2002 NY₄₀ is a sub-kilometer near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 800 meters (2,600 feet) in diameter.[1] The contact binary with a bilobated, peanut-like shape was first observed on 14 July 2002 by the LINEAR automated system in New Mexico. On 18 August 2002, it passed Earth at a distance of 540,000 km.[3] It was observed with adaptive optics by the Midcourse Space Experiment.[4]

2002 NY₄₀

Radar image of 2002 NY40 taken by the Arecibo Observatory in August 2002, revealing its contact binary shape
Discovery[1]
Discovered by	LINEAR
Discovery site	Lincoln Laboratory ETS
Discovery date	14 July 2002 (first observed only)
Designations
MPC designation	2002 NY40
Minor planet category	NEO · Apollo · PHA[1][2]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc	3.01 yr (1,099 d)
Aphelion	3.5047 AU
Perihelion	0.5987 AU
Semi-major axis	2.0517 AU
Eccentricity	0.7082
Orbital period (sidereal)	2.94 yr (1,073 d)
Mean anomaly	231.63°
Mean motion	0° 20m 7.44s / day
Inclination	5.8869°
Longitude of ascending node	145.46°
Argument of perihelion	269.68°
Earth MOID	0.0010 AU (0.3896 LD)
Physical characteristics
Mean diameter	800 m
Absolute magnitude (H)	19.0[2]

Orbit and classification

It orbits the Sun at a distance of 0.6–3.5 AU once every 2 years and 11 months (1,073 days; semi-major axis of 2.05 AU). Its orbit has an eccentricity of 0.71 and an inclination of 6° with respect to the ecliptic.[2]

References

External links

• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• APOD Aug 17, 2002
• 2002 NY40 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
• 2002 NY40 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical Properties · Summary
• 2002 NY40 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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