| Name | |
|---|---|
| Name | Johnmuir |
| Designation | 2004 PX42 |
| Discovery | |
| Discovery date | August 11, 2004 |
| Orbital elements | |
| Epoch October 27, 2007 (JDCT 2454400.5) | |
| Eccentricity (e) | 0.2050886 |
| Semimajor axis (a) | 2.4069432 AU |
| Perihelion (q) | 1.9133066 AU |
| Aphelion (Q) | 2.9005798 AU |
| Orbital period (P) | 3.73 a |
| Inclination (i) | 1.32456° |
| Longitude of the ascending node (Ω) | 291.83342° |
| Argument of Perihelion (ω) | 81.13989° |
| Mean anomaly (M) | 345.36081° |
128523 Johnmuir is a main belt asteroid with an orbital period of 1363.9459897 days (3.73 years).[1]
The asteroid was discovered on August 11, 2004.