Following the Astronote report #2025-224, we initiated follow-up imaging and ToO spectroscopic observations of the possible rebrightening of SN 2024pba with the Nickel 1-m, and the Kast spectrograph on the 3-m Shane telescope at Lick Observatory.
Preliminary photometry gives approximate magnitudes of V=17.04, r=16.82, i=16.63 mag at MJD=60877.435.
The spectrum reveals strong signatures of circumstellar material (CSM) interaction, consistent with a Type IIn supernova at redshift z = 0.019. The H-alpha emission line exhibits a narrow P Cygni component (absorption minimum ~850 km/s) superimposed on an intermediate-width component (~6,400 km/s). In addition, we detect emission features from He I, O I, FeII, Ca II, and [Ca II].
We have requested additional follow-up observations at Lick Observatory. We thank the Lick Observatory staff for enabling these observations. We encourage continued multi-wavelength follow-up to monitor the evolution of this interacting supernova.
| Catalog | Name | Reported RA | Reported DEC | Reported Obj-Type | Reported Redshift | Host Name | Host Redshift | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2024pba | 01:41:13.830 | +49:03:48.33 | SN IIn | 0.0186 | 01:41:13.834 | +49:03:48.33 | SN IIn | 0.0186 |
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