Search results
Results From The WOW.Com Content Network
Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 22 January 2025, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never launched. 3 Block III satellites have completed ...
The list below concerns those minor planets in the specified number-range that have received names, and explains the meanings of those names. Official naming citations of newly named small Solar System bodies are approved and published in a bulletin by IAU's Working Group for Small Bodies Nomenclature (WGSBN). [ 1 ]
The list below concerns those minor planets in the specified number-range that have received names, and explains the meanings of those names. Official naming citations of newly named small Solar System bodies are approved and published in a bulletin by IAU's Working Group for Small Bodies Nomenclature (WGSBN). [ 1 ]
Named minor planet Provisional This minor planet was named for... Ref · Catalog 102617 Allium: 1999 VC 23: Allium is a plant that has been used worldwide for millennia. Among a multitude of varieties, A. sativum is the common cultivated sort and can be found almost yearlong, but in spring, in Gnosca and surrounding areas, people harvest and eat the delicious A. ursinum.
Leif Erland Andersson (1943–1979) observed that most satellites of the outer planets rotate synchronously about their parent planets, helped determine Pluto's pole position and albedo map, and determined that Pluto and its satellite Charon would display mutual transits and eclipses. He also made a catalogue of lunar craters. JPL · 9223
There are two navigation message types: LNAV-L is used by satellites with PRN numbers 1 to 32 (called lower PRN numbers) and LNAV-U is used by satellites with PRN numbers 33 to 63 (called upper PRN numbers). [9] The two types use very similar formats. Subframes 1 to 3 are the same, [10] while subframes 4 and 5 are almost the same. Each message ...
Planetary nomenclature, like terrestrial nomenclature, is a system of uniquely identifying features on the surface of a planet or natural satellite so that the features can be easily located, described, and discussed. [1]
Nineteen moons are large enough to be round, and two, Titan and Triton, have substantial atmospheres The number of moons discovered in each year until November 2019. Mercury, the smallest and innermost planet, has no moons, or at least none that can be detected to a diameter of 1.6 km (1.0 mi). [2]