Astronomy:(153814) 2001 WN5

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(153814) 2001 WN5
Discovery[1]
Discovered byLONEOS
Discovery siteAnderson Mesa Stn.
Discovery date20 November 2001
Designations
(153814) 2001 WN5
2001 WN5
Minor planet category
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc21.88 yr (7,990 days)
|{{{apsis}}}|helion}}2.5114 AU
|{{{apsis}}}|helion}}0.9125 AU
1.7119 AU
Eccentricity0.4670
Orbital period2.24 yr (818 days)
Mean anomaly46.227°
Mean motion0° 26m 24s / day
Inclination1.9197°
Longitude of ascending node277.51°
44.569°
Earth MOID0.0015 AU (0.6 LD)
Physical characteristics
Mean diameter0.932±0.011 km[2]
Geometric albedo0.097±0.016[2]
Absolute magnitude (H)18.3[1]


(153814) 2001 WN5 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group.

2028 Earth/Moon approach[1]
Date & Time Approach
to
Nominal distance uncertainty
region
(3-sigma)
2028-Jun-26 05:23 Earth 248714 km ± 25 km[3]
2028-Jun-26 07:43 Moon 502854 km ± 26 km

Description

Nominal orbit of 2001 WN5 (green line) passing the Earth–Moon system in June 2028

It was discovered by the Lowell Observatory Near-Earth-Object Search at Anderson Mesa Station on 20 November 2001,[4] The potentially hazardous asteroid was removed from the Sentry Risk Table on 30 January 2002.[5]

There are precovery images dating back to 10 February 1996.[1] The orbit is well determined with an observation arc of 14.9 years which includes two radar delay observations. It has an Uncertainty Parameter of 0.[1]

The asteroid will pass 248,700 km (0.647 LD) from the Earth on 26 June 2028.[1] During the close approach, the asteroid should peak at about apparent magnitude 6.7,[6] and will be visible in binoculars. It has an absolute magnitude (H) of 18.2.[1]

According to observations by the NEOWISE mission, the asteroid measures approximately 0.9 km in diameter and its surface has a rather low albedo of 0.097.[2]


References

External links

Preceded by
367943 Duende (2012 DA14)
Large NEO Earth close approach
(inside the orbit of the Moon)

26 June 2028
Succeeded by
99942 Apophis