Segin


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. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names Segin, e Cas, NSV 00652, 45 Cas, HR 542, HD 11415, SAO 12031, FK5: 63
other names Ruchbah, Segin in Becvar
constellation Cassiopeia

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

note (category: star names): Called Segin in Becvar; Allen gives Ruchbah, a name more commonly applied to HR 403.

position, motion, parallax:

position (J2000) RA: 1h 54min 23,7sec DEC: +63 40' 12''
position (J1900) RA: 1h 47min 11,7sec DEC: +63 10' 40''
proper motion (J2000) RA: 0,032 arcsec/a DEC: -0,021 arcsec/a
radial velocity -8 km/s
note: variable radial velocity
rotational velocity 19 km/s (uncertain) (variable)
trigonometric parallax 0,01 arcsec

magnitude

visual magnitude 3,38
(V on UBV Johnson system)

spectral / color information

spectral class B3III
B-V-magnitude -0,15
U-B-magnitude -0,6
R-I-magnitude -0,12
note (category: spectra): Helium weak. Shell star. Usually classified B3Vp.

variability information

variable star identification 652

miscellaneous information

note (category: group membership): Cas-Tau OB1; member of Pleiades group.

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

position, motion, parallax:

position (J2000) RA: 1h 54min 23,711sec DEC: +63 40' 12,28'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0048 arcsec/a DEC: -0,021 arcsec/a source: 25
radial velocity -8 km/s source: 25
trigonometric parallax 0,01 0,001 arcsec source: 25
galactic coord. (B1950) longitude: 129,85 latitude: 1,65
GCI unit vector (J2000) X: 0,389424 Y: 0,21231 Z: 0,896255

magnitude:

visual 3,38 (observed) source: 25
photovisual 3,4 source: 2

spectral information:

spectral class B3 source: 96
Morgan-Keenan B3IV:p(shell) source: 25
B-magnitude 3,23 0,05 B-V-magnitude -0,15
U-magnitude 2,63 0,05 U-B-magnitude -0,6

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
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: 1h 50min 46,378sec DEC: +63 25' 29,89'' 0,004 arcsec
position (J2000) RA: 1h 54min 23,71sec DEC: +63 40' 12,27''
proper motion J1950 (FK4) RA: 0,0049 arcsec/a DEC: -0,015 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0048 arcsec/a DEC: -0,021 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,4 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class B3
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 63
Durchmusterung BD+62 320
Boss General Catalogue 2289
Henry Draper Catalogue 11415

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

position:

position (J1950) RA: 1h 50min 46,4sec DEC: +63 25' 30''

variability informations:

magnitute at max. brightness 3,35
magnitute at min. brightness 3,38
photometric system visual, photovisual or Johnson's V

spectral information

spectral class BP

references

to a study 1165D (designation: EPSIL.CAS)