Comet d'Arrest 69P
Comet d'Arrest is a periodic Jupiter-family comet, orbiting between Mars and Jupiter.
It passed 0.15124 AU (22,625,000 km; 14,059,000 mi) from the Earth on August 12, 1976.
The comet last came to perihelion (closest approach to the Sun) on March 2, 2015,
but it was in an unfavorable apparition as it had a solar elongation
of less than 30 degrees from October 2014 until May 2015.
In 1991, Andrea Carusi and Giovanni B. Valsecchi (Istituto Astrofisica Spaziale, Rome), and Ľubor Kresák and
Margita Kresáková (Slovak Astronomical Institute, Bratislava)
independently suggested this comet was the same as a comet observed by Philippe de La Hire in 1678.
It was first observed by Heinrich Ludwig d'Arrest, in Leipzig, Germany, on 28th and 30 June 1851.
The comet nucleus is estimated at about 3.2 km in diameter
was one of the very first comets I observed and it was not perticularly
It was visually faint at perihelion at 6th magniture, making it a binocular object, but it was
even in a 12.5 inch Mac-Cass, looking sort of
like an unfocused star, perfectly round and barely more than a point
I tried to get pictures with my Olympus OM-1 SLR
Astrocamera, but got nothing that I could actually say was the comet.
This did not curb my enthusiasm for comet
It did steel my resolve to get better gear so I
wouldn't miss out on future attampts.