(meteorobs) 1944 perseids

[Michel Vandeputte]

Hi list,

There was a close approach between the shower and Jupiter on sept. 27th in 
1943. Perhaps this produced those higher activity levels in 1944 or 1945??

Kind regards,

Michel

--------------------------------------------------
From: "Marco Langbroek" <marco.langbroek at wanadoo.nl>
Sent: Thursday, March 31, 2011 9:12 AM
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Subject: Re: (meteorobs) 1944 perseids

> Op 31-3-2011 09:00, Roberto G. schreef:
>>> From: "Dave Hostetter"<dehostetter at cox.net>
>>>
>>
>>> I was contacted today by a local novelist looking for information about 
>>> the
>>> 1944 Perseids for a scene in a new book.  Would anyone have any
>>> information
>>> for that year regarding the actual date and time of peak, and typical
>>> observed rates?
>>>
>>> If nothing else, I have to give the lady credit for actually wanting to
>>> get
>>> the astronomy right!
>>>
>>> Thanks for any help you can give.
>>>
>>> Dave Hostetter
>>
>> In that years (40') the ZHR was around the half that in the recent years,
>> the maximum was between 30 and 60, I not found specific data for
>> 1944, but in 1940 the maximum was 29 ZHR and in 1945 189 ZHR
>> (the maximum occured 16-19 U.T. of the 11-12 August, R.J. Wood
>> from Pine Island, Okinawa (from Handbook Visual Meteor
>> Observations, edited by Paul Roggemans in 1987). In 11 August
>> 1944 the Moon was at the Last Quater, then very bad for to observe
>> Perseids.
>> Best greetings.
>> Roberto Gorelli
>
>
> Please note that what are called "ZHR's" from that time period, are often 
> not a
> ZHR as we know it now, but simply the observed raw hourly rate 
> (uncorrected for
> radiant altitude and limiting magnitude). I.e., the rates mentioned for 
> 1944
> could well be raw rates and the ZHR proper could have been higher.
>
> - Marco
>
> -----
> Dr Marco (asteroid 183294) Langbroek
> Dutch Meteor Society (DMS)
>
> e-mail: dms at marcolangbroek.nl
> http://www.dmsweb.org
> http://www.marcolangbroek.nl
> -----
>
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