100P/Hartley

100P/Hartley, also known as Hartley 1, is a periodic, Jupiter family comet in the Solar System.[1]

100P/Hartley

Discovery
Discovered by	Malcolm Hartley
Discovery date	June 13, 1985
Alternative designations	1991 VII; 1985 VII
Orbital characteristics ^A
Epoch	2011-Dec-05 2455900.5
Aphelion	4.841 AU
Perihelion	1.990 AU
Semi-major axis	3.416 AU
Eccentricity	0.4172
Orbital period	6.31 a
Inclination	25.661°
Earth MOID	1.00 AU (150,000,000 km)[1]
Last perihelion	2016 Apr. 2[2] 2009 Dec. 6
Next perihelion	2022-Aug-10 (Horizons)

On 29 April 2164 the comet will pass 0.487 AU (72,900,000 km; 45,300,000 mi) from Earth.[3]

References

1. "100P/Hartley 1". NASA JPL.
2. "100P/Hartley Orbit". Minor Planet Center. Retrieved 2014-11-01.
3. "JPL Close-Approach Data: 100P/Hartley 1". 2010-07-12. Retrieved 2012-02-23.

External links

• 100P/Hartley 1 – Seiichi Yoshida @ aerith.net
• 100P at Kronk's Cometography
• 100P/Hartley 1 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters