388 Charybdis

388 Charybdis (/kəˈrɪbdɪs/, prov. designation: A894 ED or 1894 BA) is a very large background asteroid, approximately 125 kilometers (78 miles) in diameter, that is located the outer region of the asteroid belt.[2] It was discovered by French astronomer Auguste Charlois at the Nice Observatory on 7 March 1894. The carbonaceous C-type asteroid has a rotation period of 9.5 hours. It is probably named after Charybdis, a sea monster in Greek mythology.

388 Charybdis

Modelled shape of Charybdis
Discovery
Discovered by	Auguste Charlois
Discovery date	7 March 1894
Designations
MPC designation	(388) Charybdis
Pronunciation	/kəˈrɪbdɪs/[1]
Named after	Charybdis
Alternative designations	1894 BA
Minor planet category	Main belt
Adjectives	Charybdian /kəˈrɪbdiən/
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	122.09 yr (44595 d)
Aphelion	3.20025 AU (478.751 Gm)
Perihelion	2.81022 AU (420.403 Gm)
Semi-major axis	3.00524 AU (449.578 Gm)
Eccentricity	0.064892
Orbital period	5.21 yr (1902.9 d)
Mean anomaly	10.9926°
Mean motion	0° 11^m 21.066^s / day
Inclination	6.44575°
Longitude of ascending node	354.285°
Argument of perihelion	333.004°
Physical characteristics
Mean diameter	125.754±1.887 km
Rotation period	9.516 h (0.3965 d)
Geometric albedo	0.0506±0.007
Spectral type	C
Absolute magnitude (H)	8.57

References

1. "Charybdis". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
2. "388 Charybdis (1894 BA)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.

External links

• 388 Charybdis at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 388 Charybdis at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters