(4574) Yoshinaka Main-belt Asteroid

Discovered on 20 December 1986 by Niijima, T., Urata, T. at Ojima.

Where Yoshinaka is today

MercuryVenusEarthEarthMarsMarsYoshinakaYoshinaka

Seen from above the solar system on 2026-10-14: Yoshinaka is 3.01 au from the Sun and 3.26 au from Earth. Computed from JPL's orbital elements.

Facts

Number4574
Provisional designation1986 YB
Orbit classMain-belt Asteroid
Diameter12.1 km (#4,051 largest of 17,440 named asteroids with a measured size)
Albedo0.143
Rotation period7.03 hours
Absolute magnitude (H)12.39
Orbital period5.20 years
Semi-major axis3.00 au
Perihelion – aphelion2.71 – 3.30 au
Eccentricity0.0984
Inclination8.70°
Closest distance between its orbit and Earth's (MOID)1.72 au

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

Also discovered on 20 December 1986

More named asteroids discovered by Niijima, T., Urata, T.