3103 Eger
.png)
A three-dimensional model of 3103 Eger
based on its light curve |
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| Discovery | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered by | M. Lovas | ||||||||
| Discovery site | Piszkesteto | ||||||||
| Discovery date | 20 January 1982 | ||||||||
| Designations | |||||||||
|
Named after
|
Eger | ||||||||
| 1982 BB | |||||||||
| Apollo, Mars crosser | |||||||||
| Orbital characteristics | |||||||||
| Epoch 13 January 2016 (JD 2457400.5) | |||||||||
| Uncertainty parameter 0 | |||||||||
| Observation arc | 12495 days (34.21 yr) | ||||||||
| Aphelion | 1.9021 AU (284.55 Gm) | ||||||||
| Perihelion | 0.90673 AU (135.645 Gm) | ||||||||
| 1.4044 AU (210.10 Gm) | |||||||||
| Eccentricity | 0.35437 | ||||||||
| 1.66 yr (607.90 d) | |||||||||
|
Average orbital speed
|
40.496 km/s | ||||||||
| 208.62° | |||||||||
| 0° 35m 31.92s / day | |||||||||
| Inclination | 20.931° | ||||||||
| 129.792° | |||||||||
| 254.007° | |||||||||
| Earth MOID | 0.0778981 AU (11.65339 Gm) | ||||||||
| Jupiter MOID | 3.70058 AU (553.599 Gm) | ||||||||
| Jupiter Tisserand parameter | 4.613 | ||||||||
| Proper orbital elements | |||||||||
|
Proper eccentricity
|
0.325 | ||||||||
|
Proper inclination
|
22.364° | ||||||||
|
Proper mean motion
|
99.460 deg / yr | ||||||||
|
Proper orbital period
|
3.61955 yr (1322.039 d) |
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| Physical characteristics | |||||||||
| Dimensions | 1.5 km | ||||||||
|
Mean radius
|
0.75 km | ||||||||
| 5.7059 h (0.23775 d) | |||||||||
| 0.64 | |||||||||
|
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| E | |||||||||
| 15.38 | |||||||||
3103 Eger is an Apollo and Mars-crosser asteroid that was discovered in 1982, by Miklós Lovas. It was named after the city of Eger, Hungary. It has an albedo of 0.64, making it a highly reflective asteroid.
It has made and will continue to make many close approaches to Earth. Its closest so far occurred in August 6, 1996, when the asteroid passed 0.11509 AU (17.217 Gm) from Earth.
3103 Eger is the only asteroid besides 4 Vesta identified as the parent body for specific meteorites. 4 Vesta is the parent body for Howardite, Eucrite, and Diogenite meteorites, while 3103 Eger is the parent body for Aubrite meteorites. In this characteristic 3103 Eger is related spectroscopically to the 434 Hungaria type asteroids, which are a Hirayama-family of orbital types, and E-type asteroids which form a spectroscopical type.
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