Stars-894 Exclusive Now

| Parameter | Value | |-----------|-------| | | 600 kg, 3‑U (12 U) modular bus (derived from SpaceX Star‑link bus heritage). | | Orbit | Sun‑synchronous LEO, 550 km altitude, 98.2° inclination. | | Power | Deployable 12 m² solar array; 2 kW bus power (peak 2.5 kW). | | Attitude Control | 3‑axis reaction wheels + magnetorquers; pointing accuracy ≤ 0.05°. | | Thermal Control | Passive radiators + active loop heat pipe for detector cooling (−30 °C). | | Command & Data Handling | Dual‑redundant RAD750 processors, 8 TB solid‑state recorder. | | Communications | X‑band (downlink) + Ka‑band (high‑rate burst) via NASA Deep Space Network (DSN) 34 m stations. | | Launch Vehicle | Preferred: Falcon 9 (FT) – 2027 Q3; backup: Ariane 6 . |

Core concepts

Used as "standard candles" to measure distances across the Milky Way. Twin Stars: STARS-894