HD 54475

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HD 54475
HD54475LightCurve.png
A light curve for HD 54475, plotted from TESS data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Puppis [2] [note 1]
Right ascension 07h 07m 07s [3]
Declination −40° 53′ 35.77″ [3]
Apparent magnitude  (V)5.783±0.009 [3]
Characteristics
Evolutionary stage B-type main-sequence star [3]
Spectral type B3V [3]
Variable type Pulsating variable [3]
Astrometry
Radial velocity (Rv)6±3.2 [3] km/s
Proper motion (μ)RA: −10.554±0.069 mas/yr [3]
Dec.: 11.163±0.0689 mas/yr [3]
Parallax (π)4.2±0.2  mas [4]
Distance 776.19  ly
(238.1  pc) [4]
Absolute magnitude  (MV)-0.95 [5]
Details
Mass 6.2±0.1 [6]   M☉
Radius 3.544 [7] [a]   R☉
Luminosity 689.67 [8]   L☉
Temperature 15,723 [8]   K
Age 15.8±0.3 [6]   Myr
Other designations
CD−40 2930, HD 54475, HIP 34339, HR 2691, SAO 218465, TIC 157533670, TYC 7633-2698-1, WISE J070707.07-405335.6
Database references
SIMBAD data

D Puppis, also known as HD 54475, is a B-type star and a pulsating variable in the constellation of Puppis. [3] [5] It has an apparent magnitude of 5.783, [3] which is enough to be visible to the unaided eye. [b] The distance to D Puppis, based on a parallax of 4.2±0.2  mas from the Hipparcos satellite, is 776 light-years. [4] [c]

Contents

Characteristics

This is a B-type main-sequence star with a spectral type of B3V. [3] It has 6.2 times the mass of the Sun [6] and 3.54 times the Sun's radius. [7] It radiates 690 times the solar luminosity from its outer atmosphere at a temperature of 15,723 K. [8] Its age is estimated to be of about 15 million years. [6]

The distance to D Puppis is about 776 light-years, based on a parallax of 4.2±0.2  mas from the Hipparcos satellite. [4]

It is mentioned to be a pulsating variable star on SIMBAD, [3] but the American Association of Variable Star Observers does not mention any variable-star type for the star. [2]

Notes

  1. ↑ Calculated using an angular diameter of 0.1422608 mas and an adopted distance of 231.7 parsecs (756 ly).
  2. ↑ According to the Bortle scale
  3. ↑ The distance in parsecs is equivalent to .
  1. ↑ Obtained with a right ascension of 07h 07m 0.77s and a declination of −40° 53′ 35.77″ [3] on this website.

References

  1. ↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 27 December 2024.
  2. 1 2 "VSX : Detail for NSV 17352". www.aavso.org. Retrieved 2024-04-19.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 "HD 54475". SIMBAD . Centre de données astronomiques de Strasbourg.
  4. 1 2 3 4 van Leeuwen, F. (2007-11-01). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. ISSN   0004-6361.
  5. 1 2 Ford, Dominic. "D-Pup (Star)". In-The-Sky.org. Retrieved 2024-04-15.
  6. 1 2 3 4 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011-01-01). "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 . ISSN   0035-8711.
  7. 1 2 Cruzalèbes, P.; Petrov, R. G.; Robbe-Dubois, S.; Varga, J.; Burtscher, L.; Allouche, F.; Berio, P.; Hofmann, K. -H.; Hron, J.; Jaffe, W.; Lagarde, S.; Lopez, B.; Matter, A.; Meilland, A.; Meisenheimer, K. (2019-12-01). "A catalogue of stellar diameters and fluxes for mid-infrared interferometry". Monthly Notices of the Royal Astronomical Society. 490 (3): 3158–3176. arXiv: 1910.00542 . Bibcode:2019MNRAS.490.3158C. doi: 10.1093/mnras/stz2803 . ISSN   0035-8711.
  8. 1 2 3 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012-11-01). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv: 1208.2037 . Bibcode:2012MNRAS.427..343M. doi: 10.1111/j.1365-2966.2012.21873.x . ISSN   0035-8711.

Sources

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