385695 Clete

Last updated
385695 Clete
Discovery  [1] [2]
Discovered by C. Trujillo
S. S. Sheppard
Discovery site Las Campanas Obs.
Discovery date8 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]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 4
Observation arc 10.02 yr (3,661 d)
Aphelion 31.575 AU
Perihelion 28.534 AU
30.055 AU
Eccentricity 0.0506
164.77 yr (60,182 d)
286.36°
0° 0m 21.6s / day
Inclination 5.2546°
169.40°
306.84°
Neptune  MOID 0.523 AU
Physical characteristics
Dimensions97  km [4]
100 km [6]
23.2 [6]
8.3 [1] [5]

    385695 Clete, provisional designation 2005 TO74, is a Neptune trojan, co-orbital with the ice giant Neptune, approximately 97 kilometers (60 miles) in diameter. [3] [4] It was named after Clete, one of the Amazons from Greek mythology. [1] The minor planet was discovered on 8 October 2005, by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory in Chile. [1] 23 known Neptune trojans have already been discovered. [3]

    Contents

    Numbering and naming

    This minor planet was named from Greek mythology after Clete, a member of the Amazons, an all-female warrior tribe that fought in the Trojan War on the side of the Trojans against the Greek. Clete was one of the twelve followers of the Amazonian queen Penthesilea and 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 official naming citation was published by the Minor Planet Center on 18 May 2019 ( M.P.C. 114955). [7] The naming follows the scheme already established with 385571 Otrera, which is to name these Neptune trojans after figures related to the Amazons. [8]

    Orbit and classification

    Clete orbits near Neptune's L4 Lagrangian point about 60° ahead of Neptune and thus has the about same orbital period as Neptune. It orbits the Sun at a distance of 28.5–31.6  AU once every 164 years and 9 months (60,182 days; semi-major axis of 30.06 AU). Its orbit has an eccentricity of 0.05 and an inclination of 5° with respect to the ecliptic. [5]

    The Neptune-resonance should keep it more than 19 AU from Neptune for 14,000 years. [2] As of 2016, it is 25.5 AU from Neptune. Clete is located close to the boundary separating stable orbits from unstable ones, and it may be influenced by a secular resonance. [9]

    Physical characteristics

    Diameter

    The discoverers estimate that Clete has a mean-diameter of 100 kilometers based on a magnitude of 23.2. [6] Based on a generic magnitude-to-diameter conversion, it measures approximately 97 kilometers in diameter using an absolute magnitude of 8.3 with an assumed albedo of 0.09. [4] [10]

    Related Research Articles

    <span class="nowrap">(612243) 2001 QR<sub>322</sub></span>

    (612243) 2001 QR322, prov. designation: 2001 QR322, is a minor planet and the first Neptune trojan discovered, by American astronomer Marc Buie of the Deep Ecliptic Survey at Cerro Tololo Observatory in Chile on 21 August 2001. It orbits ahead of Neptune at its L4 Lagrangian point and measures approximately 132 kilometers (82 miles) in diameter.

    385571 Otrera, provisional designation 2004 UP10, is a Neptune trojan leading Neptune's orbit in the outer Solar System. It was discovered by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory on 16 October 2004. It measures approximately 100 kilometers in diameter and was the second such body to be discovered after 2001 QR322.

    <span class="mw-page-title-main">Neptune trojan</span> Asteroid orbiting the Sun near one of the stable Lagrangian points of Neptune

    Neptune trojans are bodies that orbit the Sun near one of the stable Lagrangian points of Neptune, similar to the trojans of other planets. They therefore have approximately the same orbital period as Neptune and follow roughly the same orbital path. Thirty-one Neptune trojans are currently known, of which 27 orbit near the Sun–Neptune L4 Lagrangian point 60° ahead of Neptune and four orbit near Neptune's L5 region 60° behind Neptune. The Neptune trojans are termed 'trojans' by analogy with the Jupiter trojans.

