1998 KY26
1998 KY26 is a nearly spherical sub-kilometer asteroid, classified as a near-Earth object of the Apollo group. It measures approximately 30 meters (100 feet) in diameter and is a fast rotator, having a rotational period of only 10.7 minutes. It was first observed on 2 June 1998, by the Spacewatch survey at Kitt Peak National Observatory during 6 days during which it passed 800,000 kilometers (half a million miles) away from Earth (a little more than twice the Earth–Moon distance).
Three views of a computer model of 1998 KY26, derived from radar observations in 1998 | |
| Discovery | |
|---|---|
| Discovered by | Spacewatch (Tom Gehrels) |
| Discovery site | Kitt Peak Obs. |
| Discovery date | 28 May 1998 (discovery: first observed only) |
| Designations | |
MPC designation | 1998 KY26 |
Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 22.54 yr (8,231 days) |
| Aphelion | 1.4819 AU |
| Perihelion | 0.9840 AU |
Semi-major axis | 1.2329 AU |
| Eccentricity | 0.20192 |
Orbital period (sidereal) | 1.37 yr (500.04 days) |
Mean anomaly | 359.504° |
Mean motion | 0° 43m 11.781s / day |
| Inclination | 1.4810° |
Longitude of ascending node | 84.366° |
| 209.378° | |
| Earth MOID | 0.002531 AU (0.985 LD) |
| Physical characteristics | |
Mean diameter | 30 m (effective diameter) 20–40 m (range) |
Synodic rotation period | 0.1782 h 0.1784 h |
| 0.12 0.124 (derived) | |
| X B–R=0.083±0.070 V–R=0.058±0.055 R–I=0.088±0.053 | |
| 25.5±0.3 | |
The object's orbit is well known, since it was recovered in 2002 by the Hawaiian Observatory, and it was most recently observed, from 10 till 15 December 2020, by the Cerro Paranal. La Palma Observatory, and Mauna Kea observatories.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.