User:Aytosyrm D-B/HD 18391
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 02h 59m 48.7225s |
| Declination | +57° 39′ 47.673″ |
| Apparent magnitude (V) | +6.89 |
| Characteristics | |
| Spectral type | G5Iab-G7Iab |
| Variable type | Classical Cepheid variable star |
| Astrometry | |
| Distance | 8,389 ly |
| Details | |
| Mass | 15.9-17.3 M☉ |
| Radius | 228-254 R☉ |
| Luminosity | 41,138-56,634 L☉ |
| Temperature | 5,444-5,587 K |
| Other designations | |
HD 18391, HIP 13962, SAO 23749, BD +57° 672, IRAS 02560+5727, IRC +60108, TYC 3709-448-1, 2MASS J02594873+5739476 | |
HD 18391, also named HIP 13962 or SAO 23749, is a yellow supergiant star in the constellation Cassiopeia, the star is located at 8,389 light years away from earth
The name HD 18391 derives directly from the fact that the star is the 18,391st 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 13962 derives directly from the fact that the star is the 13,962nd stars in the Hipparcos catalogue, and The name SAO 23749 derives directly from the fact that the star is the 23,749th stars in the Smithsonian Astrophysical Star catalogue
If HD 18391 was placed into center of the solar system, that It's will engulf Mercury, Venus, and Earth, Because HD 18391's size was 228 to 254 times large as the sun