(2735) Ellen Inner Main-belt Asteroid

Discovered on 13 September 1977 by Bus, S. J., Lauer, T. at Palomar.

Where Ellen is today

MercuryVenusEarthEarthMarsMarsEllenEllen

Seen from above the solar system on 2026-10-14: Ellen is 1.88 au from the Sun and 2.64 au from Earth. Computed from JPL's orbital elements.

Facts

Number2735
Provisional designation1977 RB
Orbit classInner Main-belt Asteroid
Diameter3.53 km (#13,878 largest of 17,440 named asteroids with a measured size)
Albedo0.292
Rotation period159 hours
Spectral typeSDU::
Absolute magnitude (H)14.49
Orbital period2.53 years
Semi-major axis1.86 au
Perihelion – aphelion1.76 – 1.96 au
Eccentricity0.0548
Inclination23.1°
Closest distance between its orbit and Earth's (MOID)0.788 au

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

Also discovered on 13 September 1977