(12586) Juliaspeyer Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Julia Speyer mentored a finalist in the 2019 Regeneron Science Talent Search, a science competition for high school seniors. She teaches at the Brookline High School, Brookline, Massachusetts.Naming citation (WGSBN Bull. 3, #5, 9), IAU / Minor Planet Center, via NASA/JPL
Where Juliaspeyer is today
Seen from above the solar system on 2026-10-14: Juliaspeyer is 2.36 au from the Sun and 2.23 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12586 |
| Provisional designation | 1999 RQ81 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.61 km (#9,555 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.186 |
| Absolute magnitude (H) | 14.02 |
| Orbital period | 4.58 years |
| Semi-major axis | 2.76 au |
| Perihelion – aphelion | 2.26 – 3.25 au |
| Eccentricity | 0.180 |
| Inclination | 3.52° |
| Closest distance between its orbit and Earth's (MOID) | 1.26 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Julia
- (8324) Juliadeleon
- (11382) Juliasitu
- (11460) Juliafang
- (12446) Juliabryant
- (18026) Juliabaldwin
- (20372) Juliafanning
- (21614) Grochowski
- (23735) Cohen
- (25469) Ransohoff
- (26522) Juliapoje
- (27323) Julianewman
- (28829) Abelsky
All asteroids named after someone called Julia
Also discovered on 7 September 1999
- (12126) Chersidamas
- (12577) Samra
- (12578) Bensaur
- (12585) Katschwarz
- (12588) Arseneau
- (12604) Lisatate
- (12924) Madisonicole
- (13818) Ullery
- (14214) Hirsch
- (15503) Estradioto
- (16067) Brandonfan
- (16068) Citron