947 Monterosa is a minor planet orbiting the Sun.
| Discovery | |
|---|---|
| Discovered by | A. Schwassmann |
| Discovery site | Bergedorf |
| Discovery date | 8 February 1921 |
| Designations | |
MPC designation | (947) Monterosa |
Alternative designations | 1921 JD |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.28 yr (39915 days) |
| Aphelion | 3.4384 AU (514.38 Gm) |
| Perihelion | 2.0641 AU (308.78 Gm) |
Semi-major axis | 2.7513 AU (411.59 Gm) |
| Eccentricity | 0.24975 |
Orbital period (sidereal) | 4.56 yr (1666.8 d) |
Mean anomaly | 61.4561° |
Mean motion | 0° 12m 57.528s / day |
| Inclination | 6.7071° |
Longitude of ascending node | 48.349° |
Argument of perihelion | 338.212° |
| Physical characteristics | |
Mean radius | 13.45±0.85 km |
Synodic rotation period | 5.164 h (0.2152 d) |
Geometric albedo | 0.2937±0.040 |
Absolute magnitude (H) | 9.9 |
Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado during 2007 produced a light curve with a period of 5.164 ± 0.001 hours with a brightness range of 0.23 ± 0.02 in magnitude. This differs from a period of 2.376 hours reported in 2007.[2]
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