5370 Taranis

5370 Taranis
Discovery[1][2]
Discovered by Alain Maury
Discovery site Palomar
Discovery date 2 September 1986
Designations
MPC designation (1986) RA
Named after
 Taranis
MPO 328728
Orbital characteristics[3][1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 10811 days (29.60 yr)
Aphelion 5.44545 AU (814.628 Gm)
Perihelion 1.21321 AU (181.494 Gm)
3.32933 AU (498.061 Gm)
Eccentricity 0.635599
6.07 yr (2218.9 d)
290.541°
0° 9m 44.078s / day
Inclination 19.1291°
177.843°
161.223°
Earth MOID 0.219785 AU (32.8794 Gm)
Jupiter MOID 0.366578 AU (54.8393 Gm)
Jupiter Tisserand parameter 2.730
Physical characteristics
Dimensions 5.2−6.8 km (NEOWISE)[4]
Mean radius
 1.8 km
0.037 or 0.051[4]
15.2[1]

    5370 Taranis (or 1986 RA) is an Amor asteroid discovered on September 2, 1986, by Alain Maury at Palomar.[1] It is one of very few asteroids located in the 2:1 mean-motion resonance with Jupiter.[5] When at aphelion of 5.4 AU,[1] the object is roughly the same distance from the Sun as Jupiter is when Jupiter is at aphelion. The unstable resonance with Jupiter is expected to last roughly 7.3 million years.[5]

    It also is expected of being a dormant comet.[4] NEOWISE data suggests the object is 5.2−6.8 km in diameter.[4] On 10 September 2099 it will pass 0.1325 AU (19,820,000 km; 12,320,000 mi) from Earth.[1]

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 5370 Taranis (1986 RA)" (last observation: 2015-02-27; arc: 28.5 yr). Jet Propulsion Laboratory. Retrieved 13 April 2016.
    2. ↑ "Discovery Circumstances: Numbered Minor Planets (5001)-(10000)". IAU: Minor Planet Center. Retrieved 7 December 2008.
    3. ↑ "(5370) Taranis". AstDyS. Italy: University of Pisa. Retrieved 10 December 2008.
    4. 1 2 3 4 Mommert, M.; Harris, A. W.; Mueller, M. (2015). "ExploreNEOs VIII: Dormant Short-Period Comets in the Near-Earth Asteroid Population". The Astronomical Journal. 150 (4). Bibcode:2015AJ....150..106M. arXiv:1508.04116 Freely accessible. doi:10.1088/0004-6256/150/4/106.
    5. 1 2 Roig; Nesvorny, D.; Ferraz-Mello, S.; et al. (2002). "Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution". Monthly Notices of the Royal Astronomical Society. 335 (2): 417–431. Bibcode:2002MNRAS.335..417R. doi:10.1046/j.1365-8711.2002.05635.x.


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