HD 180134

HD 180134
Location of HD 180134
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 19h 18m 09.78130s[1]
Declination −53° 23′ 13.5119″[1]
Apparent magnitude (V) 6.36±0.01[2]
Characteristics
Spectral type F7 V[3]
B−V color index +0.49[4]
Astrometry
Radial velocity (Rv)−22.5±0.3[5] km/s
Proper motion (μ) RA: +24.761 mas/yr[1]
Dec.: −81.714 mas/yr[1]
Parallax (π)21.9768 ± 0.0272 mas[1]
Distance148.4 ± 0.2 ly
(45.50 ± 0.06 pc)
Absolute magnitude (MV)+3.09[6]
Details
Mass1.32[7] M☉
Radius1.90±0.07[8] R☉
Luminosity4.93±0.01[1] L☉
Surface gravity (log g)4.07±0.04[9] cgs
Temperature6,230±55[8] K
Metallicity [Fe/H]−0.03±0.05[9] dex
Rotational velocity (v sin i)10±3[10] km/s
Age3.28±0.51[11] Gyr
Other designations
52 G. Telescopii[12], CD−53°8089, CPD−53°9513, GC 26573, HD 180134, HIP 94858, HR 7297, SAO 246017[13]
Database references
SIMBADdata

HD 180134 (HR 7297; 52 G. Telescopii) is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of 6.36,[2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively close at a distance of 148.4 light-years based on Gaia DR3 parallax measurements,[1] and it is drifting closer with a heliocentric radial velocity of −22.5 km/s.[5] At its current distance, HD 180134's brightness is diminished by two-tenths of a magnitude due to interstellar extinction[14] and it has an absolute magnitude of +3.09.[6]

HD 180134 has a stellar classification of F7 V,[3] indicating that it is an ordinary F-type main-sequence star that is currently generating energy via hydrogen fusion at its core. It has 1.32 times the mass of the Sun[7] and 1.9 times the radius of the Sun.[8] It radiates 4.93 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,230 K,[8] giving a whitish-yellow hue when viewed in the night sky. HD 180134 is slightly metal deficient with an iron abundance 93% that of the Sun or [Fe/H] = −0.03,[9] and it spins modestly with a projected rotational velocity of approximately 10 km/s.[10] At the age of 3.28 billion years,[11] it is 1.49 magnitudes above the zero age main sequence, meaning that it is evolved.[15]

In 2006, an infrared excess was detected around the star, which could indicate the presence of a circumstellar disk. The disk has a temperature less than 145 K, making it a cool disk; it has an angular separation greater than 0.19 arcseconds or a physical separation greater than 8.6 astronomical units.[16]

  1. ^ a b c d e f g Cite error: The named reference GaiaDR3 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 Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Johnson1966 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. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Lambert2004 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Masana2006 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Ramírez2012 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Balachandran1990 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Feltzing2001 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gould1879 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 Gontcharov2017 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Nordstrom2004 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Smith2006 was invoked but never defined (see the help page).