No life — no phosphorus — DNA and ATP are built on itLow Activity
Why is this a Barren?Your planet has an unusual composition that doesn't fit standard classifications, or lacks the elements needed for complex geological processes.
Barren worlds can form from uncommon element combinations or may be remnants of larger bodies that lost their atmospheres and volatile materials.
Classification Criteria:
Composition doesn't match standard planet typesMass: 0.4x EarthTemperature: 297K
Habitability ScoreMarginal
42
Contributing Factors
water67
Abundant water (low gravity lets water escape to space)
geology60
Some geological activity provides slow nutrient cycling
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry50
Carbon and hydrogen present - organic chemistry possible
atmosphere50
CO₂ atmosphere with moderate greenhouse effect
temperature100
Optimal temperature range for liquid water and life
magnetic Field30
No magnetic field - vulnerable to solar radiation — but the pulsar's beams bathe this orbit in hard X-rays
Physical Properties
Mass
0.40x Earth (2.39e+24 kg)
Radius
0.74x Earth (4,694 km)
Surface Gravity
0.74x Earth (7.2 m/s²)
Surface Temperature
297 K (24 °C / 75 °F)
Rotation Period
25.0 hours/day (slower than Earth)
Orbital Environment
Star Type
NS-type (Neutron Star)
Distance from Star
0.19 AU (28.4 million km)
Orbital Period
26 days
Atmosphere
Thin CO₂ atmosphere
Elemental Composition
H - Hydrogen
39.2%
Fe - Iron
20.3%
C - Carbon
19.0%
Surface Characteristics
Barren rocky surface with unusual elemental composition
Matched on physical properties only — but pulsar planets are real: the first exoplanets ever confirmed (PSR B1257+12, 1992) orbit a neutron star.Discovered 2017 via transit · 40 light-years awaySource: NASA Exoplanet Archive