Tracking 30970 objects as of 3-Jul-2025
HD Live streaming from Space Station
objects crossing your sky now

PROPCUBE 3

Track PROPCUBE 3 now!
10-day predictions
PROPCUBE 3 is classified as:


NORAD ID: 40973
Int'l Code: 2015-058K
Perigee: 494.4 km
Apogee: 710.0 km
Inclination: 64.8 °
Period: 96.6 minutes
Semi major axis: 6973 km
RCS: Unknown
Launch date: October 8, 2015
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

PROPCUBE 3 (Merryweather) belongs to a series of three 1U CubeSats on a researching mission to measure artificial ionization. The satellites were developed by the Naval Postgraduate School (NPS) and provided by Tyvak Nano-Satellite Systems Inc. The cubesats are performing dual frequency ionospheric calibration measurements of ionospheric electron density and irregularities. They performing measurements of total electron content by differential group delay, of plasma irregularities by amplitude and phase scintillations and detection of artificial ionization and irregularities generated by the HAARP, Arecibo and Sura high frequency facilities.
Your satellite tracking list
STARLINK-30456
Track 1 satellite(s)




NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 40973U 15058K   25183.94612178  .00003743  00000-0  31555-3 0  9998
2 40973  64.7689 261.0365 0154560 191.3373 168.4245 14.90927951 62674
Source of the keplerian elements: Caltech