2008 FF5

2008 FF₅ is the asteroid with the second-smallest known perihelion of any known object orbiting the Sun. Its extreme orbital eccentricity brings it within 0.079 AU of the Sun (26% of Mercury's perihelion) and as far as 4.487 AU from the Sun (well beyond the orbit of Mars).

2008 FF5

Discovery[1]
Discovered by	Mt. Lemmon Survey (G96) 1.5-m reflector
Discovery date	28 March 2008
Designations
Minor planet category	Mercury crosser Venus crosser Apollo Asteroid Earth crosser Mars crosser
Orbital characteristics[2]
Epoch 31 March 2008 (JD 2454556.5)
Uncertainty parameter 9
Aphelion	4.49421629 AU (672.325187 Gm)
Perihelion	0.079138425 AU (11.8389399 Gm)
Semi-major axis	2.28667736 AU (342.082064 Gm)
Eccentricity	0.96539152
Orbital period (sidereal)	3.46 yr (1263.0 d)
Mean anomaly	12.042691°
Mean motion	0° 17m 6.123s / day
Inclination	2.6285675°
Longitude of ascending node	15.296731°
Argument of perihelion	19.899259°
Earth MOID	0.00725225 AU (1,084,921 km)
Jupiter MOID	0.964477 AU (144.2837 Gm)
Physical characteristics
Dimensions	70–160 m[3]
Absolute magnitude (H)	23.1