2010 TD54

Last updated

2010 TD54
Asteroid 2010TD54 orbit.jpg
Orbital diagram of 2010 TD54 during its near-Earth encounter on 12 Oct 2010
Discovery [1]
Discovered by Mount Lemmon Srvy.
Discovery site Mount Lemmon Obs.
Discovery date9 October 2010
Designations
2010 TD54
NEO  · Apollo [1] [2]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 6
Observation arc 3 days
Aphelion 3.2396 AU
Perihelion 0.7020 AU
1.9708 AU
Eccentricity 0.6438
2.77 yr (1,011 days)
159.97°
0° 21m 22.32s / day
Inclination 4.3045°
18.607°
76.068°
Earth  MOID 0.000178 AU
0.0693 LD
Physical characteristics
Dimensions5 m [3]
5–10 m [4]
0.01167 h (dated) [5]
0.0229317 h [3] [lower-alpha 1]
0.20 (assumed) [3]
Srv [6]
28.9 [1]

    2010 TD54 is a tiny asteroid and fast rotator, classified as a near-Earth object of the Apollo group, approximately 5 meters in diameter. It was first observed by the Mount Lemmon Survey in October 2010, when the asteroid crossed through the Earth-moon system and had a close encounter with Earth. [4]

    Contents

    Orbit and classification

    2010 TD54 orbits the Sun at a distance of 0.7–3.2  AU once every 2 years and 9 months (1,011 days). Its orbit has an eccentricity of 0.64 and an inclination of 4° with respect to the ecliptic. [1]

    The body's observation arc begins with its first observations by the Mount Lemmon Survey and only spans over a period of 3 days until 12 October 2010. It has been observed since then. [2]

    Close approach

    2010 TD54 made its closest approach at 10:51, 12 October 2010 UTC (6:51 EDT a.m.) at 0.000346  AU (51,800  km ; 32,200  mi ). It is one of the closest known approaches of an asteroid to Earth, at which time the object appeared at a magnitude of 14. It was first observed by of the Catalina Sky Survey 's telescopes north of Tucson, Arizona on 9 October 2010. [4]

    It has an Earth minimum orbit intersection distance of 0.000178086 AU (26,600 km; 16,600 mi), which corresponds to 0.0693 lunar distance. [1] It was removed from the Sentry Risk Table on 11 October 2010. [7] The asteroid may have passed 0.0009 AU (135,000 km; 83,700 mi) from Earth in October 1979, but the nominal orbit suggests it passed millions of kilometres from Earth in 1979. [1]

    Physical characteristics

    2010 TD54 is a stony asteroid, characterized as a Srv subtype. [6]

    Rotation period

    In November 2010, a rotational light curve of 2010 TD54 was obtained from photometric observations, which showed that the asteroid is a fast rotator. Light curve analysis gave a well-defined rotation period of 0.0229317 hours (1 minute and 23 seconds) with a brightness amplitude of 0.92 magnitude ( U=3 ). A high amplitude typically indicates that the body has an irregular, elongated rather than spherical shape. [lower-alpha 1] This result supersedes a previously obtained lightcurve with a shorter period of 0.01167 hours ( U=1 ). [5]

    Diameter and albedo

    The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5 metres (16 feet) based on an absolute magnitude of 28.9. [3] NASA's press release gave an estimated diameter of 5 to 10 meters (16 to 33 feet). [4]

    See also

    Notes

    1. 1 2 Ryan (2011) web: rotation period 0.0229317±0.0000002 hours with a brightness amplitude of 0.92±0.03 mag. Summary figures for (2010 TD54) at the LCDB and Bill Ryan at Magdalena Ridge Observatory

    Related Research Articles

    <span class="mw-page-title-main">2004 FH</span>

    2004 FH is a micro-asteroid and near-Earth object of the Aten group, approximately 30 meters in diameter, that passed just 43,000 km (27,000 mi) above the Earth's surface on 18 March 2004, at 22:08 UTC. It was the 11th closest approach to Earth recorded as of 21 November 2008. The asteroid was first observed on 16 March 2004, by astronomers of the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico.

    (6491) 1991 OA is a highly eccentric, stony asteroid, classified as near-Earth object and potentially hazardous asteroid, approximately half a kilometer in diameter. It was discovered on 16 July 1991, by American astronomer Henry E. Holt at the U.S. Palomar Observatory in California.

