Mu Telescopii

Mu Telescopii (μ Telescopii) is a yellow-white hued star in the southern constellation of Telescopium. With an apparent visual magnitude of +6.30,[2] it is near the limit of stars that can be viewed with the naked eye. Based upon an annual parallax shift of 20.18 mas as seen from Earth,[1] it is located around 162 light years from the Sun.

Mu Telescopii

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Telescopium
Right ascension	19^h 48^m 01.19882^s[1]
Declination	−56° 21′ 45.3958″[1]
Apparent magnitude (V)	+6.30[2]
Characteristics
Spectral type	F5 V[3]
B−V color index	+0.45[2]
Astrometry
Radial velocity (Rv)	+8.7±0.4[4] km/s
Proper motion (μ)	RA: +92.25[1] mas/yr Dec.: −136.72[1] mas/yr
Parallax (π)	20.18 ± 0.30[1] mas
Distance	162 ± 2 ly (49.6 ± 0.7 pc)
Details
Mass	1.28[5] M☉
Luminosity	2.9[6] L☉
Surface gravity (log g)	4.27[3] cgs
Temperature	6,542[3] K
Metallicity [Fe/H]	−0.07[3] dex
Age	2.264[5] Gyr
Other designations
μ Tel, CPD−55° 8188, HD 183028, HIP 95932, HR 7393, SAO 246131[7]
Database references
SIMBAD	data

This is an F-type main sequence star with a stellar classification of F5 V.[3] It is chromospherically active.[3] The star is about 2.3[5] billion years old with 1.3[5] times the mass of the Sun. It is radiating three[6] times the solar luminosity from its photosphere at an effective temperature of 6,542 K.[3]

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.
2. Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
3. Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637.
4. Casagrande, L.; et al. (2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy & Astrophysics, 530 (A138): 21, arXiv:1103.4651, Bibcode:2011A&A...530A.138C, doi:10.1051/0004-6361/201016276.
5. 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.
6. McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x.
7. "mu. Tel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-01.