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{{Short description|Ratio of gravitational forces on a satellite from the Sun and host planet}} ...ral satellite]]. The term was coined by [[Isaac Asimov]] in ''The Magazine of Fantasy and Science Fiction'' in 1963.<ref name="Asimov">{{cite book |first ...

{{Short description|Outer moon of Uranus}} ...ef name="cneos-diameter"/> Given H {{=}} 13.7 and assuming an albedo range of 0.04–0.10, the diameter range is {{val|8|-|12|u=km}}.}}<br>8 km<ref name="S ...

...long<ref>{{cite news|author=Dennis Overbye|title=Hubble Takes Snapshot of Jupiter's 'Black Eye' |url=https://www.nytimes.com/2009/07/25/science/space/25hubbl |place = [[Jupiter]] ...

{{Short description|Outer moon of Neptune}} ...f name="MPEC-2024-D114"/> S/2002 N 5 orbits Neptune at an average distance of over {{convert|23|e6km|e6mi|abbr=unit}} and takes almost 9 Earth years to c ...

{{Short description|Outer moon of Neptune}} ...ef name="cneos-diameter"/> Given H {{=}} 12.1 and assuming an albedo range of 0.04–0.10, the diameter range is {{val|16|-|25|u=km}}.}}<br>14 km<ref name= ...

{{short description|Set of gravitationally bound objects in orbit}} ...wn in order of their distance.| caption1 = Saturn, its rings and major icy moons—from Mimas to Rhea.}} ...

...tude and latitude. The [[prime meridian]] is the centre of the [[near side of the Moon]].]] ...Planetocentric and planetographic coordinates }}</ref> is a generalization of the [[geographic coordinate system|geographic]], [[geodetic coordinate syst ...

{{short description|1676 demonstration of light's finite speed by Danish astronomer Ole Rømer}} ...ment official in his native [[Denmark]] after his discovery of the [[speed of light]] (1676). The engraving is probably posthumous.]] ...

...8 Virginis''' is an [[F-type main sequence star]] in the [[constellation]] of [[Virgo (constellation)|Virgo]]. It is around 108 [[light year]]s distant ...=Heber |first9=U. |eprint=1012.0707|class=astro-ph.SR }}</ref> In the case of 38 Virginis, only one was discovered, which was designated ''b''.<ref name= ...

...mb|510x510px|Though differing in size and temperature, terrestrial planets of the Solar System were reported to have high Earth Similarity Index values – ...It was designed to be a scale from zero to one, with Earth having a value of one; this is meant to simplify planet comparisons from large databases. ...

{{short description|Temperature of a planet when approximated as radiating as a black body}} ...heated only by its parent [[star]]. In this model, the presence or absence of an [[atmosphere]] (and therefore any [[greenhouse effect]]) is irrelevant, ...

[[File:Pioneer 10-11 - P50 - fx.jpg|thumb|right|Helium vector magnetometer of [[Pioneer 10]] and [[Pioneer 11|11]] spacecraft]] ...ter boom of one of NASA's Voyager PIA21738.jpg|thumb|The magnetometer boom of a Voyager spacecraft, the boom allows the magnetometer to make observations ...

| caption = Artist's conception of the Kepler-46 system showing the two planets. Planet b transits its star, t ...ub>10</sub> of the relative abundance of iron in the measured star to that of the Sun.</ref> ...

...bout 11 times that of the Earth's and the Sun's diameter is about 10 times Jupiter's. The planets are not shown at the appropriate distance from the Sun.]] ...ource of information that expressed the way the people of the time thought of the Solar System. ...

...rover powered by a RTG on Mars. White RTG with fins is visible at far side of rover.]] ...s: Radioisotope Heater Units|publisher = U.S. Department of Energy, Office of Space and Defense Power Systems|date = December 1998|url = http://saturn.jp ...

{{Short description|The color of an astronomical object}} ...}}</ref> while the [[red giant]] and [[carbon star]] [[R Leporis]] has one of the largest, at +5.74.<ref>{{Cite web |title=VizieR |url=http://webviz.u-st ...

{{Short description|Moon of Orcus}} ...y2019"/>{{rp|page=67}} subtracting this angle from the ecliptic north pole of +90° gives the inclination with respect to the ecliptic: ''i'' {{=}} +90° – ...

{{short description|Rotation of a celestial body's orbital line of apsides}} {{About|rotation of the orbit of a celestial body|precession of the rotational axis|Axial precession|change in orbital inclination|Orbital ...

...flection of the vertical]] due to the [[gravity|gravitational attraction]] of a nearby mountain. Schiehallion was considered the ideal location after a s ...mb|350px|alt=A view across green fields to a mountain rising behind a line of trees. Its flanks are bare, and the mountain shows a distinctly symmetrical ...

...cademic.oup.com/mnras/article/527/4/11521/7511973 |journal=Monthly Notices of the Royal Astronomical Society |volume=527 |issue=4 |pages=11521–11538 |doi ...=http://www.solarviews.com/eng/neptune.htm |title=Neptune |publisher=Views of the Solar System |access-date=13 August 2007 |archive-url=https://web.archi ...