    (467336) 2002 LT38, is a sub-kilometer asteroid and suspected tumbler, classified as a near-Earth object and potentially hazardous asteroid of the Aten group, approximately 240 meters (790 ft) in diameter. It was discovered on 12 June 2002, by astronomers of the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.

    (416151) 2002 RQ25 is a carbonaceous asteroid of the Apollo group, classified as near-Earth object and potentially hazardous asteroid, approximately 0.2 kilometers in diameter. It was discovered on 3 September 2002, by the Campo Imperatore Near-Earth Object Survey (CINEOS) at the Italian Campo Imperatore Observatory, located in the Abruzzo region, east of Rome.

    (471240) 2011 BT15, provisional designation 2011 BT15, is a stony, sub-kilometer sized asteroid and fast rotator, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group. It had been one of the objects with the highest impact threat on the Palermo Technical Impact Hazard Scale.

    <span class="nowrap">(285263) 1998 QE<sub>2</sub></span> Near-Earth asteroid

    (285263) 1998 QE2, provisional designation 1998 QE2, is a dark asteroid and synchronous binary system, classified as near-Earth object and potentially hazardous asteroid of the Amor group, approximately 3 kilometers in diameter. It was discovered on 19 August 1998, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. Its sub-kilometer minor-planet moon was discovered by radar on 30 May 2013.

    <span class="nowrap">(192642) 1999 RD<sub>32</sub></span> Asteroid and suspected contact binary

    (192642) 1999 RD32, provisional designation: 1999 RD32, is an asteroid and suspected contact binary on an eccentric orbit, classified as a large near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 5 kilometers (3 miles) in diameter. It was discovered on 8 September 1999, at a magnitude of 18, by astronomers of the LINEAR program using its 1-meter telescope at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, United States. The asteroid is likely of carbonaceous composition and has a rotation period of 17.08 hours.

    <span class="nowrap">2012 TC<sub>4</sub></span>

    2012 TC4 is a tumbling micro-asteroid classified as a bright near-Earth object of the Apollo group, approximately 10 meters (30 feet) in diameter. It was first observed by Pan-STARRS at Haleakala Observatory on the Hawaiian island of Maui, in the United States. As of 1 October 2017, it had a small Earth minimum orbital intersection distance of 0.000149 AU (22,300 km). On 12 October 2017, it passed Earth at 0.00033524 AU (50,151 km). The asteroid was removed from the Sentry Risk Table on 16 October 2017 and with a 5-year observation arc has a well-known orbit. For example, on the previously risk-listed date of 12 October 2022, it is now known that the asteroid will be more than 3 AU (450 million km) from Earth.

    2001 AV43 is a very small, monolithic asteroid and fast rotator, classified as a near-Earth object of the Apollo group, approximately 30 meters (98 feet) in diameter. It was first observed on 5 January 2001, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The presumed S-type asteroid has a rotation period of only 10 minutes. It has an exceptionally low MOID of 0.66 lunar distance (LD) and will approach Earth at 0.81 LD on 11 November 2029.

    2015 HM10 is an irregular shaped asteroid and sub-kilometer near-Earth object that passed near the Earth on 7 July 2015, at a distance of 442,000 kilometers or 1.15 lunar distances.

    <span class="nowrap">(436724) 2011 UW<sub>158</sub></span>

    (436724) 2011 UW158, provisionally known as 2011 UW158, is a stony, walnut-shaped asteroid and fast rotator, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 300 meters in diameter. It was discovered on 25 October 2011, by Pan-STARRS at Haleakala Observatory on the island of Maui, Hawaii, in the United States.

    <span class="nowrap">(162058) 1997 AE<sub>12</sub></span> Asteroid

    (162058) 1997 AE12 is a stony, sub-kilometer asteroid and likely the slowest rotator known to exist. It is classified as near-Earth object of the Amor group and measures approximately 800 meters in diameter. The asteroid was discovered on 10 January 1997 by the Spacewatch survey at Kitt Peak National Observatory near Tucson, Arizona

    <span class="nowrap">2014 JO<sub>25</sub></span> Near-Earth asteroid discovered in 2014.

    2014 JO25 is a near-Earth asteroid. It was discovered in May 2014 by astronomers at the Catalina Sky Survey near Tucson, Arizona - a project of NASA's NEO (Near Earth Object) Observations Program in collaboration with the University of Arizona.

