Mu Telescopii

Mu Telescopii, Latinized from μ Telescopii is a solitary star in the southern constellation Telescopium. It has an apparent visual magnitude of 6.28,^[2] placing it near the limit of naked eye visibility. The object is relatively close at a distance of 118 light years^[1] but is receding with a heliocentric radial velocity of 8.6 km/s.^[5]

μ Telescopii

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Telescopium
Right ascension	19h 30m 34.6118s[1]
Declination	−55° 06′ 36.1901″[1]
Apparent magnitude (V)	6.28±0.01[2]
Characteristics
Spectral type	F5 V[3]
B−V color index	+0.45[4]
Astrometry
Radial velocity (Rv)	8.6±0.3[5] km/s
Proper motion (μ)	RA: +38.548 mas/yr[1] Dec.: −11.540 mas/yr[1]
Parallax (π)	27.6727±0.0284 mas[1]
Distance	117.9 ± 0.1 ly (36.14 ± 0.04 pc)
Absolute magnitude (MV)	+3.61[6]
Details
Mass	1.28[7] M☉
Radius	1.40+0.07 −0.05[8] R☉
Luminosity	3.22±0.01[9] L☉
Surface gravity (log g)	4.3±0.1[8] cgs
Temperature	6,570±136[10] K
Metallicity [Fe/H]	−0.06[11] dex
Rotational velocity (v sin i)	6.9±0.5[12] km/s
Age	2.12[11] Gyr
Other designations
μ Tel, 61 G. Telescopii, CPD−55° 8188, HD 183028, HIP 95932, HR 7393, SAO 246131[13][14]
Database references
SIMBAD	data

Mu Telescopii has a stellar classification of F5 V,^[3] indicating that it is an ordinary F-type main sequence star. It has been noted to be chromospherically active.^[3] The star is 2.12 billion years^[11] old with a current mass of 1.28 M_☉,^[7] and has a diameter 1.4 times that of the Sun It is radiating 3.22 times the luminosity of the Sun^[9] from its photosphere at an effective temperature of 6,570 K,^[10] giving a yellow white hue. Mu Telescopii is slightly metal deficient with an iron abundance 87% that of the Sun^[11] and spins with a projected rotational velocity of 6.9 km/s.^[12]

It has been observed for infrared excess suggesting the presence of a debris disk but so far, none has been found.^[15]