Brachium IV
TundraNo survey data available. This world remains unexplored.
The atmospheric composition of Brachium IV reads like a chemist's fever dream—nitrogen and oxygen in near-perfect Earth-standard ratios, yet the spectroscopy keeps hinting at trace methane signatures that shouldn't persist in a system this old. I've circled back to three other candidates in this sector over the past decade, each one promising, each one ultimately sterile; something about Brachium IV's delicate chemical balance makes me suspect we're looking at active biological processes, not mere geological happenstance. The landing teams are champing at the bit, and I confess I share their eagerness—it's been far too long since I've felt that particular thrill of standing on genuinely unknown ground.
— Captain Vex Moreau, Explorer's Guild Field Journal
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Physical Properties
Radius
6173 km
Mass
0.81 M⊕
Surface Gravity
0.86 g
Temperature
222 K (-51°C)
Atmosphere
0.632 atm — Thin N2/CO2
Day Length
29.9 hours
Orbital Period
8.0 years
Orbital Distance
4.01 AU