5041 Theotes
Discovery [1] | |
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Discovered by |
C. J. van Houten I. van Houten-G. T. Gehrels |
Discovery site | Palomar Obs. |
Discovery date | 19 September 1973 |
Designations | |
MPC designation | (5041) Theotes |
Pronunciation | /ˈθiːətiːz/ |
Named after |
Theotes [1] (Greek mythology) |
1973 SW1 · 1989 CJ2 | |
Jupiter trojan [1][2] Greek [3] · background [4] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 64.45 yr (23,540 d) |
Aphelion | 5.3688 AU |
Perihelion | 4.9991 AU |
5.1839 AU | |
Eccentricity | 0.0357 |
11.80 yr (4,311 d) | |
171.71° | |
0° 5m 0.6s / day | |
Inclination | 10.586° |
29.874° | |
107.15° | |
Jupiter MOID | 0.2858 AU |
TJupiter | 2.9650 |
Physical characteristics | |
Mean diameter | ±0.41 km 41.90[5] |
±0.01 h 6.52[6][lower-alpha 1] | |
±0.007 0.058[5] | |
C (assumed)[7] | |
10.6[5] 10.7[1][2][7] | |
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5041 Theotes (/ˈθiːətiːz/), provisional designation 1973 SW1, is a larger Jupiter trojan from the Greek camp, approximately 42 kilometers (26 miles) in diameter. It was discovered on 19 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory, California.[1] The dark Jovian asteroid belongs to the 120 largest Jupiter trojans and has a short rotation period of 6.5 hours.[7] It was named after herald Theotes from Greek mythology.[1]
Orbit and classification
Theotes is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of the Gas Giant's orbit in a 1:1 resonance .[3] It is also a non-family asteroid in the Jovian background population.[4]
It orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 10 months (4,311 days; semi-major axis of 5.18 AU). Its orbit has an eccentricity of 0.04 and an inclination of 11° with respect to the ecliptic.[2] The body's observation arc begins with its first observation, a precovery taken a Palomar in December 1953.[1]
Palomar–Leiden Trojan survey
While the discovery date aligns with the second Palomar–Leiden Trojan survey, Theotes has not received a "T-2" prefixed survey designation, which was assigned to the discoveries made by the fruitful collaboration between the Palomar and Leiden observatories in the 1960s and 1970s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroids.[8]
Naming
This minor planet was named from Greek mythology after Theotes, a Greek herald during the Trojan War.[1] The official naming citation was published by the Minor Planet Center on 16 May 1992 (M.P.C. 20163).[9]
Physical characteristics
Theotes is an assumed C-type asteroid, while the most prominent spectral type in the Jovian asteroid population is that of a D-type.[7]
Rotation period
In March 2013, a rotational lightcurve of Theotes was obtained from four nights of photometric observations by Daniel Coley at the Center for Solar System Studies in Landers, California. Lightcurve analysis gave a rotation period of ±0.01 hours with a brightness amplitude of 0.35 6.52magnitude (U=3-).[6][7][lower-alpha 1]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Theotes measures 41.90 kilometers in diameter and its surface has an albedo of 0.058,[5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a C-type asteroid of 0.057 and calculates a diameter of 40.33 kilometers based on an absolute magnitude of 10.7.[7]
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Notes
References
- 1 2 3 4 5 6 7 8 "5041 Theotes (1973 SW1)". Minor Planet Center. Retrieved 25 June 2018.
- 1 2 3 4 "JPL Small-Body Database Browser: 5041 Theotes (1973 SW1)" (2018-05-23 last obs.). Jet Propulsion Laboratory. Retrieved 25 June 2018.
- 1 2 "List of Jupiter Trojans". Minor Planet Center. 1 June 2018. Retrieved 25 June 2018.
- 1 2 "Asteroid (5041) Theotes – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 25 June 2018.
- 1 2 3 4 Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. arXiv:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 25 June 2018. (online catalog)
- 1 2 French, Linda M.; Stephens, Robert, D.; Coley, Daniel R.; Wasserman, Lawrence H.; Vilas, Faith; La Rocca, Daniel (October 2013). "A Troop of Trojans: Photometry of 24 Jovian Trojan Asteroids". The Minor Planet Bulletin. 40 (4): 198–203. Bibcode:2013MPBu...40..198F. ISSN 1052-8091. Retrieved 25 June 2018.
- 1 2 3 4 5 6 "LCDB Data for (5041) Theotes". Asteroid Lightcurve Database (LCDB). Retrieved 25 June 2018.
- ↑ "Minor Planet Discoverers". Minor Planet Center. 31 May 2018. Retrieved 25 June 2018.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 25 June 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- Asteroid 5041 Theotes at the Small Bodies Data Ferret
- 5041 Theotes at AstDyS-2, Asteroids—Dynamic Site
- 5041 Theotes at the JPL Small-Body Database