Global Information1098 Hakone information
 Modelled shape of Hakone from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | O. Oikawa |
| Discovery site | Tokyo Astronomical Obs. |
| Discovery date | 5 September 1928 |
| Designations | |
MPC designation | (1098) Hakone |
| Pronunciation | Japanese: [hakone] |
Named after | Mount Hakone (Japanese volcanic mountain)[2] |
Alternative designations | 1928 RJ · 1926 EC 1950 QH1 · 1952 BE1 A906 RD · A917 DD |
Minor planet category |
|
| Orbital characteristics[3] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.19 yr (40,247 days) |
| Aphelion | 3.0081 AU |
| Perihelion | 2.3686 AU |
Semi-major axis | 2.6884 AU |
| Eccentricity | 0.1189 |
Orbital period (sidereal) | 4.41 yr (1,610 days) |
Mean anomaly | 13.741° |
Mean motion | 0° 13m 24.96s / day |
| Inclination | 13.377° |
Longitude of ascending node | 329.00° |
Argument of perihelion | 80.805° |
| Physical characteristics | |
Mean diameter | 24.44 km (derived)[6] 24.73±1.1 km[7] 24.90±0.57 km[8] 26.684±0.397 km[9] 29.567±0.135 km[10] |
Synodic rotation period | 7.14±0.01 h[11] 7.14117±0.00001 h[12] 7.142±0.002 h[13] 7.16±0.050 h[14] |
Pole ecliptic latitude | (40.0°, 43.0°) (λ1/β1)[5] |
Geometric albedo | 0.1745±0.0334[10] 0.1865 (derived)[6] 0.206±0.009[9] 0.2404±0.022[7] 0.245±0.013[8] |
Spectral type | SMASS = Xe[3] · M[10] · X[6] |
Absolute magnitude (H) | 10.20[7][8][10] · 10.350±0.120 (R)[14] · 10.5[3][6] |
1098 Hakone (prov. designation: 1928 RJ) is a background asteroid from the central regions of the asteroid belt. The X-type asteroid has a rotation period of 7.1 hours and measures approximately 25 kilometers (16 miles) in diameter. Discovered by Japanese astronomer Okuro Oikawa at Tokyo Observatory in 1928, the asteroid was later named after the volcanic Mount Hakone in Japan.
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