(7888) 1993 UC

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(7888) 1993 UC
Discovery [1]
Discovered by Robert H. McNaught
Discovery date20 October 1993
Designations
Orbital characteristics [1]
Epoch 13 January 2016 (JD  2457400.5)
Uncertainty parameter 0
Observation arc 9456 days (25.89 yr)
Aphelion 4.0540  AU (606.47  Gm) (Q)
Perihelion 0.81827 AU (122.411 Gm) (q)
2.4361 AU (364.44 Gm) (a)
Eccentricity 0.66411 (e)
3.80  yr (1388.8  d)
274.28°
0° 15m 33.156s / day
Inclination 26.082°
165.92°
323.07°
Earth  MOID 0.0889665 AU (13.30920 Gm)
Physical characteristics
~2.7 km (1.7 mi) [2]
Equatorial escape velocity
~1.3 m/s (3 mph)
2.340  h (0.0975  d) [1]
U
14.1 (2013 peak) [3]
15.1 [1]

    (7888) 1993 UC is a near-Earth minor planet in the Apollo group. [1] It was discovered by Robert H. McNaught at the Siding Spring Observatory in Coonabarabran, New South Wales, Australia, on 20 October 1993. [1] The asteroid has an observation arc of 34 years and has a well determined orbit. [1] Its estimated size is 2.3 to 5.2 km. [4]

    On 20 March 2013, the asteroid passed 49 lunar distances or 0.12598 AU (18,846,000 km; 11,711,000 mi) from Earth at a relative velocity of 21.8 km/s (49,000 mph). [1] The approach posed no threat to Earth. (7888) 1993 UC is not classified as a potentially hazardous asteroid (PHA) because its Earth MOID (Minimum Orbit Intersection Distance) is only 0.084 AU, [1] and only objects with an Earth MOID less than 0.05 AU are considered PHAs. [5]

    It was discovered to be a binary asteroid by Arecibo Observatory in March 2013. [6]

    References

    1. 1 2 3 4 5 6 7 8 9 10 "JPL Close-Approach Data: 7888 (1993 UC)" . Retrieved 11 April 2016. 2012-11-25 last obs (arc=23 years)
    2. ↑ (E.A.R.N.) physical data for (7888) 1993UC
    3. ↑ "1993 UC Ephemerides for 20 March 2013". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 19 March 2013.
    4. ↑ NASA "NEO Earth Close Approach Tables", Retrieved on 21 December 2012.
    5. ↑ NASA/JPL "NEO Program FAQ", Retrieved on 21 December 2012.
    6. ↑ Dr. Lance A. M. Benner (18 November 2013). "Binary and Ternary near-Earth Asteroids detected by radar". NASA/JPL Asteroid Radar Research. Archived from the original on 8 June 2004. Retrieved 1 March 2014.
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