Global Information1509 Esclangona information
| Discovery[1] | |
|---|---|
| Discovered by | A. Patry |
| Discovery site | Nice Obs. |
| Discovery date | 21 December 1938 |
| Designations | |
MPC designation | (1509) Esclangona |
Named after | Ernest Esclangon (French astronomer)[2] |
Alternative designations | 1938 YG |
Minor planet category | main-belt · (inner)[1] Hungaria[3][4][5] |
| Orbital characteristics[1] | |
| 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° |
Argument of perihelion | 267.82° |
| Known satellites | 1[6] |
| Physical characteristics | |
| Dimensions | 6.83±1.32 km[7] 7.52±1.78 km[8] 8.17±0.6 km (IRAS:2)[9] 8.18 km (derived)[4] 9.0±1.0 km[10] 9.87±0.37 km[11] |
Synodic rotation period | 2.64±0.02 h[12] 3.247 h[10] 3.247±0.002 h[13] 3.252±0.005 h[14][a] 3.2524±0.0003 h[15] 3.25250±0.00005 h[16] 3.25281±0.00002 h[b] 3.25283±0.00002 h[17] 5.89 h[c] |
Geometric albedo | 0.107±0.021[10] 0.160±0.013[11] 0.185±0.055[18] 0.2041 (derived)[4] 0.2327±0.038 (IRAS:2)[9] 0.30±0.14[8] 0.41±0.18[7] |
Spectral type | Tholen = S[1] · K[19] · S[4] B–V = 0.894[1] U–B = 0.472[1] |
Absolute magnitude (H) | 12.33±0.14 (R)[b] · 12.64[1][7][9][11] · 12.79[8] · 12.858±0.149[4][20] · 13.28±0.0[10] |
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.
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