NS Puppis
(Redirected from HR 3225)
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 08h 11m 21.4934s[1] |
| Declination | −39° 37′ 06.7588″[1] |
| Apparent magnitude (V) | 4.40 - 4.50[2] |
| Characteristics | |
| Evolutionary stage | Supergiant |
| Spectral type | K4.5 Ib[3] |
| Variable type | Lc[2] |
| Astrometry | |
| Radial velocity (Rv) | 16.20[4] km/s |
| Proper motion (μ) | RA: −9.072 mas/yr[1] Dec.: 3.211 mas/yr[1] |
| Parallax (π) | 2.3831 ± 0.1188 mas[1] |
| Distance | 1,363+62 −65 ly (418+19 −20 pc)[5] |
| Details | |
| Mass | 8±0.9[6] M☉ |
| Radius | 213±24[6] R☉ |
| Luminosity | 9,772[6] L☉ |
| Surface gravity (log g) | 0.73±0.02[6] cgs |
| Temperature | 3,961±125[6] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
NS Puppis (NS Pup) is an irregular variable star in the constellation Puppis. Its apparent magnitude varies between 4.4 and 4.5.
NS Puppis is a naked eye star, given the h1 and the Bright Star Catalogue number 3225. It was considered to be a stable star[8][9] until 1966.[10] It was given the variable star designation NS Puppis in 1975.[11]
h2 Puppis is another luminous K-type star with almost the same visual magnitude about a degree to the southeast.
References
[edit]- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- ^ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373. S2CID 123149047.
- ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ Bailer-Jones, C. A. L.; Rybizki, J.; Fouesneau, M.; Demleitner, M.; Andrae, R. (2021-03-01). "Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3". The Astronomical Journal. 161 (3): 147. arXiv:2012.05220. Bibcode:2021AJ....161..147B. doi:10.3847/1538-3881/abd806. ISSN 0004-6256. Data about this star can be seen here.
- ^ a b c d e Kallinger, T.; Beck, P. G.; Hekker, S.; Huber, D.; Kuschnig, R.; Rockenbauer, M.; Winter, P. M.; Weiss, W. W.; Handler, G.; Moffat, A. F. J.; Pigulski, A.; Popowicz, A.; Wade, G. A.; Zwintz, K. (2019-04-01), "Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation", Astronomy & Astrophysics, 624: A35, arXiv:1902.07531, doi:10.1051/0004-6361/201834514, ISSN 0004-6361.
- ^ "/ftp/cats/more/HIP/cdroms/cats". Centre de Données astronomiques de Strasbourg. Strasbourg astronomical Data Center. Retrieved 15 October 2022.
- ^ Irwin, John B. (1961). "Southern Cepheid Photometry". Astrophysical Journal Supplement. 6: 253. Bibcode:1961ApJS....6..253I. doi:10.1086/190066.
- ^ Iriarte, B. (1965). "BVRI Photoelectric Photometry for 275 Stars located between -25° y -50° (Spanish Title: Fotometría Fotoeléctrica en BVRI para 275 estrellas comprendidas en su) mayoría entre -25° y -50°". Boletín de los Observatorios de Tonantzintla y Tacubaya. 4: 33. Bibcode:1965BOTT....4...33I.
- ^ Cousins, A. W. J. (1966). "Fabry photometry of bright southern stars". Royal Observatory Bulletins, Series E. 122: 59. Bibcode:1966RGOB..122...59C.
- ^ Kukarkin, B. V.; Kholopov, P. N.; Kukarkina, N. P.; Perova, N. B. (1975). "60th Name-List of Variable Stars". Information Bulletin on Variable Stars. 961: 1. Bibcode:1975IBVS..961....1K.
