SN 2020jfo explained

SN 2020jfo was a type II supernova in the Messier 61 galaxy, first observed on 6 May 2020 with an apparent magnitude of 16.01. It was one of the first supernovae for which independent, multi-instrument data was collected before, during, and after the explosion.^[1] Large astronomical surveys like Transiting Exoplanet Survey Satellite (TESS) and Pan-STARRS have played a role in data collection before and after these events.^{[2] [3] [4]}

Notes and References

1. News: Observations of Exploding Star in 'Real Time' Deemed a Major Step Towards Predicting Supernovas . 2021-10-22 . Dvorsky . George . Gizmodo.
2. Sollerman . J. . 2107.14503 . The Type II supernova SN 2020jfo in M 61, implications for progenitor system, and explosion dynamics . Astronomy & Astrophysics . 2021-07-30. 655 . A105 . 10.1051/0004-6361/202141374 . 2021A&A...655A.105S . 239388865 .
3. Vallely . P.J. . Kocanek . CS . Stanek . KZ . Fausnaugh . M . Shappee . BJ . High-cadence, early-time observations of core-collapse supernovae from the TESS prime mission . Monthly Notices of the Royal Astronomical Society . 500 . 4 . February 2021 . 5639–5656 . 10.1093/mnras/staa3675. free . 2010.06596 .
4. Jones . DO . The Young Supernova Experiment: Survey Goals, Overview, and Operations . The Astrophysical Journal . 2021 . 908 . 143 . 143 . 10.3847/1538-4357/abd7f5. 2010.09724 . 2021ApJ...908..143J . 224803297 . free .