206 Hersilia

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206 Hersilia
000206-asteroid shape model (206) Hersilia.png
3D convex shape model of 206 Hersilia
Discovery
Discovered by C. H. F. Peters
Discovery date13 October 1879
Designations
(206) Hersilia
Pronunciation /hərˈsɪliə/ [1]
Named after
Hersilia
A879 TC, 1961 WG
1974 PM
Main belt
Orbital characteristics [2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 136.34 yr (49798 d)
Aphelion 2.84299  AU (425.305  Gm)
Perihelion 2.63811 AU (394.656 Gm)
2.74055 AU (409.980 Gm)
Eccentricity 0.037379
4.54 yr (1657.1 d)
Average orbital speed
17.99 km/s
348.975°
0° 13m 2.078s / day
Inclination 3.77868°
145.169°
299.705°
Physical characteristics
Dimensions113 km
11.122  h (0.4634  d)
0.055
Temperature unknown
C
8.68

    Hersilia (minor planet designation: 206 Hersilia) is a fairly large Main belt asteroid. It was discovered by C. H. F. Peters on October 13, 1879, in Clinton, New York. The asteroid was named after Hersilia, Roman wife of Romulus. It is classified as a primitive, dark carbon-rich C-type asteroid.

    Measurements made with the IRAS observatory give a diameter of 101.72 ± 5.18 km and a geometric albedo of 0.06 ± 0.01. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 97.99 ± 7.40 km and a geometric albedo of 0.06 ± 0.02. [3]

    The last close earth transit was in November and December 2002.

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    References

    1. Noah Webster (1884) A Practical Dictionary of the English Language
    2. "206 Hersilia". JPL Small-Body Database . NASA/Jet Propulsion Laboratory . Retrieved 12 May 2016.
    3. Ryan, Erin Lee; et al. (April 2012), "The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer", arXiv: 1204.1116 [astro-ph.EP]