Subject: [SLR-Mail] No. 1112: ILRS Weekly Tracking Records
From: Van S. Husson, ILRS Central Bureau <Husson, Van <Van.Husson@honeywell-tsi.com>>
********************************************************************************
SLR Electronic Mail 2003-08-12 09:12:00 UTC Message No. 1112
********************************************************************************
Author: Van S. Husson, ILRS Central Bureau
Subject: ILRS Weekly Tracking Records
Dear Colleagues,
Occasionally we get some emails from sites
telling us they had a really good week of ranging and
they were interested to know how their week compares to
the BEST. This email should answer those questions.
Thirteen months ago, we published a report on the
weekly tracking records (reference: SLRMail#0962).
We noted that tracking 200 passes in a week was
a major accomplishment and required cooperation of
the weather. Stations which achieved this milestone
were listed. So consider this as an update.
In SLRmail#0962, a few of the pass counts were slightly
inflated due to an accounting error. Back then, I
incorrectly assumed LEO normal point passes were not
segmented (i.e. supplied in two or more parts).
Since achieving the 200 passes/week has become more routine,
we have raised the bar (5%) to 210 passes, which is exactly
an average of 30 passes per day for 7 consecutive days.
Here are the sites that achieved this performance bar
(210 passes/week) and their number of occurrences
(frequency) since January 1995.
Time Span
Sta# Location Freq yyyy-ww to yyyy-ww
---- -------------- ---- ------------------
7110 Monument Peak 32 1997-19 to 2003-28
7090 Yarragadee 27 2002-05 to 2003-31
7839 Graz 12 1999-37 to 2003-12
7810 Zimmerwald 7 2002-30 to 2003-31
7840 Herstmonceux 6 2002-14 to 2003-12
7849 Mt. Stromlo 3 1999-16 to 2000-31
7105 Greenbelt 1 2002-32 to 2002-32
Below is the top ten all time BEST tracking weeks.
Please note that two sites were within 15 passes
of averaging 50 passes/week (WOW!).
Week
Sta# Location yyyy-ww Passes Comments
---- -------------- ------- ------ ---------------------
7839 Graz 2003-08 337 >48 passes/week
7090 Yarragadee 2003-09 335 almost 48 passes/week
7810 Zimmerwald 2003-08 325
7090 Yarragadee 2003-24 311
7810 Zimmerwald 2003-28 310 265 of these in 2 colors
7090 Yarragadee 2003-10 284
7110 Monument Peak 2003-26 282 >40 passes/week
7090 Yarragadee 2002-08 279
7090 Yarragadee 2002-06 276
7810 Zimmerwald 2003-12 274
To include a few more sites not mentioned above that should
receive honorable mention by averaging 25 passes a day for
7 days (i.e. >=175 passes/week) since 1995 are:
Week
Sta# Location yyyy-ww Passes Comments
---- -------------- ------- ------ -------------------------
7843 Orroral 1995-32 209
8834 Wettzell 2003-22 207
7501 Hartebeesthoek 2002-28 205
7237 Changchun 2002-49 199 Only ranges at night
7832 Riyadh 2003-25 199
From: ”Husson, Van” <Van.Husson@honeywell-tsi.com>
********************************************************************************