Mebsuta


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0

  5. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names Mebsuta, e Gem, NSV 03183, 27 Gem, HR 2473, HD 48329, SAO 78682, FK5: 254, WDS 06439+2508A
other names Melucta, Meboula
constellation Gemini

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

note (category: star names): Mebsuta; Melucta; Meboula.

object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 6h 43min 55,9sec DEC: +25 7' 52''
position (J1900) RA: 6h 37min 46,7sec DEC: +25 13' 49''
proper motion (J2000) RA: -0,006 arcsec/a DEC: -0,013 arcsec/a
radial velocity 10 km/s
note: spectroscopic binaries
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax 0,017 arcsec

magnitude

visual magnitude 2,98
(V on UBV Johnson system)

spectral / color information

spectral class G8Ib
B-V-magnitude 1,4
U-B-magnitude 1,46
R-I-magnitude 0,61
note (category: spectra): Strong He 10830 emission and absorption.

variability information

variable star identification 3183

double/multiple star system information

separation 110,3 arcsec
mag difference (of double or brightest multiple) 6
note (category: double and multiple data): Companion 9.22V, +1.13(B-V), +0.91(U-B), K0III-IV.

miscellaneous information

note (category: group membership): Red star Pleiades group.
note (category: stellar radii or diameters): Occultation diam. = 0.0018 - 0.0056".

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000) RA: 6h 43min 55,923sec DEC: +25 7' 51,91'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0004 arcsec/a DEC: -0,013 arcsec/a source: 25
radial velocity 10 km/s source: 25
trigonometric parallax 0,017 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 189,54 latitude: 9,63
GCI unit vector (J2000) X: -0,172483 Y: 0,888756 Z: 0,424691

magnitude:

visual 2,98 (observed) source: 25
photovisual 3,2 source: 2

spectral information:

spectral class G5 source: 96
Morgan-Keenan G8Ib source: 25
B-magnitude 4,38 0,05 B-V-magnitude 1,4
U-magnitude 5,84 0,05 U-B-magnitude 1,46

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 110,3 arcsec
magnitude difference between brightest and second brightest component 6,24
position angle 94

component magnitude spectral class catalogue(s)/name(s)
A 2,98 G5 Mebsuta, e Geminorum, 27 Gem, HR 2473, HD 48329, SAO 78682
B 9,35 K2

sources:

2 HD and HDE Catalogs
Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University
15 FK5, FK5 Extension and FK5 Supplement
Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991
19 WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
25 Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
96 SAO or HD/HDE Catalog
Reference from Value 1 or Reference from Value 2

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (J1950) RA: 6h 40min 51,363sec DEC: +25 10' 56,92'' 0,003 arcsec
position (J2000) RA: 6h 43min 55,922sec DEC: +25 7' 51,89''
proper motion J1950 (FK4) RA: -0,0003 arcsec/a DEC: -0,015 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0004 arcsec/a DEC: -0,014 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,2 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class G5
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 254
Durchmusterung BD+25 1406
Boss General Catalogue 8786
Henry Draper Catalogue 48329

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000) RA: 6h 43,9min DEC: +25 8'
proper motion (J2000) RA: -0,006 arcsec/a DEC: -0,013 arcsec/a

double/multiple star system information:

component year number of measures position angle angular separation magnitude of 1st component magnitude of 2nd component spectral class(es) discoverer code
- 1825 8 94 110,3'' 2,98 9,22 G8I S 533

discoverer information:

discoverer code discoverer reference
S 533 South, J. -

notes:

note Epsilon Gem. B is BD+25@1407. Proper motion of B -006 -010.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 6h 40min 51,4sec DEC: +25 10' 57''

variability informations:

magnitute at max. brightness 2,97
magnitute at min. brightness 3,09
photometric system visual, photovisual or Johnson's V

spectral information

spectral class G8

references

to a study 1795D (designation: EPSIL.GEM)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).