Astronomy:345 Tercidina
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Short description: Main-belt asteroid
.png) A three-dimensional model of 345 Tercidina based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 23 November 1892 |
| Designations | |
| (345) Tercidina | |
| Pronunciation | /tɜːrsɪˈdaɪnə/ |
| Named after | (unknown) |
| 1892 O | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.88 yr (44882 d) |
| |{{{apsis}}}|helion}} | 2.46765 astronomical unit|AU (369.155 Gm) |
| |{{{apsis}}}|helion}} | 2.18337 AU (326.628 Gm) |
| 2.32551 AU (347.891 Gm) | |
| Eccentricity | 0.061120 |
| Orbital period | 3.55 yr (1295.3 d) |
| Mean anomaly | 288.675° |
| Mean motion | 0° 16m 40.526s / day |
| Inclination | 9.74765° |
| Longitude of ascending node | 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] |
| Rotation period | 12.371 h (0.5155 d)[1] |
| Geometric albedo | 0.0654±0.007[1] |
| C[1] | |
| Absolute magnitude (H) | 8.71[1] |
Tercidina (minor planet designation: 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 23 November 1892, in Nice.
Size
Observations of an occultation of a bright 5.5 magnitude star on 17 September 2002, produced seventy-five chords indicating an ellipsoid of 111×90 km.[3]
Observations of an occultation on 15 November 2005, near Grass Valley, California, 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.[citation needed]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "JPL Small-Body Database Browser: 345 Tercidina (1892 O)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=345.
- ↑ 2.0 2.1 Richard Nugent (2005-11-15). "345 Tercidina 2005 Nov 15". Richard's Astronomy Pages. http://www.weblore.com/richard/Asteroid_Profiles.htm#345%20Tercidina.
- ↑ 3.0 3.1 "2002 European Asteroidal Occultation Results". euraster.net (a website for Asteroidal Occultation Observers in Europe). 2002-09-17. http://www.euraster.net/results/2002/index.html#0917-345. (Chords)
- ↑ 4.0 4.1 4.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
External links
- 345 Tercidina at AstDyS-2, Asteroids—Dynamic Site
- 345 Tercidina at the JPL Small-Body Database
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