AH Scorpii (shortened as AH Sco) is a red supergiant variable star in the constellation Scorpius. It is a very large star at 1,411 times the radius of our Sun and one of the most luminous stars of its type. It is one of the largest stars in the Milky Way.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
AH Scorpii
|
Observation data
Epoch J2000 Equinox J2000 |
| Constellation |
Scorpius |
| Right ascension |
17h 11m 17.01945s[1] |
| Declination |
−32° 19′ 30.7140″[1] |
| Apparent magnitude (V) |
6.5 - 9.6[2] |
| Characteristics |
| Spectral type |
M4-5 Ia-Iab[3] |
| B−V color index |
+2.57[4] |
| Variable type |
SRc[3] |
| Astrometry |
|---|
|
|---|
| Radial velocity (Rv) | −13.40±2.4[5] km/s |
| Proper motion (μ) | RA: −2.322±0.115[1] mas/yr
Dec.: −2.610±0.068[1] mas/yr |
| Parallax (π) | 0.5632 ± 0.0799[1] mas |
| Distance | 7,400 ly
(2,260[6] pc) |
| Absolute magnitude (MV) | −5.8[7] |
|
|---|
| Details |
|---|
|
|---|
| Mass | 10[6] M☉ |
| Radius | 1,411[4] R☉ |
| Luminosity | 330,000+270,000
−150,000[4] L☉ |
| Surface gravity (log g) | −0.5[4] cgs |
| Temperature | 3,450[8] - 3,682[4] K |
|
|---|
| Other designations |
|---|
AH Sco, AN 223.1907, GSC 07365-00527, HD 155161, HIP 84071, CD−32°12429, 2MASS J17111702-3219308, IRC−30282, IRAS 17080-3215, RAFGL 1927, AAVSO 1704-32 |
| Database references |
|---|
| SIMBAD | data |
Close
