726 Joëlla
726 Joëlla is a minor planet orbiting the Sun. It was discovered on November 22, 1911, by Joel Hastings Metcalf, in Winchester, Massachusetts, in the United States.
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Winchester, Massachusetts |
| Discovery date | 22 November 1911 |
| Designations | |
MPC designation | (726) Joëlla |
| Pronunciation | /dʒoʊˈɛlə/ |
Alternative designations | 1911 NM |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.76 yr (30958 d) |
| Aphelion | 3.2978 AU (493.34 Gm) |
| Perihelion | 1.8387 AU (275.07 Gm) |
Semi-major axis | 2.5683 AU (384.21 Gm) |
| Eccentricity | 0.28407 |
Orbital period (sidereal) | 4.12 yr (1503.4 d) |
Mean anomaly | 203.587° |
Mean motion | 0° 14m 22.092s / day |
| Inclination | 15.414° |
Longitude of ascending node | 242.040° |
| 112.979° | |
| Physical characteristics | |
Mean radius | 22.01±1.75 km |
Synodic rotation period | 13.04 h (0.543 d) |
| 0.0539±0.010 | |
| 10.57 | |
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