    2005 TN53 is an inclined Neptune trojan leading Neptune's orbit in the outer Solar System, approximately 80 kilometers in diameter. It was first observed on 7 October 2005, by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory in the Atacama desert of Chile. It was the third such body to be discovered, and the first with a significant orbital inclination, which showed that the population as a whole is very dynamically excited.

    (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. It was the fifth and largest such body discovered, approximately 180 kilometers in diameter. As of 2016, it is 30.3 AU from Neptune.

    2146 Stentor is a Jupiter trojan from the Greek camp, approximately 51 kilometers in diameter. It was discovered on 24 October 1976, by Danish astronomer Richard Martin West at the ESO's La Silla Observatory in Chile. The dark Jovian asteroid has a rotation period of 16.4 hours and belongs to the 100 largest Jupiter trojans. It was named after Stentor from Greek mythology, a Herald of the Greeks during the Trojan War.

    <span class="mw-page-title-main">3391 Sinon</span>

    3391 Sinon is a mid-sized Jupiter trojan from the Greek camp, approximately 40 kilometers in diameter. It was discovered on 18 February 1977, by Japanese astronomers Hiroki Kosai and Kiichirō Furukawa at the Kiso Observatory in Japan. The dark Jovian asteroid has a rotation period of 8.1 hours and likely an elongated shape. It was named after the hero Sinon from Greek mythology.

    5126 Achaemenides is a Jupiter trojan from the Greek camp, approximately 50 kilometers in diameter. It was discovered on 1 February 1989, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The dark Jovian asteroid belongs the 100 largest Jupiter trojans and has a long rotation period of 32.4 hours. It was named after one of Odysseus's crew members, Achaemenides, from Greek mythology.

    '4501 Eurypylos is a Jupiter trojan from the Greek camp, approximately 46 kilometers in diameter. It was discovered on 4 February 1989 by Belgian astronomer Eric Elst at ESO's La Silla Observatory in Chile. The dark Jovian asteroid has a short rotation period of 6.1 hours. It was named after the Thessalian king Eurypylus from Greek mythology.

    4828 Misenus is a larger Jupiter trojan from the Trojan camp, approximately 46 kilometers in diameter. It was discovered on 11 September 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The dark Jovian asteroid has a rotation period of 12.9 hours. It was named after Aeneas' trumpeter, Misenus, from Greek mythology.

    9142 Rhesus is a larger Jupiter trojan from the Trojan camp, approximately 42 kilometers in diameter. It was discovered during the third Palomar–Leiden Trojan survey in 1977, and later named after King Rhesus from Greek mythology. The dark D-type asteroid has a rotation period of 7.3 hours.

    3794 Sthenelos is a mid-sized Jupiter trojan from the Greek camp, approximately 40 kilometers in diameter. It was discovered on 12 October 1985, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The presumed C-type asteroid has a rotation period of 12.9 hours. It was named after the Greek warrior Sthenelus from Greek mythology.

    11252 Laërtes ( lay-UR-teez), provisional designation 1973 SA2, is a mid-sized Jupiter trojan from the Greek camp, approximately 41 kilometers (25 miles) in diameter. It was discovered during a follow-up campaign of the Palomar–Leiden survey in 1973, and named after the King Laërtes from Greek mythology. The dark Jovian asteroid has a rotation period of 9.2 hours.

    (527604) 2007 VL305, provisional designation 2007 VL305, is an inclined Neptune trojan that shares Neptune's orbit in the L4 Lagrangian point. It was discovered on 4 November 2007, by astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica at the Apache Point Observatory in New Mexico, United States, although images from 2005 have also been recovered. It measures approximately 160 kilometers in diameter and was the sixth Neptune trojan to be discovered. As of 2016, it is 34.1 AU from Neptune.

