HD 57197
M Puppis (M Pup, HR 2789, HD 57197) is a blue giant or bright giant star (spectral type B8II/III[3]) in the constellation Puppis. Its apparent magnitude is 5.84,[2] which means it is visible with the naked eye under optimal conditions. It is approximately 590 light years away based on parallax.[1]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 18m 04.24926s[1] |
| Declination | −43° 59′ 12.4288″[1] |
| Apparent magnitude (V) | 5.84[2] |
| Characteristics | |
| Spectral type | B8II/III[3] |
| Astrometry | |
| Radial velocity (Rv) | +13.00[4] km/s |
| Proper motion (μ) | RA: -9.60[1] mas/yr Dec.: -5.46[1] mas/yr |
| Parallax (π) | 5.51 ± 0.23[1] mas |
| Distance | 590 ± 20 ly (181 ± 8 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- Hog, E.; Fabricius, C. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. Bibcode:2000A&A...355L..27H. Vizier catalog entry
- Houk, N. (1978). "Catalogue of two dimensional spectral types for the HD stars, Vol. 2". Michigan Spectral Survey. 2. Bibcode:1978mcts.book.....H.
- Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776.
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