385695 Clete
| Discovery [1][2] | |
|---|---|
| Discovered by | C. Trujillo S. S. Sheppard |
| Discovery site | Las Campanas Obs. |
| Discovery date | 8 October 2005 |
| Designations | |
| (385695)2005 TO74 | |
Named after | Clete [1] (Greek mythology) |
| 2005 TO74 | |
| Neptune trojan·L4 [3][4] centaur [5]·distant [1] | |
| Orbital characteristics [5] | |
| Epoch27 April 2019 (JD2458600.5) | |
| Uncertainty parameter4 | |
| Observation arc | 10.02yr(3,661 d) |
| Aphelion | 31.575AU |
| Perihelion | 28.534 AU |
| 30.055 AU | |
| Eccentricity | 0.0506 |
| 164.77 yr (60,182 d) | |
| 286.36° | |
| 0° 0m21.6s/ day | |
| Inclination | 5.2546° |
| 169.40° | |
| 306.84° | |
| NeptuneMOID | 0.523 AU |
| Physical characteristics | |
| Dimensions | 97km[4] 100 km[6] |
| 23.2[6] | |
| 8.3[1][5] | |
385695 Clete,provisional designation2005 TO74,is aNeptune trojan,co-orbitalwith the ice giantNeptune,approximately 97 kilometers (60 miles) in diameter.[3][4]It was named afterClete,one of theAmazonsfromGreek mythology.[1]Theminor planetwas discovered on 8 October 2005, by American astronomersScott SheppardandChad TrujilloatLas Campanas Observatoryin Chile.[1]23 known Neptune trojans have already been discovered.[3]
Numbering and naming[edit]
This minor planet was named fromGreek mythologyafterClete,a member of theAmazons,an all-female warrior tribe that fought in theTrojan Waron the side of the Trojans against the Greek. Clete was one of the twelve followers of the Amazonian queenPenthesileaand went looking for her after she went missing during the war.[1]According to the queen's will, Clete sailed to Italy and founded the city of Clete. The officialnaming citationwas published by theMinor Planet Centeron 18 May 2019 (M.P.C.114955).[7]The naming follows the scheme already established with385571 Otrera,which is to name theseNeptune trojansafter figures related to the Amazons.[8]
Orbit and classification[edit]
Cleteorbits nearNeptune'sL4Lagrangian pointabout 60°ahead of Neptune and thus has the about same orbital period as Neptune. It orbits the Sun at a distance of 28.5–31.6AUonce every 164 years and 9 months (60,182 days;semi-major axisof 30.06 AU). Its orbit has aneccentricityof 0.05 and aninclinationof 5°with respect to theecliptic.[5]
The Neptune-resonanceshould keep it more than 19 AU from Neptune for 14,000 years.[2]As of 2016[update],it is 25.5 AU from Neptune.Cleteis located close to the boundary separating stable orbits from unstable ones, and it may be influenced by a secular resonance.[9]
Physical characteristics[edit]
Diameter[edit]
The discoverers estimate thatCletehas a mean-diameter of 100 kilometers based on amagnitudeof 23.2.[6]Based on a generic magnitude-to-diameter conversion, it measures approximately 97 kilometers in diameter using anabsolute magnitudeof 8.3 with an assumedalbedoof 0.09.[4][10]
References[edit]
- ^abcdefg"385695 Clete (2005 TO74)".Minor Planet Center.Retrieved3 June2019.
- ^ab"MPEC 2005-U97: 2005 TN74, 2005 TO74".Minor Planet Electronic Circular–Minor Planet Center.31 October 2005.Retrieved3 June2019.
- ^abc"List Of Neptune Trojans".Minor Planet Center.23 May 2019.Retrieved3 June2019.
- ^abcdJohnston, Wm. Robert (25 May 2019)."List of Known Trans-Neptunian Objects".Johnston's Archive.Retrieved3 June2019.
- ^abcd"JPL Small-Body Database Browser: 385695 Clete (2005 TO74)"(2013-10-06 last obs.).Jet Propulsion Laboratory.Retrieved3 June2019.
- ^abcLakdawalla, Emily (13 August 2010)."2008 LC15, the first Trojan asteroid discovered in Neptune's L5 point".The Planetary Society.Retrieved4 August2017.
- ^"MPC/MPO/MPS Archive".Minor Planet Center.Retrieved3 June2019.
- ^Ticha, J.; et al. (10 April 2018)."DIVISION F / Working Group for Small Body Nomenclature Working Group for Small Body Nomenclature. THE TRIENNIAL REPORT (2015 Sept 1 - 2018 Feb 15)"(PDF).IAU. p. 2.Retrieved25 August2018.
- ^Zhou, Li-Yong; Dvorak, Rudolf; Sun, Yi-Sui (January 2011). "The dynamics of Neptune Trojans - II. Eccentric orbits and observed objects".Monthly Notices of the Royal Astronomical Society.410(3): 1849–1860.arXiv:1007.5362.Bibcode:2011MNRAS.410.1849Z.doi:10.1111/j.1365-2966.2010.17566.x.S2CID119238700.
- ^"Asteroid Size Estimator".CNEOS/JPL.Retrieved4 August2017.
External links[edit]
- 385695 CleteatAstDyS-2, Asteroids—Dynamic Site
- 385695 Cleteat theJPL Small-Body Database
