1509 Esclangona
1509 Esclangona, provisional designation 1938 YG, is a rare-type Hungaria asteroid and binary system from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It is named after French astronomer Ernest Esclangon.
| Discovery | |
|---|---|
| Discovered by | A. Patry |
| Discovery site | Nice Obs. |
| Discovery date | 21 December 1938 |
| Designations | |
MPC designation | (1509) Esclangona |
Named after | Ernest Esclangon (French astronomer) |
Alternative designations | 1938 YG |
Minor planet category | main-belt · (inner) Hungaria |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.68 yr (28,374 days) |
| Aphelion | 1.9263 AU |
| Perihelion | 1.8064 AU |
Semi-major axis | 1.8663 AU |
| Eccentricity | 0.0321 |
Orbital period (sidereal) | 2.55 yr (931 days) |
Mean anomaly | 225.08° |
Mean motion | 0° 23m 11.76s / day |
| Inclination | 22.320° |
Longitude of ascending node | 283.52° |
| 267.82° | |
| Known satellites | 1 |
| Physical characteristics | |
| Dimensions | 6.83±1.32 km 7.52±1.78 km 8.17±0.6 km (IRAS:2) 8.18 km (derived) 9.0±1.0 km 9.87±0.37 km |
Synodic rotation period | 2.64±0.02 h 3.247 h 3.247±0.002 h 3.252±0.005 h 3.2524±0.0003 h 3.25250±0.00005 h 3.25281±0.00002 h 3.25283±0.00002 h 5.89 h |
| 0.107±0.021 0.160±0.013 0.185±0.055 0.2041 (derived) 0.2327±0.038 (IRAS:2) 0.30±0.14 0.41±0.18 | |
| Tholen = S · K · S B–V = 0.894 U–B = 0.472 | |
| 12.33±0.14 (R) · 12.64 · 12.79 · 12.858±0.149 · 13.28±0.0 | |
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