(9190) Masako Main-belt Asteroid
Discovered on 4 November 1991 by Kushida, Y., Muramatsu, O. at Yatsugatake.
Named in honor of Masako Muramatsu, wife of the second discoverer.Naming citation (19990202/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Masako is today
Seen from above the solar system on 2026-10-14: Masako is 2.03 au from the Sun and 2.14 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9190 |
| Provisional designation | 1991 VR1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.4 km (#4,382 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0600 |
| Rotation period | 6.13 hours |
| Absolute magnitude (H) | 13.58 |
| Orbital period | 3.84 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 1.92 – 2.99 au |
| Eccentricity | 0.218 |
| Inclination | 5.62° |
| Closest distance between its orbit and Earth's (MOID) | 0.937 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 4 November 1991
- (5562) Sumi
- (6729) Emiko
- (6969) Santaro
- (7769) Okuni
- (8864) Aikawa
- (9960) Sekine
- (10099) Glazebrook
- (10343) Church
- (13077) Edschneider
- (15295) Tante Riek
- (20020) Mipach