(19707) Tokunai Main-belt Asteroid
Discovered on 8 October 1999 by T. Okuni at Nanyo.
Tokunai Mogami (1755-1836) explored the northern area of Japan and learned astronomy, surveying and navigation from Toshiaki Honda, a Dutch scholar. He was engaged in the investigation and development of Hokkaido, Kurile Islands and Sakhalin.Naming citation (20040713/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tokunai is today
Seen from above the solar system on 2026-10-14: Tokunai is 1.88 au from the Sun and 0.935 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19707 |
| Provisional designation | 1999 TZ12 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 13.88 |
| Orbital period | 3.38 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.83 – 2.68 au |
| Eccentricity | 0.190 |
| Inclination | 4.69° |
| Closest distance between its orbit and Earth's (MOID) | 0.827 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 8 October 1999
- (16095) Lorenball
- (20654) Ivaneder
- (24068) Simonsen
- (42929) Francini
- (66667) Kambic
- (129955) Eriksyrstad
- (243637) Frosinone