Key statistics
Satellite OBJECT D at a glance.
Uptime
20
Days in orbit
Revolutions
≈ 15.2
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
97.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for OBJECT D.
Object identification
Identified? True
Debris? False
Object name: OBJECT D
International designator: 2025-155D
Object number (NORAD): 64879
Object ID (CCSDS): 64879
Country: TO BE DETERMINED/UNKNOWN (TBD)
Current information (Y/N): Y
RCS size: SMALL
Orbital parameters
Period: 94.61 minutes
Inclination: 97.414 deg
SMA: 6877.814 km
Apoapsis: 506.335 km
Periapsis: 493.022 km
RAAN: 190.8752 deg
Eccentricy: 0.0009678
Argument of periapsis: 168.8441 deg
Mean anomaly: 191.3011 deg
Mean motion: 15.22043774 rev/day
Mean motion (dot): 0.00008423 rev/day2
B* drag term: 0.0003709 1/REarth
Two-line elements (TLE)
Creation date: Aug. 14, 2025, 2:27 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 13, 2025, 9:38 p.m. UTC
TLE line 0: 0 OBJECT D
TLE line 1: 1 64879U 25155D 25225.90162109 .00008423 00000-0 37090-3 0 9995
TLE line 2: 2 64879 97.4140 190.8752 0009678 168.8441 191.3011 15.22043774 33899
Live tracking on map
Real-time ground track for satellite OBJECT D.
In-orbit conjunctions
There are no conjunctions computed for OBJECT D, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Ionosfera is a constellation of four ionospheric and magnetospheric research satellites developed by for Roscosmos for the project Ionozond. The satellites will operate on circular sun-synchronous orbits (SSO), at altitude of about 800 km and located in two orbital planes of two satellites each. The following science instruments are carried on the satellites: * SPER/1 Plasma and energy radiation spectrometer * SG/1 Gamma-ray spectrometer * GALS/1 Galactic cosmic ray spectrometer / 1 * LAERTES On-board Ionosonde * NBK/2 Low-frequency wave complex * ESEP Ionospheric plasma energy spectrometer * Ozonometer-TM Ozonometer * MayaK On-board radio transmitters * PES GPS-GLONASS device
OBJECT D was lifted into orbit during the mission ‘Soyuz 2.1b/Fregat-M | Ionosfera-M 3 & 4’, on board a Soyuz 2.1b/Fregat-M space rocket.
The launch took place on July 25, 2025, 5:54 a.m. from Cosmodrome Site 1S.
For more information about the launch, click the button.
Soyuz 2.1b/Fregat-M | Ionosfera-M 3 & 4
Agency: N/A
Status: Launch Successful
Launch date: July 25, 2025, 5:54 a.m. UTC
Rocket: Soyuz 2.1b/Fregat-M
Launch pad: Cosmodrome Site 1S
Location: Vostochny Cosmodrome, Siberia, Russian Federation
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Latest news about this satellite
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This week’s launches predominantly featured SpaceX’s Falcon 9, beginning with a Starlink mission from Vandenberg,… The post Space Traffic Report: Busy Week for Falcon 9: TRACERS, Starlink & O3b Satellites! appeared first on NASASpaceFlight.com.
Roscosmos Ionosfera science mission to launch atop Soyuz from Vostochny Cosmodrome
A Soyuz 2.1b rocket is set to launch from Site 1S at Vostochny Cosmodrome in… The post Roscosmos Ionosfera science mission to launch atop Soyuz from Vostochny Cosmodrome appeared first on NASASpaceFlight.com.
Launch Roundup: Russian and European science missions to launch during busy week
Eight launches are scheduled for this week. Four of these are Falcon 9s, with SpaceX… The post Launch Roundup: Russian and European science missions to launch during busy week appeared first on NASASpaceFlight.com.
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