3103 Eger

3103 Eger
Shape model of Eger from its lightcurve
Discovery
Discovered byM. Lovas
Discovery sitePiszkéstető
Discovery date20 January 1982
Designations
(3103) Eger
Named after
Eger
1982 BB
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc12495 days (34.21 yr)
Aphelion1.9021 AU (284.55 Gm)
Perihelion0.90673 AU (135.645 Gm)
1.4044 AU (210.10 Gm)
Eccentricity0.35437
1.66 yr (607.90 d)
208.62°
0° 35m 31.92s / day
Inclination20.931°
129.792°
254.007°
Earth MOID0.0778981 AU (11.65339 Gm)
Proper orbital elements[1][2]
0.325
22.364°
99.460 deg / yr
3.61955 yr
(1322.039 d)
Physical characteristics
1.5 km[1]
5.710156±0.000007 h[3]
0.64[1]
E
15.38[1]

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,[1] making it a highly reflective asteroid.

Description

Lightcurve-based 3D-model of Eger

It has made and will continue to make many close approaches to Earth. Its closest approach occurred on 6 August 1996, when the asteroid passed 0.11509 AU (17.217 Gm) from Earth.[1] The observed YORP value is (1.4±0.6)×10−8 rad d−2.[3]

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.

See also

References

  1. ^ a b c d e f g "3103 Eger". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3103. Retrieved 14 April 2016.
  2. ^ "(162058) 1997AE12". NEODyS. University of Pisa. Retrieved 25 November 2015.
  3. ^ a b Durech, J.; Vokrouhlický, D.; Baransky, A. R.; Breiter, S.; Burkhonov, O. A.; Cooney, W.; et al. (November 2012). "Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect". Astronomy and Astrophysics. 547: 9. arXiv:1210.2219. Bibcode:2012A&A...547A..10D. doi:10.1051/0004-6361/201219396.


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