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β Pavonis

Location of β Pavonis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Pavo
Right ascension	20 44 57.49399
Declination	−66° 12′ 11.5708″
Apparent magnitude (V)	3.42
Characteristics
Spectral type	A5 IV or A7 III
U−B color index	+0.12
B−V color index	+0.16
Astrometry
Radial velocity (Rv)	+3.7±0.5 km/s
Proper motion (μ)	RA: −42.67 mas/yr Dec.: +9.94 mas/yr
Parallax (π)	24.14 ± 0.16 mas
Distance	135.1 ± 0.9 ly (41.4 ± 0.3 pc)
Absolute magnitude (MV)	+0.33
Details
Mass	2.51 M☉
Radius	2.3 R☉
Luminosity	66 L☉
Surface gravity (log g)	3.84 cgs
Temperature	8,184±278 K
Rotational velocity (v sin i)	75 km/s
Age	305 Myr
Other designations
β Pav, CPD−66° 3501, FK5 775, GC 28862, HD 197051, HIP 102395, HR 7913, SAO 254862
Database references
SIMBAD	data

Beta Pavonis, Latinised from β Pavonis, is a single, white-hued star in the southern constellation of Pavo. It can be seen with the naked eye, having an apparent visual magnitude of 3.42. Based upon an annual parallax shift of 24.14 mas as seen from Earth, it is located 135 light-years from the Sun. It is moving away from the Sun with a radial velocity of +4 km/s. Beta Pavonis is a member of the Ursa Major Moving Group, a set of stars that share a similar motion through space.

Zorec and Royer (2012) list a stellar classification for this star of A5 IV, indicating it is an evolving subgiant star that has consumed the hydrogen at its core and has begun to expand onto the red giant branch. However, Houk (1979) listed a more evolved class of A7 III, suggesting it is already a giant star. It has about 2.3 times the Sun's radius and 2.51 times the mass of the Sun. At the estimated age of 305 million years, the star still has a relatively high rate of spin, having a projected rotational velocity of 75 km/s. Beta Pavonis is radiating 66 times the Sun's luminosity from its photosphere at an effective temperature of about 8,184 K.

References

1. ^ Van Leeuwen, F. (2007). "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. S2CID 18759600. Vizier catalog entry Archived 2021-05-23 at the Wayback Machine
2. ^ 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. S2CID 119257644. Vizier catalog entry Archived 2016-09-20 at the Wayback Machine
3. ^ Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry Archived 2016-09-20 at the Wayback Machine
4. ^ Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
5. ^ Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry Archived 2016-09-20 at the Wayback Machine
6. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
7. ^ Pasinetti Fracassini, L. E.; et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics. 367 (Third ed.): 521–524. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
8. ^ David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. S2CID 33401607. Vizier catalog entry Archived 2022-04-18 at the Wayback Machine
9. Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
10. Chupina, N. V.; et al. (June 2006). "Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars". Astronomy and Astrophysics. 451 (3): 909–916. Bibcode:2006A&A...451..909C. doi:10.1051/0004-6361:20054009.

v t e Constellation of Pavo
List of stars in Pavo Pavo in Chinese astronomy
Stars	Bayer α (Peacock) β γ δ ε ζ η θ ι κ λ μ μ ν ξ ο π ρ σ τ υ φ φ ω Variable R V X Y SX AR BD KZ MW NU NZ V346 V347 HR 6586 6624 6634 6740 6760 6796 6805 6808 6828 6899 6908 6939 6996 7004 7012 7015 7022 7027 7111 7130 7161 7221 7278 7320 7383 7434 7435 7455 7498 7513 7527 7531 7558 7579 7587 7588 7644 7663 7691 7707 7732 7838 7872 7959 8019 8061 8073 8081 8125 8159 HD 161475 162521 164427 175007 175167 176522 179419 181433 186302 190984 192887 195190 195772 196050 Other Gliese 693 SCR 1845−6357 SCR 1826−6542
Exoplanets HD 175167 b HD 181433 b c d HD 190984 b HD 196050 b
Galaxies	NGC 6744 6753 6782 6810 6872 7020 7032 7059 Other Bedin I IC 4662 IC 4687 IC 4710 IC 4970 IC 5052 IRAS 19254-7245
Galaxy clusters NGC 6752
Category

• A-type subgiants
• A-type giants
• Ursa Major moving group
• Pavo (constellation)
• Bayer objects
• Durchmusterung objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects