Sterope II

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

catalogues and names Sterope II, 22 Tau, HR 1152, HD 23441, SAO 76164
constellation Taurus

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

note (category: star names): Sterope II.

position, motion, parallax:

position (J2000) RA: 3h 46min 2,9sec DEC: +24° 31' 41''
position (J1900) RA: 3h 40min 5,3sec DEC: +24° 12' 57''
proper motion (J2000) RA: 0,014 arcsec/a DEC: -0,044 arcsec/a
radial velocity 0 km/s
note: variable radial velocity
rotational velocity 236 km/s (uncertain) (variable)

magnitude

visual magnitude 6,43
(V on UBV Johnson system)

spectral / color information

spectral class A0Vn
B-V-magnitude -0,02
U-B-magnitude -0,15
R-I-magnitude -0,02

double/multiple star system information

separation 0,1 arcsec
mag difference (of double or brightest multiple) 0
note doublicity discoverd by occultation
note (category: double and multiple data): Suspected occultation double.

miscellaneous information

note (category: group membership): Pleiades cluster; Mel 22 #859.

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

position, motion, parallax:

position (J2000) RA: 3h 46min 2,869sec DEC: +24° 31' 40,1'' ±0,43 arcsec source: 16
proper motion (J2000) RA: 0,0007 arcsec/a DEC: -0,047 arcsec/a source: 25
radial velocity 0 km/s source: 25
galactic coord. (B1950) longitude: 166,1° latitude: -23,36°
GCI unit vector (J2000) X: 0,501972 Y: 0,758741 Z: 0,415135

magnitude:

visual 6,43 (observed) source: 25
photovisual 6,5 source: 2
photographic 6,4 source: 16

spectral information:

spectral class B9 source: 96
Morgan-Keenan A0Vn source: 25
B-magnitude 6,41 ±0,05 B-V-magnitude -0,02
U-magnitude 6,26 ±0,05 U-B-magnitude -0,15

double/multiple star system information:

source of data: 25
separation between brightest and second brightest component 0,1 arcsec
magnitude difference between brightest and second brightest component 0

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
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: 3h 43min 3,846sec DEC: +24° 22' 24,38'' ±0,028 arcsec
position (J2000) RA: 3h 46min 2,868sec DEC: +24° 31' 40,53''
proper motion J1950 (FK4) RA: 0,0011 arcsec/a DEC: -0,041 arcsec/a ±0,005 arcsec/a in RA
±0,004 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,001 arcsec/a DEC: -0,044 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 6,5 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class B9
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue GC, catalogue number: 4506
Durchmusterung BD+24 556
Boss General Catalogue 4506
Henry Draper Catalogue 23441