Sinclair Star Tracker (ST-16RT2)
Sinclair Interplanetary (Rocket Lab)
High-performance star tracker and baffle for small spacecraft, with 78+ units flown on more than a dozen missions.
Typed specifications65 values
Discloses 9 of 12 fields engineers filter by in this category (category median 8).
- Accuracy, cross-boresight
- 5 arcsec cross-boresight · datasheet p.1 5 arcsec cross-boresight (RMS), demonstrated on-orbit, including therm… | 5 arcsec rms, cross-boresight
- Mass
- 235 g Large Baffle · datasheet p.2 158 g No Baffle | 185 g Short Baffle | 235 g Total Mass, Large Baffle | 158 g Total Mass, No Baffle +1
- Accuracy, about boresight (roll)
- 55 arcsec around boresight · datasheet p.1 55 arcsec around boresight (RMS), demonstrated on-orbit, including ther… | 55 arcsec rms, around boresight
- Envelope (L×W×H)
- 99 Ø x 120 mm Large Baffle · datasheet p.2 62 x 56 x 38 mm No Baffle | 62 x 56 x 68 mm Short Baffle
- Update rate
- 2 Hz datasheet p.1 2 Hz attitude quaternion and angular rates at 2 Hz
- Max tracking rate
- 3 °/s datasheet p.1 3 °/s max
- Sun exclusion angle
- 22 ° Large Baffle · datasheet p.2 22 ° Large Baffle, sun-to-boresight | 34 ° Short Baffle | 34 ° Short Baffle, sun-to-boresight | 22 ° sun-to-boresight, Large Baffle +1
- Field of view
- 7.5° x 10° half-angle Large Baffle · datasheet p.2 15 ° Large Baffle: 7.5° x 10° half-angle (full angle = 2 × half-an… | 7.5° x 10° half-angle No Baffle | 15 ° No Baffle: 7.5° x 10° half-angle (full angle = 2 × half-angle… | 8° half-angle Short Baffle +1
- Supply voltage
- 9 V min · datasheet p.1 34 V max
- Power consumption
- 0.5 W <, Average · datasheet p.1 1 W Peak | 0.5 W max · Average | 0.5 W max · Average: < 0.5 W
- Data interface
- RS-485 Two half-duplex · datasheet p.1 RS-485 Two half-duplex RS-485, ±70 V fault tolerant | RS-485 two half-duplex, ±70 V fault tolerant
- Operating temperature
- -40 °C min · datasheet p.1 50 °C max | -40–50 °C operating
- Design lifetime
- 9 years GEO · datasheet p.1 13 years LEO (800 km)
- Configuration
- single unit Processor and star catalog built into unit · datasheet p.1
- Survival temperature
- -40 °C min · datasheet p.1 95 °C max | -40–95 °C survival
- Random vibration
- 29.6 g RMS datasheet p.1 29.6 g RMS min · > 29.6 gRMS
- Flight heritage
- 13 first generation units on-orbit, first launch November 2013; 40 second generation units on-orbit, first launch June 2016 datasheet p.1 10 units on-orbit Large Baffle | 30 units on-orbit with customer-designed baffles No Baffle | 13 units on-orbit Short Baffle | 30 units on-orbit with customer-designed baffles; 13 units on-orbit; 10 units on-orbit
- Missions flown
- 40 second generation units on-orbit · datasheet p.1
- Shock qualification
- 2 000 g datasheet p.1
- Baffle
- optional Baffle Options: No Baffle / Short Baffle / Large Baffle · datasheet p.2 none No Baffle
- Detector
- CMOS 2592 x 1944 CMOS active-pixel sensor · datasheet p.1
- Angular rate output
- yes Provides attitude quaternion and angular rates · datasheet p.1
- Indicative price
- 120 000 EUR ST + Baffle, No Baffle, each · datasheet p.2 140 000 EUR ST + Large Baffle, each | 140 000 EUR ST + Short Baffle, each
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 supplier14 lines, in the manufacturer's own wording
- On-orbit heritage
- 78+ units across SkySat, BRITE, GHGSat, Landmapper-BC, MKA-N, BlackSky Global, ALE, Momentus X-1, NEMO-HD and others
- Product type
- Star tracker with integrated sun-baffle
- Interface
- Serial digital interface, quaternion attitude output plus telemetry
- Absolute Accuracy
- 5 arcsecond cross-boresight (RMS)
- Absolute Accuracy (2)
- 55 arcsecond around boresight (RMS)
- Maximum slew rate
- 3°/second
- Detector
- 2592 x 1944 CMOS active-pixel sensor
- Supply voltage
- 9 V to 34 V
- Power
- < 0.5 W
- Lifetime
- 13 years LEO (800 km)
- Lifetime (2)
- 9 years GEO
- Field of view
- 8° half-angle
- Dimensions
- 62 x 56 x 38 mm
- Mass
- 158 g
About
Sinclair Interplanetary builds high-performance star trackers and sun-baffles for small spacecraft. As of the most recent published heritage list, there were 78 units on-orbit across the following missions: SkySat-1 through -21 (two per spacecraft, 42 total), BRITE-PL1, BRITE-PL2, BRITE-Toronto and BRITE-Montreal (one each, 4 total), Perseus M-1 and M-2 (one each, 2 total), GHGSat-D ‘CLAIRE’ (one unit), GHGSat-C ‘IRIS’ (integrated into the Darkstar laser downlink terminal), Landmapper-BC 1 through 5 (one each, 5 total), MKA-N 1 and 2 (one each, 2 total), BlackSky Global-1, -2, -3, -4, -7 and -8 (two each, 12 total), ALE 1 and 2 (two each, 4 total), two confidential commercial spacecraft, Momentus X-1 (one unit) and NEMO-HD (two units). The tracker incorporates a built-in digital processor, communicates over a serial interface, and reports attitude quaternion solutions plus housekeeping telemetry.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.