Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Dorado |
Right ascension | 06h 11m 15.0s [1] |
Declination | −65° 35′ 21.9″ [1] |
Apparent magnitude (V) | 5.01 [2] |
Characteristics | |
Spectral type | M2.5III [2] |
B−V color index | 1.599 [2] |
Astrometry | |
Radial velocity (Rv) | +34.5±0.8 [2] km/s |
Proper motion (μ) |
RA: -23.823
[1]
mas/
yr Dec.: +118.639 [1] mas/ yr |
Parallax (π) | 5.6046 ± 0.1562 mas [1] |
Distance | 580 ± 20
ly (178 ± 5 pc) |
Absolute magnitude (MV) | −1.45 [2] |
Details | |
Radius | 81.89 [1] R☉ |
Luminosity | 1165 [1] L☉ |
Surface gravity (log g) | 0.403 [3] cgs |
Temperature | 3,726+313 −154 [1] K |
Other designations | |
Database references | |
SIMBAD | data |
Eta2 Doradus, Latinized from η2 Doradus, is a star in the southern constellation of Dorado. It is visible to the naked eye as a dim, reddish star with an apparent visual magnitude of 5.01 [2] It is about 580 light years from the Sun as shown by parallax, and its net movement is one of receding, having a radial velocity of +34.5 km/s. [2] It is circumpolar south of latitude 24° 24′ S. [5]
This object is an M-type giant star, with its stellar classification being M2.5III. [2] [6] It has left the main sequence after exhausting its core hydrogen and expanded to around 80 R☉. The star is radiating about 1200 [1] times the Sun's luminosity from its photosphere, at an effective temperature of 3726 K. [1]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Dorado |
Right ascension | 06h 11m 15.0s [1] |
Declination | −65° 35′ 21.9″ [1] |
Apparent magnitude (V) | 5.01 [2] |
Characteristics | |
Spectral type | M2.5III [2] |
B−V color index | 1.599 [2] |
Astrometry | |
Radial velocity (Rv) | +34.5±0.8 [2] km/s |
Proper motion (μ) |
RA: -23.823
[1]
mas/
yr Dec.: +118.639 [1] mas/ yr |
Parallax (π) | 5.6046 ± 0.1562 mas [1] |
Distance | 580 ± 20
ly (178 ± 5 pc) |
Absolute magnitude (MV) | −1.45 [2] |
Details | |
Radius | 81.89 [1] R☉ |
Luminosity | 1165 [1] L☉ |
Surface gravity (log g) | 0.403 [3] cgs |
Temperature | 3,726+313 −154 [1] K |
Other designations | |
Database references | |
SIMBAD | data |
Eta2 Doradus, Latinized from η2 Doradus, is a star in the southern constellation of Dorado. It is visible to the naked eye as a dim, reddish star with an apparent visual magnitude of 5.01 [2] It is about 580 light years from the Sun as shown by parallax, and its net movement is one of receding, having a radial velocity of +34.5 km/s. [2] It is circumpolar south of latitude 24° 24′ S. [5]
This object is an M-type giant star, with its stellar classification being M2.5III. [2] [6] It has left the main sequence after exhausting its core hydrogen and expanded to around 80 R☉. The star is radiating about 1200 [1] times the Sun's luminosity from its photosphere, at an effective temperature of 3726 K. [1]