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2012 EG₅
Discovery^[1]
The orbit of the asteroid 2012 EG5 during its flyby on April 1, 2012. The asteroids path is shown by the blue line.
Discovered by	Pan-STARRS
Discovery site	Haleakala Observatory, Haleakalā, Hawaii
Discovery date	March 13, 2012
Designations
MPC designation	2012 EG5
Alternative designations	MPO 230288
Minor planet category	Apollo NEO
Orbital characteristics^[2]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 3^[1]
Observation arc	21^[1] d
Aphelion	3.31229 AU (495.512 Gm)
Perihelion	0.98483 AU (147.328 Gm)
Semi-major axis	2.14856 AU (321.420 Gm)
Eccentricity	0.54163
Orbital period (sidereal)	3.15 yr (1150.32 d) 3.15 yr
Mean anomaly	256.02°
Mean motion	0° 18^m 46.512^s /day^[1]
Inclination	3.02915°
Longitude of ascending node	192.919°
Argument of perihelion	16.002°
Earth MOID	0.0000309134 AU (4,624.58 km)^[2]
Mercury MOID	0.54576 AU (81,645,000 km)^[1]
Jupiter MOID	1.64413 AU (245.958 Gm)^[1]
Physical characteristics
Sidereal rotation period	0.29240 hr^[2]
Absolute magnitude (H)	24.3^[2]

2012 EG5 is an Apollo near-Earth asteroid with an estimated diameter of 47 meters (154 ft).^[3] The asteroid was discovered on March 13, 2012. The asteroid came within 0.001539 AU (230,200 km; 143,100 mi) of Earth during its closest approach on April 1, 2012,^[2] just over half the distance between Earth and the Moon's orbit. It was briefly listed on the Sentry Risk Table with a 1 in 2,778,000 chance of an impact in 2107.^[3] It was removed from the Sentry Risk Table on 1 April 2012.^[4]

References

^ ^a ^b ^c ^d ^e ^f "2012 EG5". Minor Planet Center. Retrieved 16 August 2017.
^ ^a ^b ^c ^d ^e "(2012 EG5)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3601275. Retrieved 20 August 2017.
^ ^a ^b "WayBack Machine archive from 27 March 2012". Wayback Machine. 5 August 2006. Archived from the original on 27 March 2012. Retrieved 1 March 2013.
^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Archived from the original on 2 June 2002.

External links

2012 EG5 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
2012 EG5 at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical properties · Summary
2012 EG5 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

v t e 2012 in space
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Space probe launches	High Resolution Coronal Imager (solar observatory; Jul 2012) Van Allen Probes (Earth orbiter; Aug 2012)
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Discoveries	LEDA 74886 LAE J095950.99+021219.1 BD+48 740 Styx (moon) Q2343-BX442 Phoenix Cluster WISE 1639−6847 SN 2012fr NGC 1277 supermassive black hole Huge-LQG
Comets	78P/Gehrels 21P/Giacobini–Zinner C/2012 E2 (SWAN) 96P/Machholz
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