217 Eudora

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=July 2018}}

{{Infobox planet

| minorplanet=yes

| background=#D6D6D6

|image=000217-asteroid shape model (217) Eudora.png

|caption=3D model based on lightcurve data

| name=217 Eudora

| discoverer=J. Coggia

| discovered=30 August 1880

| mpc_name=(217) Eudora

|named_after=Eudora

| pronounced={{IPAc-en|j|uː|'|d|ɔər|ə}}Noah Webster (1884) A Practical Dictionary of the English Language

| alt_names=A880 QA, 1914 RA

| mp_category=Main belt

| epoch=31 July 2016 (JD 2457600.5)

| semimajor={{Convert|2.86811|AU|Gm|abbr=on}}

| perihelion={{Convert|1.98080|AU|Gm|abbr=on}}

| aphelion={{Convert|3.75541|AU|Gm|abbr=on|lk=on}}

| eccentricity=0.30937

| period=4.86 yr (1774.2 d)

| inclination=10.5165°

| asc_node=162.594°

| arg_peri=155.320°

| mean_anomaly=349.290°

| avg_speed=17.57 km/s

| dimensions={{val|66.24|2.3|ul=km}}
68.62 ± 1.41 km

| mass={{nowrap|(1.52 ± 0.06) × 10¹⁸ kg}}

| density=8.98 ± 0.65 g/cm³

| rotation={{Convert|25.272|h|d|abbr=on|lk=on}}
25.253 ± 0.003 hr

| spectral_type=C

| abs_magnitude=9.80

| albedo={{val|0.0484|0.004}}

| single_temperature=

| mean_motion={{Deg2DMS|0.202914|sup=ms}} / day

| orbit_ref={{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=217;cad=1 |title=217 Eudora |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=12 May 2016}}

| observation_arc=130.48 yr (47657 d)

| uncertainty=0

}}

217 Eudora is a large Main belt asteroid. It was discovered by French (Corsican) astronomer Jérôme Eugène Coggia on August 30, 1880, in Marseille, France. It was his fourth asteroid discovery and is probably named after Eudora, one of the Hyades in Greek mythology.Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 51. Springer, {{ISBN|3-540-00238-3}}.

It probably has a composition similar to carbonaceous chondrites. In 2007, a study showed it rotates every 25.253 ± 0.003 hours, based on lightcurve data. A light curve generated from photometric observations at Pulkovo Observatory, give a matching rotation period of 25.253 ± 0.002 hours and a brightness variation of 0.22 ± 0.04 in magnitude.