Autonomous Star Tracker for Geostationary Satellites

SKU: AA-STR

Star Tracker by Leonardo (1 more product)

Note : Your request will be directed to Leonardo.

AA-STR Image

The AA-STR from Leonardo is a Star Tracker that has a field of view of 20 x 20 degrees and a dynamic range of 1.5-5.5 Mi. This autonomous star tracker can track up to 15 stars and has a tracing rate of up to 2 degrees/sec. It has an acquisition time of less than 9 sec and an update rate of 4, 5, 8, or 10 Hz. The medium Field of View (FOV) star trackers are integrated into a single assembly with a radiation-hardened design that has an SEU tolerance of up to 170000 protons/cm2 /sec. It has a bias of 8.25 arcsec (pitch/yaw) and 11.1 arcsec (roll) and an NEA random error of less than 34 arcsec (pitch & yaw) and 288 arcsec (roll) at 2 degrees/sec. The star tracker features Active Pixel Sensor (APS) CMOS technology and supports MIL-STD-1553B and RS-422 data interfaces for telecommand and telemetry. It requires a power supply of 20-110 V and has a power consumption of 5.6-12.6 W. 

The star tracker has achieved TRL 9 status and has flown on several successful missions such as Bepi Colombo, PRISMA, and AlphaBus. It has a mass of 2.6 Kg and measures 164 x 156 x 348 mm. The star tracker has a lifetime of 18 years in GEO orbit. It is suitable for a broad range of missions and is used in the commercial market of telecommunication geostationary satellites, Earth observation satellites, scientific satellites, and interplanetary missions/probes.

Product Specifications

Product Details

  • Part Number
    AA-STR
  • Manufacturer
    Leonardo
  • Description
    Autonomous Star Tracker for Geostationary Satellites

General Parameters

  • Altitude Accuracy
    8.25 arcseconds
  • Mass
    2600 g
  • Slew Rate
    2 Degree/sec
  • Data Update Rate
    4 Hz, 5 Hz, 8 Hz, 10 Hz
  • Supply Voltage
    20 to 110 V
  • Power Consumption
    5.6 to 12.6 W
  • Vibration
    Design level Higher than 22g RMS, Qualification level 17.03g RMS all axis
  • Interface
    RS-422
  • Space Heritage
    Yes
  • Storage Temperature
    -30 to 70 Degree C
  • Operating Temperature
    -30 to 60 Degree C
  • Dimension
    164 x 156 x 348 mm
  • Application
    trackers are utilised in the commercial market of telecommunication geostationary satellites, in Earth observation satellites, scientific satellites and for interplanetary missions/probes

Technical Documents

Space Missions - A list of all Space Missions

esa

Name Date
Altius 01 May, 2025
Hera 01 Oct, 2024
Arctic Weather Satellite 01 Jun, 2024
EarthCARE 29 May, 2024
Arctic Weather Satellite (AWS) 01 Mar, 2024
MTG Series 13 Dec, 2022
Eutelsat Quantum 30 Jul, 2021
Sentinel 6 21 Nov, 2020
OPS-SAT 18 Dec, 2019
Cheops 18 Dec, 2019

isro

Name Date
INSAT-3DS 17 Feb, 2024
XPoSat 01 Jan, 2024
Aditya-L1 02 Sep, 2023
DS-SAR 30 Jul, 2023
Chandrayaan-3 14 Jul, 2023
NVS-01 29 May, 2023
TeLEOS-2 22 Apr, 2023
OneWeb India-2 26 Mar, 2023
EOS-07 10 Feb, 2023
EOS-06 26 Nov, 2022

jaxa

Name Date
VEP-4 17 Feb, 2024
TIRSAT 17 Feb, 2024
CE-SAT 1E 17 Feb, 2024
XRISM 07 Sep, 2023
SLIM 07 Sep, 2023
ALOS-3 07 Mar, 2023
ISTD-3 07 Oct, 2022
JDRS 1 29 Nov, 2020
HTV9 21 May, 2020
IGS-Optical 7 09 Feb, 2020

nasa

Name Date
NEO Surveyor 01 Jun, 2028
Libera 01 Dec, 2027
Europa Clipper 10 Oct, 2024
SpaceX CRS-29 09 Nov, 2023
Psyche 13 Oct, 2023
DSOC 13 Oct, 2023
Psyche Asteroid 05 Oct, 2023
Expedition 70 27 Sep, 2023
SpaceX Crew-7 25 Aug, 2023
STARLING 18 Jul, 2023