Mu Telescopii

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]
Distance117.9 ± 0.1 ly
(36.14 ± 0.04 pc)
Absolute magnitude (MV)+3.61[6]
Details
Mass1.28[7] M☉
Radius1.40+0.07
−0.05[8] R☉
Luminosity3.22±0.01[9] L☉
Surface gravity (log g)4.3±0.1[8] cgs
Temperature6,570±136[10] K
Metallicity [Fe/H]−0.06[11] dex
Rotational velocity (v sin i)6.9±0.5[12] km/s
Age2.12[11] Gyr
Other designations
μ Tel, 61 G. Telescopii, CPD−55° 8188, HD 183028, HIP 95932, HR 7393, SAO 246131[13][14]
Database references
SIMBADdata

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]

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]

  1. ^ a b c d e Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Stoy1968 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference David2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  11. ^ a b c d Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Groot1996 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Gáspár2016 was invoked but never defined (see the help page).