Discovery [1] | |
---|---|
Discovered by | C. Shoemaker |
Discovery site | Palomar Obs. |
Discovery date | 7 November 1991 |
Designations | |
(5143) Heracles | |
Pronunciation | /ˈhɛrəkliːz/ |
Named after | Ἡρακλῆς Hēraklēs (Greek mythology)[2] |
1991 VL · 1962 PG | |
Apollo · NEO [1][3] | |
Adjectives | Heraclean /hɛrəˈkliːən/[4] |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 63.58 yr (23,224 days) |
Earliest precovery date | 30 November 1953 |
Aphelion | 3.2494 AU |
Perihelion | 0.4174 AU |
1.8334 AU | |
Eccentricity | 0.7723 |
2.48 yr (907 days) | |
93.744° | |
0° 23m 49.2s / day | |
Inclination | 9.0330° |
309.52° | |
227.77° | |
Known satellites | 1[5][6][7] (0.6±0.3 km; orb. 17 h) |
Earth MOID | 0.0584 AU · 22.8 LD |
Physical characteristics | |
Dimensions | 3.26 km[8] 3.28±0.09 km[9] 3.41 km[10] 4.5±0.7 km[5] 4.83 km (taken)[11] 4.833 km[12] 4.843±0.378 km[13][14] |
2.704±0.002 h[15][a] 2.7060±0.0002 h[16] 2.706±0.001 h[17] 2.7063 h[11] 2.7065±0.0005 h[5] 3.0149±0.0002 h[18] 5.990±0.0111 h[19] | |
0.1481[12] 0.20±0.05[5] 0.227±0.054[13][14] 0.38[10] 0.40±0.22[20] 0.412±0.030[9] 0.42[8] | |
SMASS = O [1] Q [21] · C [22] · O [11] V–R = 0.420±0.070[5] | |
13.786±0.004 (R)[19] · 13.8[13] · 14.0[1][8][9][22] · 14.10±0.04[5] · 14.27[11][23] · 14.27±0.09[12] · 14.52±0.02 (R)[16] | |
5143 Heracles(provisional designation 1991 VL) is a highly eccentric, rare-type asteroid and synchronous binary system, classified as near-Earth object of the Apollo group, approximately 4.8 kilometers in diameter. The asteroid was discovered on 7 November 1991, by American astronomer Carolyn Shoemaker at Palomar Observatory in California, United States.[3] It is named for the Greek divine hero Heracles.[2] It has an Earth minimum orbit intersection distance of 0.058 AU (8.7 million km) and is associated with the Beta Taurids daytime meteor shower.[24]
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