136 Austria

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136 Austria
Discovery
Discovered by Johann Palisa
Discovery date March 18, 1874
Designations
Named after
Austria
Main belt
Orbital characteristics[1]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 371.048 Gm (2.480 AU)
Perihelion 313.089 Gm (2.093 AU)
342.069 Gm (2.287 AU)
Eccentricity 0.085
1262.933 d (3.46 a)
19.66 km/s
14.588°
Inclination 9.570°
186.536°
132.638°
Physical characteristics
Dimensions 40.14[2] km
Mass 6.8×1016 kg
0.0112 m/s²
0.0212 km/s
11.4969[1] h
Albedo 0.1459[2]
Temperature ~184 K
Spectral type
M[2]
9.69

136 Austria is a main-belt asteroid that was found by the prolific asteroid discoverer Johann Palisa on March 18, 1874, from the Austrian Naval Observatory in Pola, Istria.[3] 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.[4] 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.[5]

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.[2] As of 2013, the estimated rotation period is 11.4969[6] hours.

References

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vec:Lista de asteroidi#136 Austria