Lunar occultation oc C/2008 C1 Chen Gao
- A Vegas Luna has advised:
according to my calculations the new comet C2008 C1 Chen-Gao will be
occulted by the moon on Apr. 9th - 10th after it's close encounter
with Holmes at the end of this month .. it should be fairly bright
since perihelion is Apr. 17th ..
On my calculations using the latest set of elements for the comet (MPEC 2008-F03], an
occultation occurs (D) on April 10, with the night-time region of visibility being China,
Korea, far-eastern Russia, and Japan. At the time the moon is a very favourable 25%
illuminated. However the total mag of the comet will only be 11.8 - which means the
maximum surface brightness will be much less. Consequently I expect the earthshine will be
much brighter than the comet.
For those interested in monitoring this event, indicative times [UTC] are as follows:
y m d h m s
08 Apr 10 13 38 29 Beijing
08 Apr 10 14 16 29 Hanoi
08 Apr 10 13 43 25 Seoul
08 Apr 10 13 49 0 Shanghai
08 Apr 10 13 56 25 Taipei
08 Apr 10 13 45 26 Tokyo
Note that these times could change by over a minute (especially for Hanoi) as a result of
orbit improvements between now and the event.
If there is interest, I could post a more comprehensive set of predictions...