b Muscae


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 b Mus, HR 4844, HD 110879, SAO 252019, WDS 12463-6806
constellation Musca

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


position, motion, parallax:

position (J2000) RA: 12h 46min 16,9sec DEC: -68 6' 29''
position (J1900) RA: 12h 40min 8,7sec DEC: -67 33' 38''
proper motion (J2000) RA: -0,039 arcsec/a DEC: -0,017 arcsec/a
radial velocity 42 km/s
note: variable radial velocity
rotational velocity 184 km/s (uncertain) (variable)
dynamical parallax 0,015 arcsec

magnitude

visual magnitude 3,05
(V on UBV Johnson system)

spectral / color information

spectral class B2.5V
B-V-magnitude -0,18
U-B-magnitude -0,74
R-I-magnitude -0,21

double/multiple star system information

separation 1,3 arcsec
mag difference (of double or brightest multiple) 0,2
note Worley (1978) update of the IDS
note (category: double and multiple data): 3.7 B2V, 4.0 B3V, 383.12y, a = 1.735". Combined mag., colors.

miscellaneous information

note (category: group membership): Sco-Cen assoc.

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

position, motion, parallax:

position (J2000) RA: 12h 46min 16,833sec DEC: -68 6' 28,67'' 0,19 arcsec source: 16
proper motion (J2000) RA: -0,0064 arcsec/a DEC: -0,011 arcsec/a source: 25
radial velocity 42 km/s source: 25
galactic coord. (B1950) longitude: 302,45 latitude: -5,24
GCI unit vector (J2000) X: -0,365282 Y: -0,074783 Z: -0,927888

magnitude:

visual 3,05 (observed) source: 25
photovisual 3,3 source: 2
photographic 3,1 source: 2

spectral information:

spectral class B3 source: 96
Morgan-Keenan B2.5V source: 25
B-magnitude 2,87 0,05 B-V-magnitude -0,18
U-magnitude 2,13 0,05 U-B-magnitude -0,74

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 1,2 arcsec
magnitude difference between brightest and second brightest component 0,3
position angle 35

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: 12h 43min 11,492sec DEC: -67 50' 5,16'' 0,022 arcsec
position (J2000) RA: 12h 46min 16,897sec DEC: -68 6' 29,47''
proper motion J1950 (FK4) RA: -0,0056 arcsec/a DEC: -0,024 arcsec/a 0,004 arcsec/a in RA
0,004 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,007 arcsec/a DEC: -0,017 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,3 (accuracy: 2 decimals)
source of visual magnitude data Combined magnitude of component stars.

spectral information:

spectral class B3
source of spectral data Taken from the HD with M stars reclassified by Miss Cannon.

remarks for duplicity and variability

Double star - see source catalog for source

catalogues

source catalogue FK3, catalogue number: 480
Durchmusterung CP-67 2064
Boss General Catalogue 17348
Henry Draper Catalogue 110879

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

position and proper motion:

position (J2000) RA: 12h 46,3min DEC: -68 6'
proper motion (J2000) RA: -0,036 arcsec/a DEC: -0,011 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
- 1880 70 317 0,6'' 3,6 3,9 B2.5V R 207
1991 35 1,2''

discoverer information:

discoverer code discoverer reference
R 207 Russell, H.C. -

notes:

note Beta Mus. P = 383yr., a = 1.74", motion direct. A has variable radial velocity.