 A light curve for HD 54475, plotted from TESS data | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07 07 07 |
| Declination | −40° 53′ 35.77″ |
| Apparent magnitude (V) | 5.783±0.009 |
| Characteristics | |
| Evolutionary stage | B-type main-sequence star |
| Spectral type | B3V |
| Variable type | Pulsating variable |
| Astrometry | |
| Radial velocity (Rv) | 6±3.2 km/s |
| Proper motion (μ) | RA: −10.554±0.069 mas/yr Dec.: 11.163±0.0689 mas/yr |
| Parallax (π) | 4.2 ± 0.2 mas |
| Distance | 776.19 ly (238.1 pc) |
| Absolute magnitude (MV) | -0.95 |
| Details | |
| Mass | 6.2±0.1 M☉ |
| Radius | 3.544 R☉ |
| Luminosity | 689.67 L☉ |
| Temperature | 15,723 K |
| Age | 15.8±0.3 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. It has an apparent magnitude of 5.783, which is enough to be visible to the unaided eye. The distance to D Puppis, based on a parallax of 4.2±0.2 mas from the Hipparcos satellite, is 776 light-years.
Characteristics
This is a B-type main-sequence star with a spectral type of B3V. It has 6.2 times the mass of the Sun and 3.54 times the Sun's radius. It radiates 690 times the solar luminosity from its outer atmosphere at a temperature of 15,723 K. Its age is estimated to be of about 15 million years.
The distance to D Puppis is about 776 light-years, based on a parallax of 4.2±0.2 mas from the Hipparcos satellite.
It is mentioned to be a pulsating variable star on SIMBAD, but the American Association of Variable Star Observers does not mention any variable-star type for the star.
Notes
- Calculated using an angular diameter of 0.1422608 mas and an adopted distance of 231.7 parsecs (756 ly).
- According to the Bortle scale
- The distance in parsecs is equivalent to .
.
- Obtained with a right ascension of 07 07 0.77 and a declination of −40° 53′ 35.77″ on this website.
References
- "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 27 December 2024.
- ^ "VSX : Detail for NSV 17352". www.aavso.org. Retrieved 2024-04-19.
- ^ "HD 54475". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ 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.
- ^ Ford, Dominic. "D-Pup (Star)". In-The-Sky.org. Retrieved 2024-04-15.
- ^ 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.
- ^ 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.
- ^ 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
- Stift, Martin (19 April 1979). "Light Variations of HD 54475". Information Bulletin on Variable Stars. 1586 (1586). Konkoly Observatory, Budapest: Commission 27 of the IAU: 1. Bibcode:1979IBVS.1586....1S.