Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crater |
HD 99922 A | |
Right ascension | 11h 29m 38.612s [1] |
Declination | −24° 27′ 50.52″ [1] |
Apparent magnitude (V) | 5.813 [1] |
HD 99922 B | |
Right ascension | 11h 29m 39.209s [1] |
Declination | −24° 27′ 49.24″ [1] |
Apparent magnitude (V) | 8.543 [1] |
Characteristics | |
HD 99922 A | |
Spectral type | A0V [2] |
B−V color index | +0.07 [3] |
Astrometry | |
HD 99922 A | |
Radial velocity (Rv) | -2.50 [4] km/s |
Proper motion (μ) |
RA: -56.4
[1]
mas/
yr Dec.: 9.7 [1] mas/ yr |
Parallax (π) | 7.32 ± 0.61 mas [5] |
Distance | 450 ± 40
ly (140 ± 10 pc) |
HD 99922 B | |
Proper motion (μ) |
RA: -49.7
[1]
mas/
yr Dec.: 19.4 [1] mas/ yr |
Other designations | |
HD 99922 A: SAO 179935 [6] | |
HD 99922 B: SAO 179936 [7] | |
Database references | |
SIMBAD | AB |
A | |
B |
HD 99922 is a double star system in the constellation of Crater. It shines with an apparent visual magnitude of 5.77 from a distance of about 450 light years (140 parsecs) away from the Earth. The primary star is an A-type main sequence star; the secondary star is located about 8 arcseconds away. [7]
Other designations include HR 4428 and HIP 56078. [2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crater |
HD 99922 A | |
Right ascension | 11h 29m 38.612s [1] |
Declination | −24° 27′ 50.52″ [1] |
Apparent magnitude (V) | 5.813 [1] |
HD 99922 B | |
Right ascension | 11h 29m 39.209s [1] |
Declination | −24° 27′ 49.24″ [1] |
Apparent magnitude (V) | 8.543 [1] |
Characteristics | |
HD 99922 A | |
Spectral type | A0V [2] |
B−V color index | +0.07 [3] |
Astrometry | |
HD 99922 A | |
Radial velocity (Rv) | -2.50 [4] km/s |
Proper motion (μ) |
RA: -56.4
[1]
mas/
yr Dec.: 9.7 [1] mas/ yr |
Parallax (π) | 7.32 ± 0.61 mas [5] |
Distance | 450 ± 40
ly (140 ± 10 pc) |
HD 99922 B | |
Proper motion (μ) |
RA: -49.7
[1]
mas/
yr Dec.: 19.4 [1] mas/ yr |
Other designations | |
HD 99922 A: SAO 179935 [6] | |
HD 99922 B: SAO 179936 [7] | |
Database references | |
SIMBAD | AB |
A | |
B |
HD 99922 is a double star system in the constellation of Crater. It shines with an apparent visual magnitude of 5.77 from a distance of about 450 light years (140 parsecs) away from the Earth. The primary star is an A-type main sequence star; the secondary star is located about 8 arcseconds away. [7]
Other designations include HR 4428 and HIP 56078. [2]