IPN triangulation of GRB 191001A

The long duration GRB 191001A (Fermi-GBM detection: The Fermi GBM team, GCN Circ. 25893; BALROG localization: Burgess et al., GCN Circ. 25894) was detected by Fermi (GBM trigger 591604915), Konus-Wind, and Swift (BAT) at about 24110 s UT (06:41:50). The burst was outside the coded field of view of the BAT. We have triangulated this GRB to a Konus-GBM annulus centered at RA(2000)=346.113 deg (23h 04m 27s) Dec(2000)=-7.939 deg (-7d 56' 21"), whose radius is 46.475 +/- 2.251 deg (3 sigma). The distance between the optical transient ATLAS19wxr (Smartt, et al., GCN Circ. 25922; Pereyra et al., GCN Circ. 25911) and the annulus center line is 9.3 arcmin, supporting the association of the transient and the GRB. This annulus may be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB191001_T24130/IPN