15094 Polymele
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15094 Polymele /pɒlɪˈmiːliː/ is a primitive Jupiter trojan from the Greek camp, approximately 21 kilometers (13 miles) in diameter. It is a target of the Lucy mission with a close flyby planned to occur in September 2027.[9][13] It was discovered on 17 November 1999, by astronomers with the Catalina Sky Survey at Mount Lemmon Observatory, Arizona, in the United States. The P-type asteroid has a rotation period of 5.9 hours and highly flattened shape.[14][15] It was named after Polymele from Greek mythology, the wife of Menoetius and the mother of Patroclus.[1] In 2022, it was reported to have a natural satellite approximately 5 kilometers (3.1 miles) in diameter.[16]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | Catalina Sky Survey |
Discovery site | Catalina Station |
Discovery date | 17 November 1999 |
Designations | |
(15094) Polymele | |
Pronunciation | /pɒlɪˈmiːliː/[2] |
Named after | Polymele (Greek mythology)[1] |
1999 WB2 · 1997 WR57 | |
Jupiter trojan[1][3] (Greek camp)[4] | |
Orbital characteristics[3] | |
Epoch 25 February 2023 (JD 2460000.5) | |
Uncertainty parameter 0 | |
Earliest precovery date | 30 November 1951[1] |
Aphelion | 5.682 AU |
Perihelion | 4.679 AU |
5.180 AU | |
Eccentricity | 0.0968 |
11.79 yr (4,307 d) | |
44.314° | |
0° 5m 0.936s / day | |
Inclination | 12.981° |
50.319° | |
4.772° | |
Jupiter MOID | 0.2445 AU |
TJupiter | 2.940 |
Physical characteristics | |
Dimensions | 27.0 × 24.4 × 10.4 km[5] (± 2.0 × 1.6 × 1.6 km) |
Mean diameter | 21.075±0.136 km[6][7] |
Mean density | 0.7–1 g/cm3 (assumed)[5] |
5.8607±0.0005 h[8] | |
170.9° (wrt ecliptic)[5] | |
Pole ecliptic latitude | −80.9°±2.1°[5] |
Pole ecliptic longitude | 231.8°±4.5°[5] |
0.073[8] 0.091±0.017[3] | |
P[9] B–V = 0.652±0.065[10] V–R = 0.477±0.065[10] V–I = 0.799±0.068[10] | |
11.60[1][3][7][11][12] 11.691±0.002 (S/R)[8] | |
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