n Octantis

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 n Oct, NSV 25707, HR 8254, HD 205478, SAO 257948, FK5: 810
constellation Octans

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

position, motion, parallax:

position (J2000) RA: 21h 41min 28,5sec DEC: -77 23' 24''
position (J1900) RA: 21h 30min 21,7sec DEC: -77 50' 2''
proper motion (J2000) RA: 0,045 arcsec/a DEC: -0,24 arcsec/a
radial velocity 34 km/s
note: spectroscopic binaries
note: orbital data avaible
trigonometric parallax 0,053 arcsec


visual magnitude 3,76
(V on UBV Johnson system)

spectral / color information

spectral class K0III
B-V-magnitude 1
U-B-magnitude 0,89

double/multiple star system information

separation 0,1 arcsec
component ID *
note astrometric binary
note (category: double and multiple data): A* 3.76 K0III, 2.84y, a = 0.052".
note (category: spectroscopic binaries): 1020d, K 8.0k/s, V0 +34.0k/s, asini 103.

miscellaneous information

note (category: group membership): Wolf 630 group.

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

position, motion, parallax:

position (J2000) RA: 21h 41min 28,548sec DEC: -77 23' 24,18'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0137 arcsec/a DEC: -0,24 arcsec/a source: 25
radial velocity 34 km/s source: 25
trigonometric parallax 0,053 0,005 arcsec source: 25
galactic coord. (B1950) longitude: 314,29 latitude: -35,19
GCI unit vector (J2000) X: 0,179634 Y: -0,124065 Z: -0,975879


visual 3,76 (observed) source: 25
photovisual 3,7 source: 2
photographic 4,7 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K0III source: 25
B-magnitude 4,76 0,05 B-V-magnitude 1
U-magnitude 5,65 0,05 U-B-magnitude 0,89

double/multiple star system information:

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


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: 21h 35min 59,865sec DEC: -77 36' 50,23'' 0,01 arcsec
position (J2000) RA: 21h 41min 28,687sec DEC: -77 23' 24,3''
proper motion J1950 (FK4) RA: 0,0176 arcsec/a DEC: -0,239 arcsec/a 0,003 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0155 arcsec/a DEC: -0,242 arcsec/a
source of proper motion data Determined by source catalog


visual 3,7 (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.


source catalogue FK4, catalogue number: 810
Durchmusterung CP-77 1510
Boss General Catalogue 30289
Henry Draper Catalogue 205478