Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Apus |
Right ascension | 15h 40m 21.33360s [1] |
Declination | –73° 26′ 48.0648″ [1] |
Apparent magnitude (V) | 5.65 [2] |
Characteristics | |
Spectral type | B7 III-IV + K0 V [3] |
U−B color index | –0.38 [2] |
B−V color index | –0.04 [2] |
Astrometry | |
Radial velocity (Rv) | –19.0 [4] km/s |
Proper motion (μ) |
RA: –12.36
[1]
mas/
yr Dec.: –20.56 [1] mas/ yr |
Parallax (π) | 4.18 ± 0.28 mas [1] |
Distance | 780 ± 50
ly (240 ± 20 pc) |
Absolute magnitude (MV) | −1.24 [5] |
Details | |
Luminosity | 351 [5] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
Kappa2 Apodis (κ2 Apodis) is the Bayer designation for a double star in the southern circumpolar constellation of Apus. It is located at a distance of roughly 780 light-years (240 parsecs) from Earth, based upon parallax measurements with a 7% margin of error. The pair have a combined apparent visual magnitude of +5.65, [2] which makes the system faintly visible to the naked eye.
The brighter star has a stellar classification of B7 III-IV, with the luminosity class of III-IV suggesting that it may lie in an intermediate stage between a subgiant and a giant star. [7] The faint companion is a K-type main sequence star with a classification of K0 V. It has a visual magnitude of 12.5 and an angular separation of 15 arcseconds from the brighter member. [3]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Apus |
Right ascension | 15h 40m 21.33360s [1] |
Declination | –73° 26′ 48.0648″ [1] |
Apparent magnitude (V) | 5.65 [2] |
Characteristics | |
Spectral type | B7 III-IV + K0 V [3] |
U−B color index | –0.38 [2] |
B−V color index | –0.04 [2] |
Astrometry | |
Radial velocity (Rv) | –19.0 [4] km/s |
Proper motion (μ) |
RA: –12.36
[1]
mas/
yr Dec.: –20.56 [1] mas/ yr |
Parallax (π) | 4.18 ± 0.28 mas [1] |
Distance | 780 ± 50
ly (240 ± 20 pc) |
Absolute magnitude (MV) | −1.24 [5] |
Details | |
Luminosity | 351 [5] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
Kappa2 Apodis (κ2 Apodis) is the Bayer designation for a double star in the southern circumpolar constellation of Apus. It is located at a distance of roughly 780 light-years (240 parsecs) from Earth, based upon parallax measurements with a 7% margin of error. The pair have a combined apparent visual magnitude of +5.65, [2] which makes the system faintly visible to the naked eye.
The brighter star has a stellar classification of B7 III-IV, with the luminosity class of III-IV suggesting that it may lie in an intermediate stage between a subgiant and a giant star. [7] The faint companion is a K-type main sequence star with a classification of K0 V. It has a visual magnitude of 12.5 and an angular separation of 15 arcseconds from the brighter member. [3]