Radar images of binary asteroid 2017 YE5 taken by the Arecibo Observatory in June 2018
Discovery[1][2]
Discovered by
Claudine Rinner
Discovery site
Oukaïmeden Obs.
Discovery date
21 December 2017
Designations
MPC designation
2017 YE5
Alternative designations
tltv005[3][4]
Minor planet category
Apollo · PHA · NEO[5]
Orbital characteristics[5]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 2
Observation arc
0.74 yr (270 days)
Earliest precovery date
12 December 2017
Aphelion
4.818 AU
Perihelion
0.818 AU
Semi-major axis
2.818 AU
Eccentricity
0.70964
Orbital period (sidereal)
4.73 yr (1,728 days)
Mean anomaly
155.681°
Mean motion
0° 12m 29.952s / day
Inclination
6.218°
Longitude of ascending node
103.927°
Argument of perihelion
110.794°
Known satellites
1
Earth MOID
0.0209 AU
TJupiter
2.877
Physical characteristics
Mean diameter
0.90±0.05 km or 900±50 m (for each body)[6][7]
Mean density
0.6–1.2 g/cm3[8]
Synodic rotation period
14.88±0.02 h[8]
Geometric albedo
0.02–0.04[8]
Spectral type
D[8]
Apparent magnitude
26.8[9]
Absolute magnitude (H)
19.2 (combined)[5][2] 19.3[6]
2017 YE5 is a binary pair of asteroids of approximately equal size and mass, each about 0.9 km (0.56 mi) in diameter. Classified as a near-Earth asteroid and potentially hazardous object of the Apollo group, 2017 YE5 was discovered by amateur astronomer Claudine Rinner at the Oukaïmeden Observatory on 21 December 2017. On 21 June 2018, the pair of asteroids passed within 15.5 lunar distances or approximately 6 million km (3.7 million mi) from Earth. During the close encounter, 2017 YE5 was resolved in high detail by concurrent radar observations by the Arecibo and Green Bank observatories, along with individual observations by the Goldstone Solar System Radar. 2017 YE5 is likely an extinct or dormant comet due to its distant elliptical orbit and dark red surface.[8]
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2017YE5 is a binary pair of asteroids of approximately equal size and mass, each about 0.9 km (0.56 mi) in diameter. Classified as a near-Earth asteroid...
(2001 WN5)" (2019-06-02 last obs). Retrieved 10 June 2019. "LCDB Data for 2017YE5". Asteroid Lightcurve Database (LCDB). Archived from the original on 10...
object population. The other three are 1994 CJ1, (190166) 2005 UP156, and 2017YE5. In the 1978 novel The Hermes Fall by John Baxter, the asteroid endangers...
2017-04-09). Archived from the original on 2018-01-29. "Sentry: 2015 HV182 (archived)" (computed on 2017-04-06). Archived from the original on 2017-04-14...
Caucasus). Eisenbrauns. pp. 748–749. ISBN 978-1-57506-019-4. Khan Jazab, Yousaf (2017). An Ethno-linguisitic Study of the Karlani Varieities of Pashto. Pashto...
227. Norman (1988), p. 220. Yue (2017), p. 116. Yue (2017), p. 117. Chen (2015), p. 81. Chen (2015), p. 106. Yue (2017), p. 150. Chappell & Li (2016),...
during the meeting @DefenceMinIndia @SpokespersonMoDpic.twitter.com/7XMLDqkYe5". @indiannavy. Retrieved 20 February 2018. SpokespersonNavy (28 February...
Programms". Ametlla de Mar Observatory. Archived from the original on 20 July 2017. Retrieved 16 June 2016. "Minor Planet Discoverers (by number)". Minor Planet...
academic institutions which runs summer schools at the observatory. In March 2017, the observatory has closed and gone into liquidation. The land will be up...