HORUS Star Tracker
Sodern
High-performance single-box star tracker: <1.6kg, 3 arcsec XY precision, CMOS with TEC, LEO-GEO-deep space, qualified 2025, withstands severe mechanical and radiation environments.
Typed specifications51 values
Discloses 9 of 12 fields engineers filter by in this category (category median 8).
- Accuracy, cross-boresight
- 3.5 arcsec high frequency spatial (pixel) error XY @ 3 sigma · datasheet p.2 0.8 arcsec low frequency spatial (FOV) error XY @ 3 sigma | 3 arcsec temporal noise on XY @ 3 sigma | 3.5 arcsec max | 11 arcsec max · bias (worst case), end of life worst conditions
- Mass
- 1 600 g nom. · datasheet p.2 1 600 g
- Accuracy, about boresight (roll)
- 25 arcsec high frequency spatial (pixel) error Z @ 3 sigma · datasheet p.2 5.8 arcsec low frequency spatial (FOV) error Z @ 3 sigma | 22 arcsec temporal noise on Z @ 3 sigma | 25 arcsec max
- Envelope (L×W×H)
- 141 X 141 MM datasheet p.2 250 MM baffle length | 141 x 141 mm, 250 mm dimension callouts on product view
- Update rate
- 8 Hz datasheet p.2 8 Hz output rate, 8 or 10 Hz | 10 Hz | 10 Hz output rate, 8 or 10 Hz
- Max tracking rate
- 6 °/s in Acquisition · datasheet p.2 8 °/s in Tracking
- Sun exclusion angle
- 24 ° Baffle Sun Exclusion Angle · datasheet p.2
- Lost-in-space acquisition time
- 2.9 s time from lost-in-space, typ · datasheet p.2 2.9 s typ
- Supply voltage
- 70 V min · datasheet p.2 105 V max | 24–50 V as published, mode unspecified | 70–105 V OH power supply, 70-105 or 24-50 | 24 V min +2
- Power consumption
- 7 W max · OH, with all TM read at each ETR, TEC OFF · datasheet p.2 7 W max · typ, TEC OFF
- Data interface
- MIL-STD-1553 datasheet p.2 MIL-STD-1553 MIL-STD-1553B output data
- Operating temperature
- -30 °C min · datasheet p.2 50 °C max | -30–50 °C operating
- Design lifetime
- 18 years in GEO · datasheet p.2 10 years in LEO
- Export status
- ITAR-free datasheet p.2 EU dual-use 7A004a
- Configuration
- single unit single box standalone star tracker · datasheet p.1
- Survival temperature
- -40 °C min · datasheet p.2 70 °C max | -40–70 °C storage
- Random vibration
- 31 g RMS random, in/out of plane · datasheet p.2
- Flight heritage
- First flight models delivered in 2023; ESA Qualified datasheet p.1
- Satellite class
- GEO optimal for GEO missions · datasheet p.1
- Baffle
- integrated baffle protecting the lens from direct Sun and Earth illumina… · datasheet p.2
- Detector
- CMOS FaintStar CMOS detector with Thermo-Electric Cooler · datasheet p.2
- Earth exclusion angle
- 18 ° baffle Earth exclusion angle · datasheet p.2
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier13 lines, in the manufacturer's own wording
- Mass
- <1.6 kg
- Architecture
- Single-box (OH + EU integrated)
- Precision xy
- 3 arcsec
- Temporal noise (XY/Z)
- 3 / 22 arcsec
- Detector
- CMOS with thermoelectric cooler (TEC)
- Acquisition robustness
- <=6 deg/s
- Tracking robustness
- <=8 deg/s
- Sun exclusion angle
- 24 deg
- Orbital range
- LEO, MEO, GEO, Deep Space
- Design lifetime
- 10 years LEO / 18 years GEO
- Supply voltage
- 24-50V or 70-105V
- Interface
- MIL-STD-1553 (RS422 UART optional)
- TRL
- 9 (qualified 2025)
About
The Sodern HORUS is a high-performance, single-box star tracker integrating optical head, hardware, and software in one unit. Designed for non-centralized satellite architectures requiring independent attitude determination per star tracker unit. Mass is less than 1.6 kg. Precision is 3 arcsec XY with 3/22 arcsec temporal noise. CMOS detector with thermoelectric cooler for sensitivity in demanding thermal environments. Resistant to severe mechanical loads, extreme temperatures, radiation, and stray light. Configurable power supply at 24-50V or 70-105V with MIL-STD-1553 baseline interface (RS422 UART optional). Tracking at up to 8 deg/s, sun exclusion 24 degrees. Qualified in 2025 (TRL 9).
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.