368 Haidea

368 Haidea is a large asteroid residing in the asteroid belt.^[1] It was discovered by Auguste Charlois on 19 May 1893 in Nice.

368 Haidea

Orbital diagram
Discovery
Discovered by	Auguste Charlois
Discovery date	19 May 1893
Designations
MPC designation	(368) Haidea
Pronunciation	[citation needed]
Alternative designations	1893 AB
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	110.46 yr (40344 d)
Aphelion	3.6914 AU (552.23 Gm)
Perihelion	2.4594 AU (367.92 Gm)
Semi-major axis	3.0754 AU (460.07 Gm)
Eccentricity	0.20031
Orbital period (sidereal)	5.39 yr (1969.9 d)
Mean anomaly	270.180°
Mean motion	0° 10m 57.9s / day
Inclination	7.7935°
Longitude of ascending node	226.340°
Argument of perihelion	94.934°
Physical characteristics
Dimensions	69.61±2.2 km
Synodic rotation period	9.823 h (0.4093 d)
Geometric albedo	0.0389±0.003
Spectral type	PD
Absolute magnitude (H)	9.93

Its name meaning is not known; it may be taken from the opera Haydée or one of several fictional characters named Haidée. The Tagish Lake meteorite is believed to derive from 368 Haidea, due to its reflectance spectrum.^[2]