A subsatellite, also known as a submoon or a moonmoon, is a "moon of a moon" or a hypothetical natural satellite that orbits the moon of a planet. It is...

mapping camera, a laser altimeter, a mass spectrometer, and a lunar subsatellite deployed at the end of the moonwalks. The lunar module returned safely...

In the case of satellites, it is also known as a suborbital track or subsatellite track, and is the vertical projection of the satellite's orbit onto the...

in lunar orbit, continuing Worden's observations. After releasing a subsatellite, they ignited their service propulsion system to put them on a trajectory...

A hypothetical Solar System object is a planet, natural satellite, subsatellite or similar body in the Solar System whose existence is not known, but has...

Young and Duke rejoined Mattingly in lunar orbit, the crew released a subsatellite from the service module (SM). During the return trip to Earth, Mattingly...

able to host its own moon, called a subsatellite, in a stable orbit, although no evidence for such a subsatellite has been found. The original paper presented...

can stay in a low orbit indefinitely. The Apollo 15 subsatellite PFS-1 and the Apollo 16 subsatellite PFS-2, both small satellites released from the Apollo...

stage". Retrieved 2011-01-01. "NASA NSSDC Master Catalog - Apollo 15 subsatellite". Retrieved 2011-01-01. "NASA NSSDC Master Catalog - Luna 20". Retrieved...

Huoyan-1 early warning class, and an unknown class for TJS-3 and its subsatellite. TJS-1, TJS-4, and TJS-9 satellites, launched in 2015, 2019, and 2021...

Hypothetical objects Fifth giant Nemesis Phaeton Planet Nine Planet V Planet X Subsatellites Theia Tyche Vulcan Vulcanoids Exploration (outline) Colonization Discovery...

provide coverage of Cuban activity. Mission 4009 included an ELINT P-11 subsatellite for radar monitoring, which was launched into a higher orbit. (NSSDC...

cloud Hills Cloud Meteoroid Micrometeoroid Meteor Bolide Moons Moonlets Subsatellites (hypothet.) Minor planets (see below) Asteroids Dwarf planets Moons...

S. state in which this happens, the event is known as Lahaina Noon. Subsatellite point Ian Ridpath, ed. (1997). "subsolar point". A Dictionary of Astronomy...

early to be used as a life boat. The LM frequencies were also used by subsatellites deployed in lunar orbit after the LM had departed the Moon, as part...

have used it to photograph the Earth. SIM also had other sensors and a subsatellite. Sector 2 (70°) contained the service propulsion system (SPS) oxidizer...

and the time span of the Doppler data. Apollos 15 and 16 released subsatellites. The Kaguya/SELENE mission had tracking between 3 satellites to get...

summary and introduction. back to summary Lists of astronomical objects Subsatellite, also known as Moonmoon – A satellite that orbits a natural satellite...

their orbital periods are hundreds of days. No "moons of moons" or subsatellites (natural satellites that orbit a natural satellite of a planet) are...

1,500 kg (2,450 to 3,310 lb). At least two missions deployed ELINT subsatellites. Ground resolution for the satellite was 140 m (460 ft), with a swath...

trip, two of the SIM bays, on Apollos 15 and 16, also launched a lunar "subsatellite" before the astronauts performed the Trans-Earth Injection burn with...

Hypothetical objects Fifth giant Nemesis Phaeton Planet Nine Planet V Planet X Subsatellites Theia Tyche Vulcan Vulcanoids Exploration (outline) Colonization Discovery...

both a ring system and a subsatellite, which would be possible due to the large Hill sphere mentioned above. The subsatellite then proceeds to quickly...

Venera-D could incorporate some NASA components, including balloons, a subsatellite for plasma measurements, or a long-lived (24 hours) surface station on...

satellites of the Solar System – Astronomical body that orbits a planet Subsatellite, also known as a submoon or moonmoon Tidally detached exomoon – Planet...

concentrations, or "mascons". Data from the missions, and from the lunar subsatellites left by Apollo 15 and 16, were used to map such variations in lunar...

Missions 1203, 1207, 1208, 1209, and 1212 to 1219 included Ferret ELINT subsatellites, which were launched into a high Earth orbit to catalogue Soviet air...

mission had been pushed back to 2018, and scaled back to an orbiter with a subsatellite orbiter, and a single lander with an expected 3-hour operation time....

tallest mountains in the Solar System Lists of astronomical objects Subsatellite The moons more massive than Iapetus are: the Moon, the 4 Galilean moons...

asteroid 90 Antiope Minor-planet moon § List of minor planets with moons Subsatellite, also known as Moonmoon – A satellite that orbits a natural satellite...