312 Pierretta

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=June 2017}}

{{Infobox planet

| minorplanet=yes

| background=#D6D6D6

| name=312 Pierretta

| image=312Pierretta (Lightcurve Inversion).png

| image_scale =

| caption=A three-dimensional model of 312 Pierretta based on its light curve

| discoverer=Auguste Charlois

| discovery_site = Nice Observatory

| discovered=28 August 1891

| mpc_name=(312) Pierretta

| alt_names= A891 QA

| pronounced= {{IPAc-en|p|i|ə|'|r|ɛ|t|ə}}{{Cite encyclopedia |url=http://www.lexico.com/definition/pierette |title=pierette |dictionary=Lexico UK English Dictionary |publisher=Oxford University Press}}{{dead link|date=September 2022|bot=medic}}{{cbignore|bot=medic}}

| mp_category=Main belt

| epoch=31 May 2020 (JD 2459000.5)

| aphelion={{Convert|3.227|AU|Gm|abbr=on|lk=on}}

| perihelion={{Convert|2.338|AU|Gm|abbr=on}}

| semimajor={{Convert|2.782|AU|Gm|abbr=on}}

| eccentricity=0.15982

| period=4.64 yr (1695.1 d)

| inclination=9.029344°

| asc_node=6.25477°

| arg_peri=262.764°

| mean_anomaly=339.6932°

| dimensions={{val|49.96|1.5|ul=km}}

| mass=

| density=

| albedo={{val|0.1967|0.013}}

| spectral_type=S/Sk

| abs_magnitude=8.89

| mean_motion={{Deg2DMS|0.212376|sup=ms}} / day

| observation_arc=128.66 yr (46994 d)

| rotation={{Convert|10.282|h|d|abbr=on|lk=on}}

| orbit_ref=

| uncertainty=0

}}

312 Pierretta (A891 QA) is a 46 km main-belt asteroid discovered on 28 Aug 1891 by Auguste Charlois at Nice.{{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=312;cad=1 |title=312 Pierretta |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=5 June 2020}}