TOI-1260
| Observation data Epoch RA2000 Equinox RA2000 | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 10h 28m 35.025s[1] |
| Declination | +65° 51′ 16.38″[1] |
| Apparent magnitude (V) | 11.875[2] |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | K6 V[2] |
| Astrometry | |
| Radial velocity (Rv) | −16.70±0.40[1] km/s |
| Proper motion (μ) | RA: −177.340 mas/yr[1] Dec.: −81.693 mas/yr[1] |
| Parallax (π) | 13.6226±0.0147 mas[1] |
| Distance | 239.4 ± 0.3 ly (73.41 ± 0.08 pc) |
| Details[3] | |
| Mass | 0.679+0.095 −0.057 M☉ |
| Radius | 0.672±0.010 R☉ |
| Luminosity | 0.129±0.004 L☉ |
| Surface gravity (log g) | 4.57±0.05 cgs |
| Temperature | 4227±85 K |
| Metallicity [Fe/H] | −0.10±0.07 dex |
| Rotation | 30.63±3.81 d |
| Rotational velocity (v sin i) | 1.5±0.7 km/s |
| Age | 6.7+5.1 −5.2 Gyr |
| Other designations | |
| LP 62-217, NLTT 24401, TOI-1260, TIC 355867695, 2MASS J10283500+6551163[4] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
TOI-1260 is a single high-proper-motion K-type main-sequence star in the constellation of Ursa Major. Its surface temperature is 4227±85 K. TOI-1260 has an orange hue and is too faint to be seen with the naked eye, or a small telescope.[5] It has an apparent visual magnitude of 11.922±0.034. Based upon parallax measurements, it is located 239 light-years from the Sun. The object is drifting towards the Sun with a radial velocity of -16.7 km/s.[1]
Planetary system
TOI-1260 has three known planets, two discovered in 2021[2] and one in 2022 by the transit method.[6]
None of these three planets orbit in the habitable zone. All are sub-Neptunes, with masses and radii indicating that they are partly composed of gas.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination (°) |
Radius |
|---|---|---|---|---|---|---|
| b | 8.56±1.54 M🜨 | 0.0367±0.0011 | 3.127463±0.000005 | 0 | 89.03±0.61 | 2.41±0.05 R🜨 |
| c | 13.20±4.23 M🜨 | 0.0657±0.0020 | 7.493134±0.000020 | 0 | 87.97±0.11 | 2.76±0.07 R🜨 |
| d | 11.84±7.79 M🜨 | 0.1116±0.0033 | 16.608164±0.000083 | 0 | 89.14±0.10 | 3.12±0.08 R🜨 |
See also
References
- ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c Georgieva, I. Y.; Persson, C. M.; et al. (August 2021). "Hot planets around cool stars - two short-period mini-Neptunes transiting the late K-dwarf TOI-1260". Monthly Notices of the Royal Astronomical Society. 505 (4): 4684–4701. arXiv:2104.05653. Bibcode:2021MNRAS.505.4684G. doi:10.1093/mnras/stab1464.
- ^ a b c Lam, K W F; Cabrera, J; Hooton, M J; Alibert, Y; Bonfanti, A; Beck, M; Deline, A; Florén, H-G; Simon, A E; Fossati, L; Persson, C M; Fridlund, M; Salmon, S; Hoyer, S; Osborn, H P (2023-02-11). "Discovery of TOI-1260d and the characterization of the multiplanet system". Monthly Notices of the Royal Astronomical Society. 519 (1): 1437–1451. arXiv:2212.04307. Bibcode:2023MNRAS.519.1437L. doi:10.1093/mnras/stac3639. ISSN 0035-8711.
- ^ "LP 62-217". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-04-22.
- ^ "★ TOI 1260". Stellar Catalog. Retrieved 2025-04-21.
- ^ "TOI-1260 d - NASA Science". 2022-12-23. Retrieved 2025-04-21.
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