Astronomy:380 Fiducia
From HandWiki
_Fiducia.png) Modelled shape of Fiducia from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery site | Nice Observatory |
| Discovery date | 8 January 1894 |
| Designations | |
| (380) Fiducia | |
| Pronunciation | /faɪˈdjuːʃ(i)ə, fɪ-/ |
| Named after | confidence |
| A894 AB · 1933 CA · 1975 LX[2][lower-alpha 1] | |
| Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 21 November 2025 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 131.81 yr (48145 d) |
| |{{{apsis}}}|helion}} | 6.1639 astronomical unit|AU (922.11 Gm) |
| |{{{apsis}}}|helion}} | 2.3714 AU (354.76 Gm) |
| 2.6789 AU (400.76 Gm) | |
| Eccentricity | 0.1148 |
| Orbital period | 4.3846 yr (1601.5 d) |
| Mean anomaly | 154.85° |
| Mean motion | 0° 13m 29.244s / day |
| Inclination | 6.1639° |
| Longitude of ascending node | 95.004° |
| 240.62° | |
| Jupiter MOID | 2.3388 au (349.88 Gm) |
| TJupiter | 3.360 |
| Physical characteristics | |
| Mean diameter | 67.508±2.455 km |
| Rotation period | 13.69 h |
| Geometric albedo | 0.0563±0.005 |
| C-type | |
| Absolute magnitude (H) | 9.42 |
380 Fiducia (provisional designation A894 AB) is a dark and large asteroid, approximately 68 kilometers (42 miles) in diameter, located in the central region of the asteroid belt. It was discovered by French astronomer Auguste Charlois at the Nice Observatory on 8 January 1894. The carbonaceous C-type asteroid has a rotation period of 13.7 hours. It was named "Fiducia", the Latin word for confidence.[2]
Notes
References
- ↑ 1.0 1.1 "(380) Fiducia = 1894 AB = 1933 CA = 1975 LX". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=380. Retrieved 7 November 2025.
- ↑ 2.0 2.1 2.2 "380 Fiducia (1894 AR)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=380.
- ↑ "Notes on some Points connected with the Progress of Astronomy during the Past Year". Monthly Notices of the Royal Astronomical Society 55 (4): 232–259. 8 February 1895. doi:10.1093/mnras/55.4.232.
External links
- Lightcurve plot of 380 Fiducia[Usurped!], Palmer Divide Observatory, B. D. Warner (2004)
- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 380 Fiducia at AstDyS-2, Asteroids—Dynamic Site
- 380 Fiducia at the JPL Small-Body Database
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