Gliese 146
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Horologium |
| Right ascension | 03h 35m 00.93995s[1] |
| Declination | −48° 25′ 08.9046″[1] |
| Apparent magnitude (V) | 8.64[2] |
| Characteristics | |
| Evolutionary stage | Main Sequence[3] |
| Spectral type | K6.5V[3] |
| U−B color index | +1.24[2] |
| B−V color index | +1.30[2] |
| Variable type | suspected, range 8.57 to 8.7 mag, NSV 1203[4][5] |
| Astrometry | |
| Radial velocity (Rv) | +19.5[6] km/s |
| Proper motion (μ) | RA: 404.71[1] mas/yr Dec.: 308.13[1] mas/yr |
| Parallax (π) | 73.520 ± 0.016 mas[7] |
| Distance | 44.363 ± 0.010 ly (13.602 ± 0.003 pc) |
| Details[7] | |
| Mass | 0.684±0.013 M☉ |
| Radius | 0.674±0.020 R☉ |
| Luminosity | 0.121[8] L☉ |
| Surface gravity (log g) | 4.69±0.05 cgs |
| Temperature | 4385±21 K |
| Metallicity [Fe/H] | -0.08±0.02 dex |
| Rotation | 34.99+0.58 −0.53 |
| Age | 970[9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
Gliese 146 is a K5V class star located in the constellation Horologium. At 44.4 light years, GJ 146 has an apparent magnitude of +8.57. Gliese 146 is also known as HD 22496, HIP 16711, SAO-216392, and LHS 1563.[10]
Its speed relative to the sun is 38.1 km/second, and its galactic orbit ranges between 20,800 and 25,400 light years from the center of the Galaxy, placing it within a thin disk.[7] It is a suspected variable star.[4][5] It belongs to the Hyades supercluster of stars[11] It is one of 155 K-type stars within 50 light years.[10]
Gliese 146 is a flare star, with average flare frequency 0.23 flares per day.[12]
Planetary system
It is one of 500 stars selected in 2009 for the SCUBA-2 All Sky Survey for stars with debris disks.[13] The debris disk was not detected by any survey as in 2015 though.[8]
In 2021, a Sub-Neptune planet HD 22496b was discovered utilizing a Doppler spectroscopy method.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| HD 22496b | >5.57+0.73 −0.68, <16 M🜨 |
0.0510+0.0024 −0.0026 |
5.09071 ± 0.00026 | 0 | — | — |
See also
References
- ^ a b c d van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.
- ^ a b Gray, R.O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992.
- ^ a b c "HD 22496 -- High proper-motion Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2016-06-21
- ^ a b VizieR Detailed Page for NSV=1203
- ^ Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick (eds.), "The Revision of the General Catalogue of Radial Velocities", Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, vol. 30, University of Toronto: International Astronomical Union, p. 57, Bibcode:1967IAUS...30...57E.
- ^ a b c d e HD 22496 b: the first ESPRESSO standalone planet discovery, 2021, arXiv:2109.00226
- ^ a b DOES THE PRESENCE OF PLANETS AFFECT THE FREQUENCY AND PROPERTIES OF EXTRASOLAR KUIPER BELTS? RESULTS FROM THE HERSCHEL DEBRIS AND DUNES SURVEYS, 2015, arXiv:1501.03813
- ^ Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey", The Astronomical Journal, 143 (6): 135, arXiv:1203.1966, Bibcode:2012AJ....143..135V, doi:10.1088/0004-6256/143/6/135, S2CID 118539505.
- ^ a b K stars within 100 light-years - SolStation.com
- ^ siblings of HD 22496 (SIMBAD)
- ^ A census of coronal mass ejections on solar-like stars, 2020, arXiv:2002.04430
- ^ N. M. Phillips, J. S. Greaves, W. R. F. Dent, B. C. Matthews, W. S. Holland, M. C. Wyatt, B. Sibthorpe Target selection for the SUNS and DEBRIS surveys for debris discs in the solar neighbourhood
External links
- Ids - Bibliography - Siblings - Image - B&W Image.
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