HD 21447
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 03h 30m 00.1837s |
| Declination | +55° 27′ 06.51″ |
| Apparent magnitude (V) | 5.099 |
| Characteristics | |
| Spectral type | A1V |
| U−B color index | 0.04 |
| B−V color index | 0.05 |
| R−I color index | -0.01 |
| Variable type | Variable star NSV 1159 |
| Astrometry | |
| Proper motion (μ) | RA: -45.38 mas/yr Dec.: -11.77 mas/yr |
| Parallax (π) | 17.07 ± 0.69 mas |
| Distance | 191 ± 8 ly (59 ± 2 pc) |
| Absolute magnitude (MV) | 5.14 |
| Details | |
| Mass | 3,1 M☉ |
| Radius | 2,1 R☉ |
| Luminosity | 40 L☉ |
| Temperature | 7,500–10,000 K |
| Rotation | 179 Km/s 0,001628348735 Year |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HD 21447 (or D Camelopardalis), is a star located in the constellation Camelopardalis. The star is also known as HR 1046.
HD 21447 an A1V Dwarf star with an effective temperature of 9400 Kelvin. It has an apparent visual magnitude of +5.09, and an absolute visual magnitude of +1.25. It is located 190 light years from the Sun, and has a mass of 2.6 solar masses. HD 21447 is an irregular variable star.
HD 21447 is located at Right Ascension 03h 30m 00.20s and Declination +55 deg 27 arcmin 07 arcsec.
References
- http://www.alcyone.de/cgi-bin/search.pl?object=HR1046
- http://server3.wikisky.org/starview?object_type=1&object_id=1996
- http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+1046&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id
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