(153814) 2001 WN5
Nominal orbit of 2001 WN5 passing the Earth–Moon system in June 2028. Earth is the blue dot, the Moon's orbit is gray, and 2001 WN5 is green.
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| Discovery[1] | |
|---|---|
| Discovered by | LONEOS Project (699) |
| Discovery date | 20 November 2001 |
| Designations | |
| MPC designation | (153814) 2001 WN5 |
Apollo  NEO, PHA[1] |
|
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 7327 days (20.06 yr) |
| Aphelion | 2.5119 AU (375.77 Gm) (Q) |
| Perihelion | 0.91167 AU (136.384 Gm) (q) |
| 1.7118 AU (256.08 Gm) (a) | |
| Eccentricity | 0.46742 (e) |
| 2.24 yr (818.05 d) | |
| 142.30° (M) | |
| Inclination | 1.9212° (i) |
| 277.61° (Ω) | |
| 44.439° (ω) | |
| Earth MOID | 0.00199619 AU (298,626 km) |
| Jupiter MOID | 2.82453 AU (422.544 Gm) |
| Physical characteristics | |
| Dimensions | 700–1,500 m[2] |
| 18.3[1] | |
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(153814) 2001 WN5 is a near-Earth Asteroid belonging to the Apollo family.[1] It was first discovered by the LONEOS Project at Anderson Mesa on November 20, 2001,[1] and was later classified as a Potentially Hazardous Asteroid (PHA). It was removed from the Sentry Risk Table on January 30, 2002.[3] There are precovery images dating back to February 10, 1996.[1] The orbit is well determined with an observation arc of 14.9 years using two radar delay observations, and has an Uncertainty Parameter of 0.[1] The asteroid will pass within 250,000 km (0.65 lunar distances) from the Earth on June 26, 2028.[4] During the close approach, the asteroid should peak at about apparent magnitude 6.7,[5] and will be visible in binoculars. It has an absolute magnitude (H) of 18.2.[1] Depending on its characteristics and albedo, it is estimated to be 700 to 1,500 meters in diameter.[2]
References
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<references />, or <references group="..." />External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- Sormano Astronomical Observatory: Close encounter between Asteroid (153814) 2001 WN5 and Earth, diagrams and orbit evolution
- (153814) 2001 WN5 at the JPL Small-Body Database
| Preceded by
367943 Duende (2012 DA14)
|
Large NEO Earth close approach (inside the orbit of the Moon) 26 June 2028 |
Succeeded by 99942 Apophis |
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