(4959) Niinoama Main-belt Asteroid
Discovered on 15 August 1991 by Natori, A., Urata, T. at Yakiimo.
Where Niinoama is today
Seen from above the solar system on 2026-10-14: Niinoama is 3.11 au from the Sun and 2.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4959 |
| Provisional designation | 1991 PA1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 35.8 km (#1,114 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0790 |
| Rotation period | 4.73 hours |
| Absolute magnitude (H) | 11.13 |
| Orbital period | 5.58 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 3.11 – 3.18 au |
| Eccentricity | 0.0115 |
| Inclination | 9.00° |
| Closest distance between its orbit and Earth's (MOID) | 2.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 August 1991
More named asteroids discovered by Natori, A., Urata, T.
- (4806) Miho
- (5565) Ukyounodaibu
- (5650) Mochihito-o
- (5744) Yorimasa
- (5784) Yoron
- (5855) Yukitsuna
- (6042) Cheshirecat
- (6136) Gryphon
- (6137) Johnfletcher
- (6527) Takashiito
- (6610) Burwitz
- (6649) Yokotatakao
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