Английская Википедия:(457175) 2008 GO98

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Шаблон:Mp, provisional designation Шаблон:Mp with cometary number 362P, is a Jupiter family comet in a quasi-Hilda orbit within the outermost regions of the asteroid belt. It was discovered on 8 April 2008, by astronomers of the Spacewatch program at Kitt Peak National Observatory near Tucson, Arizona, in the United States. This presumably carbonaceous body has a diameter of approximately Шаблон:Convert and rotation period of 10.7 hours.

Orbit and classification

Шаблон:Mp is classified as a member of the dynamical Hilda group, as well as a Jupiter family that shows clear cometary activity, which has also been described as a "quasi-Hilda comet". Orbital backward integration suggests that it might have been a centaur or trans-Neptunian object that ended its dynamical evolution as a quasi-Hilda comet. It may have reached the belt during the last few hundred years.

It orbits the Sun in the outer asteroid belt at a distance of 2.9–5.1 AU once every 7 years and 11 months (2,883 days; semi-major axis of 3.96 AU). Its orbit has an eccentricity of 0.28 and an inclination of 16° with respect to the ecliptic. The body's observation arc begins with a precovery taken by the Sloan Digital Sky Survey in October 2001, more than 5 years prior to its official discovery observation by Spacewatch.

Although Шаблон:Mp orbits in the asteroid belt, it has a Jupiter Tisserand's parameter (T_J) of 2.926, just below Jewitt's threshold of 3, which serves as a distinction between the main-belt asteroids (T_J larger than 3) and the Jupiter-family comets (T_J between 2 and 3).

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 16 February 2016 (Шаблон:Small). As of 2020, it has not been named.

Physical characteristics

Шаблон:Mp is an assumed C-type asteroid.

Rotation period

In August 2017, a rotational lightcurve of Шаблон:Mp was obtained from photometric observations by American astronomer Brian Warner at the Palmer Divide Station Шаблон:Obscode in California. Lightcurve analysis gave a rotation period of Шаблон:Val hours with a small brightness amplitude of 0.12 magnitude (Шаблон:Small).Шаблон:Efn

Diameter and albedo

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous body of 0.057 and calculates a diameter of 14.64 kilometers based on an absolute magnitude of 12.9. Other estimates, taking into account several published magnitude measurements and a large range of albedo assumptions, estimate a diameter range of 5.5 to 24.7 kilometers.

External links

• COMETARY ACTIVITY IN (457175) 2008 GO98, Minor Planet Electronic Circular, Minor Planet Center
• It's an Asteroid, It's a Comet, It's... well, Both for Now!, Catalina Sky Survey, Lunar and Planetary Laboratory
• Cometary activity in (457175) 2008 GO98, The Virtual Telescope, 23 August 2017
• Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
• Discovery Circumstances: Numbered Minor Planets (455001)-(460000) – Minor Planet Center
• Шаблон:AstDys
• Шаблон:JPL small body