(meteorobs) Comet P/2006 T1 (LEVY)
Skywayinc at aol.com
Skywayinc at aol.com
Wed Oct 25 08:43:54 EDT 2006
In a message dated 10/25/06 5:23:16 AM Eastern Daylight Time,
marco.langbroek at wanadoo.nl writes:
<< Joe, you must have made a mistake. The theoretic radiant (based on orbital
elements from MPEC 2006-U32, 20 Oct) is at RA 328.5 (21h54m), dec. +56.6,
which is in Cepheus. Very slow meteors, Vgeo 13.9 km/s. >>
Yes . . . thank you for the correction, Marco! I actually did this "back of
the envelope" calculation before going to bed (at around 2 a.m!) and have
since discovered that the position previously given for Gemini was for where Comet
P/2006 T1 would be if Earth and comet were to arrive at the nodal crossing
point at practically the same time (my mind was probably envisioning such a
possible scenario at the comet's next apparition in 2011-2012).
Now . . . having just awakened a little while ago (and with a clearer head) I
can see where I went wrong. My own corrected position for the theoretical
radiant places it at RA 22h 06m, Dec. +60-degrees, which is about a degree to
the north and west of Lambda Cephei. So yes . . . these meteors should be
called "Cepheids," not to be confused (as Roberto Gorelli pointed out) with the
class of variable stars of the same name.
-- joe rao
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