TYC 0434-04538-1 b
TYC 0434-04538-1 b is a cold gas giant orbiting TYC 0434-04538-1 in the constellation Ophiuchus. It lies about 2,001 light-years from Earth and was discovered in 2021 using the radial velocity method.
Is TYC 0434-04538-1 b in the Habitable Zone?
TYC 0434-04538-1 b orbits inside the inner edge of the habitable zone of TYC 0434-04538-1. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TYC 0434-04538-1: 5.433–13.314 AU (conservative: 6.881–12.623 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 TYC 0434-04538-1 b — one full orbit around TYC 0434-04538-1 — lasts 193.2 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.660 AU — comparable to the inner Solar System. Its orbit is mildly elliptical (eccentricity 0.08).
How Was TYC 0434-04538-1 b Discovered?
TYC 0434-04538-1 b was discovered in 2021 using the radial velocity method, with observations from Multiple Observatories.
The radial velocity method measures the subtle wobble of a star caused by the gravitational pull of an orbiting planet, visible as periodic shifts in the star's light spectrum. The size of the wobble reveals the planet's minimum mass.
How Far Away Is TYC 0434-04538-1 b?
TYC 0434-04538-1 b is 2,000.7 light-years (613.4 parsecs) from Earth. Light arriving here tonight left the planet about 2,001 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 35,212,320 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. TYC 0434-04538-1 b scores 0.08, ranking #4,665 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TYC 0434-04538-1
TYC 0434-04538-1
- Surface temperature
- 4,679 K (Sun: 5,772 K)
- Mass
- 1.04 M☉
- Radius
- 9.99 R☉
- Luminosity
- 46.7735 L☉
Planetary System
TYC 0434-04538-1 b is the only planet known to orbit TYC 0434-04538-1 so far.
TYC 0434-04538-1 b — Complete Data
| Mass (best estimate) | 1,938.76 Earth masses |
|---|---|
| Orbital period | 193.20 days |
| Orbital distance | 0.660 AU |
| Eccentricity | 0.080 |
| Earth Similarity Index | 0.08 |
| Distance from Earth | 2,000.7 light-years (613.4 parsecs) |
| Constellation | Ophiuchus |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-02-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TYC 0434-04538-1 b
Is TYC 0434-04538-1 b habitable?
No — TYC 0434-04538-1 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TYC 0434-04538-1 b?
TYC 0434-04538-1 b is about 2,001 light-years from Earth in the constellation Ophiuchus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 35,212,320 years to get there.
How long is a year on TYC 0434-04538-1 b?
One orbit around TYC 0434-04538-1 takes 193.2 Earth days.
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