312 Pierretta

312 Pierretta (A891 QA) is a 46 km main-belt asteroid discovered on 28 Aug 1891 by Auguste Charlois at Nice.^[2]

312 Pierretta

A three-dimensional model of 312 Pierretta based on its light curve
Discovery
Discovered by	Auguste Charlois
Discovery site	Nice Observatory
Discovery date	28 August 1891
Designations
MPC designation	(312) Pierretta
Pronunciation	/piəˈrɛtə/[1]
Alternative designations	A891 QA
Minor planet category	Main belt
Orbital characteristics[2]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	128.66 yr (46994 d)
Aphelion	3.227 AU (482.8 Gm)
Perihelion	2.338 AU (349.8 Gm)
Semi-major axis	2.782 AU (416.2 Gm)
Eccentricity	0.15982
Orbital period (sidereal)	4.64 yr (1695.1 d)
Mean anomaly	339.6932°
Mean motion	0° 12m 44.554s / day
Inclination	9.029344°
Longitude of ascending node	6.25477°
Argument of perihelion	262.764°
Physical characteristics
Dimensions	49.96±1.5 km
Synodic rotation period	10.282 h (0.4284 d)
Geometric albedo	0.1967±0.013
Spectral type	S/Sk
Absolute magnitude (H)	8.89