    5119 Imbrius, provisional designation:1988 RA1, is a Jupiter trojan from the Trojan camp, approximately 49 kilometers (30 mi) in diameter. It was discovered on 8 September 1988 by Danish astronomer Poul Jensen at the Brorfelde Observatory near Holbæk, Denmark. The dark Jovian asteroid has a rotation period of 12.8 hours. It was numbered in March 1992, and named from Greek mythology after Imbrius, who was killed by Greek archer Teucer during the Trojan War.

    16560 Daitor is a large Jupiter trojan from the Trojan camp, approximately 44 kilometers in diameter. It was discovered on 2 November 1991, by Belgian astronomer Eric Elst at the La Silla site of the European Southern Observatory in Chile. The carbonaceous C-type asteroid is one of the largest Jupiter trojans with an unknown rotation period. It was named after the Trojan warrior Daitor from Greek mythology.

    2008 LC18 is a Neptune trojan first observed on 7 June 2008 by American astronomers Scott Sheppard and Chad Trujillo using the Subaru telescope at Mauna Kea Observatories on Hawaii, United States. It was the first object found in Neptune's trailing L5 Lagrangian point and measures approximately 100 kilometers in diameter.

    2004 KV18 is an eccentric Neptune trojan trailing Neptune's orbit in the outer Solar System, approximately 70 kilometers in diameter. It was first observed on 24 May 2004, by astronomers at the Mauna Kea Observatories on Hawaii, United States. It was the eighth Neptune trojan identified and the second in Neptune's L5 Lagrangian point.

    <span class="nowrap">(316179) 2010 EN<sub>65</sub></span>

    (316179) 2010 EN65 is a trans-Neptunian object orbiting the Sun. However, with a semi-major axis of 30.8 AU, the object is actually a jumping Neptune trojan, co-orbital with Neptune, as the giant planet has a similar semi-major axis of 30.1 AU. The body is jumping from the Lagrangian point L4 into L5 via L3. As of 2016, it is 54 AU from Neptune. By 2070, it will be 69 AU from Neptune.

    <span class="mw-page-title-main">16974 Iphthime</span>

    16974 Iphthime (; prov. designation: 1998 WR21) is a Jupiter trojan and a binary system from the Greek camp, approximately 57 kilometers (35 miles) in diameter. It was discovered on 18 November 1998, by astronomers with the Lincoln Near-Earth Asteroid Research at the ETS Test Site in Socorro, New Mexico. The dark Jovian asteroid belongs to the 80 largest Jupiter trojans and has a notably slow rotation of 78.9 hours. It was named after Iphthime from Greek mythology. The discovery of its companion by Hubble Space Telescope was announced in March 2016.

    References

    1. 1 2 3 4 5 6 7 "385695 Clete (2005 TO74)". Minor Planet Center. Retrieved 3 June 2019.
    2. 1 2 "MPEC 2005-U97 : 2005 TN74, 2005 TO74". Minor Planet Electronic Circular–Minor Planet Center. 31 October 2005. Retrieved 3 June 2019.
    3. 1 2 3 "List Of Neptune Trojans". Minor Planet Center. 23 May 2019. Retrieved 3 June 2019.
    4. 1 2 3 4 Johnston, Wm. Robert (25 May 2019). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 3 June 2019.
    5. 1 2 3 4 "JPL Small-Body Database Browser: 385695 Clete (2005 TO74)" (2013-10-06 last obs.). Jet Propulsion Laboratory . Retrieved 3 June 2019.
    6. 1 2 3 Lakdawalla, Emily (13 August 2010). "2008 LC15, the first Trojan asteroid discovered in Neptune's L5 point". The Planetary Society. Retrieved 4 August 2017.
    7. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 June 2019.
    8. ↑ 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. Retrieved 25 August 2018.
    9. ↑ 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. S2CID   119238700.
    10. ↑ "Asteroid Size Estimator". CNEOS/JPL. Retrieved 4 August 2017.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.