Astronomy:HIP 67522
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Short description: G-type main-sequence star
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 50m 06.280s[2] |
| Declination | −40° 50′ 08.88″[2] |
| Apparent magnitude (V) | 9.80±0.03[3] |
| Characteristics | |
| Evolutionary stage | Main sequence[4] |
| Spectral type | G0V[5] |
| Astrometry | |
| Radial velocity (Rv) | 8.26±2.19[2] km/s |
| Proper motion (μ) | RA: −28.907[2] mas/yr Dec.: −22.248[2] mas/yr |
| Parallax (π) | 8.0170 ± 0.0182[2] mas |
| Distance | 406.8 ± 0.9 ly (124.7 ± 0.3 pc) |
| Details[4] | |
| Mass | 1.22±0.05 M☉ |
| Radius | 1.38±0.06 R☉ |
| Luminosity | 1.75±0.09 L☉ |
| Temperature | 5,675±75 K |
| Rotation | 1.418±0.016 days |
| Rotational velocity (v sin i) | 54.2±0.7 km/s |
| Age | 17±2 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HIP 67522 is a G-type main sequence star located at a distance of 407 light-years (125 parsecs) away in the constellation of Centaurus. Its visual magnitude of 9.8 makes it much too faint to be seen by the unaided eye. It is slightly larger than the Sun (1.38 R☉) but cooler (5,675 K versus 5,772 K for the Sun). It is also very young being only around 17 million years old. It has two exoplanets orbiting it.[4]
Planetary system
Two exoplanets, HIP 67522 b and HIP 67522 c, are known to orbit the star and transit its face as seen from Earth. Their orbital periods are much less than Mercury's 88 days around the Sun, being 6.96 days for b and 14.33 days for c.[7]
Detections of frequent flaring of the star during the transit phase of the innermost planet (HIP 67522b) suggest that interacts with the stars magnetic field producing the high rate of flares.[8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.0434±0.0031 MJ | 0.0748+0.0016 −0.0018 |
6.9594731(22) | 0.064+0.187 −0.049 |
89.88+1.08 −0.93° |
0.891+0.021 −0.02 RJ |
| c | — | 0.1228+0.0042 −0.0053 |
14.334892(12) | 0.077+0.195 −0.056 |
89.2+1.75 −0.64° |
0.708+0.031 −0.032 RJ |
References
- ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355. Bibcode: 2000A&A...355L..27H.
- ↑ 4.0 4.1 4.2 Rizzuto, Aaron C. (22 June 2020). "TESS Hunt for Young and Maturing Exoplanets (THYME). II. A 17 Myr Old Transiting Hot Jupiter in the Sco-Cen Association". The Astronomical Journal 160 (1): 33. doi:10.3847/1538-3881/ab94b7. Bibcode: 2020AJ....160...33R.
- ↑ Torres, C. A. O.; Quast, G. R.; Da Silva, L.; de la Reza, R.; Melo, C. H. F.; Sterzik, M. (2006). "Search for associations containing young stars (SACY). I. Sample and searching method". Astronomy and Astrophysics 460 (3): 695. doi:10.1051/0004-6361:20065602. Bibcode: 2006A&A...460..695T.
- ↑ "HIP 67522". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+67522.
- ↑ "HIP 67522 Overview". https://exoplanetarchive.ipac.caltech.edu/overview/HIP%2067522.
- ↑ Ilin, Ekaterina; Vedantham, Harish K.; Poppenhäger, Katja; Bloot, Sanne; Callingham, Joseph R.; Brandeker, Alexis; Chakraborty, Hritam (2025-07-02). "Close-in planet induces flares on its host star" (in en). Nature: 1–4. doi:10.1038/s41586-025-09236-z. ISSN 1476-4687. PMID 40604272. https://www.nature.com/articles/s41586-025-09236-z.
- ↑ Barber, Madyson G. et al. (September 2024). "TESS Investigation—Demographics of Young Exoplanets (TI-DYE). II. A Second Giant Planet in the 17 Myr System HIP 67522". The Astrophysical Journal Letters 973 (1): L30. doi:10.3847/2041-8213/ad77d9. Bibcode: 2024ApJ...973L..30B.
- ↑ Thao, Pa Chia; Mann, Andrew W.; Feinstein, Adina D.; Gao, Peter; Thorngren, Daniel; Rotman, Yoav; Welbanks, Luis; Brown, Alexander et al. (2024-12-01). "The Featherweight Giant: Unraveling the Atmosphere of a 17 Myr Planet with JWST". The Astronomical Journal 168 (6): 297. doi:10.3847/1538-3881/ad81d7. ISSN 0004-6256. Bibcode: 2024AJ....168..297T.
External links
- Exoplanet Triggers Stellar Flares and Hastens Its Demise, 5 August 2025. Eos (magazine): https://doi.org/10.1029/2025EO250284
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