380 Fiducia

380 Fiducia

Modelled shape of Fiducia from its lightcurve
Discovery [1]
Discovered by	Auguste Charlois
Discovery site	Nice Observatory
Discovery date	8 January 1894
Designations
MPC designation	(380) Fiducia
Pronunciation	/faɪˈdjuːʃ(i)ə,fɪ-/
Named after	confidence
Alternative designations	A894 AB ·1933 CA ·1975 LX [2] [a]
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)
Aphelion	6.1639  AU (922.11  Gm)
Perihelion	2.3714 AU (354.76 Gm)
Semi-major axis	2.6789 AU (400.76 Gm)
Eccentricity	0.1148
Orbital period (sidereal)	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°
Argument of perihelion	240.62°
Jupiter  MOID	2.3388 au (349.88 Gm)
TJupiter	3.360
Physical characteristics
Mean diameter	67.508±2.455  km
Synodic rotation period	13.69  h
Geometric albedo	0.0563±0.005
Spectral type	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

1. The MPC notates Fiducia's retroactive new-style designation as 1894 AB. ^[1] Its old-style designation was 1894 AR. ^[3]

References

1. "(380) Fiducia = 1894 AB = 1933 CA = 1975 LX". Minor Planet Center . Retrieved 7 November 2025.
2. "380 Fiducia (1894 AR)". JPL Small-Body Database . NASA/Jet Propulsion Laboratory. Archived from the original on 15 September 2020. Retrieved 14 November 2025.
3. "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, 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
  • Ephemeris  · Observation prediction  · Orbital info  · Proper elements  · Observational info
• 380 Fiducia at the JPL Small-Body Database
  • Close approach  · Discovery  · Ephemeris  · Orbit viewer  · Orbit parameters  · Physical parameters