Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Telescopium |
Right ascension | 18h 11m 13.7612s[1] |
Declination | −45° 57′ 15.8824″[1] |
Apparent magnitude (V) | 4.50±0.01[2] |
Characteristics | |
Spectral type | K0 III[3] |
U−B color index | +0.78[4] |
B−V color index | +1.01[4] |
Astrometry | |
Radial velocity (Rv) | −26.3±0.8[5] km/s |
Proper motion (μ) | RA: −18.837 mas/yr[1] Dec.: −38.102 mas/yr[1] |
Parallax (π) | 8.0405 ± 0.321 mas[1] |
Distance | 410 ± 20 ly (124 ± 5 pc) |
Absolute magnitude (MV) | −1.00[6] |
Details | |
Luminosity | 293[7] L☉ |
Surface gravity (log g) | 2.32±0.12[8] cgs |
Temperature | 4,996±42[8] K |
Metallicity [Fe/H] | −0.07±0.04[8] dex |
Other designations | |
Database references | |
SIMBAD | data |
Epsilon Telescopii, Latinized from ε Telescopii, is a solitary,[10] orange-hued star in the southern constellation of Telescopium. It is visible to the naked eye with an apparent visual magnitude of +4.53.[4] Based upon an annual parallax shift of 7.80 mas as seen from Earth,[1] it is located roughly 410 light years from the Sun, give or take 20 light years.
This an evolved K-type giant with a stellar classification of K0 III.[3] It displays an infrared excess, suggesting the presence of an orbiting disk of dust.[11] The star is radiating 293[7] times the Sun's luminosity from its photosphere at an effective temperature of 4,996 K.[8] It has a 13th magnitude optical companion at an angular separation of 16.30 arcseconds along a position angle of 233°, as of 2000.[12]
EDR3
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