TITLE:   GCN CIRCULAR
NUMBER:  26778
SUBJECT: IPN triangulation of GRB 200111A
DATE:    20/01/15 18:10:59 GMT
FROM:    Anna Kozlova at Ioffe Institute  <ann_kozlova@mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

I. G. Mitrofanov, D. V. Golovin, A. S. Kozyrev, M. L. Litvak,
and A. B. Sanin, on behalf of the HEND-Odyssey GRB team,

A. Ridnaia, S. Golenetskii, R. Aptekar, D. Frederiks, D. Svinkin,
and T. Cline on behalf of the Konus-Wind team,

A. Goldstein, M. S. Briggs, and C. Wilson-Hodge
on behalf of the Fermi GBM team,

A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

S. Barthelmy, J. Cummings, H. Krimm, and D. Palmer,
on behalf of the Swift-BAT team, and

W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,
on behalf of the GRS-Odyssey GRB team, report:

The long-duration GRB 200111A (The Fermi GBM team, GCN Circ. 26705;
Insight-HXMT/HE detection: Xiao et al., GCN Circ. 26714)
was detected by Konus-Wind, Fermi (GBM trigger 600448273),
INTEGRAL (SPI-ACS), Mars-Odyssey (HEND), Insight (HXMT/HE),
and Swift (BAT) at about 54668 s UT (15:11:08).
The burst was outside the coded field of view of the BAT.

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  107.869 (07h 11m 29s) +32.551 (+32d 33' 03")
 Corners:
  107.545 (07h 10m 11s) +34.162 (+34d 09' 42")
  107.747 (07h 10m 59s) +34.483 (+34d 28' 58")
  108.134 (07h 12m 32s) +30.686 (+30d 41' 10")
  107.920 (07h 11m 41s) +30.214 (+30d 12' 52")
 ---------------------------------------------
The error box area is about 2864 sq. arcmin, and its maximum
dimension is 4.3 deg (the minimum one is 12.2 arcmin).
The Sun distance was about 167 deg.

This box may be improved.

The IPN localization is consistent with, but reduces the area of, the
Fermi-GBM one.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB200111_T54677/IPN/

The Konus-Wind time history and spectrum will be given in a forthcoming
GCN Circular.