Back HD 23079 AST HD 23079 German Tupi (estrella) Spanish اچدی ۲۳۰۷۹ Persian HD 23079 Japanese Tupi (estrela) Portuguese HD 23079 Russian HD 23079 Slovak HD 23079 Swedish HD 23079 Chinese
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Reticulum |
| Right ascension | 03h 39m 43.0961s[1] |
| Declination | −52° 54′ 57.0161″[1] |
| Apparent magnitude (V) | 7.12[2] |
| Characteristics | |
| Spectral type | F9.5V[3] |
| B−V color index | 0.583±0.009[2] |
| Astrometry | |
| Radial velocity (Rv) | +0.648±0.0004[1] km/s |
| Proper motion (μ) | RA: −192.877±0.060[1] mas/yr Dec.: −92.103±0.062[1] mas/yr |
| Parallax (π) | 29.8583 ± 0.0309 mas[1] |
| Distance | 109.2 ± 0.1 ly (33.49 ± 0.03 pc) |
| Absolute magnitude (MV) | 4.47[2] |
| Details[4] | |
| Mass | 1.01±0.02 M☉ |
| Radius | 1.08±0.02 R☉ |
| Luminosity | 1.372±0.005 L☉ |
| Surface gravity (log g) | 4.37±0.04 cgs |
| Temperature | 6,003±36 K |
| Metallicity [Fe/H] | −0.12±0.01[2] dex |
| Rotational velocity (v sin i) | 1.281±0.160[5] km/s |
| Age | 5.1±1.0 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 23079 is a star in the southern constellation of Reticulum. Since the star has an apparent visual magnitude of 7.12,[2] it is not visible to the naked eye, but at least in binoculars it should be easily visible. Parallax measurements give a distance estimate of 109 light years from the Sun. it is slowly drifting further away with a radial velocity of +0.65 km/s.[1]
This object is an inactive F-type main sequence star with a stellar classification of F9.5V;[3] in between F8 and G0. This indicates it is generating energy through core hydrogen fusion. The star is similar to the Sun, but is slightly hotter and more massive.[7] It is about 5.1 billion years old[4] and it is spinning slowly with a projected rotational velocity of 1.3 km/s.[5] The metallicity of this star is below solar, meaning the abundance of elements other than hydrogen and helium is lower than in the Sun.[2]
The star HD 23079 is named Tupi. The name was selected in the NameExoWorlds campaigns by Brazil during the 100th anniversary of the IAU. The star is named after the Tupi people, an indigenous group.[8][9]
- ^ a b c d e f g Cite error: The named reference
Gaia DR2was invoked but never defined (see the help page). - ^ a b c d e f Cite error: The named reference
Anderson2012was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Gray2006was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Bonfanti2015was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Soto2018was invoked but never defined (see the help page). - ^ Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Eberle2011was invoked but never defined (see the help page). - ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.