g1Fornacis
catalogues and names | g1For, HR 844, HD 17713, SAO 168081, WDS 02498-2434A |
constellation | Fornax |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
position (J2000) | RA: 2h 49min 51sec | DEC: -24° 33' 37'' |
position (J1900) | RA: 2h 45min 25,1sec | DEC: -24° 58' 17'' |
proper motion (J2000) | RA: -0,043 arcsec/a | DEC: -0,127 arcsec/a |
radial velocity | -6 km/s |
magnitude
visual magnitude | 6,14 (V on UBV Johnson system) |
spectral / color information
spectral class | K1III |
B-V-magnitude | 1,07 |
double/multiple star system information
number of components of multiple star system | 3 |
separation | 40,9 arcsec |
mag difference (of double or brightest multiple) | 4,4 |
component ID | AC |
note (category: double and multiple data): | AB CPM, B, 13v at 12"; C, optical. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 2h 49min 50,977sec | DEC: -24° 33' 37,26'' | ±0,19 arcsec | source: 16 |
proper motion (J2000) | RA: -0,0033 arcsec/a | DEC: -0,129 arcsec/a | source: 25 | |
radial velocity | -6 km/s | source: 25 | ||
galactic coord. (B1950) | longitude: 214,11° | latitude: -63,29° | ||
GCI unit vector (J2000) | X: 0,670974 | Y: 0,614025 | Z: -0,415651 |
magnitude:
visual | 6,14 (observed) | source: 25 |
photovisual | 6,2 | source: 16 |
spectral information:
spectral class | G5 | source: 96 | |
Morgan-Keenan | K1III | source: 25 | |
B-magnitude | 7,21 ±0,05 | B-V-magnitude | 1,07 |
double/multiple star system information:
separation between brightest and second brightest component | 12 arcsec |
magnitude difference between brightest and second brightest component | 6,6 |
position angle | 145 ° |
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: 2h 47min 38,022sec | DEC: -24° 45' 53,61'' | ±0,04 arcsec |
position (J2000) | RA: 2h 49min 51,008sec | DEC: -24° 33' 37,17'' | |
proper motion J1950 (FK4) | RA: -0,0034 arcsec/a | DEC: -0,124 arcsec/a | ±0,007 arcsec/a in RA ±0,007 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: -0,0032 arcsec/a | DEC: -0,127 arcsec/a | |
source of proper motion data | Determined by source catalog |
magnitude:
visual | 6,3 (accuracy: 2 decimals) |
source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
spectral class | G5 |
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: 3404 |
Durchmusterung | CD-25 1120 |
Boss General Catalogue | 3404 |
Henry Draper Catalogue | 17713 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
position (J2000) | RA: 2h 49,8min | DEC: -24° 34' |
proper motion (J2000) | RA: -0,048 arcsec/a | DEC: -0,127 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 | 1880 | 6 | 145° | 12'' | 6,14 | 12,7 | K1III | BU 877 |
AC | 1880 | 6 | 157° | 48,8'' | 6,14 | 10,7 | - | HJ 2161 |
1954 | 143° | 40,9'' |
discoverer information:
discoverer code | discoverer | reference |
BU 877 | Burnham, S.W. | - |
HJ 2161 | Herschel, J. | - |
notes:
note | Gamma (1) For. |