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  1. Home
  2. Exoplanets
  3. LHS 1903 b
Exoplanet

LHS 1903 b

Host star: LHS 1903Discovered: 2026
TransitTransiting Exoplanet Survey Satellite (TESS)

Distance from Earth: 35.7 parsecs (116.4 light years)

Discovery Method: Transit

The transit method detects planets by measuring the periodic dimming of a star's brightness as a planet passes in front of it. NASA's Kepler and TESS missions have used this technique to discover the majority of known exoplanets. The depth of the brightness dip reveals the planet's size relative to its star, while the period between transits gives the orbital period.

Physical Properties

Radius

1.38 R⊕

8,805 km

Mass

3.28 M⊕

1.96E25 kg

Orbital Period

2.16 days

0.006 years

Eq. Temperature

796 K

523°C

Orbital Semi-major Axis

0.0266 AU

Density

6.82 g/cm³

Eccentricity

0.0150

Insolation Flux

66.66 S⊕

Earth flux = 1.0

Compared to Earth

Radius

LHS 1903 b1.38 R\u2295
Earth1.00 R\u2295

1.38x Earth

Mass

LHS 1903 b3.28 M\u2295
Earth1.00 M\u2295

3.28x Earth

Orbital Period

LHS 1903 b2.16 days
Earth365.25 days

0.006x Earth

Temperature

LHS 1903 b796.00 K
Earth288.00 K

2.76x Earth

Star System: LHS 1903

Star Temperature

3,664 K

Star Radius

0.54 R☉

Star Mass

0.54 M☉

Planets in System

4

Stars in System

1

Habitability Assessment

Temperature Range

796 K is outside the range for liquid water (180-310 K).

Rocky Planet Size

1.38 Earth radii suggests a rocky composition.

Stellar Flux

Receives 66.66x Earth's insolation, outside the habitable zone.

Habitable Zone

This planet orbits outside the estimated habitable zone of its star.

Habitability assessments are rough estimates based on limited available data. True habitability depends on many additional factors including atmospheric composition, magnetic field presence, tidal locking, and stellar activity. These assessments should not be considered definitive.

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