g Cephei


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 g Cep, NSV 14656, 35 Cep, HR 8974, HD 222404, SAO 10818, FK5: 893
constellation Cepheus

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

note (category: star names): Alrai; Arrai; Errai; Er Rai.

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

position, motion, parallax:

position (J2000) RA: 23h 39min 20,8sec DEC: +77 37' 57''
position (J1900) RA: 23h 35min 14,3sec DEC: +77 4' 27''
proper motion (J2000) RA: -0,067 arcsec/a DEC: 0,151 arcsec/a
radial velocity -42 km/s
note: suspected variable radial velocity
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax 0,064 arcsec

magnitude

visual magnitude 3,21
(V on UBV Johnson system)

spectral / color information

spectral class K1III-IV
B-V-magnitude 1,03
U-B-magnitude 0,94
R-I-magnitude 0,51

variability information

variable star identification 14656

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

position, motion, parallax:

position (J2000) RA: 23h 39min 20,824sec DEC: +77 37' 56,8'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,021 arcsec/a DEC: 0,151 arcsec/a source: 25
radial velocity -42 km/s source: 25
trigonometric parallax 0,064 0,006 arcsec source: 25
galactic coord. (B1950) longitude: 119 latitude: 15,31
GCI unit vector (J2000) X: 0,213313 Y: -0,019275 Z: 0,976794

magnitude:

visual 3,21 (observed) source: 25
photovisual 3,4 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K1III-IVCN1 source: 25
B-magnitude 4,24 0,05 B-V-magnitude 1,03
U-magnitude 5,18 0,05 U-B-magnitude 0,94

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: 23h 37min 16,533sec DEC: +77 21' 11,73'' 0,003 arcsec
position (J2000) RA: 23h 39min 20,864sec DEC: +77 37' 56,56''
proper motion J1950 (FK4) RA: -0,0198 arcsec/a DEC: 0,156 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0205 arcsec/a DEC: 0,149 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 K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 893
Durchmusterung BD+76 928
Boss General Catalogue 32875
Henry Draper Catalogue 222404

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

position:

position (J1950) RA: 23h 37min 16,5sec DEC: +77 21' 12''

variability informations:

magnitute at max. brightness 3,18
magnitute at min. brightness 3,24
photometric system visual, photovisual or Johnson's V

spectral information

spectral class K1

references

to a study 0225D (designation: 722)

miscanellous

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