17 March 2016
Perihelion Distance (q)
Aphelion Distance (Q)
Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 19 January 2019
Note: the comet has fragmented into several parts
The comet was discovered visually by Japanese amateur observers, Kaoru Ikeya on 2010
November 2 and 3 and by Shigeki Murakami on November 3; moving eastward at approximately
2'/hr), 47 years since the first discovery by Ikeya (1963 A1).
The comet was magnitude 8.5 at discovery, and 8 the following day. It seemed to be brightening
rapidly, as visual observation by Juan Jose Gonzalez on November 4 put it as bright as 7.6 in
10x50B. The comet was undergoing an outburst, partially confirmed by Ikeya's failure to spot
the comet when he searched the discovery area on November 1. The coma expanded, and the
comet had faded to around 12th magnitude by early December, much faster than a standard
light curve would suggest.
The recovery of P/2010 V1 on December 31, 2015, at magnitude 20 was announced on January
2, 2016, and designated as P/2015 Y2. A secondary fragment (B) was confirmed and announced
on January 5, 2016. The comet is now composed of component A and B with two different
comas, envelopes and tails. Around January 11, 2016, two fainter potential fragments,
designated P/2010 V1-C and P/2010 V1-D have been located, both likely having been
fragmented from P/2010 V1-B. As of January 29, fragments B and D have nearly entirely
desintegrated, and C is undergoing an outburst, making it as bright as P/2010 V1-A.
M.P.E.C. 2016-D09, issued on 2016 Feb. 16, reported:
It is clear that some of the fragments of this comet (especially B) arebecoming very diffuse, with
the consequent difficulty in measuring accuratepositions. The predictions below for fragments D,
F, G, H and I (new) are(now) based solely only on the 2016 observations. The Minor Planet
Center willassign fragment designations to new fragments only upon receipt of observations
from two or more nights (not necessarily from the same observer). Observers are requested to
report observations of potential new fragments under the generic packed designation "PK10V010".
Please report only one new fragment in each message.
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