OrbitalForge / public result
195 kW satellite · 1200 km · 90.0°
✓ Deep-Space Relaysubmitted by st…@gmail.com · 25 Apr 2026, 20:43 (Oslo)
Score
11.332
Sun fixed along +X · amber arc sunlit · slate arc in Earth's umbra · drag-and-rotate or hands off to auto-spin.engine: gmat
Eclipse fraction
30.9 %
40 umbral events / day
Vallado (2013), Fundamentals of Astrodynamics and Applications (4th ed.), §5.3. Cylindrical-umbra closed-form for eclipse fraction. Production sims use GMAT's EclipseLocator instead — this preview is approximate, worst-case β=0.
Avg power delivered
134.78 kW
of 195 kW design
Power = design power × (1 − eclipse fraction). Refines once a thermal model lands.
Orbit period
109.42 min
GMAT-propagated
Kepler's third law: T = 2π √(a³/μ). Exact for two-body central-force; GMAT's point-mass propagator reproduces this to within integrator tolerance.
Δv (station-keeping)
0.065 m/s
per 24 h
Station-keeping ON by default: a 0.005 m/s prograde ImpulsiveBurn fires once per orbit (~27 m/s/year, comparable to ISS reboost spend per area-to-mass). Without it the 100 kW / 300 m² reference design crashes perigee in <24 h under SRP eccentricity-pumping. Burn budget is reported in the result as Δv_total.
Specific power
295 W/kg
vs 300 W/kg SBSP target
NASA OTPS Space-Based Solar Power report (8 Jan 2024). 300 W/kg is the advanced-array target — current flight-proven arrays (ROSA / MISSE-FF) land at ~150 W/kg.
Array area
400 m²
η = 30 %
Kopp & Lean 2011 (GRL 38 L01706). Total solar irradiance at 1 AU, SORCE/TIM calibrated: 1361 W/m². The NASA SBSP report uses the legacy 1367.5 W/m² for its reference designs.
Final SMA
7578.2 km
alt 1200.1 km
GMAT ReportFile last row · WGS84 equatorial radius
Inclination
90.00 °
RAAN 90°
SpaceX FCC filing SAT-LOA-20260108-00016 (30 Jan 2026). Proposed AI-constellation operating shell: 500–2000 km sun-synchronous, ~100 kW per satellite, up to 1 million sats.
Mission objectives · complete
×1.9 reward applied- Optical aperture ≥ 0.5 mactual: 0.500
- Laser comms ≥ 500 Wactual: 611.000
- Inclination ≥ 85° (near-polar)actual: 90.000
- Avg power ≥ 60 kWactual: 134.784
- Altitude ≥ 800 kmactual: 1200.000
Made with OrbitalForge
Every orbit, eclipse, and Δv propagated by NASA GMAT R2026a. Every constant cites a primary source (NASA SBSP, IERS, IAU, SpaceX FCC SAT-LOA-20260108-00016).