2M0437 b
2M0437 b is a hot Jupiter orbiting the M V star 2MASS J04372171+2651014 in the constellation Taurus. It lies about 419 light-years from Earth and was discovered in 2021 using the imaging method.
Is 2M0437 b in the Habitable Zone?
2M0437 b orbits beyond the outer edge of the habitable zone of 2MASS J04372171+2651014. At that distance, any surface water would almost certainly be frozen.
Habitable zone of 2MASS J04372171+2651014: 0.215–0.569 AU (conservative: 0.273–0.540 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 ›
Temperature on 2M0437 b
The equilibrium temperature of 2M0437 b is about 1,450 K (1,177 °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.
Orbit and Year Length
2M0437 b orbits at an average distance of 118.000 AU.
How Was 2M0437 b Discovered?
2M0437 b was discovered in 2021 using the imaging method, with observations from Subaru Telescope.
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 2M0437 b?
2M0437 b is 419.1 light-years (128.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1607. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 7,376,160 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. 2M0437 b scores 0.07, ranking #4,970 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: 2MASS J04372171+2651014
2MASS J04372171+2651014
- Spectral type
- M V
- Surface temperature
- 3,100 K (Sun: 5,772 K)
- Mass
- 0.17 M☉
- Radius
- 0.84 R☉
- Luminosity
- 0.0686 L☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
2M0437 b is the only planet known to orbit 2MASS J04372171+2651014 so far.
2M0437 b — Complete Data
| Mass | 1,271.31 Earth masses (4.000 Jupiter masses) |
|---|---|
| Orbital distance | 118.000 AU |
| Equilibrium temperature | 1,450 K (1,177 °C) |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 419.1 light-years (128.5 parsecs) |
| Constellation | Taurus |
| Discovery method | Imaging |
| Discovery facility | Subaru Telescope |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-12-13. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About 2M0437 b
Is 2M0437 b habitable?
No — 2M0437 b orbits outside the habitable zone of 2MASS J04372171+2651014 and is likely too cold for liquid water on its surface.
How far away is 2M0437 b?
2M0437 b is about 419 light-years from Earth in the constellation Taurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 7,376,160 years to get there.
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