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423 Diotima
Main-belt asteroid
Main-belt asteroid
| Field | Value |
|---|---|
| minorplanet | yes |
| background | #D6D6D6 |
| image | 423 Diotima.png |
| caption | Lightcurve-base 3D-model of *Diotima* on the top with an image of the asteroid on the bottom. |
| name | 423 Diotima |
| discoverer | Auguste Charlois |
| discovered | 7 December 1896 |
| mpc_name | (423) Diotima |
| alt_names | 1896 DB |
| pronounced | |
| adjective | Diotimean , Diotimian |
| named_after | Diotima of Mantinea (Διοτίμα *Diotīma*) |
| mp_category | Main belt |
| epoch | 31 July 2016 (JD 2457600.5) |
| semimajor | 3.06774 AU |
| perihelion | 2.95026 AU |
| aphelion | 3.18523 AU |
| eccentricity | 0.038297 |
| period | 5.37 yr (1962.6 d) |
| inclination | 11.2304° |
| asc_node | 69.4710° |
| arg_peri | 200.103° |
| mean_anomaly | 237.495° |
| dimensions | |
| mean_diameter | |
| 211.64 ± 16.02 km | |
| mass | |
| (4.368 ± 1.680/1.377) kg | |
| density | 1.39 ± 0.50 g/cm3 |
| 1.534 ± 0.590/0.483 g/cm | |
| rotation | 4.775 h |
| spectral_type | C |
| abs_magnitude | 7.42 |
| albedo | |
| mean_motion | / day |
| orbit_ref | |
| observation_arc | 116.96 yr (42719 d) |
| uncertainty | 0 |
211.64 ± 16.02 km (4.368 ± 1.680/1.377) kg 1.534 ± 0.590/0.483 g/cm
423 Diotima is one of the larger main-belt asteroids. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material.
It was discovered by Auguste Charlois on 7 December 1896, in Nice. In the late 1990s, a network of astronomers worldwide gathered lightcurve data that was ultimately used to derive the spin states and shape models of 10 new asteroids, including 423 Diotima. The light curve for this asteroid varies "a lot" depending on the position, with the brightness variations ranging from almost zero to up to 0.2 in magnitude. Dunham (2002) used 15 chords and obtained an estimated size of .{{cite journal |access-date=2008-11-30 }}
Name
Diotima is named for Diotima of Mantinea, a priestess who was one of Socrates's teachers. It is one of seven of Charlois's discoveries that was expressly named by the Astromomisches Rechen-Institut (Astronomical Calculation Institute).
The name is stressed on the penultimate syllable, , as in Latin Diotīma.
References
References
- Noah Webster (1884) ''A Practical Dictionary of the English Language''
- Durech, J.; Kaasalainen, M.; Marciniak, A.; Allen, W. H. et al. "Asteroid brightness and geometry," ''Astronomy and Astrophysics'', Volume 465, Issue 1, April I 2007, pp. 331-337.
- Schmadel Lutz D. ''Dictionary of Minor Planet Names'' (fifth edition), Springer, 2003. {{ISBN. 3-540-00238-3.
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