l 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

  4. The Washington Visual Double Star Catalog, 1996.0


catalogues and names l Oct, HR 8280, HD 206240, SAO 258914, WDS 21509-8243A
constellation Octans

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


position, motion, parallax:

position (J2000) RA: 21h 50min 54,3sec DEC: -82 43' 9''
position (J1900) RA: 21h 35min 36,4sec DEC: -83 10' 44''
proper motion (J2000) RA: 0,058 arcsec/a DEC: -0,036 arcsec/a
radial velocity -11 km/s
dynamical parallax 0,011 arcsec

magnitude

visual magnitude 5,29
(V on UBV Johnson system)

spectral / color information

spectral class G8-K0III
B-V-magnitude 0,75
U-B-magnitude 0,47

double/multiple star system information

separation 2,8 arcsec
mag difference (of double or brightest multiple) 2,3
note Worley (1978) update of the IDS
note (category: double and multiple data): Binary. Companion A3.

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

position, motion, parallax:

position (J2000) RA: 21h 50min 54,63sec DEC: -82 43' 7,94'' 0,19 arcsec source: 16
proper motion (J2000) RA: 0,0285 arcsec/a DEC: -0,037 arcsec/a source: 25
radial velocity -11 km/s source: 25
galactic coord. (B1950) longitude: 309,02 latitude: -32,13
GCI unit vector (J2000) X: 0,107159 Y: -0,067671 Z: -0,991936

magnitude:

visual 5,29 (observed) source: 25
photovisual 5 source: 16

spectral information:

spectral class G0 source: 96
Morgan-Keenan G8-K0III source: 25
B-magnitude 6,04 0,05 B-V-magnitude 0,75
U-magnitude 6,51 0,05 U-B-magnitude 0,47

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 2,8 arcsec
magnitude difference between brightest and second brightest component 2,2
position angle 68

component magnitude spectral class catalogue(s)/name(s)
A 5,29 G0 l Octantis, HR 8280, HD 206240, SAO 258914
B 5,54 G0

sources:

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: 21h 43min 27,797sec DEC: -82 57' 5,53'' 0,015 arcsec
position (J2000) RA: 21h 50min 54,282sec DEC: -82 43' 8,5''
proper motion J1950 (FK4) RA: 0,0348 arcsec/a DEC: -0,033 arcsec/a 0,002 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0307 arcsec/a DEC: -0,036 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 5,5 (accuracy: 1 decimal)
source of visual magnitude data Based on Durchmusterung magnitudes and visual estimates

spectral information:

spectral class G0
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: 30472
Durchmusterung CP-83 722
Boss General Catalogue 30472
Henry Draper Catalogue 206240
The "SAO Catalog" entry refers to two consecutive HD numbers, the lower of which is given.

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

position and proper motion:

position (J2000) RA: 21h 50,9min DEC: -82 43'
proper motion (J2000) RA: 0,062 arcsec/a DEC: -0,029 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
- 1835 15 83 3,1'' 5,4 7,6 G8-K0III HJ 5278
1955 68 2,8''

discoverer information:

discoverer code discoverer reference
HJ 5278 Herschel, J. -

notes:

note Lambda Oct.