(153201) 2000 WO107

(153201) 2000 WO₁₀₇
	Goldstone radar images showing the two lobes of contact binary 2000 WO107.
Discovery
Discovered by	LINEAR
Discovery site	Lincoln Lab's ETS
Discovery date	29 November 2000
Designations
MPC designation	(153201) 2000 WO107
Alternative designations	2000 WO107
Minor planet category	Aten · NEO · PHA
Orbital characteristics
	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
Semi-major axis	0.9115 AU
Eccentricity	0.7807
Orbital period (sidereal)	0.87 yr (318 days)
Mean anomaly	206.45°
Mean motion	1° 7m 57.72s / day
Inclination	7.7703°
Longitude of ascending node	69.252°
Time of perihelion	13 October 2020
Argument of perihelion	213.72°
Earth MOID	0.0031 AU (460 thousand km; 1.2 LD)
Physical characteristics
Mean diameter	0.510±0.083 km
Synodic rotation period	4.8 hours
Geometric albedo	0.129±0.058
Spectral type	SMASS = X
Absolute magnitude (H)	19.3

(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

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).^[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

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)
PHA	Date	Nominal^(B)	Minimum	Maximum	Abs. mag (H)	Diameter ^(C) (m)	Ref ^(D)
(152680) 1998 KJ9	1914-12-31	0.606	0.604	0.608	19.4	279–900	data
(458732) 2011 MD5	1918-09-17	0.911	0.909	0.913	17.9	556–1795	data
(163132) 2002 CU11	1925-08-30	0.903	0.901	0.905	18.5	443–477	data
69230 Hermes	1937-10-30	1.926	1.926	1.927	17.5	700-900^[5]	data
69230 Hermes	1942-04-26	1.651	1.651	1.651	17.5	700-900^[5]	data
2017 NM6	1959-07-12	1.89	1.846	1.934	18.8	580–1300	data
(27002) 1998 DV9	1975-01-31	1.762	1.761	1.762	18.1	507–1637	data
2002 NY40	2002-08-18	1.371	1.371	1.371	19.0	335–1082	data
2004 XP14	2006-07-03	1.125	1.125	1.125	19.3	292–942	data
2015 TB145	2015-10-31	1.266	1.266	1.266	20.0	620-690	data
(137108) 1999 AN10	2027-08-07	1.014	1.010	1.019	17.9	556–1793	data
(153814) 2001 WN5	2028-06-26	0.647	0.647	0.647	18.2	921–943	data
99942 Apophis	2029-04-13	0.0981	0.0963	0.1000	19.7	310–340	data
2017 MB1	2072-07-26	1.216	1.215	2.759	18.8	367–1186	data
2011 SM68	2072-10-17	1.875	1.865	1.886	19.6	254–820	data
(163132) 2002 CU₁₁	2080-08-31	1.655	1.654	1.656	18.5	443–477	data
(416801) 1998 MZ	2116-11-26	1.068	1.068	1.069	19.2	305–986	data
(153201) 2000 WO107	2140-12-01	0.634	0.631	0.637	19.3	427–593	data
(276033) 2002 AJ129	2172-02-08	1.783	1.775	1.792	18.7	385–1242	data
(290772) 2005 VC	2198-05-05	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

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]

Notes

^ 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

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l "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.
^ ^a ^b ^c "153201 (2000 WO107)". Minor Planet Center. Retrieved 13 January 2018.
^ ^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.
^ ^a ^b ^c "Goldstone Radar Observations Planning: (7753) 1988 XB, 2017 WJ16, and 2000 WO107". Asteroid Radar Research. Retrieved 29 November 2020.
^ ^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.2012.09.013. Retrieved 24 August 2018.
^ 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.
^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 February 2018.

External links

List Of The Potentially Hazardous Asteroids (PHAs), Minor Planet Center
(153201) 2000 WO107 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
(153201) 2000 WO107 at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical properties · Summary
(153201) 2000 WO107 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

Preceded by 2007 UW1	Large NEO Earth close approach (inside the orbit of the Moon) 1 December 2140	Succeeded by (85640) 1998 OX4

[speed-5] 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.

[jpldata-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l "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.

[MPC-object-2] "153201 (2000 WO107)". Minor Planet Center. Retrieved 13 January 2018.

[Mainzer-2011-3] 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.

[Goldstone-4] "Goldstone Radar Observations Planning: (7753) 1988 XB, 2017 WJ16, and 2000 WO107". Asteroid Radar Research. Retrieved 29 November 2020.

[Hermes-6] 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.

[SMASS-spectral-7] 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.

[MPC-Circulars-Archive-8] "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 February 2018.

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