5144 Achates

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 2012-Mar-14
Aphelion 6.6242 AU (Q)
Perihelion 3.7895 AU (q)
5.2068 AU (a)
Eccentricity 0.27220
11.88 yr
32.550° (M)
Inclination 8.9028°
322.85°
331.41°
Physical characteristics
Dimensions 92km (IRAS)[1]
5.958 hr[1]
Albedo 0.0576[1]
14.09 to 17.84
8.90[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

    1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "JPL Small-Body Database Browser: 5144 Achates (1991 XX)" (2011-11-23 last obs). Jet Propulsion Laboratory. Retrieved 2012-04-06.
    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