(4387) Tanaka Main-belt Asteroid
Discovered on 19 September 1973 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Where Tanaka is today
Seen from above the solar system on 2026-10-14: Tanaka is 2.47 au from the Sun and 1.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4387 |
| Provisional designation | 4829 T-2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.14 km (#7,474 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.263 |
| Rotation period | 5.53 hours |
| Spectral type | S |
| Absolute magnitude (H) | 12.82 |
| Orbital period | 3.81 years |
| Semi-major axis | 2.44 au |
| Perihelion – aphelion | 2.41 – 2.47 au |
| Eccentricity | 0.0120 |
| Inclination | 4.27° |
| Closest distance between its orbit and Earth's (MOID) | 1.42 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 19 September 1973
- (2643) Bernhard
- (3290) Azabu
- (3548) Eurybates
- (4007) Euryalos
- (4068) Menestheus
- (4138) Kalchas
- (4230) van den Bergh
- (4757) Liselotte
- (5041) Theotes
- (5928) Pindarus
- (7152) Euneus
- (7214) Anticlus