(10690) Massera Outer Main-belt Asteroid
Discovered on 28 February 1981 by S. J. Bus at Siding Spring.
José Luis Massera (1915-2002) was a Uruguayan mathematician who studied the stability of differential equations. Massera's Lemma solves the equilibrium stability problem in nonlinear differential equations in terms of the Lyapunov function.Naming citation (MPC batch dated 2017-03-12), IAU / Minor Planet Center, via NASA/JPL
Where Massera is today
Seen from above the solar system on 2026-10-14: Massera is 3.55 au from the Sun and 4.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10690 |
| Provisional designation | 1981 DO3 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 9.22 km (#5,608 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0990 |
| Absolute magnitude (H) | 13.61 |
| Orbital period | 5.73 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 2.79 – 3.61 au |
| Eccentricity | 0.129 |
| Inclination | 6.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.78 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Jose
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- (10523) D'Haveloose
- (10803) Caleyo
- (12990) Josetillard
- (13476) Pepesales
- (14918) Gonzalezalegre
- (17089) Mercado
All asteroids named after someone called Jose
Also discovered on 28 February 1981
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- (2958) Arpetito
- (3287) Olmstead
- (3307) Athabasca
- (3602) Lazzaro
- (3805) Goldreich
- (4052) Crovisier
- (4192) Breysacher
- (4473) Sears
- (4523) MIT
- (4989) Joegoldstein
- (5046) Carletonmoore