The usual run-of-the-mill comet will look like a comet (star with tail) when the it approaches the sun.
The heat from the Sun melts the surface ice and sublimates to form the " tail " that is visible from earth.
29P/ is unusual since without the heat from the sun, the ice should have remained frozen but instead regular outburst of fan shaped gas can be observed. From the research conducted by Richard Miles, he postulated that this regular out-burst of gas and dust can only be explained by a mechanism called Cryo-volcanism. On earh, volcanism only involves extremely hot lava flow or molten rocks.
With a subzero environment and despite its distance from the sun, a complex dynamic interaction occurred between Methane, Carbon monoxide and Nitrogen causing a sudden eruption similar in appearance to a comet.
The asteroid (20325) HO27 was recently renamed to the author (20325) Julianoey.
Observing campaign for comet C/2013A1 (Siding Spring) during close encounter with Mars.
All astrometric observations of comet 209P (2014) has been published at Minor Planet Center.
Comet McNaught or the Great comet of 2007 visible from La Perouse, Sydney
Astrometry report done as of 31st Decmeber 2014 :
192 CCD photometry observations of novae, supernovae & variable stars to the AAVSO .
(American Association of Variable Star Observers).
We have also confirmed one Supernova SN 2013cz in Galaxy IC4892
Reference CBET 3547.
There has been 200 Minor Planets measured including 2041 astrometry observations
There were also 790 comet observations on 39 different comets.
Work done by Paul Camilleri (The past winner of Berenice and Arthur Page medal) showing some of the interesting observations that were done at Blue Mountains Observatory.
Data obtained on 13th March 2013:
"I found very faint images of an main belt asteroid 2013 CX71 which was discovered in February with pre-discovery images dating back to early January from the SpaceWatch survey in the USA.
The orbital arc for this one was 32days and with our observational data from March 13th extended it out to 62days."
Just one of the examples where Paul has expertly retrieved the faintest of asteroids found in the data obtained from BMO asteroid photometry studies.
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Comet observations following a recent discovery (Comet McNaught 2013 O3) as listed in