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...msu.su/groups/cluster/gcvs/gcvs/iii/iii.dat |date=2017-06-20 }}, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line December 8, 2008.</ref> ...LMA]]. The primary is surrounded by a dust disk with a radius of 11&nbsp;[[astronomical unit]]s and the secondary disk has a similar inclination and size. The disk ...

{{Short description|The color of an astronomical object}} ...f the [[Logarithmic scale|logarithmic magnitude scale]], in which brighter objects have smaller (more negative) magnitudes than dimmer ones. For comparison, t ...

...471 | title = The Eclipsing Precataclysmic Binary RR Caeli | journal = The Astronomical Journal | volume = 116 | issue = 2 | pages = 908–916 | year = 1998 | bibcod ...6..919M | arxiv = astro-ph/0702005| journal = Monthly Notices of the Royal Astronomical Society | volume = 376 | issue = 2 | pages = 919–928| year = 2007 | doi-acc ...

| work = Central Bureau for Astronomical Telegrams | publisher = [[International Astronomical Union]] ...

...emi-major axes as objects hop between resonances. The orbital poles of the objects circle that of the Solar System's [[Laplace plane]], which at large semi-ma ...Nine.png|thumb|260px|Secular evolution of eTNOs induced by Planet Nine for objects with semi-major axis of 250 AU.<ref name="Beust_2016" /><ref name="Batygin_ ...

{{Short description|Hypothetical object}} '''Antimatter comets''' and '''antimatter meteoroids''' are hypothetical [[comet]]s and [[meteoroid]]s composed solely of [[antimatter]] instead of ...

...cle]]s to relativistic energies might take place in rotating astrophysical objects (see also [[Fermi acceleration]]). It is strongly believed that [[active ga ...f the magnetic field is rotating (which is the case for such astrophysical objects), the particles will inevitably undergo [[centrifugal force|centrifugal]] a ...

...–215 in The Henry Draper Memorial, Annie J. Cannon, ''Journal of the Royal Astronomical Society of Canada'' '''9''', #5 (May–June 1915), pp. 203–215, {{bibcode|191 {{OrbitboxPlanet hypothetical ...

...confirmed to exist in 2018.<ref name="Feng2018"/> It orbits at around 30 [[Astronomical unit|AU]] (almost as far as [[Neptune]] from the Sun) with a period of arou ...d to detect an orbiting object. These observations further constrained the hypothetical object to be 5–20 times the mass of Jupiter, orbiting between 10 and 20 AU ...

{{short description|Astronomical object not gravitationally bound to a star}} An '''interstellar object''' is an [[astronomical object]] (such as an [[asteroid]], a [[comet]], or a [[rogue planet]], but ...

...e object's unusually high [[proper motion]] while searching for [[Nemesis (hypothetical star)#Past, current, and pending searches for Nemesis|potential binary comp As of 2003, the [[International Astronomical Union]] considers an object with a mass above {{Jupiter mass|13|jup=y}}, ca ...

...microorganisms into space to be used as [[introduced species]] on other [[astronomical object]]s. ...[[Kepler mission]] that will identify nearby star systems with habitable [[astronomical object]]s. Alternatively, directed panspermia may aim at star-forming inter ...

...e=26 December 2017}}</ref> It aims to discover new [[brown dwarf]]s, faint objects that are less massive than stars, some of which might be among the [[List o ...he same patch of sky at different times. In addition to Planet Nine, other objects of interest{{spaced ndash}}such as undiscovered nearby brown dwarfs{{spaced ...

| aphelion = 52000 [[Astronomical unit|AU]] (inbound)<br/>13000 AU (outbound) At the time of discovery it was 7.2&nbsp;[[Astronomical unit|AU]] from the Sun and located in the [[constellation]] [[Lepus (conste ...

{{Short description|Hypothetical Solar System planet}} {{About|the hypothetical planet first suggested in 2014|the dwarf planet previously classified as th ...

...ly form of [[Cave painting|cave markings]] and drawings, [[calendar]]s and astronomical symbols. Then books and written records became the main source of informati ===Pythagorean astronomical system=== ...

| semimajor = {{val|−1.2723|0.0001|fmt=none|u=AU}}{{efn|1=Objects on hyperbolic trajectories have negative semimajor axis, giving them a posi ...dence for torque and disc-like shape|journal= Monthly Notices of the Royal Astronomical Society|year= 2019|volume= 489|issue= 3|pages= 3003–3021|doi= 10.1093/mnras ...

{{Short description|Hypothetical black hole formed soon after the Big Bang}} In [[cosmology]], '''primordial black holes''' ('''PBHs''') are hypothetical [[black hole]]s that formed soon after the [[Big Bang]]. In the [[inflation ...

....2P |publisher=[[International Astronomical Union]] / [[Central Bureau for Astronomical Telegrams]] |place=Cambridge, MA |via=[[Harvard University|Harvard U.]] |ur ...."<ref name=IAU-2020-06-23>{{cite press release |publisher=[[International Astronomical Union]] |date=23 June 2020 |title=IAU approves name of target of first NASA ...

|journal=Quarterly Journal of the Royal Astronomical Society ...nal|last=Ray |first=T. P. |title=Stoney's Fundamental Units |journal=Irish Astronomical Journal |volume=15 |page=152 |year=1981 |bibcode=1981IrAJ...15..152R}}</ref ...