(153201) 2000 WO107

(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]

(153201) 2000 WO107
Goldstone radar images showing the two lobes of contact binary 2000 WO107.
Discovery [1]
Discovered byLINEAR
Discovery siteLincoln 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 arc20.0 yr (7,304 days)
Aphelion1.6231 AU
Perihelion0.2000 AU
0.9115 AU
Eccentricity0.7807
0.87 yr (318 days)
206.45°
1° 7m 57.72s / day
Inclination7.7703°
69.252°
13 October 2020
213.72°
Earth MOID0.0031 AU (460 thousand km; 1.2 LD)
Physical characteristics
Mean diameter
0.510±0.083 km[3]
~5 hours[4]
0.129±0.058[3]
SMASS = X [1]
19.3[1]

    Orbit

    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

    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).[lower-alpha 1] 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

    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 KJ91914-12-310.6060.6040.60819.4279–900data
    (458732) 2011 MD51918-09-170.9110.9090.91317.9556–1795data
    (163132) 2002 CU111925-08-300.9030.9010.90518.5443–477data
    69230 Hermes1937-10-301.9261.9261.92717.5700-900[5]data
    69230 Hermes1942-04-261.6511.6511.65117.5700-900[5]data
    (27002) 1998 DV91975-01-311.7621.7611.76218.1507–1637data
    2002 NY402002-08-181.3711.3711.37119.0335–1082data
    2004 XP142006-07-031.1251.1251.12519.3292–942data
    2015 TB1452015-10-311.2661.2661.26620.0620-690data
    (137108) 1999 AN102027-08-071.0141.0101.01917.9556–1793data
    (153814) 2001 WN52028-06-260.6470.6470.64718.2921–943data
    99942 Apophis2029-04-130.09810.09630.100019.7310–340data
    2017 MB12072-07-261.2161.2152.75918.8367–1186data
    2011 SM682072-10-171.8751.8651.88619.6254–820data
    (163132) 2002 CU112080-08-311.6551.6541.65618.5443–477data
    (416801) 1998 MZ2116-11-261.0681.0681.06919.2305–986data
    (153201) 2000 WO1072140-12-010.6340.6310.63719.3427–593data
    (276033) 2002 AJ1292172-02-081.7831.7751.79218.7385–1242data
    (290772) 2005 VC2198-05-051.9511.7912.13417.6638–2061data
    (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

    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

    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

    Notes
    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
    1. "JPL Small-Body Database Browser: 153201 (2000 WO107)" (2020-11-28 last obs.). Jet Propulsion Laboratory. Archived from the original on 6 November 2020. Retrieved 29 November 2020.
    2. "153201 (2000 WO107)". Minor Planet Center. Retrieved 13 January 2018.
    3. 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. "Goldstone Radar Observations Planning: (7753) 1988 XB, 2017 WJ16, and 2000 WO107". Asteroid Radar Research. Retrieved 29 November 2020.
    5. 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.2012.09.013. 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.2004.04.004.
    7. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 February 2018.
    Preceded by
    2007 UW1    		 Large NEO Earth close approach
    (inside the orbit of the Moon)
    1 December 2140    		 Succeeded by
    (85640) 1998 OX4
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