2015 HM10
2015 HM10 is an irregular shaped asteroid and sub-kilometer near-Earth object that passed near the Earth on 7 July 2015, at a distance of 442,000 kilometers or 1.15 lunar distances.
| Discovery | |
|---|---|
| Discovered by | DeCam–DES |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 19 April 2015 |
| Designations | |
MPC designation | 2015 HM10 |
Minor planet category | NEO · Apollo Amor |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 0.39 yr (141 days) |
| Aphelion | 4.0411 AU |
| Perihelion | 1.0085 AU |
Semi-major axis | 2.5248 AU |
| Eccentricity | 0.6006 |
Orbital period (sidereal) | 4.01 yr (1,465 days) |
Mean anomaly | 195.53° |
Mean motion | 0° 14m 44.52s / day |
| Inclination | 1.4699° |
Longitude of ascending node | 283.27° |
| 353.48° | |
| Earth MOID | 0.0022 AU · 0.9 LD |
| Physical characteristics | |
| Dimensions | 0.057 km (calculated) |
Synodic rotation period | 0.3761±0.0001 h 0.3763±0.0003 h |
| 0.20 (assumed) | |
| S (assumed) | |
| 23.6 | |
First observed on 19 April 2015, by astronomers of the Dark Energy Survey at Cerro Tololo Observatory in Chile, the asteroid measures approximately 60 meters in diameter and is classified as a member of the Apollo and Amor group, respectively. It is a fast rotator with a rotation period of 22.6 minutes.
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