(12773) Lyman Main-belt Asteroid
Discovered on 10 August 1994 by E. W. Elst at La Silla.
Theodore Lyman (1874-1954) was an American physicist who discovered, in 1906, a group of lines in the spectrum of the hydrogen atom that now bears his name. In 1970, a lunar crater was named after him by the IAU.Naming citation (20041126/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Lyman is today
Seen from above the solar system on 2026-10-14: Lyman is 2.49 au from the Sun and 1.52 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12773 |
| Provisional designation | 1994 PJ10 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.65 km (#13,569 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.333 |
| Absolute magnitude (H) | 14.55 |
| Orbital period | 4.51 years |
| Semi-major axis | 2.73 au |
| Perihelion – aphelion | 2.48 – 2.97 au |
| Eccentricity | 0.0902 |
| Inclination | 1.47° |
| Closest distance between its orbit and Earth's (MOID) | 1.48 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Theodore
All asteroids named after someone called Theodore
Also discovered on 10 August 1994
- (6836) Paranal
- (7661) Reincken
- (7960) Condorcet
- (8205) Van Dijck
- (8890) Montaigne
- (9079) Gesner
- (9205) Eddywally
- (9392) Cavaillon
- (9393) Apta
- (9394) Manosque
- (9395) Saint Michel
- (9638) Fuchs
More named asteroids discovered by E. W. Elst
- (3631) Sigyn
- (3784) Chopin
- (3870) Mayre
- (3903) Kliment Ohridski
- (3910) Liszt
- (3912) Troja
- (3918) Brel
- (4038) Kristina
- (4226) Damiaan
- (4342) Freud
- (4344) Buxtehude
- (4345) Rachmaninoff
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