To ALL BACODINE SITES:                                       09 Apr 95

This is the first of a 9-notice series -- the oldest GRB is 17 days ago and
the most recent is 6 days ago.  There were a couple problems in getting
the data for the IPN arc analysis for which we are currently working on
to eliminate that delay problem.  In the near future (a month or two)
we hope to have these notices distributed within 1-3 days after the GRB.

These are REAL NOTICES with REAL NUMBERS for REAL GRBs.  I had some feedback
that some people thought these were "samples" of a forthcoming BACODINE product.
These plus the previous 8 are all real GRBs.  I apologize if my wording
in the initial set of notices confused people.  The locations given in these
IPN/BACODINE/HUNTSVILLE notices are real and can be used for follow-up
observations and for restricting the sky region for post-observation analysis.

I have added two more fields to these notices.  Some people thought the
Huntsville spacecraft Az & El coordinates would be useful.

As always, people should feel free to comment on this and all aspects
of the BACODINE system.  ("We're here to help.")


Scott Barthelmy                      NASA-GSFC, Code 661, Greenbelt, MD   20771
PHONE:  301-286-3106                 (work)
FAX:    301-286-1684                 (1st choice,  -1682 2nd choice)
EMAIL:  scott@xtelab.gsfc.nasa.gov
PAGER:  1-800-SKY-PAGE, PIN 2618712  (by phone)
PAGER:  2618712@skymail.com          (by email, 240 characters max per message)

///////////////////////////////////////////////////////////////////////////////
TITLE:          IPN/BACODINE/HUNTSVILLE LOCALIZATION
TRIGGER_NUM:    3476
DATE_TIME:      95/03/20 00:04:24.75 UT
BACO_RA:        280.45d {+18h 41m 48s}   (J2000)
BACO_DEC:        +0.99d {+00d 59' 41"}
HUNT_RA:        274.86d {+18h 19m 26s}   (J2000)
HUNT_DEC:        -1.95d {-01d 57' 05"}
B_H_DELTA:      6.33 [deg]
HUNT_SC_AZ:     262 [deg]
HUNT_SC_EL:     -74 [deg]  {Zen_angle=164.00}
SUN_POSTN:      359.00d {+23h 56m 00s}    -0.43d {-00d 25' 57"}   (Current)
SUN_B_DIST:     78.62 [deg]
MOON_POSTN:     215.47d {+14h 21m 53s}   -14.06d {-14d 03' 34"}   (Current)
MOON_B_DIST:    65.99 [deg]
ANNULUS_RA:     347.4752d {+23h 09m 54s}   (J2000)
ANNULUS_DEC:     -2.3166d {-02d 18' 59"}
ANNULUS_RADIUS: 66.871 [deg]
ANNULUS_WIDTH:   0.233 [deg]  (Total width)

This IPN localization is preliminary.  The "total width" of the annulus
was selected to include all known uncertainties and systematics. The final
analysis will reduce this width. All follow-up queries should be addressed to
Kevin Hurley (UC Berkeley, khurley@sunspot.ssl.berkeley.edu).

SPECIAL NOTES:   There was no immediate BACODINE notice for this GRB
There was only a MAXBC notice (at T+10 min).  The BACO_RA/DEC listed above
are from the MAXBC notice.

This IPN annulus is tabulated below along the segment that intersects
a combination of the BACODINE and Huntsville error circles. The position
of maximum probability is marked.

RA      DEC      (J2000)

280.562	-10.153
280.550	-9.753
280.539	-9.353
280.529	-8.953
280.520	-8.553
280.513	-8.153
280.507	-7.753
280.502	-7.353
280.498	-6.953
280.496	-6.553
280.494	-6.153
280.494	-5.753
280.495	-5.353
280.497	-4.953
280.501	-4.553
280.505	-4.153
280.511	-3.753
280.518	-3.354
280.526	-2.954        <=== Max probability
280.536	-2.554
280.546	-2.154
280.558	-1.754
280.571	-1.354
280.585	-0.955
280.601	-0.555
280.617	-0.155
280.635	0.244
280.654	0.644
280.674	1.043
280.695	1.443
280.718	1.842
280.741	2.242
280.766	2.641
280.792	3.040
280.820	3.439
280.848	3.838
280.878	4.237
280.909	4.636
280.941	5.034
--------------------------- THE END ---------------------------