Re: Mark IV data off by one day

["Gary W. Billings" <obs681@telusplanet.net>]

Well done Richard!  Thx for the info re asteroid colour, too.    g.



----- Original Message -----
From: "Richard Miles" <rmiles.btee@btinternet.com>
To: "Thomas Droege" <tdroege2@earthlink.net>; "Billings, Gary W."
<obs681@telusplanet.net>; <tass@listserv.wwa.com>
Sent: Saturday, June 12, 2004 10:00 AM
Subject: Re: Mark IV data off by one day


> Tom / Gary,
>
> I have an unambiguous ID from the Mark IV data.
>
> Your TASS ID = 8103940 = 739 Mandeville
>
> The frame said to have been taken on 2453108.82002 was actually taken on
> 2453109.82002
>
> The coincidence between measured and predicted is as follows:
>
> Measured,  Predicted
> RA:  220.5640,  220.5666
> Dec:  18.9797,  18.9791
> V:  11.945,  12.0
> I:  11.221,  11.3
>
> Unambiguous proof that for this one frame the posted date is exactly 1 day
> earlier than actual.
>
> Note that the V-I indices of asteroids equate almost exactly (to within
> about 0.1 mag) of their B-V indices.
> The typicval range of V-I is +0.6 to +1.1.
>
> Cheers,
> Richard Miles
>