TIC 279401253 c
TIC 279401253 c is a cold gas giant orbiting TIC 279401253 in the constellation Eridanus. It lies about 931 light-years from Earth and was discovered in 2023 using the transit method.
Is TIC 279401253 c in the Habitable Zone?
TIC 279401253 c orbits inside the inner edge of the habitable zone of TIC 279401253. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TIC 279401253: 0.830–1.948 AU (conservative: 1.052–1.847 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Orbit and Year Length
A year on TIC 279401253 c — one full orbit around TIC 279401253 — lasts 155.3 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.591 AU — comparable to the inner Solar System. Its orbit is mildly elliptical (eccentricity 0.25).
How Was TIC 279401253 c Discovered?
TIC 279401253 c was discovered in 2023 using the transit method, with observations from Multiple Observatories.
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is TIC 279401253 c?
TIC 279401253 c is 931.4 light-years (285.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1095. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 16,392,640 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. TIC 279401253 c scores 0.27, ranking #2,511 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TIC 279401253
TIC 279401253
- Surface temperature
- 5,951 K (Sun: 5,772 K)
- Mass
- 1.13 M☉
- Radius
- 1.06 R☉
- Luminosity
- 1.2500 L☉
- Age
- 1.2 billion years (Sun: 4.6)
The TIC 279401253 Planetary System
TIC 279401253 c is one of 2 known planets in the TIC 279401253 system. Its siblings:
- TIC 279401253 b (Cold Gas Giant)
TIC 279401253 c — Complete Data
| Mass (best estimate) | 2,548.98 Earth masses |
|---|---|
| Orbital period | 155.30 days |
| Orbital distance | 0.591 AU |
| Eccentricity | 0.254 |
| Earth Similarity Index | 0.27 |
| Distance from Earth | 931.4 light-years (285.6 parsecs) |
| Constellation | Eridanus |
| Discovery method | Transit |
| Discovery facility | Multiple Observatories |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2023-03-15. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TIC 279401253 c
Is TIC 279401253 c habitable?
No — TIC 279401253 c orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TIC 279401253 c?
TIC 279401253 c is about 931 light-years from Earth in the constellation Eridanus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 16,392,640 years to get there.
How long is a year on TIC 279401253 c?
One orbit around TIC 279401253 takes 155.3 Earth days.
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