 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) : 080.5604983046286 +00.4450925602970 [ 0.2869 0.3784 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 : -2.916 -3.875 [0.628 0.786 90] A 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): 0.8345 [0.3676] A 2018yCat.1345....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: WC5-6e+O8 C 2009yCat....1.2023S 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) : V 12.64 [0.27] E 2008AJ....136..735L R 12.16 [0.34] E 2009yCat.1315....0Z G 11.0537 [0.0008] C 2018yCat.1345....0G J 7.069 [0.026] C 2003yCat.2246....0C H 6.240 [0.021] C 2003yCat.2246....0C K 5.490 [0.018] C 2003yCat.2246....0C u (AB) 16.319 [0.010] C 2012ApJS..203...21A g (AB) 15.460 [0.006] C 2012ApJS..203...21A r (AB) 14.554 [0.011] C 2012ApJS..203...21A i (AB) 14.750 [0.012] C 2012ApJS..203...21A z (AB) 9.589 [0.001] C 2012ApJS..203...21A	SIMBAD with radius arcmin Interactive AladinLite view 2MASS DSS SDSSXMMIRACIRISGALEX VizieR photometry viewer    within radius 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!).

WR 146	HBHA 4203-51	PPMX J203547.0+412244	[HM60] 3
** NML 1	IRAS 20339+4112	RLP 1166	[KW97] 48-8
ALS 19606	JP11 166	S1* 654	[TGC96] 2033+4112
CSS 1229	2MASS J20354707+4122445	SDSS J203547.08+412244.6	Gaia DR2 2067867358199590400
EM* CDS 1176	MR 112	UCAC3 263-197356
GSC 03161-01125	MSX6C G080.5602+00.4449	WDS J20358+4123AB

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References (144 between 1850 and 2021) (Total 144) 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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External archives :

Data at NED - NASA/IPAC Extragalactic Database : MR 112

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• It is not an S-type star.

  Binarity :

  Niemela et al UBV data and Lepine spectral types:

  V    B-V   U-B   MK
  A:  13.64  2.70  0.83  WC6
  B:  13.88  2.44  0.60  O8I-IIf
  combined V = 13.00, B = 15.58
  

  RA  (J2000)  Dec
  A:  20 35 47.07 +41 22 44.5
  B:  20 35 47.08 +41 22 44.7
  

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