136 Austria

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.[6] It was his first asteroid discovery and was given the Latin name of his homeland.

136 Austria
Discovery [1]
Discovered byJohann Palisa
Discovery siteAustrian Naval Obs.
Discovery date18 March 1874
Designations
(136) Austria
Pronunciation/ˈɔːstriə/[2]
Named after
Austria
1950 HT
main-belt [1][3] · (inner)
background [4]
Orbital characteristics [3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc141.11 yr (51,539 d)
Aphelion2.4812 AU
Perihelion2.0927 AU
2.2869 AU
Eccentricity0.0849
3.46 yr (1,263 d)
102.82°
0° 17m 6s / day
Inclination9.5788°
186.46°
132.95°
Physical characteristics
Mean diameter
40.14±1.0 km[3]
40.14 km[5]
Mass6.8×1016 kg
11.4969 h (0.47904 d)[3]
0.1459±0.007[3]
0.1459[5]
M[5]
9.69

    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.[7] 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.[8]

    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.[5] As of 2013, the estimated rotation period is 11.4969[9] hours.

    References
    1. "136 Austria". Minor Planet Center. Retrieved 29 May 2018.
    2. "Austria". Lexico UK Dictionary. Oxford University Press.
    3. "JPL Small-Body Database Browser: 136 Austria" (2018-02-26 last obs.). Jet Propulsion Laboratory. Retrieved 29 May 2018.
    4. "Asteroid 136 Austria". Small Bodies Data Ferret. Retrieved 29 May 2018.
    5. Schober, H. J. (January 1983), "Rotation periods and lightcurves of the asteroids 136 Austria and 238 Hypatia", Astronomy and Astrophysics, 117 (2), pp. 362–364, Bibcode:1983A&A...117..362S.
    6. Albrecht, R.; et al. (July 2001), "Early asteroid research in Austria", Planetary and Space Science, 49 (8), pp. 777–779, Bibcode:2001P&SS...49..777A, doi:10.1016/S0032-0633(01)00027-7.
    7. 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.
    8. 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, 175 (1), pp. 141–158, Bibcode:2005Icar..175..141H, doi:10.1016/j.icarus.2004.10.017.
    9. Behrend, Raoul, Courbes de rotation d'astéroïdes et de comètes (in French), Observatoire de Genève, retrieved 30 March 2013


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