Re: TRMM ... 25063 97074A

Edward S Light (
Mon, 14 Jun 1999 07:45:10 -0400 (EDT)

William B Magnusson wrote ...

> The mystery concerns the satellite TRMM ... 25063 97074A. None of us can see
> it. No matter how hard we look or how careful we are in assembling the data.

and Jay Respler replied ...

> I've seen it at mag 4.5-6.  Use Intrinsic Mag of 4.5 with QUICKSAT and see
> what kind of predictions you get with that.

and Ed Cannon added ...

> I've seen TRMM at one-power quite a few times, including from
> the Univ. of Texas at Austin campus, which is in the middle
> of the city.  Most of the time the magnitude predictions I
> have are pretty accurate, especially for a payload.  (Oh, I
> just double-checked and found that I have it with a Quicksat
> intrinsic magnitude of +2.8 [= +4.3 Molczan], so that may be
> one thing to take into consideration.)

We've also seen it naked eye (from a location where it hard to see 4th
magnitude stars without optical aid) on three different passes at
apparent magnitude 2-1/2 to 3-1/2 corresponding to "quicksat"
(i.e. 1000 km, zero astronomical phase) intrinsic magnitudes from 2.1-2.3 .

Clear and dark skies!
   Ed Light

Lakewood, NJ, USA
N 40.1072, W 074.2317, Hgt +21 m (69 ft)