    <span class="nowrap">(190166) 2005 UP<sub>156</sub></span>

    (190166) 2005 UP156 is a stony asteroid and binary system, classified as near-Earth object of the Apollo group, approximately 1 kilometer in diameter. It was discovered on 31 October 2005, by astronomers of the Spacewatch survey at the Kitt Peak National Observatory in Arizona, United States. Its minor-planet moon with an orbital period of 40.25 hours was discovered in 2017.

    <span class="nowrap">(163899) 2003 SD<sub>220</sub></span>

    (163899) 2003 SD220 is a sub-kilometer asteroid and tumbling slow rotator, classified as near-Earth object and potentially hazardous asteroid of the Aten group, which orbit the Sun between Venus and Earth. Its orbital period of 0.75 years means that it orbits the Sun about 4 times for every 3 of the Earth. It was discovered on 29 September 2003, by astronomers of the Lowell Observatory Near-Earth-Object Search at Anderson Mesa Station near Flagstaff, Arizona.

    <span class="nowrap">(505657) 2014 SR<sub>339</sub></span> Asteroid of the Apollo group

    (505657) 2014 SR339, provisional designation 2014 SR339, is a dark and elongated asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 970 meters (3,200 feet) in diameter. It was discovered on 30 September 2014, by NASA's Wide-field Infrared Survey Explorer telescope (WISE) in Earth's orbit. Closely observed at Goldstone and Arecibo in February 2018, it has a rotation period of 8.7 hours.

    (143651) 2003 QO104, provisional designation 2003 QO104, is a stony asteroid, slow rotator and suspected tumbler on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Amor and Apollo group, respectively. It was discovered on 31 August 2003, by astronomers of the Near-Earth Asteroid Tracking program at the Haleakala Observatory in Hawaii, United States. The Q-type asteroid has a rotation period of 114.4 hours and possibly an elongated shape. It measures approximately 2.3 kilometers (1.4 miles) in diameter and belongs the largest potentially hazardous asteroids known to exist.

    (385343) 2002 LV, provisional designation 2002 LV, is a stony asteroid on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.5 kilometers in diameter. It was discovered on 1 June 2002, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The Sr-type asteroid has a rotation period of 6.2 hours and is likely elongated.

    (154276) 2002 SY50, provisional designation 2002 SY50, is a stony asteroid on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.1 kilometers (0.7 miles) in diameter. It was discovered on 30 September 2002, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The K-type asteroid has a rotation period of 4.8 hours. It will make a close encounter with Earth on 30 October 2071.

    <span class="nowrap">2016 DV<sub>1</sub></span> Apollo near-Earth asteroid

    2016 DV1 is a near-Earth asteroid estimated to be roughly 29–65 meters (95–210 feet) in diameter. It is a fast rotating asteroid of the Apollo group which was first observed by the Mount Lemmon Survey on 28 February 2016, just days before it passed Earth at 1 lunar distance (LD) on 3 March 2016. The elongated fast rotator has a rotation period of 303 seconds. It was recovered in February 2021 as it was about to pass Earth on 3 March 2021 at a distance of 0.0053 AU (2.1 LD; 790,000 km; 490,000 mi).

    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: (2010 TD54)" (2010-10-12 last obs.). Jet Propulsion Laboratory . Retrieved 28 September 2017.
    2. 1 2 "2010 TD54". Minor Planet Center. Retrieved 28 September 2017.
    3. 1 2 3 4 "LCDB Data for 2012 TC4". Asteroid Lightcurve Database (LCDB). Retrieved 28 September 2017.
    4. 1 2 3 4 "Small Asteroid to Pass Within Earth-Moon System Tuesday". NASA. 11 October 2010. Retrieved 28 September 2017.
    5. 1 2 Hicks, M.; Rhoades, H. (October 2010). "The near-Earth asteroid 2010 TD54: The fastest rotating natural body known in the solar system?". The Astronomer's Telegram. 2984 (2984): 1. Bibcode:2010ATel.2984....1H . Retrieved 28 September 2017.
    6. 1 2 Popescu, M.; Birlan, M.; Binzel, R.; Vernazza, P.; Barucci, A.; Nedelcu, D. A.; et al. (November 2011). "Spectral properties of eight near-Earth asteroids". Astronomy and Astrophysics. 535: 15. Bibcode:2011A&A...535A..15P. doi: 10.1051/0004-6361/201117118 .
    7. ↑ "Sentry: Earth Impact Monitoring – Removed Objects". NASA/JPL CINEOS – Center for Near Earth Object Studies. Retrieved 28 September 2017.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.