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3850 Peltier, provisional designation 1986 TK2, is a Florian asteroid and suspected interloper from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 7 October 1986, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station, near Flagstaff, Arizona.[6] The asteroid was named after American amateur astronomer Leslie Peltier.[2]

3850 Peltier
Discovery [1]
Discovered byE. Bowell
Discovery siteAnderson Mesa Stn.
Discovery date7 October 1986
MPC designation(3850) Peltier
Named after
Leslie Peltier
(American amateur astronomer)[2]
1986 TK2 · 1949 PC
1969 OC1 · 1979 OX13
1982 OW
main-belt · Flora[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc47.47 yr (17,339 days)
Aphelion2.5967 AU
Perihelion1.8718 AU
2.2342 AU
3.34 yr (1,220 days)
0° 17m 42.36s / day
Physical characteristics
Dimensions4.00 km (calculated)[3]
2.4287±0.0002 h[a]
2.4289±0.0001 h[4]
0.4 (assumed)[3]
SMASS = V [1] · V[3]
13.6[1][3] · 13.62±0.37[5]

Orbit and classificationEdit

In the SMASS taxonomy, Peltier is a V-type asteroid but possesses the orbital characteristics of a member of the Flora family, which is one of the largest groups of stony S-type asteroids in the main-belt. It is therefore thought to be an unrelated interloper that does not origin from the Flora family's parent body. Peltier orbits the Sun in the inner main-belt at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,220 days). Its orbit has an eccentricity of 0.16 and an inclination of 5° with respect to the ecliptic.[1] In 1949, it was first identified as 1949 PC at Johannesburg. The body's observation arc begins at Crimea-Nauchnij in 1979, when it was identified as 1979 OX13, 10 years prior to its official discovery observation at Anderson Mesa.[6]

Physical characteristicsEdit

Rotation periodEdit

A rotational lightcurve of Peltier was obtained by Czech astronomer Petr Pravec at Ondřejov Observatory in October 2006.[b] Lightcurve analysis gave a rotation period of 2.4287 hours with a brightness variation of 0.09 magnitude (U=2).[a] In December 2013, photometric observations by Australian amateur astronomer Julian Oey gave a concurring period of 2.4289 hours and an amplitude of 0.10 magnitude (U=3).[4]

Diameter and albedoEdit

Peltier has not been observed by any space-based surveys such as the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, or NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for V-type asteroids of 0.40 and calculates a diameter of 4.00 kilometers using an absolute magnitude of 13.6.[3]


This minor planet was named in memory of American amateur astronomer Leslie Peltier (1900–1980), who has discovered 12 comets and several novae including Nova Herculis 1963.[2] Naming citation was provided by David H. Levy and published by the MPC on 20 May 1989 (M.P.C. 14633).[7]


  1. ^ a b Pravec (2013) web: rotation period 2.4287±0.0002 hours with a brightness amplitude of 0.09 mag. Summary figures for (3850) Peltier at Collaborative Asteroid Lightcurve Link (CALL) and Pravec, P.; Wolf, M.; Sarounova, L. (2013)
  2. ^ Rotational lightcurve plot of (3850) Peltier by Petr Pravec, Ondrejov Asteroid Photometry Project


  1. ^ a b c d e "JPL Small-Body Database Browser: 3850 Peltier (1986 TK2)" (2017-01-27 last obs.). Jet Propulsion Laboratory. Retrieved 19 June 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(3850) Peltier". Dictionary of Minor Planet Names – (3850) Peltier. Springer Berlin Heidelberg. pp. 326–327. doi:10.1007/978-3-540-29925-7_3842. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (3850) Peltier". Asteroid Lightcurve Database (LCDB). Retrieved 5 February 2017.
  4. ^ a b Oey, Julian; Vilagi, J.; Gajdos, S.; Kornos, L.; Galad, A. (September 2007). "Light curve Analysis of 8 Asteroids from Leura and Other Collaborating Observatories". The Minor Planet Bulletin. 34 (3): 81–83. Bibcode:2007MPBu...34...81O. ISSN 1052-8091. Retrieved 5 February 2017.
  5. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 5 February 2017.
  6. ^ a b "3850 Peltier (1986 TK2)". Minor Planet Center. Retrieved 5 February 2017.
  7. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 February 2017.

External linksEdit