Saggitarius A4
Gas Giant
Magnetic FieldExtreme Activity
Why is this a Gas Giant?Your planet has 80.4% hydrogen and helium, combined with a mass of 10.1x Earth, which exceeds the gas giant threshold.
Gas giants form when massive cores capture enormous atmospheres of light gases. They typically form beyond the 'frost line' where volatiles can condense.
Classification Criteria:
✓ Hydrogen + Helium: 80.4% (>60% required)✓ Mass: 10.1x Earth (>10x required)
Habitability ScoreExtremely Harsh
Contributing Factors
water50
Limited water content
geology40
Extreme volcanic activity may be hazardous
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere30
Hydrogen-rich atmosphere typical of gas giants
temperature20
Very cold - water frozen, challenging for life
magnetic Field100
Magnetic field provides radiation protection — but the black hole's accretion disk bathes this orbit in hard X-ray radiation
Physical Properties
Mass
10.10x Earth (6.03e+25 kg)Radius
2.16x Earth (13772 km)Surface Gravity
2.16x Earth (21.2 m/s²)Surface Temperature
196 K (-77 °C / -106 °F)Rotation Period
33.0 hours/day (slower than Earth)Orbital Environment
Star Type
BH-type (Black Hole)Distance from Star
40.10 AU (5998874615 million km)Atmosphere
Hydrogen and helium dominated with trace methane and ammonia
Elemental Composition
H - Hydrogen
49.1%
He - Helium
31.3%
N - Nitrogen
8.9%
Surface Characteristics
No solid surface - thick gaseous envelope with possible rocky core deep withinMoons
Moon 1receding0.098% - 45.0 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 2merged0.032% - 48.0 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 3rings0.030% - 1.8 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).