General information
GRB 260302A is a likely long gamma-ray burst triggered by Fermi/GBM at 14:19:40 UT on 2026-03-02, with an on-ground GBM localization at RA=239.3 deg, Dec=-61.8 deg (stat. uncertainty 2.7 deg). An optical counterpart was reported detected by SVOM/VT about 2.4 days after the trigger.
Wavelength coverage
- Gamma-ray: Fermi/GBM trigger and localization reported.
- Optical: SVOM/VT detection in VT_B (400–650 nm) and VT_R (650–1000 nm) bands.
- X-ray: The event is stated to be detected by EP/WXT (no flux/lightcurve details provided here).
No radio, infrared, ultraviolet, or spectroscopy observations are mentioned in the provided circular text.
Lightcurve and spectrum
- Optical photometry at mid-time 58.03 h post-trigger: VT_B = 21.4 ± 0.1 AB (53×50 s), VT_R = 21.2 ± 0.1 AB (50×50 s); not corrected for Galactic extinction.
Redshift
What’s special vs typical