(211) Isolda Main-belt Asteroid

Discovered on 10 December 1879 by J. Palisa at Pola.

Where Isolda is today

MercuryVenusEarthEarthMarsMarsIsoldaIsolda

Seen from above the solar system on 2026-10-14: Isolda is 3.38 au from the Sun and 3.43 au from Earth. Computed from JPL's orbital elements.

Facts

Number211
Provisional designationA879 XA
Orbit classMain-belt Asteroid
Diameter141 km (#99 largest of 17,440 named asteroids with a measured size)
Albedo0.0620
Rotation period18.4 hours
Spectral typeC
Absolute magnitude (H)7.97
Orbital period5.32 years
Semi-major axis3.05 au
Perihelion – aphelion2.58 – 3.52 au
Eccentricity0.154
Inclination3.87°
Closest distance between its orbit and Earth's (MOID)1.59 au

Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.

More named asteroids discovered by J. Palisa