| Minorplanet: | yes |
| Background: |
|
| 947 Monterosa | |
| Mpc Name: | (947) Monterosa |
| Alt Names: | 1921 JD |
| Discovered: | 8 February 1921 |
| Orbit Ref: | [1] |
| Observation Arc: | 109.28 yr (39915 days) |
| Uncertainty: | 0 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Eccentricity: | 0.24975 |
| Semimajor: | 2.7513AU |
| Perihelion: | 2.0641AU |
| Aphelion: | 3.4384abbr=onNaNabbr=on |
| Period: | 4.56 yr (1666.8 d) |
| Inclination: | 6.7071° |
| Asc Node: | 48.349° |
| Arg Peri: | 338.212° |
| Mean Motion: | / day |
| Abs Magnitude: | 9.9 |
| Rotation: | 5.164abbr=onNaNabbr=on |
| Mean Radius: | km |
947 Monterosa is a minor planet orbiting the Sun.
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.