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Re: (meteorobs) Sco/Sgr Complex

Lew
The theta Ophiuchids are one of a large number of radiants active from the
Sco/Sgr region in May/June/July.  Various sources list different radiants,
and I am sure that most of them are duplicates or misindentifications, or
even possible active radiants observed on only one occasion.  But there is
no doubt that activity exists and it is up to us to do a proper job of
sorting out what radiants are real and active.  This is what I have:

IMO gives various radiants around 275°, -23°, with a prominent radiant near
Antares (the alpha Scorpids).

I believe the BAA lists the Ophiuchids as having several weak radiants
around 260°, -20°, and mentions a second radiant at 269°, -23° (max June 9).
Note that the Ophiuchids here do not refer to the N and S Ophiuchids active
in May.

Cook lists the chi Scorpids (247°, -13°, max June 5), the Librids (227°,
-28°, max June 8, the Sagittarids (304°, -35°, max June 11) and the theta
Ophiuchids (267°, -28°, Max June 13).

Finally, Jeff Wood gave me a couple of other radiants said to be definitley
active in the past.  They are the omega Scorpids (243°, -22°, max May 23),
the gamma Sagittarids (272°, -28°, max June 6), iota Scorpids (265°, -40°,
max June 8) and theta Ophiuchids (264°, -20°, several maxima June 4-15).

As you can see no two sources give the same picture, and what I have been
trying to do the last few years is to see what is really active in the month
of June at the present.  Thus I would be happy to receive any of your
observations assuming the radiants are accessible to you.   I suggest any
previous radiant positions be disregarded for the exercise and that we
determine actual radiant structure through plotting.

Tim Cooper 



At 05:09 PM 6/5/96 -0400, you wrote:
>
>Thanks for responding, Tim! I'd personally be interested in any independent 
>radiant and rate info you could provide on the complex... Again, Bob and
George 
>have made clear that these radiants may not be appropriate for beginning 
>observers to monitor, and in any case members of these showers should be 
>reported as sporadics (with or without notation) to NAMN. Still, I'd be 
>interested in adding this info to my list of things to watch out for...
>
>							Lew Gramer
>
>