New version released on ! New sites and equipment applications.


Supernova in M101 - SN 2023ixf in NGC 5457

Active Dates: May 19, 2023 – Dec. 19, 2025


Abstract:

A supernova (SN 2023ixf) has been discovered in the galaxy NGC 5457 (M101) by Koichi Itagaki. It has been identified as a Type II supernova based on spectroscopy conducted using the SPRAT instrument on the Liverpool Telescope by D. Perley et al. Observers are encouraged to monitor the supernova’s evolution using various types of observations like visual, CCD/CMOS, DSLR, and spectroscopy in multiple bands.

Justification:

Observing the supernova as it evolves will help understand its behavior and characteristics. Frequent observations in multiple bands can provide valuable data on the rate of decline and other attributes of the supernova.

Requested Data Types:

Photometry



Targets
Name Magnitude Variability Type Photometry Notes Spectroscopy Notes
SN 2023ixf 11.00 SN II-L

Cadence: Nightly

Precision: 100 mmag

Not Requested

Spectroscopy Lines:

No spectroscopy lines provided

Photometry Filters:

B (Johnson), V (Johnson), R (Cousins), I (Cousins), g (Sloan), r (Sloan), i (Sloan), z (Sloan), Other (Please Specify)

Comparison Stars:

Finder charts with comparison stars are available via the AAVSO Variable Star Plotter (VSP, https://apps.aavso.org/vsp/).


Co-Authorship

Observers are eligible for co-authorship.

Additional Observer Input:

All bands are requested, including TG/TB/TR and visual, and CV/CR as supernova becomes faint.

Additional Submission Location:

Not provided



Notes:

Principal Investigator: Elizabeth O. Waagen; Imported Campaign (Alert Notice #826)