2MASS J0249-0557 c
2MASS J0249-0557 c is a hot Jupiter orbiting the M6 V star 2MASS J0249-0557 A in the constellation Eridanus. It lies about 216 light-years from Earth and was discovered in 2018 using the imaging method.
How Big Is 2MASS J0249-0557 c?
2MASS J0249-0557 c has a radius of 17.37 times that of Earth, or 1.55 times the radius of Jupiter. Its mass is 3,617 times that of Earth.
Is 2MASS J0249-0557 c in the Habitable Zone?
The position of 2MASS J0249-0557 c relative to the habitable zone of 2MASS J0249-0557 A cannot be precisely determined from the available orbital data.
Temperature on 2MASS J0249-0557 c
The equilibrium temperature of 2MASS J0249-0557 c is about 1,723 K (1,450 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
How Was 2MASS J0249-0557 c Discovered?
2MASS J0249-0557 c was discovered in 2018 using the imaging method, with observations from Mauna Kea Observatory.
Direct imaging captures actual pictures of a planet by blocking out the overwhelming glare of its host star. It works best for young, hot, massive planets on wide orbits.
How Far Away Is 2MASS J0249-0557 c?
2MASS J0249-0557 c is 215.5 light-years (66.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1811. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,792,800 years to make the journey.
The Host Star: 2MASS J0249-0557 A
2MASS J0249-0557 c is a circumbinary planet — it orbits around two stars at once, like Tatooine in Star Wars.
2MASS J0249-0557 A
- Spectral type
- M6 V
- Mass
- 0.05 M☉
- Luminosity
- 0.0026 L☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
2MASS J0249-0557 c is the only planet known to orbit 2MASS J0249-0557 A so far.
2MASS J0249-0557 c — Complete Data
| Radius | 17.374 Earth radii (1.550 Jupiter radii) |
|---|---|
| Mass | 3,616.89 Earth masses (11.380 Jupiter masses) |
| Equilibrium temperature | 1,723 K (1,450 °C) |
| Distance from Earth | 215.5 light-years (66.1 parsecs) |
| Constellation | Eridanus |
| Discovery method | Imaging |
| Discovery facility | Mauna Kea Observatory |
| Discovery year | 2018 |
Data: NASA Exoplanet Archive, last updated 2026-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About 2MASS J0249-0557 c
Is 2MASS J0249-0557 c habitable?
2MASS J0249-0557 c is not known to orbit within the habitable zone of 2MASS J0249-0557 A, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is 2MASS J0249-0557 c?
2MASS J0249-0557 c is about 216 light-years from Earth in the constellation Eridanus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,792,800 years to get there.
How big is 2MASS J0249-0557 c compared to Earth?
2MASS J0249-0557 c has 17.37 times the radius of Earth and about 3,617 times its mass.
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