STARITHM
Fermi GBM detects likely long GRB 261030B with initial position uncertainty of 5.8 degrees
AI Summary
On October 30, 2026, Fermi GBM detected a likely long gamma-ray burst (GRB 261030B) with coordinates RA = 101.4, Dec = -52.8 (J2000). The statistical uncertainty in position is approximately 5.8 degrees, indicating a well-localized event requiring follow-up observations.
Measurements
| Event ID | 815089412 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | high |
| Trigger time (UTC) | Fri, 30 Oct 2026 21:43:27 GMT |
| Right ascension (J2000) | 101.43° |
| Declination (J2000) | -52.75° |
| Position error radius | 5.85° |
| GCN notices | 6 |
| GCN circulars | 1 |
Notices (1)
Fermi GBM — GRB · Fri, 30 Oct 2026 21:43:27 GMT
GCN Circulars (1)
GCN-46118 — GRB 261030B
· Fri, 30 Oct 2026 21:54:00 GMT
The Fermi Gamma-ray Burst Monitor (GBM) detected a likely long gamma-ray burst (GRB 261030B) on October 30, 2026, at 21:43:27 UT. The event was located at RA = 101.4, Dec = -52.8 (J2000) with a statistical uncertainty of 5.8 degrees.
AI summary generated Sat, 31 Oct 2026 00:00:09 GMT.