2013 ET

2013 ET
Radar imaging of 2013 ET
Discovery[1]
Discovered byCatalina Sky Survey
Discovery siteMount Lemmon Obs.
(first observed only)
Discovery dateMarch 3, 2013
Designations
2013 ET
2001 SY169
NEO · Apollo
Orbital characteristics[2]
Epoch 2020-May-31 (JD 2459000.5)
Uncertainty parameter 0
Observation arc11 years
Aphelion1.6688 AU (249.65 Gm)
Perihelion0.74228 AU (111.044 Gm)
1.2055 AU (180.34 Gm)
Eccentricity0.38428
1.32 yr (483.49 d)
121.70°
0° 44m 39.048s /day[1]
Inclination4.8515°
171.30°
81.937°
Earth MOID0.0041 AU (610,000 km)[2]
Mercury MOID0.287 AU (42,900,000 km)[1]
Physical characteristics
Dimensions100 m (330 ft)[3]
22.7[2]

2013 ET is a near-Earth asteroid that was first observed on March 3, 2013,[4] six days before its closest approach to Earth. It is estimated to be around 100 meters (330 feet) wide.[3][5] The orbit of 2001 SY169 has been connected to 2013 ET extending the observation arc to 11 years.

Its closest approach to Earth was 0.0065207 AU (975,480 km; 606,140 mi) on March 9, 2013 at 12:09 UT.[2][6] The asteroid also makes close approaches to Mars and Venus.[2] The asteroid was imaged by Goldstone radar on March 10, 2013.[7]

2013 ET was one of four asteroids that passed in the vicinity of Earth during one week in early March 2013.[8] The other asteroids in this group besides 2013 ET, included 2013 EC, 2013 EC20, and 2013 EN20.[8]

  1. ^ a b c "2013 ET". Minor Planet Center. Retrieved 21 August 2017.
  2. ^ a b c d e "(2013 ET)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3629117. Retrieved 21 August 2017.
  3. ^ a b Wall, Mike (5 March 2013). "Big Asteroid to Zoom By Earth This Weekend". Space.com.
  4. ^ Cite error: The named reference MPEC2013-E14 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Goldstone was invoked but never defined (see the help page).
  6. ^ Gray, Melissa (7 March 2013). "Asteroid to fly past Earth this weekend". Light Years. CNN. Archived from the original on 10 March 2013.
  7. ^ Cite error: The named reference PR2013-101 was invoked but never defined (see the help page).
  8. ^ a b "Four Asteroids Buzz Earth in Single Week". Space.com. Retrieved 13 November 2018.