5144 Achates

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5144 Achates
Discovery[1]
Discovered by Shoemaker, C. S.
Discovery site Palomar
Discovery date 2 December 1991
Designations
Named after
Achates
1991 XX
Jupiter Trojan[1]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 24409 days (66.83 yr)
Aphelion 6.6158 AU (989.71 Gm) (Q)
Perihelion 3.7940 AU (567.57 Gm) (q)
5.2049 AU (778.64 Gm) (a)
Eccentricity 0.27108 (e)
11.87 yr (4337.28 d)
148.95° (M)
0° 4m 58.804s / day (n)
Inclination 8.9013° (i)
322.83° (Ω)
331.41° (ω)
Earth MOID 2.77989 AU (415.866 Gm)
Jupiter MOID 0.572644 AU (85.6663 Gm)
Jupiter Tisserand parameter 2.902
Physical characteristics
Dimensions 92km (IRAS)[1]
Mean radius
45.955 ± 2.55 km
5.958 h (0.2483 d)[1]
0.0576 ± 0.007[1]
14.09 to 17.84
9.0[1]

5144 Achates (1991 XX) is a Jupiter Trojan discovered on December 2, 1991 by Shoemaker, C. S. at Palomar.

Photometric observations of this asteroid during 1996 were used to build a light curve showing a rotation period of 5.949 ± 0.014 hours with a brightness variation of 0.20 ± 0.01 magnitude.[2]

Of the 230+ Jupiter trojans with an absolute magnitude (H) brighter than 11, it currently has the most eccentric orbit.[3]

References[edit]

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 5144 Achates (1991 XX)" (2011-11-23 last obs). Jet Propulsion Laboratory. Retrieved 13 April 2016. 
  2. ^ Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; Hahn, Gerhard; Schober, Hans-Josef; Lahulla, Felix; Delbò, Marco; Lagerkvist, Claes-Ingvar (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal 141 (5): 170. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170. 
  3. ^ "JPL Small-Body Database Search Engine: orbital class (TJN) and H < 11 (mag)". JPL's Solar System Dynamics Group. Retrieved 2012-04-06. 

External links[edit]