Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Telescopium |
Right ascension | 19h 40m 18.71944s[1] |
Declination | −54° 25′ 04.0417″[1] |
Apparent magnitude (V) | 6.26[2] |
Characteristics | |
Spectral type | K0 III[3] |
B−V color index | +1.00[2] |
Astrometry | |
Radial velocity (Rv) | 14.8±0.4[4] km/s |
Proper motion (μ) | RA: +76.081 mas/yr[1] Dec.: −11.563 mas/yr[1] |
Parallax (π) | 7.7297 ± 0.0224 mas[1] |
Distance | 422 ± 1 ly (129.4 ± 0.4 pc) |
Absolute magnitude (MV) | +0.92[5] |
Details | |
Mass | 1.34±0.06[6] M☉ |
Radius | 12.6±0.6[7] R☉ |
Luminosity | 79.8+0.2 −0.1[1] L☉ |
Surface gravity (log g) | 2.63±0.11[6] cgs |
Temperature | 4,785±25[6] K |
Metallicity [Fe/H] | −0.42±0.02[6] dex |
Rotational velocity (v sin i) | <1[8] km/s |
Age | 414[1] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 185075, also known as HR 7459 or rarely 65 G. Telescopii, is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of 6.26,[2] placing it near the limit for naked eye visibility, even under ideal conditions. Gaia DR3 parallax measurements imply a distance of 422 light years[1] and it is currently receding with a heliocentric radial velocity of 14.8 km/s.[4] At its current distance, HD 185075's brightness is diminished by 0.23 magnitudes due to interstellar dust[11] and it has an absolute magnitude of +0.92.[5]
This is an evolved red giant with a stellar classification of K0 III.[3] It has 1.34 times the mass of the Sun[6] but it has expanded to 12.6 times the Sun's radius.[7] It radiates 79.8 times the luminosity of the Sun[1] from its enlarged photosphere at an effective temperature of 4,785 K,[6] giving it an orange hue. HD 185075 is particularly metal deficient with an iron abundance 38% that of the Sun's[6] ([Fe/H] = −0.42) and it spins too slowly for its projected rotational velocity to be measured accurately.[8]