(3403) Tammy Main-belt Asteroid

Discovered on 25 September 1981 by L. G. Taff at Socorro.

Where Tammy is today

MercuryVenusEarthEarthMarsMarsTammyTammy

Seen from above the solar system on 2026-10-14: Tammy is 2.16 au from the Sun and 1.21 au from Earth. Computed from JPL's orbital elements.

Facts

Number3403
Provisional designation1981 SW
Orbit classMain-belt Asteroid
Diameter4.13 km (#12,427 largest of 17,440 named asteroids with a measured size)
Albedo0.652
Rotation period11.8 hours
Absolute magnitude (H)13.02
Orbital period3.74 years
Semi-major axis2.41 au
Perihelion – aphelion1.94 – 2.89 au
Eccentricity0.197
Inclination4.58°
Closest distance between its orbit and Earth's (MOID)0.926 au

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

Also discovered on 25 September 1981

More named asteroids discovered by L. G. Taff