345 Tercidina

345 Tercidina
A three-dimensional model of 345 Tercidina based on its light curve
Discovery
Discovered by Auguste Charlois
Discovery date 23 November 1892
Designations
MPC designation (345) Tercidina
1892 O
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 122.88 yr (44882 d)
Aphelion 2.46765 AU (369.155 Gm)
Perihelion 2.18337 AU (326.628 Gm)
2.32551 AU (347.891 Gm)
Eccentricity 0.061120
3.55 yr (1295.3 d)
288.675°
0° 16m 40.526s / day
Inclination 9.74765°
212.629°
230.279°
Physical characteristics
Dimensions 126x94x90 km[2][3][1]
94 km (mean)[1]
98.78 ± 2.63 km[4]
Mass (2.68 ± 1.18) × 1018 kg[4]
Mean density
 5.30 ± 2.37 g/cm3[4]
12.371 h (0.5155 d)[1]
0.0654±0.007[1]
C[1]
8.71[1]

    345 Tercidina is a large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.

    It was discovered by Auguste Charlois on November 23, 1892, in Nice.

    Size

    Via asteroid occultations:

    Observations of an occultation of a bright 5.5 magnitude star on September 17, 2002, produced seventy-five chords indicating an ellipsoid of 111×90 km.[3]

    Observations of an occultation on November 15, 2005, near Grass Valley, CA, produced five chords indicating an incomplete outline of 126×111 km.[2] This larger result may be caused by a different orientation of the asteroid as it passed in front of the star.

    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 345 Tercidina (1892 O)" (2008-08-26 last obs). Retrieved 6 May 2016.
    2. 1 2 Richard Nugent (2005-11-15). "345 Tercidina 2005 Nov 15". Richard's Astronomy Pages. Archived from the original on 27 December 2008. Retrieved 2008-12-03.
    3. 1 2 "2002 European Asteroidal Occultation Results". euraster.net (a website for Asteroidal Occultation Observers in Europe). 2002-09-17. Retrieved 2008-12-03. (Chords)
    4. 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.


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