Key statistics
Satellite ACS 3 at a glance.
Uptime
604
Days in orbit
Revolutions
≈ 13.9
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
97.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for ACS 3.
Object identification
Identified? True
Debris? False
Object name: ACS 3
International designator: 2024-077B
Object number (NORAD): 59588
Object ID (CCSDS): 59588
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 103.92 minutes
Inclination: 97.2643 deg
SMA: 7321.922 km
Apoapsis: 999.985 km
Periapsis: 887.589 km
RAAN: 305.5533 deg
Eccentricy: 0.00767528
Argument of periapsis: 328.3537 deg
Mean anomaly: 31.3022 deg
Mean motion: 13.85686951 rev/day
Mean motion (dot): 0.00018094 rev/day2
B* drag term: 0.015447429 1/REarth
Two-line elements (TLE)
Creation date: Dec. 17, 2025, 2:25 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 16, 2025, 8:52 p.m. UTC
TLE line 0: 0 ACS 3
TLE line 1: 1 59588U 24077B 25350.87001447 .00018094 00000-0 15447-1 0 9995
TLE line 2: 2 59588 97.2643 305.5533 0076753 328.3537 31.3022 13.85686951 82712
Live tracking on map
Real-time ground track for satellite ACS 3.
In-orbit conjunctions
There are no conjunctions computed for ACS 3, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
NASA's Advanced Composite Solar Sail System (ACS3) is a technology demonstration mission tasked with deploying a composite boom solar sail. NeonSat-1 is a high-resolution optical satellite by South Korea's KAIST that will be deployed as a technology demonstration for a planned future Earth observation constellation.
ACS 3 was lifted into orbit during the mission ‘Electron | Beginning Of The Swarm (ACS3 & NeonSat-1)’, on board a Electron space rocket.
The launch took place on April 23, 2024, 10:32 p.m. from Rocket Lab Launch Complex 1B.
For more information about the launch, click the button.
Electron | Beginning Of The Swarm (ACS3 & NeonSat-1)
Agency: Korea Advanced Institute of Science and Technology
Status: Launch Successful
Launch date: April 23, 2024, 10:32 p.m. UTC
Rocket: Electron
Launch pad: Rocket Lab Launch Complex 1B
Location: Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand
...
Latest news about this satellite
Like a Diamond in the Sky: How to Spot NASA’s Solar Sail Demo in Orbit
Now that its reflective sail has deployed fully open in orbit, the Advanced Composite Solar Sail System can be seen in the night sky from many locations across the world! Stargazers can join NASA’s #SpotTheSail campaign by using the NASA ap...
Rocket Lab successfully launches the ‘Beginning of the Swarm’ mission
Rocket Lab successfully launched the “Beginning of the Swarm” mission, its 47th overall yesterday. Electron took the skies at 10:32 am NZT...
Electron launches South Korean imaging satellite and NASA solar sail
Rocket Lab launched a South Korean smallsat and a NASA solar sail experiment on the company’s fifth flight of the year April 23.
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