TNS Classification Report No. 21428 [ 2025TNSCR2480....1H ]
Date Received (UTC): 2025-06-29 05:17:45 Sender: Xander Hall
Group: DESIRT
Xander J. Hall (CMU), Erica Hammerstein (UC Berkeley), Daniel A. Perley (LJMU), Steve Schulze (NU), Ragnhild Lunnan (OKC/SU), Brendan O’Connor (CMU), Antonella Palmese (CMU), Segev BenZvi (UR), Adam Myers (UWyo) on behalf of the 2DTS team. report/s a classification of object: SN 2025kkb
Type: SLSN-IRedshift: 0.58
Remarks: We classify AT2025kkb/ZTF25aaofttb as a superluminous supernova (SLSN), with an apparent peak magnitude of m_g = 19.4, a K-corrected peak absolute magnitude of M_g = -22.8, and a redshift of z = 0.58. (Astronote 2025-196)
The following Classification spectrum was provided:
Obsdate: 2025-06-25 00:28:48
Instrument: GMOS-S
Telescope: Gemini South
Remarks: Spectrum is corrected for Milky Way extinction.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025kkb
Date Received (UTC): 2025-06-29 05:17:45 Sender: Xander Hall
Group: DESIRT
Xander J. Hall (CMU), Erica Hammerstein (UC Berkeley), Daniel A. Perley (LJMU), Steve Schulze (NU), Ragnhild Lunnan (OKC/SU), Brendan O’Connor (CMU), Antonella Palmese (CMU), Segev BenZvi (UR), Adam Myers (UWyo) on behalf of the 2DTS team. report/s a classification of object: SN 2025kkb
Type: SLSN-IRedshift: 0.58
Remarks: We classify AT2025kkb/ZTF25aaofttb as a superluminous supernova (SLSN), with an apparent peak magnitude of m_g = 19.4, a K-corrected peak absolute magnitude of M_g = -22.8, and a redshift of z = 0.58. (Astronote 2025-196)
The following Classification spectrum was provided:
Obsdate: 2025-06-25 00:28:48
Instrument: GMOS-S
Telescope: Gemini South
Remarks: Spectrum is corrected for Milky Way extinction.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025kkb