NS Puppis

NS Puppis (NS Pup) is an irregular variable star in the constellation Puppis. Its apparent magnitude varies between 4.4 and 4.5.

This article is about h1 Puppis. For other stars with this Bayer designation, see h Puppis. For H Puppis, see HD 53811.
NS Puppis
Location of NS Puppis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 08h 11m 21.4923s[1]
Declination −39° 37′ 06.7666″[1]
Apparent magnitude (V) 4.40 - 4.50[2]
Characteristics
Spectral type K4.5 Ib[3]
Variable type Lc[2]
Astrometry
Radial velocity (Rv)16.20[4] km/s
Proper motion (μ) RA: −8.206[1] mas/yr
Dec.: 3.694[1] mas/yr
Parallax (π)3.12 ± 0.34[1] mas
Distanceapprox. 1,000 ly
(approx. 320 pc)
Details
Mass9.7[5] M☉
Radius134[6] R☉
Luminosity2,290.87 - 2,488.86[6] L☉
Temperature3,898[6] K
Age25.1[5] Myr
Other designations
h1 Pup, CD−39° 4084, HD 68553, HIP 40091, HR 3225, SAO 198908
Database references
SIMBADdata

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[7][8] until 1966.[9] It was given the variable star designation NS Puppis in 1975.[10]

h2 Puppis is another luminous K-type star with almost the same visual magnitude about a degree to the southeast.

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. 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.
  3. 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.
  4. 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.
  5. Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
  6. Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal. 158 (1): 20. arXiv:1905.03744. Bibcode:2019AJ....158...20M. doi:10.3847/1538-3881/ab1cbd. S2CID 148571616.
  7. Irwin, John B. (1961). "Southern Cepheid Photometry". Astrophysical Journal Supplement. 6: 253. Bibcode:1961ApJS....6..253I. doi:10.1086/190066.
  8. 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.
  9. Cousins, A. W. J. (1966). "Fabry photometry of bright southern stars". Royal Observatory Bulletins, Series E. 122: 59. Bibcode:1966RGOB..122...59C.
  10. 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.
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