1995 GJ
Template:Use dmy dates Script error: No such module "infobox".Script error: No such module "Check for unknown parameters".
1995 GJ might be a trans-Neptunian object and/or high-inclination cubewano from the Kuiper belt in the outermost region of the Solar System, and based on the calculated distance and brightness is assumed to be approximately Script error: No such module "convert". in diameter. It is a lost minor planet that has only been observed six times on the nights of 3–4 April 1995, by David Jewitt and Jun Chen at the Mauna Kea Observatory, Hawaii, using the UH88 telescope, and has not been observed ever since.[1][2] The object is estimated to have been discovered right at perihelion (closest approach to the Sun) at a distance of Script error: No such module "val". from the Sun.[3] On the night of discovery, the object is estimated to have been moving away from Earth at Template:No wrap with the uncertainty in the velocity being an unrealistic Template:No wrap (80% the speed of light).
Orbit
The nominal orbit of 1995 GJ suggests it orbits the Sun at a distance of 39–46 AU once every 281 years with an assumed eccentricity of 0.09 and an inclination of 23° with respect to the ecliptic. But 1995 GJ has the highest possible orbital uncertainty and thus very large uncertainties in the orbital elements.[3] With only a 1-day observation arc, the orbit is so poorly constrained as to be almost worthless. The eccentricity is listed as Template:No wrap,[3] even though realistically it will be less than 1.
Otherwise known for their low inclinations, this cubewano may be the first of its kind to have an inclination greater than 20°.[4] But as a one-night stand with only 6 observations,[3] 1995 GJ has numerous orbits that fit the uncertainties in the very small dataset. 1995 GJ could be a trans-Neptunian object, a centaur, or a much closer main belt asteroid 100 times smaller in diameter. As an example, Template:Mpl (when it had a one-day observation arc) was thought to be a potential trans-Neptunian dwarf planet, but is now known to be a small main belt asteroid.
Using the nominal orbit with the assumed eccentricity,[2] 1995 GJ may come to opposition around mid March of each year at an apparent magnitude of 22.9.
since 2018[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., the uncertainty in the object's distance from the Sun is an unrealistic ±Script error: No such module "convert"..[5]
| Date | Uncertainty in distance from the Sun |
|---|---|
| 1995-Apr | ±730 billion km |
| 1995-May | ±1 trillion km |
| 1996-Jul | ±10 trillion km |
| 2009-Jan | ±100 trillion km |
| 2026-Feb | ±200 trillion km |
References
<templatestyles src="Reflist/styles.css" />
- ↑ Script error: No such module "citation/CS1".()
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d Script error: No such module "citation/CS1". ([1] per 14 July 2012)
- ↑ Script error: No such module "citation/CS1".
- ↑ JPL Horizons: 1995 GJ (Soln.date: 2014-Feb-04)
Observer Location: @sun
Under "Table Settings" select "39. Range & range-rate". Uncertainty in distance (km) is RNG_3sigma
Cite error: <ref> tag with name "h" defined in <references> is not used in prior text.
<ref> tag with name "Brown-DP-list" defined in <references> is not used in prior text.Script error: No such module "Check for unknown parameters".
External links
- List Of Transneptunian Objects, Minor Planet Center
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidataTemplate:WikidataCheck
Template:Trans-Neptunian objects Script error: No such module "Navbox". Template:Authority control Template:Asbox