Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aquarius |
Right ascension | 22h 16m 48.04643s [1] |
Declination | −12° 49′ 53.1673″ [1] |
Apparent magnitude (V) | 5.34 [2] |
Characteristics | |
Evolutionary stage | giant |
Spectral type | K1 III [3] |
B−V color index | 1.132±0.001 [2] |
Astrometry | |
Radial velocity (Rv) | +13.0±4.2 [2] km/s |
Proper motion (μ) |
RA: +1.89
[4]
mas/
yr Dec.: +5.03 [4] mas/ yr |
Parallax (π) | 7.3032 ± 0.1451 mas [1] |
Distance | 447 ± 9
ly (137 ± 3 pc) |
Absolute magnitude (MV) | −0.93 [2] |
Details | |
Mass | 3.14±0.27 [5] M☉ |
Radius | 11.24+0.23 −0.32 [1] R☉ |
Luminosity | 69.950±3.907 [1] L☉ |
Surface gravity (log g) | 2.90 [6] cgs |
Temperature | 4,980+71 −51 [1] K |
Metallicity [Fe/H] | +0.00±0.04 [2] dex |
Rotational velocity (v sin i) | 3.43 [6] km/s |
Age | 470±150 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
42 Aquarii is a single [8] star located 447 light years away from the Sun in the zodiac constellation of Aquarius. 42 Aquarii is its Flamsteed designation. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 5.34. [2] This object is moving further from the Sun with a heliocentric radial velocity of around +13 km/s. [2]
This object is an evolved giant star with a stellar classification of K1 III, [3] most likely (82% chance) on the horizontal branch. [5] It is around 470 [5] million years old with a projected rotational velocity of 3.4 km/s. [6] The star has over three [5] times the mass of the Sun and has expanded to 11 [1] times the Sun's radius. It is radiating 70 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,980 K. [1]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aquarius |
Right ascension | 22h 16m 48.04643s [1] |
Declination | −12° 49′ 53.1673″ [1] |
Apparent magnitude (V) | 5.34 [2] |
Characteristics | |
Evolutionary stage | giant |
Spectral type | K1 III [3] |
B−V color index | 1.132±0.001 [2] |
Astrometry | |
Radial velocity (Rv) | +13.0±4.2 [2] km/s |
Proper motion (μ) |
RA: +1.89
[4]
mas/
yr Dec.: +5.03 [4] mas/ yr |
Parallax (π) | 7.3032 ± 0.1451 mas [1] |
Distance | 447 ± 9
ly (137 ± 3 pc) |
Absolute magnitude (MV) | −0.93 [2] |
Details | |
Mass | 3.14±0.27 [5] M☉ |
Radius | 11.24+0.23 −0.32 [1] R☉ |
Luminosity | 69.950±3.907 [1] L☉ |
Surface gravity (log g) | 2.90 [6] cgs |
Temperature | 4,980+71 −51 [1] K |
Metallicity [Fe/H] | +0.00±0.04 [2] dex |
Rotational velocity (v sin i) | 3.43 [6] km/s |
Age | 470±150 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
42 Aquarii is a single [8] star located 447 light years away from the Sun in the zodiac constellation of Aquarius. 42 Aquarii is its Flamsteed designation. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 5.34. [2] This object is moving further from the Sun with a heliocentric radial velocity of around +13 km/s. [2]
This object is an evolved giant star with a stellar classification of K1 III, [3] most likely (82% chance) on the horizontal branch. [5] It is around 470 [5] million years old with a projected rotational velocity of 3.4 km/s. [6] The star has over three [5] times the mass of the Sun and has expanded to 11 [1] times the Sun's radius. It is radiating 70 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,980 K. [1]