NS Puppis

NS Puppis


Location of NS Puppis (circled)

Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 08h 11m 21.49359s[1]
Declination −39° 37′ 06.7609″[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: −8,87[1] mas/yr
Dec.: 3.52[1] mas/yr
Parallax (π)1.92 ± 0.35[1] mas
Distanceapprox. 1,700 ly
(approx. 520 pc)
Details
Mass9.7[5] M☉
Luminosity10,370[6] L☉
Temperature4,062[6] K
Age25.1[5] Myr
Other designations
h1 Pup, HD 68553, HIP 40091, HR 3225, SAO 198908
Database references
SIMBADdata

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[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. 1 2 3 4 5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. 1 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 (ISSN 0067-0049). 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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  5. 1 2 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: 190. arXiv:1007.4883Freely accessible. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.
  6. 1 2 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
  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 Vol. 4. 4: 33. Bibcode:1965BOTT....4...33I.
  9. ↑ Cousins, A. W. J. (1966). "Fabry photometry of bright southern stars". Royal Observatory bulletins ; no. 122; Royal Observatory bulletins. Series E ; no. 122. 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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