Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lupus |
Right ascension | 14h 27m 12.18204s [1] |
Declination | −46° 08′ 58.1316″ [1] |
Apparent magnitude (V) | 5.83 [2] |
Characteristics | |
Spectral type | A1m A5/7-F2 [3] |
B−V color index | 0.311±0.004 [2] |
Astrometry | |
Radial velocity (Rv) | −30.0±3.8 [4] km/s |
Proper motion (μ) |
RA: −168.816
[1]
mas/
yr Dec.: −82.297 [1] mas/ yr |
Parallax (π) | 15.8815 ± 0.2813 mas [1] |
Distance | 205 ± 4
ly (63 ± 1 pc) |
Absolute magnitude (MV) | 2.01 [2] |
Details | |
Luminosity | 13.01 [2] L☉ |
Surface gravity (log g) | 3.92 [5] cgs |
Temperature | 7,300 [5] K |
Metallicity [Fe/H] | 0.2 [5] dex |
Other designations | |
Database references | |
SIMBAD | data |
HR 5401 is a possible astrometric binary [7] star system in the southern constellation of Lupus. With an apparent visual magnitude of 5.83, [2] it is just visible to the naked eye under good seeing conditions. The distance to HR 5401 can be estimated from its annual parallax shift of 15.9 mas, [1] yielding a range of 205 light years. It is moving closer to Earth with a heliocentric radial velocity of −30 km/s, [4] and is expected to come within 161 ly in ~524,000 years. [2]
This is an Am star [8] with a stellar classification of A1m A5/7-F2. [3] Lu (1991) lists it as a likely dwarf barium star. [9] It is radiating 13 [2] times the Sun's luminosity from its photosphere at an effective temperature of 7,300 K. [5] This system is a source of X-ray emission which may be coming from the companion. [8]
HR 5401 has two visual companions. Component B is a magnitude 11.50 star at an angular separation of 33.1 ″ along a position angle (PA) of 114°, as of 1999. The second companion, designated component C, is magnitude 11.16 with a separation of 27.20″ at a PA of 164°, as of 2000. [10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lupus |
Right ascension | 14h 27m 12.18204s [1] |
Declination | −46° 08′ 58.1316″ [1] |
Apparent magnitude (V) | 5.83 [2] |
Characteristics | |
Spectral type | A1m A5/7-F2 [3] |
B−V color index | 0.311±0.004 [2] |
Astrometry | |
Radial velocity (Rv) | −30.0±3.8 [4] km/s |
Proper motion (μ) |
RA: −168.816
[1]
mas/
yr Dec.: −82.297 [1] mas/ yr |
Parallax (π) | 15.8815 ± 0.2813 mas [1] |
Distance | 205 ± 4
ly (63 ± 1 pc) |
Absolute magnitude (MV) | 2.01 [2] |
Details | |
Luminosity | 13.01 [2] L☉ |
Surface gravity (log g) | 3.92 [5] cgs |
Temperature | 7,300 [5] K |
Metallicity [Fe/H] | 0.2 [5] dex |
Other designations | |
Database references | |
SIMBAD | data |
HR 5401 is a possible astrometric binary [7] star system in the southern constellation of Lupus. With an apparent visual magnitude of 5.83, [2] it is just visible to the naked eye under good seeing conditions. The distance to HR 5401 can be estimated from its annual parallax shift of 15.9 mas, [1] yielding a range of 205 light years. It is moving closer to Earth with a heliocentric radial velocity of −30 km/s, [4] and is expected to come within 161 ly in ~524,000 years. [2]
This is an Am star [8] with a stellar classification of A1m A5/7-F2. [3] Lu (1991) lists it as a likely dwarf barium star. [9] It is radiating 13 [2] times the Sun's luminosity from its photosphere at an effective temperature of 7,300 K. [5] This system is a source of X-ray emission which may be coming from the companion. [8]
HR 5401 has two visual companions. Component B is a magnitude 11.50 star at an angular separation of 33.1 ″ along a position angle (PA) of 114°, as of 1999. The second companion, designated component C, is magnitude 11.16 with a separation of 27.20″ at a PA of 164°, as of 2000. [10]