5041 Theotes

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5041 Theotes
Discovery [1]
Discovered byC. J. van Houten
I. van Houten-G.
T. Gehrels
Discovery sitePalomar Obs.
Discovery date19 September 1973
Designations
(5041) Theotes
Pronunciation/θiːˈoʊtiːz/
Named after
Θοώτης Thoōtēs[1]
(Greek mythology)
Alternative designations
1973 SW1 · 1989 CJ2
Minor planet category
Jupiter trojan [1][2]
Greek [3] · background [4]
AdjectivesTheotetian /θiːəˈtiːʃən/
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc64.45 yr (23,540 d)
Aphelion5.3688 AU
Perihelion4.9991 AU
5.1839 AU
Eccentricity0.0357
11.80 yr (4,311 d)
171.71°
0° 5m 0.6s / day
Inclination10.586°
29.874°
107.15°
Jupiter MOID0.2858 AU
TJupiter2.9650
Physical characteristics
Mean diameter
41.90±0.41 km[5]
6.52±0.01 h[6][a]
0.058±0.007[5]
C (assumed)[7]
Absolute magnitude (H)
10.6[5]
10.7[1][2][7]

5041 Theotes /θiːˈoʊtiːz/ is a mid-sized 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]

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 (see Trojans in astronomy).[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 'Theotes' after the herald of Menestheus in Homer's Iliad.[1] The naming citation was published by the Minor Planet Center on 16 May 1992 (M.P.C. 20163).[9]

Menustheus' herald is actually Thootes.[10] The 'e' of 'Theotes' follows a misspelling in a German translation of the Iliad[11] that was retained in subsequent Swedish and Dutch translations.

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 6.52±0.01 hours with a brightness amplitude of 0.35 magnitude (U=3-).[6][7][a]

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]

100+ largest Jupiter trojans

Notes[]

  1. ^ Jump up to: a b Lightcurve plot of (5041) Theotes from March 2013 by Daniel Coley at the Center for Solar System Studies (U80). Quality code is 2+ (lightcurve rating at CS3). Summary figures at the LCDB and CS3.

References[]

  1. ^ Jump up to: a b c d e f g "5041 Theotes (1973 SW1)". Minor Planet Center. Retrieved 25 June 2018.
  2. ^ Jump up to: a b c d "JPL Small-Body Database Browser: 5041 Theotes (1973 SW1)" (2018-05-23 last obs.). Jet Propulsion Laboratory. Retrieved 25 June 2018.
  3. ^ Jump up to: a b "List of Jupiter Trojans". Minor Planet Center. 1 June 2018. Retrieved 25 June 2018.
  4. ^ Jump up to: a b "Asteroid (5041) Theotes – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 25 June 2018.
  5. ^ Jump up to: a b c d 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. S2CID 119101711. Retrieved 25 June 2018. (online catalog)
  6. ^ Jump up to: a b 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.
  7. ^ Jump up to: a b c d e f "LCDB Data for (5041) Theotes". Asteroid Lightcurve Database (LCDB). Retrieved 25 June 2018.
  8. ^ "Minor Planet Discoverers". Minor Planet Center. 31 May 2018. Retrieved 25 June 2018.
  9. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 25 June 2018.
  10. ^ Θοώτης. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project
  11. ^ E.g. Iohann Heinrich Voss, Homers Ilias, Cantos I–XII, p. 314 in the 3nd (1806) edition, Tübingen

External links[]

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