astro.wikisort.org - Asteroid

(613490) 2006 RJ₁₀₃ is a Neptune trojan, first observed by the Sloan Digital Sky Survey Collaboration at Apache Point Observatory, New Mexico, on 12 September 2006.[2] It was the fifth and largest such body discovered, approximately 180 kilometers in diameter. As of 2016^[update], it is 30.3 AU from Neptune.

(613490) 2006 RJ₁₀₃

Discovery[1][2]
Discovered by	Sloan Digital Sky Srvy.
Discovery site	Apache Point Obs.
Discovery date	12 September 2006
Designations
MPC designation	2006 RJ103
Minor planet category	Neptune trojan L4[3] centaur[1] distant[2]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 3
Observation arc	14.15 yr (5,169 days)
Aphelion	30.862 AU
Perihelion	28.988 AU
Semi-major axis	29.925 AU
Eccentricity	0.0313
Orbital period (sidereal)	163.70 yr (59,793 days)
Mean anomaly	251.55°
Mean motion	0° 0m 21.6s / day
Inclination	8.1641°
Longitude of ascending node	120.86°
Argument of perihelion	33.563°
Physical characteristics
Dimensions	130 km (est. at 0.10)[4] 180 km[5]
Apparent magnitude	22.0[5]
Absolute magnitude (H)	7.5[1]

Orbit and classification

Neptune trojans are resonant trans-Neptunian objects in a 1:1 mean-motion orbital resonance with Neptune. These trojans have a semi-major axis and an orbital period very similar to Neptune's (30.10 AU; 164.8 years).

2006 RJ₁₀₃ belongs to the leading L₄ group, which follow 60° ahead Neptune's orbit. It orbits the Sun with a semi-major axis 29.925 AU of at a distance of 29.0–30.9 AU once every 163 years and 8 months (59,793 days). Its orbit has an eccentricity of 0.03 and an inclination of 8° with respect to the ecliptic.[1]

Physical characteristics

The discoverers estimate that 2006 RJ₁₀₃ has a mean-diameter of 180 kilometers based on a magnitude of 22.0.[5] Based on a generic magnitude-to-diameter conversion, it measures approximately 130 kilometers in diameter using an absolute magnitude of 7.5 with an assumed albedo of 0.10.[4]

Numbering and naming

Due to its orbital uncertainty, this minor planet has not been numbered and its official discoverers have not been determined.[1][2] If named, it will follow the naming scheme already established with 385571 Otrera, which is to name these objects after figures related to the Amazons, an all-female warrior tribe that fought in the Trojan War on the side of the Trojans against the Greek.[6]

References

External links

• AstDys-2 about 2006 RJ₁₀₃
• (613490) 2006 RJ103 at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• (613490) 2006 RJ103 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] 2006 RJ103

2006 RJ103 ist ein Neptun-Trojaner, der 2006 im Rahmen des Sloan Digital Sky Survey mit dem 2,5-m-Teleskop des Apache-Point-Observatoriums entdeckt wurde.[2] Er war der fünfte derartige Körper, der entdeckt wurde. Er hat dieselbe Bahnperiode wie Neptun und kreist auf dem Lagrangepunkt L4, 60° vor Neptun.[3]

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- [en] (613490) 2006 RJ103

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[ru] 2006 RJ103

2006 RJ103 — троянский астероид Нептуна, впервые наблюдавшийся в рамках обзора Sloan Digital Sky Survey в обсерватории Апачи-Пойнт, Нью-Мексико 12 сентября 2006 года.[3] Пятый и крупнейший из открытых объектов такого типа, обладает диаметром около 180 км. По состоянию на 2016 год находился на расстоянии 30,3 а.e. от Нептуна.

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