136 Austria

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136 Austria
000136-asteroid shape model (136) Austria.png
3D convex shape model of 136 Austria
Discovery [1]
Discovered by Johann Palisa
Discovery site Austrian Naval Obs.
Discovery date18 March 1874
Designations
(136) Austria
Named after
Austria
A874 FA; 1950 HT
main-belt [1] [2]  ·(inner)
background [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 141.11 yr (51,539 d)
Aphelion 2.4812 AU
Perihelion 2.0927 AU
2.2869 AU
Eccentricity 0.0849
3.46 yr (1,263 d)
102.82°
0° 17m 6s / day
Inclination 9.5788°
186.46°
2024-Feb-24
132.95°
Physical characteristics
Mean diameter
40.14±1.0  km [2]
40.14 km [4]
Mass 6.8×1016 kg
11.4969  h (0.47904  d) [2]
0.1459±0.007 [2]
0.1459 [4]
M [4]
9.69

    Austria (minor planet designation: 136 Austria) is a main-belt asteroid that was found by the prolific asteroid discoverer Johann Palisa on 18 March 1874, from the Austrian Naval Observatory in Pola, Istria. [5] It was his first asteroid discovery and was given the Latin name of his homeland.

    Based upon its spectrum, it is classified as an M-type spectrum, although Clark et al. (1994) suggest it may be more like an S-type asteroid. [6] It shows almost no absorption features in the near infrared, which may indicate an iron or enstatite chondrite surface composition. A weak hydration feature was detected in 2006. [7]

    Photometric observations of this asteroid at the European Southern Observatory in 1981 gave a light curve with a period of 11.5 ± 0.1 hours and a brightness variation of 0.40 in magnitude. [4] As of 2013, the estimated rotation period is 11.4969 [8] hours.

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    References

    1. 1 2 "136 Austria". Minor Planet Center. Retrieved 29 May 2018.
    2. 1 2 3 4 5 "JPL Small-Body Database Browser: 136 Austria" (2018-02-26 last obs.). Jet Propulsion Laboratory . Retrieved 29 May 2018.
    3. "Asteroid 136 Austria". Small Bodies Data Ferret. Retrieved 29 May 2018.
    4. 1 2 3 4 Schober, H. J. (January 1983), "Rotation periods and lightcurves of the asteroids 136 Austria and 238 Hypatia", Astronomy and Astrophysics, vol. 117, no. 2, pp. 362–364, Bibcode:1983A&A...117..362S.
    5. Albrecht, R.; et al. (July 2001), "Early asteroid research in Austria", Planetary and Space Science, vol. 49, no. 8, pp. 777–779, Bibcode:2001P&SS...49..777A, doi:10.1016/S0032-0633(01)00027-7.
    6. Clark, B. E.; et al. (March 1994), "Infrared Spectral Observations of Smaller (50 km) Main Belt S, K, and M Type Asteroids", Abstracts of the 25th Lunar and Planetary Science Conference, held in Houston, TX, 14–18 March 1994, pp. 265–266, Bibcode:1994LPI....25..265C.
    7. Hardersen, Paul S.; Gaffey, Michael J.; Abell, Paul A. (January 1983), "Near-IR spectral evidence for the presence of iron-poor orthopyroxenes on the surfaces of six M-type asteroids", Icarus, vol. 175, no. 1, pp. 141–158, Bibcode:2005Icar..175..141H, doi:10.1016/j.icarus.2004.10.017.
    8. Behrend, Raoul, Courbes de rotation d'astéroïdes et de comètes (in French), Observatoire de Genève , retrieved 30 March 2013