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(153201) 2000 WO107

From Wikipedia, the free encyclopedia
Sub-kilometer asteroid
(153201) 2000 WO107
Goldstone radar images showing the two lobes of contact binary 2000 WO107.
Discovery[1]
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date29 November 2000
Designations
(153201) 2000 WO107
2000 WO107
Aten · NEO · PHA [1] [2]
Orbital characteristics [1]
Epoch 2020-May-31 (JD 2459000.5)
Uncertainty parameter 0
Observation arc 20.0 yr (7,304 days)
Aphelion 1.6231 AU
Perihelion 0.2000 AU
0.9115 AU
Eccentricity 0.7807
0.87 yr (318 days)
206.45°
1° 7m 57.72s / day
Inclination 7.7703°
69.252°
13 October 2020
213.72°
Earth MOID 0.0031 AU (460 thousand km; 1.2 LD)
Physical characteristics
0.510±0.083 km[3]
4.8 hours[4]
0.129±0.058[3]
SMASS = X [1]
19.3[1]

(153201) 2000 WO107 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Aten group with a very well determined orbit.[1] It was discovered on 29 November 2000, by astronomers of the Lincoln Near-Earth Asteroid Research (LINEAR) at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[2] It is a contact binary.[4]

Orbit

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The orbit of this potentially hazardous asteroid (PHA) has been well-established with 20 years of observations. It orbits from inside the orbit of Mercury out to the orbit of Mars. It makes close approaches to all of the inner planets.[1]

2020

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The asteroid came to perihelion on 13 October 2020[1] when it passed the Sun going 88 kilometers per second (320,000 kilometers per hour).[a] The asteroid was not more than 60 degrees from the Sun until 26 November 2020 and was observed by Goldstone radar on 27 November 2020.[4] On 29 November 2020 the asteroid passed 0.02876 AU (4.302 million km; 11.19 LD) from Earth.[1] Even the 2018 orbit solution had a known accuracy of roughly ±150 km for the close approach. With the radar observations the close approach distance is known with an accuracy of roughly ±5 km.

2140

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This asteroid will pass 0.00162 AU (242 thousand km; 0.63 LD) from Earth on 1 December 2140.[1] The 2140 close approach distance is known with an accuracy of roughly ±1000 km. For comparison, the distance to the Moon is about 0.0026 AU (384,400 km).

The Jupiter Tisserand invariant, used to distinguish different kinds of orbits, is 6.228.[1]

History of close approaches of large near-Earth objects since 1908 (A)
PHA Date Approach distance in lunar distances Abs. mag
(H ) 		Diameter (C)
(m) 		Ref (D)
Nominal(B) Minimum Maximum
(152680) 1998 KJ9 1914年12月31日 0.606 0.604 0.608 19.4 279–900 data
(458732) 2011 MD5 1918年09月17日 0.911 0.909 0.913 17.9 556–1795 data
(163132) 2002 CU11 1925年08月30日 0.903 0.901 0.905 18.5 443–477 data
69230 Hermes 1937年10月30日 1.926 1.926 1.927 17.5 700-900[5] data
69230 Hermes 1942年04月26日 1.651 1.651 1.651 17.5 700-900[5] data
2017 NM6 1959年07月12日 1.89 1.846 1.934 18.8 580–1300 data
(27002) 1998 DV9 1975年01月31日 1.762 1.761 1.762 18.1 507–1637 data
2002 NY40 2002年08月18日 1.371 1.371 1.371 19.0 335–1082 data
2004 XP14 2006年07月03日 1.125 1.125 1.125 19.3 292–942 data
2015 TB145 2015年10月31日 1.266 1.266 1.266 20.0 620-690 data
(137108) 1999 AN10 2027年08月07日 1.014 1.010 1.019 17.9 556–1793 data
(153814) 2001 WN5 2028年06月26日 0.647 0.647 0.647 18.2 921–943 data
99942 Apophis 2029年04月13日 0.0981 0.0963 0.1000 19.7 310–340 data
2017 MB1 2072年07月26日 1.216 1.215 2.759 18.8 367–1186 data
2011 SM68 2072年10月17日 1.875 1.865 1.886 19.6 254–820 data
(163132) 2002 CU11 2080年08月31日 1.655 1.654 1.656 18.5 443–477 data
(416801) 1998 MZ 2116年11月26日 1.068 1.068 1.069 19.2 305–986 data
(153201) 2000 WO107 2140年12月01日 0.634 0.631 0.637 19.3 427–593 data
(276033) 2002 AJ129 2172年02月08日 1.783 1.775 1.792 18.7 385–1242 data
(290772) 2005 VC 2198年05月05日 1.951 1.791 2.134 17.6 638–2061 data
(A) This list includes near-Earth approaches of less than 2 lunar distances (LD) of objects with H brighter than 20.
(B) Nominal geocentric distance from the center of Earth to the center of the object (Earth has a radius of approximately 6,400 km).
(C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y.
(D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD)
(E) Color codes:   unobserved at close approach   observed during close approach   upcoming approaches

Physical characteristics

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In the SMASS classification, the object's spectral type is that of an X-type.[1] [6] According to the space-based survey by NASA's NEOWISE mission, the asteroid measures 510 meters in diameter and its surface has an albedo of 0.129.[3]

Numbering and naming

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This minor planet was numbered by the Minor Planet Center on 2 April 2007.[7] As of 2018, it has not been named.[2]


See also

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Notes

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  1. ^ v = 42.1219 √1/r − 0.5/a, where r is the distance from the Sun, and a is the major semi-axis. Objects move fastest at perihelion and slowest at aphelion.

References

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  1. ^ a b c d e f g h i j k l "JPL Small-Body Database Browser: 153201 (2000 WO107)" (2020年11月28日 last obs.). Jet Propulsion Laboratory. Archived from the original on 6 November 2020. Retrieved 29 November 2020.
  2. ^ a b c "153201 (2000 WO107)". Minor Planet Center. Retrieved 13 January 2018.
  3. ^ a b c Mainzer, A.; Grav, T.; Bauer, J.; Masiero, J.; McMillan, R. S.; Cutri, R. M.; et al. (December 2011). "NEOWISE Observations of Near-Earth Objects: Preliminary Results". The Astrophysical Journal. 743 (2): 17. arXiv:1109.6400 . Bibcode:2011ApJ...743..156M. doi:10.1088/0004-637X/743/2/156 . Retrieved 13 January 2018.
  4. ^ a b c "Goldstone Radar Observations Planning: (7753) 1988 XB, 2017 WJ16, and 2000 WO107". Asteroid Radar Research. Retrieved 29 November 2020.
  5. ^ a b Marchis, F.; et al. "Multiple asteroid systems: Dimensions and thermal properties from Spitzer Space Telescope and ground-based observations". Icarus. 221 (2): 1130–1161. Bibcode:2012Icar..221.1130M. doi:10.1016/j.icarus.2012年09月01日3 . Retrieved 24 August 2018.
  6. ^ Binzel, Richard P.; Rivkin, Andrew S.; Stuart, J. Scott; Harris, Alan W.; Bus, Schelte J.; Burbine, Thomas H. (20 March 2004). "Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes" (PDF). Icarus. 170 (2): 259–294. Bibcode:2004Icar..170..259B. doi:10.1016/j.icarus.200404004.
  7. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 February 2018.
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Preceded by Large NEO Earth close approach
(inside the orbit of the Moon)
1 December 2140 Succeeded by

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