fotografija:H.Mikuz
Komet Hartley 2 ali 103P/Hartley je periodični komet z obhodno dobo okoli 6,5 let
pripada pa Jupitrovi družini kometov.
Komet je odkril 15. marca 1986 avstralski astronom Malcolm Hartley na Observatoriju Siding Spring v Avstraliji s pomočjo Schmidtovega teleskopa.
Premer kometa je 1,6 km [2]. V letu 1982 se je močno približal Jupitru. Pričakujejo, da se nam bo v letu 2010 zelo približal. Takrat bi naj bil viden tudi s prostim očesom. Po predvidevanjih bi lahko imel magnitudo okoli 4 je pa nizko na obzorju zjutraj upam da viden.
Komet Hartley 2 je tudi eden izmed ciljev misije Deep Impact. Kometu naj bi se vesoljska sonda približala 11. oktobra 2010 v okviru misije EPOXI.
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četrtek, 3. junij 2010
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