Astronomy:HD 61330
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Short description: Star in the constellation Puppis
  | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Puppis[1] |
| Right ascension | 07h 37m 22.10978s[2] |
| Declination | −34° 58′ 06.7109″[2] |
| Apparent magnitude (V) | 4.53[3] + 6.87[4] |
| Characteristics | |
| Evolutionary stage | main sequence[5] |
| Spectral type | B8IV[6] |
| U−B color index | −0.31[3] |
| B−V color index | −0.09[3] |
| Astrometry | |
| Radial velocity (Rv) | +24.00[7] km/s |
| Proper motion (μ) | RA: −14.21[2] mas/yr Dec.: +16.32[2] mas/yr |
| Parallax (π) | 9.05 ± 0.40[2] mas |
| Distance | 360 ± 20 ly (110 ± 5 pc) |
| Absolute magnitude (MV) | −0.68[1] |
| Orbit[8] | |
| Period (P) | 78.38±2.00 yr |
| Semi-major axis (a) | 0.322±0.003″ |
| Eccentricity (e) | 0.655±0.005 |
| Inclination (i) | 152.9±5.0° |
| Longitude of the node (Ω) | 74.7±5.0° |
| Periastron epoch (T) | 2016.754±0.500 |
| Argument of periastron (ω) (secondary) | 208.4±5.0° |
| Details | |
| f Pup A | |
| Mass | 3.32±0.15[8] M☉ |
| Luminosity | 270[5] L☉ |
| Temperature | 11,480[5] K |
| Rotational velocity (v sin i) | 56[5] km/s |
| f Pup C | |
| Mass | 2.11±0.10[8] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 61330 (f Puppis) is a binary star in the constellation Puppis. Its apparent magnitude is 4.53[3] and it is approximately 360 light years away based on parallax.[2]
The primary and secondary, with respective labels A and C, take 78 years to complete an orbit, with a considerable eccentricity of 0.655.[8] Another closer component, B, has been reported at 6.1 magnitude and 0.1" separation, but subsequent observers have repeatedly failed to confirm it.[9][10]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. Vizier catalog entry
- ↑ 3.0 3.1 3.2 3.3 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues 2237. Bibcode: 2002yCat.2237....0D.
- ↑ Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics 546: A69. doi:10.1051/0004-6361/201219774. Bibcode: 2012A&A...546A..69M. Vizier catalog entry
- ↑ 5.0 5.1 5.2 5.3 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z. Vizier catalog entry
- ↑ Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H 5050. Bibcode: 1995yCat.5050....0H.
- ↑ Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten 328 (9): 889. doi:10.1002/asna.200710776. Bibcode: 2007AN....328..889K.
- ↑ 8.0 8.1 8.2 8.3 Docobo, José Ángel; Campo, Pedro Pablo; Gómez, Jorge; Piccotti, Luca; Caballero-Valdes, Camila; Mendez, Rene A.; Costa, Edgardo (2026-07-31). "22 Orbits of Binaries Based on SOAR Speckle Observations: Systems with Early Type Components". The Astronomical Journal 172 (2): 133. doi:10.3847/1538-3881/ae877f. ISSN 0004-6256.
- ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal 122 (6): 3466. doi:10.1086/323920. Bibcode: 2001AJ....122.3466M. Vizier catalog entry
- ↑ Tokovinin, Andrei; Mason, Brian D.; Mendez, Rene A.; Costa, Edgardo (July 2024). "Speckle Interferometry at SOAR Telescope in 2023" (in en). The Astronomical Journal 168 (1): 28. doi:10.3847/1538-3881/ad4d56. ISSN 0004-6256. Bibcode: 2024AJ....168...28T.
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