Delta Pictoris
Delta Pictoris (δ Pic) is a class B3III[3] (blue giant) star in the constellation Pictor. Its apparent magnitude is 4.72[2] and it is approximately 1300 light years away based on parallax.[1]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pictor |
| Right ascension | 06h 10m 17.90808s[1] |
| Declination | −54° 58′ 07.1134″[1] |
| Apparent magnitude (V) | 4.72[2] |
| Characteristics | |
| Spectral type | B3III+O9V[3] |
| U−B color index | −1.00[4] |
| B−V color index | −0.25[4] |
| Variable type | β Lyr[5] |
| Astrometry | |
| Radial velocity (Rv) | +30.60[6] km/s |
| Proper motion (μ) | RA: −4.90[1] mas/yr Dec.: +7.41[1] mas/yr |
| Parallax (π) | 2.51 ± 0.15[1] mas |
| Distance | 1,300 ± 80 ly (400 ± 20 pc) |
| Absolute magnitude (MV) | −3.27[2] |
| Details | |
| Mass | 7.9[7] M☉ |
| Luminosity | 6179[8] L☉ |
| Temperature | 17,100[8] K |
| Rotational velocity (v sin i) | 221[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
It is a β Lyrae variable, a type of eclipsing binary, which ranges in brightness from 4.90 to 4.65 magnitude with a period of 1.67 days.[5]
References
- Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. 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.
- Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
- 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....1.2025S.
- Evans, D. S. (1967). "The Revision of the General Catalogue of Radial Velocities". Determination of Radial Velocities and their Applications. 30: 57. Bibcode:1967IAUS...30...57E.
- 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:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. Vizier catalog entry
- Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. Vizier catalog entry
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