V1943 Sagittarii
V1943 Sagittarii, also named HD 190643, CD -27° 14534, CP -27° 6937 or IRAS 20038-2722, is a red hypergiant star in the constellation Sagittarius, the star is located at around 15,000 light years away from earth
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 20h 06m 55.2441s |
| Declination | −27° 13′ 29.766″ |
| Apparent magnitude (V) | +8.04 |
| Characteristics | |
| Spectral type | M5Ia0-M7Ia0 |
| Variable type | Semi-Regular variable star + Mira variable star |
| Astrometry | |
| Distance | ~15,000 ly |
| Details | |
| Mass | 36-54 M☉ |
| Radius | 2,361 (2,243-2,479), 2,145-2,462 R☉ |
| Luminosity | 380,851-661,078 L☉ |
| Temperature | 3,096-3,317 K |
| Other designations | |
V1943 Sagittarii, HD 190643, HIP 99082, SAO 188923, CD -27° 14534, CP -27° 6937, IRAS 20038-2722, TYC 6913-836-1, IRC -30425, 2MASS J20065522-2713295 | |
The name HD 190643 derives directly from the fact that the star is the 190,643rd stars in the Henry Draper catalogue, however, the star doesn't have HR numbers, Because the star is too faint to visible by naked eye
The name HIP 99082 derives directly from the fact that the star is the 99,082nd stars in the Hipparcos catalogue, and The name SAO 188923 derives directly from the fact that the star is the 188,923rd stars in the Smithsonian Astrophysical Star catalogue
If V1943 Sagittarii was placed into center of the solar system, that It's will engulf Mercury, Venus, Earth, Mars, Ceres, Jupiter, and even Saturn, Because V1943 Sagittarii's size was 2,243 to 2,479 times large as the sun