188 Menippe

188 Menippe is a main belt asteroid. The object has a bright surface and rocky composition. It was discovered by C. H. F. Peters on June 18, 1878, in Clinton, New York, and named after Menippe, one of the daughters of Orion in Greek mythology.

188 Menippe

A three-dimensional model of 188 Menippe based on its light curve.
Discovery
Discovered by	C. H. F. Peters, 1878
Discovery date	18 June 1878
Designations
MPC designation	(188) Menippe
Pronunciation	/mɛˈnɪpiː/[1]
Alternative designations	A878 MA; 1897 QA; 1948 WQ
Minor planet category	Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	100.84 yr (36833 d)
Aphelion	3.2542 AU (486.82 Gm)
Perihelion	2.2691 AU (339.45 Gm)
Semi-major axis	2.7617 AU (413.14 Gm)
Eccentricity	0.17835
Orbital period (sidereal)	4.59 yr (1676.3 d)
Mean anomaly	346.69°
Mean motion	0° 12m 53.1s / day
Inclination	11.703°
Longitude of ascending node	240.91°
Argument of perihelion	70.177°
Earth MOID	1.286 AU (192.4 Gm)
Jupiter MOID	2.07085 AU (309.795 Gm)
TJupiter	3.288
Physical characteristics
Mean radius	19.305±0.5 km
Synodic rotation period	11.98 h (0.499 d)
Geometric albedo	0.2431±0.013
Spectral type	S
Absolute magnitude (H)	9.22

Photometric observations during 2010 showed a synodic rotation period of 11.98 ± 0.02 hours and a brightness variation of 0.28 ± 0.02 in magnitude. Because the rotation period is close to twelve hours, observations were needed at two widely separated observatories in order to build a light curve for the complete rotation.^[3]