380 Fiducia (prov. designation: A894 AB or 1894 AR) 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.[1]

380 Fiducia

Modelled shape of Fiducia from its lightcurve
Discovery
Discovered by	Auguste Charlois
Discovery date	8 January 1894
Designations
MPC designation	(380) Fiducia
Pronunciation	/faɪˈdjuːʃ(i)ə, fɪ-/
Named after	confidence
Alternative designations	1894 AR
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	122.20 yr (44633 d)
Aphelion	2.98476 AU (446.514 Gm)
Perihelion	2.37017 AU (354.572 Gm)
Semi-major axis	2.67747 AU (400.544 Gm)
Eccentricity	0.11477
Orbital period (sidereal)	4.38 yr (1600.2 d)
Mean anomaly	111.769°
Mean motion	0° 13m 29.878s / day
Inclination	6.15867°
Longitude of ascending node	95.1146°
Argument of perihelion	239.555°
Physical characteristics
Mean diameter	67.508±2.455 km
Synodic rotation period	13.69 h
Geometric albedo	0.0563±0.005
Spectral type	C
Absolute magnitude (H)	9.42

References

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 diagram · Orbital elements · Physical parameters

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