TITLE:   GCN CIRCULAR
NUMBER:  22748
SUBJECT: IPN Triangulation of GRB 180529A (short/hard)
DATE:    18/05/31 10:19:17 GMT
FROM:    Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

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

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

A. Ursi, N. Parmiggiani, F. Verrecchia, A. Bulgarelli,
A. Trois, M. Marisaldi, C. Pittori, M. Tavani, Y. Evangelista,
I. Donnarumma, M. Cardillo, G. Piano, G. Minervini, A. Argan,
F. Lucarelli, A. Zoli, V. Fioretti, F. Fuschino, M. Pilia,
F. Longo, A. Giuliani on behalf of the AGILE team, and

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

The short-duration GRB 180529A (Ursi et al., GCN Circ. 22741)
was detected by AGILE (MCAL), Konus-Wind, Mars-Odyssey (HEND),
INTEGRAL (SPI-ACS), CALET (CGBM), and Swift (BAT)
at about 30554 s UT (08:29:14).
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:
    97.947 (06h 31m 47s) -54.908 (-54d 54' 28")
  Corners:
    96.714 (06h 26m 51s) -54.840 (-54d 50' 23")
    98.264 (06h 33m 03s) -55.310 (-55d 18' 34")
    99.183 (06h 36m 44s) -54.962 (-54d 57' 43")
    97.637 (06h 30m 33s) -54.505 (-54d 30' 19")
  ---------------------------------------------
The error box area is 1976 sq. arcmin, and its maximum
dimension is 1.42 deg (the minimum one is 32.9 arcmin).
The Sun distance was 80 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB180529_T30554/IPN

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