s Cassiopeiae


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


catalogues and names s Cas, 8 Cas, HR 9071, HD 224572, SAO 35947, WDS 23590+5545A
constellation Cassiopeia

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


position, motion, parallax:

position (J2000) RA: 23h 59min 0,5sec DEC: +55 45' 18''
position (J1900) RA: 23h 53min 56sec DEC: +55 11' 54''
proper motion (J2000) RA: 0,009 arcsec/a DEC: -0,004 arcsec/a
radial velocity -13 km/s
note: spectroscopic binaries, double lined spectra
rotational velocity 189 km/s (uncertain) (variable)
dynamical parallax 0,006 arcsec

magnitude

visual magnitude 4,88
(V on UBV Johnson system)

spectral / color information

spectral class B1V
B-V-magnitude -0,07
U-B-magnitude -0,82
R-I-magnitude -0,11
note (category: spectra): Combined spectrum.

double/multiple star system information

number of components of multiple star system 3
separation 2,8 arcsec
mag difference (of double or brightest multiple) 2,2
component ID AB
note (category: double and multiple data): AB binary, 5.0v B2III, 7.1v B3V.
note (category: spectroscopic binaries): ADS 17140B.

miscellaneous information

note (category: group membership): Probable foreground star of a sparse group with HR 9045, 9052 and several fainter stars.

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

position, motion, parallax:

position (J2000) RA: 23h 59min 0,596sec DEC: +55 45' 18,49'' 0,43 arcsec source: 16
proper motion (J2000) RA: 0,0021 arcsec/a DEC: 0,002 arcsec/a source: 25
radial velocity -13 km/s source: 25
galactic coord. (B1950) longitude: 115,56 latitude: -6,36
GCI unit vector (J2000) X: 0,562726 Y: -0,002431 Z: 0,82664

magnitude:

visual 4,88 (observed) source: 25
photovisual 4,9 source: 2
photographic 4,7 source: 16

spectral information:

spectral class B2 source: 96
Morgan-Keenan B1V source: 25
B-magnitude 4,81 0,05 B-V-magnitude -0,07
U-magnitude 3,99 0,05 U-B-magnitude -0,82

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 3,1 arcsec
magnitude difference between brightest and second brightest component 2
position angle 327

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
16 PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
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: 23h 56min 27,677sec DEC: +55 28' 35,99'' 0,013 arcsec
position (J2000) RA: 23h 59min 0,532sec DEC: +55 45' 17,72''
proper motion J1950 (FK4) RA: 0,0009 arcsec/a DEC: 0,001 arcsec/a 0,002 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0011 arcsec/a DEC: -0,004 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,9 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class B2
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue GC, catalogue number: 33257
Durchmusterung BD+54 3082
Boss General Catalogue 33257
Henry Draper Catalogue 224572

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

position and proper motion:

position (J2000) RA: 23h 59min DEC: +55 45'
proper motion (J2000) RA: 0,014 arcsec/a DEC: -0,004 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
AB 1830 67 324 3,1'' 5 7 B1V STF3049
1983 327 -
AC 1879 2 67 109,9'' 4,9 - - STF3049

discoverer information:

discoverer code discoverer reference
STF3049 Struve, F.G.W. -

notes:

note Sigma Cas. B is a spectroscopic binary.