Comets - 100P/Hartley - 0100P
Type Periodic Perihelion Date 2 April 2016 Perihelion Distance (q) 2.0 Aphelion Distance (Q) 4.8 Period (Years)   6.3 Eccentricity (e)   0.41 Inclination (i)   25.6 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 8 October 2018
COMETS COMETS
DEEP SKY DEEP SKY
The comet, also known as Hartley 1, was discovered by Malcolm Hartley on June 13, 1985. On 29 April 2164 the comet will pass 0.487 AU (72,900,000 km) from Earth. Date 10x10 mag Error Kphot mag Coma ' 04-Mar-16 17.87 0.15 17.4 0.2 13-Apr-16 17.22 0.02 16.7 0.2 27-May-16 16.99 0.08 16.1 0.2 07-Jun-16 17.49 0.04 17.0 0.2
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