#subsatellite
Today I wondered: if planets orbit stars, and moons orbit planets, what's preventing the creation of smaller masses that in theory would orbit moons?

There's a Wiki on it:

en.wikipedia.org/wiki/Subsate...
Subsatellite - Wikipedia
en.wikipedia.org
October 21, 2026 at 1:13 AM
China's Shenlong spaceplane released a subsatellite in June, retrieved it in July, then redeployed and recaptured it again by Sept. 13, according to tracking data.

defence-blog.com/chinas-secre...
China’s secretive spaceplane recaptures its own satellite
China's spaceplane has spent the past three months releasing, retrieving, and then recapturing the same small satellite in orbit, according to a timeline astrophysicist Jonathan McDowell posted Sept. ...
defence-blog.com
September 24, 2026 at 3:02 PM
I do continue to wonder if C is actually the main part of the original Kosmos-2558, and what was tracked after Apr 2025 as Kosmos-2558 was really a subsatellite or discarded module. The fact that no additional payload has been registered with the UN by Russia would support this
September 12, 2026 at 10:46 PM
On Jun 21 the Chinese spaceplane (object 2026-024A) deployed a small satellite (24H) which it appears to have retrieved on Jul 12. Space Force have now cataloged a further object (24J) which may be a further subsatellite, or even possibly the same one - more data needed.
September 11, 2026 at 9:25 PM
Subsatellite - Wikipedia
en.wikipedia.org
September 5, 2026 at 7:03 AM
I hope Makemake's moon has a moonmoon.

en.wikipedia.org/wiki/Subsate...
January 3, 2025 at 9:55 PM
The `rocket that launched it` is 67690. 69673 is a subsatellite that the spaceplane deployed and is now playing catch with.

And yes, I think we should carry on using the too-deeply-ingrained word TLE and reinterpret it as 'Those Lovable Elements' or something
July 28, 2026 at 8:25 PM
The new object, 2025-002C (62734), is likely an inert jettisoned piece of equipment (docking adapter? refuelling system?) but not impossible it's a subsatellite - will monitor the tracking data for any manuevers
December 30, 2025 at 3:54 PM
New object 58954 associated with the Japanese 2021-102 launch. At first I though it might be the long awaited second target subsatellite from the DRUMS experiment, but the TLEs seem a better match for it being some kind of debris object separating from RAISE-2 around Feb 10
February 13, 2024 at 12:22 AM
Based on the Russian launch announcement it seems likely that this flight, like the previous one of this series in 2022, carries a small subsatellite to be released from the top of the main satellite once the orbit is circularized
October 27, 2023 at 3:29 PM
Did You Know: Dibella is a moonmoon? As the Imperial Orrery shows, Dibella is a moon of Mara, who is a moon of Zenithar. This makes Dibella a moonmoon, also known as a subsatellite, moonlet, or submoon.
April 15, 2026 at 4:00 AM
🇺🇸🇷🇺 Cosmos-2558, the Russian inspector spacecraft that has been tracking the US 326 satellite for a long time, recently launched an unknown object, most likely a highly maneuverable subsatellite with onboard high-speed kinetic anti-satellite weaponry.
July 1, 2025 at 2:00 AM
Apparently not! Also a moon of a moon is called a “moonmoon” en.m.wikipedia.org/wiki/Subsate...
Subsatellite - Wikipedia
en.m.wikipedia.org
December 13, 2024 at 1:44 AM
Getting closer to a reality where even being in space, an adversary can reach out their window and capture your tech. The US has the X-37B which is similar and the Space Force asked private companies for “On-Orbit, Service and Manufacturing” capabilities.
China’s spaceplane conducted proximity and capture maneuvers with subsatellite, data suggests
China’s spaceplane conducted proximity and capture maneuvers with subsatellite, data suggests China’s secretive spaceplane may have performed multiple recaptures of an object it released into orbit during its recently completed second flight as part of on-orbit testing.
spacenews.com
May 11, 2023 at 6:48 PM
Ongoing militarization of space as Russian satellite deploys a sub-satellite near key American satellite.

united24media.com/latest-news/...
“Space Matryoshka”: Russian Spacecraft Deploys Possible Anti-Satellite Weapon Near USA 326
Kosmos-2558's recent deployment of a subsatellite has drawn attention from US officials, who suspect its military applications in space alongside USA 326.
united24media.com
July 1, 2025 at 9:13 PM
Lachie Hayes - Subsatellite
Graveyard with Ghost DJs
2026-07-18 05:45 NZST
July 17, 2026 at 5:45 PM
⚡ Russian satellite Kosmos-2558, which has been tracking the American USA 326 reconnaissance satellite for nearly two years, deployed a previously unannounced subsatellite.
“Space Matryoshka”: Russian Spacecraft Deploys Possible Anti-Satellite Weapon Near USA 326
Kosmos-2558's recent deployment of a subsatellite has drawn attention from US officials, who suspect its military applications in space alongside USA 326.
united24media.com
July 1, 2025 at 1:49 PM
Flashback Friday: On August 4, 1971, Apollo 15 deployed the Particles and Fields Subsatellite (PFS-1) into lunar orbit—just before leaving the Moon.

nssdc.gsfc.nasa.gov/nmc/spacecra...

#FlashbackFriday #OSMED #Apollo15 #PFS1 #LunarScience #SatelliteDesign #NASA #SpaceHistory #DeepSpaceExploration
August 15, 2025 at 10:00 AM
Lachie Hayes is touring his rockin' new album of alt-country and blues Subsatellite in Auckland, Hamilton, Helensville & Leigh this week!

Get tickets NOW via UTR 🛹 🤠
Lachie Hayes Touring New Album 'Subsatellite'
Southland songwriter is playing with band in Auckland, Hamilton, Helensville and Leigh.
www.undertheradar.co.nz
October 1, 2025 at 8:45 PM
Southland alt-country / blues-rock maverick Lachie Hayes is venturing up north for a spring tour — celebrating his new album Subsatellite, produced by Delaney Davidson 🙌

Playing this October in Auckland, Hamilton, Helensville & Leigh + TONIGHT in Dunedin! Get tickets via UTR.
Lachie Hayes Touring New Album 'Subsatellite'
Southland songwriter is playing with band in Auckland, Hamilton, Helensville and Leigh.
www.undertheradar.co.nz
September 11, 2025 at 10:51 PM
#OTD in 2021, China's Tianwen 1 spacecraft entered orbit around Mars. It carried a lander with the Zhurong rover, which landed on the planet on May 14, 2021.
February 10, 2026 at 12:43 PM
#OTD in 2021, Chinese Tianwen 1 spacecraft entered orbit around Mars. On board was the lander with the Zhurong rover, that landed on the planet on May 14, 2021.
February 10, 2025 at 8:17 PM
You sent me down the rabbit hole, and apparently one name is schmoon

en.m.wikipedia.org/wiki/Subsate...

None are known, but there was hope for Saturn's moon Rhea
Subsatellite - Wikipedia
en.m.wikipedia.org
September 30, 2023 at 7:22 AM
*technically* it’s a subsatellite, but it’s also called a moonmoon
November 23, 2024 at 7:10 AM