Star trackers compared: 42 models

Star trackers determine spacecraft attitude by matching an observed star field against an onboard catalogue. The table below compares the models listed on NewSpace Market by mass, power draw and envelope — the three figures that decide whether a unit fits a given bus.

Figures are taken from manufacturer datasheets and product pages, normalised to common units. Every row links to the product page and, where available, to the datasheet itself. As of 2026-08-13.

42
models listed
18
manufacturers
0.45 kg
median mass (0.035–4.7 kg, 37 values)
3 W
median power (0.5–21 W, 31 values)
Model Manufacturer Mass, kg Power, W Voltage, V Max dim., mm Update rate Datasheet
Twinkle Star Tracker arcsec 0.035 1 5 40 — PDF
PST3S-K4 Star Tracker TY-Space Technology 0.06 0.9 5 75.7 10 Hz PDF
NST10-G1 Star Tracker TY-Space Technology 0.09 1.2 5 86 10 Hz PDF
PST3S-H4 Star Tracker TY-Space Technology 0.095 1 5 98 10 Hz PDF
n-ART ST 1U Star Tracker Gumush 0.1 — — — — —
SASC Sub-Arcsecond Star Camera StarSpec Technologies 0.1 5 12 — — PDF
PST3S-H5 Star Tracker TY-Space Technology 0.13 1 5 134 10 Hz PDF
Compact Star Tracker Glavkosmos 0.193 0.5 5 93 — —
n-ART ST 2U Star Tracker Gumush 0.2 — — — — —
ARGO-2 High Performance Star Tracker System (HSTS-2) Tsd-space 0.25 3 5 — — —
n-ART ST 3U Star Tracker Gumush 0.3 — — — — —
PST4S-H1 Star Tracker TY-Space Technology 0.31 0.9 5 141 10 Hz PDF
ASTRO CL Star Tracker Jena-Optronik 0.32 1.2 4.2–5.5 129 5 or 8 Hz —
T3 Star Tracker Terma 0.35 2 5–12 100 <5 Hz —
ST400 Berlin Space Technologies 0.35 — — 146 5Hz PDF
Nano Star Trackers (NST) Blue Canyon Technologies 0.35 — — — — —
NST4S-A2 Star Tracker TY-Space Technology 0.37 0.9 5 182 10 Hz PDF
NST5S-A1 Star Tracker TY-Space Technology 0.38 1.5 5 168 10 Hz PDF
Scorpio Star Tracker arcsec 0.45 2 5 162 — PDF
VST-68M, VST-41M Star Trackers VECTRONIC Aerospace GmbH 0.47 3 9–40 180 — PDF
Redwire SpectraTRAC Star Tracker Redwire Corporation 0.475 5 — 120 4 Hz PDF
SpectraTRAC Star Tracker Adcole Space (Redwire) 0.475 2.5 — 120 — PDF
Star Tracker LEO Glavkosmos 0.5 5 10–32 149 — —
MIST Miniature Integrated Star Tracker Space Micro 0.55 — — — — PDF
uSTAR-250 Star Tracker Space Micro 0.75 — — — — —
Star Tracker GEO Glavkosmos 0.8 5 10–32 149 — —
NST20-G3 Star Tracker TY-Space Technology 1.2 4 28 268 10 Hz PDF
NST20-G2 Star Tracker TY-Space Technology 1.2 4 28 268 15 Hz PDF
T1 Star Tracker Terma 1.53 3.25 — — up to 10 Hz —
HORUS Star Tracker Sodern 1.6 — 24–50 — — PDF
ASTRO APS3 Autonomous Star Sensor Jena-Optronik 1.8 6 5 210 8, 10, or 16 Hz —
ASTROgyro Integrated Attitude Determination System Jena-Optronik 2 21 — — — —
ASTRO APS Autonomous Star Sensor Jena-Optronik 2 6 28 237 — —
ASTRO XP High Accuracy Star Tracker Jena-Optronik 2.5 1.5 28–100 — 2, 4, or 8 Hz —
AA-STR Autonomous Star Tracker Leonardo SpA (Space Division) 2.6 5.6 60–110 348 10/8/5/4 Hz —
A-STR Autonomous Star Tracker Leonardo SpA (Space Division) 3.55 8.9 20–50 290.5 10 Hz, 4 Hz —
HST-A1 Star Tracker TY-Space Technology 4.7 3.5 28 — 10 Hz PDF
AURIGA CP Star Tracker Sodern — — — — Up to 10 Hz PDF
Micro Star Sensor Pyxis Space — — — 100 — —
MicroST Solar MEMS Technologies — 6 5 — — PDF
Nano Star Sensor Pyxis Space — — — 46 — —
Sagitta Star Tracker arcsec — 1.5 5 95 — —

A dash means the figure is not published by the manufacturer. Download the same table as CSV — free to reuse with attribution (CC BY 4.0).

See also: all star trackers in the catalogue · component benchmarks · other comparisons