(778) Theobalda Main-belt Asteroid

Discovered on 25 January 1914 by F. Kaiser at Heidelberg.

Where Theobalda is today

MercuryVenusEarthEarthMarsMarsTheobaldaTheobalda

Seen from above the solar system on 2026-10-14: Theobalda is 2.80 au from the Sun and 1.83 au from Earth. Computed from JPL's orbital elements.

Facts

Number778
Provisional designationA914 BG
Orbit classMain-belt Asteroid
Diameter55.3 km (#650 largest of 17,440 named asteroids with a measured size)
Albedo0.0790
Rotation period11.7 hours
Spectral typeF
Absolute magnitude (H)9.88
Orbital period5.66 years
Semi-major axis3.18 au
Perihelion – aphelion2.36 – 3.99 au
Eccentricity0.257
Inclination13.7°
Closest distance between its orbit and Earth's (MOID)1.40 au

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

Also discovered on 25 January 1914

More named asteroids discovered by F. Kaiser