TOI 178
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- Constellation
- Sculptor
- Distance from Earth
- 63
- Radius
- 0.651
- Mass
- 0.65
- Image
- Artist impression of the TOI-178 planetary system ESA22423126.jpg
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- catalog code
- RAVE J002912.3-302713
- luminosity
- 0.13807027
- effective temperature
- 4316
- apparent magnitude
- 13.05
- Commons category
- TOI-178
- right ascension
- 7.30126216402
- declination
- -30.45374079362001
- parallax
- 16.75
- right ascension component of proper motion
- 149.953
- declination component of proper motion
- -87.253
- radial velocity
- 57.53
- epoch
- J2000.0
- surface gravity
- 93000
- metallicity
- -0.195
- age estimated by a dating method
- 7.1
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Encyclopedic overview
3 sectionsContents
- Planetary system and orbital resonance
- See also
- References
TOI-178 is a planetary system in the constellation Sculptor around which six planets have been observed, at least five of which orbit in a chain of Laplace resonances, which constitute one of the longest chains yet discovered in a system of planets. The system also has unusual variations in the densities among the planets.
The system is 205 light-years away, which is relatively close, implying that such systems may be relatively common. The brightness of the star, TOI-178, facilitates followup observations, which make it an ideal system in which to expand our understanding of planet formation and evolution.
Excerpted from Wikipedia’s “TOI 178” article, available under the CC BY-SA 4.0 licence.