DRAFT
2026-05-15 13:20:02
Type: Object/s-Data/Analysis
Bibcode: 2026TNSAN.135....1M
Photometric follow-up of a Type-Ia Supernova SN 2026fvx with BHTOM.space Global Telescope Network
Authors: P.J. Mikolajczyk (U.Wroclaw/NCBJ, PL), L. Wyrzykowski (U.Warsaw/NCBJ, PL/EASST.eu), K. Kotysz (U.Wroclaw/U.Warsaw, PL), J. Majumdar (U.Warsaw, PL), P. Pessi (NCBJ, PL), V. Bozza (U.Salerno, Italy), W. Burzyński (U. Białystok, PL), J.M.Carrasco (U.Barcelona, SP), J. Drazkowski (Lidzbark Warmiński Observatory, PL), F. Dubois (VVS, BE), C. Galdies (Znith Astronomy Observatory, Malta), V. Gkiokas (National Observatory of Athens, Greece), F.-J. Hambsch (ROAD Observatory, Chile), A. Jania (U.Wroclaw), S. Kurowski (Jagiellonian University, PL/SOA Bolęcina, PL), M. Michalski (EEAST, PL), R. Nowakowski (Kosmiczna Akademia, PL), A. Popowicz (SUTO, PL), J.K.T. Qvam (Horten Videregaende Skole, NO), A. Rzepka (U.Wroclaw), W. Ogloza (University of National Education Commission, PL), K. Siennicki (U.Warsaw), M. Siwak (Konkoly Observatory, HU), W. Skrobacz (H. Jordan Youth Center, PL), J. Surma (EEAST, PL), W. Thuillot (Paris Observatory, PSL University, CNRS, FR), K. Vrontaki (National Observatory of Athens, Greece), S. Zola (Jagiellonian University, PL)
Source Group: BHTOM
Keywords: Photometry, Transient, Supernova
Abstract:
We report on the optical multiband photometric follow-up of SN 2026fvx conducted with the BHTOM.space Global Telescope Network.

The BHTOM.space network coordinated an observing campaign to monitor the SN 2026fvx supernova discovered on March 17, 2026, by Ofek et al. (more: https://www.wis-tns.org/object/2026fvx/discovery-cert ). Later, it was classified as a Type-Ia supernova.

Follow-up observations commenced on March 23, 2026, approximately six days after initial discovery and are still ongoing. Our network managed to observe the object before its peak brightness (April 4-6, 2026). During this period, approximately 1200 measurements were obtained using many different instruments: from 30- & 50-mm Seestar cameras to 1.2-m OHP & Kryoneri telescopes. Photometric data were taken in U, B, V, R & I filters as well as in Sloan u’g’r’i’z’ bands and subsequently transformed into Gaia Synthetic Photometry (GaiaSP) for consistency. SN 2026fvx was also observed by the ATLAS sky survey. There are archival measurements from ATLAS, PTF, and WISE spanning the 2009-2026 period.

Observations of the object with BHTOM will continue until it disappears in the background. 

Detailed light curves and associated statistics are available on the webpage: https://bh-tom2.astrouw.edu.pl/public/targets/SN%202026fvx .Further details and the full photometric dataset are available for download by registered users of the BHTOM.space platform. 

Acknowledgements: BHTOM.space is based on the open-source TOM Toolkit by LCO and has been supported by the European Union's research and innovation programmes under grant agreements No 101004719 (OPTICON-RadioNet Pilot, ORP) and 101131928 (ACME).

Show current TNS values
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 2026fvx 12:14:58.133 +63:47:16.41 SN Ia 0.004846 12:14:58.133 +63:47:16.41 SN Ia 0.004846
AstroNote Publication Timestamp Title Authors
2026-102 2026-04-16 10:21:06 gri-band photometry of SN 2026fvx with the Stone Edge Observatory 0.5m telescope Will Langford, Vivek Cherian, Ava Lewin, Hexi Jin, Richard Kron (University of Chicago)
2026-104 2026-04-20 10:02:25 SN 2026fvx : Photometric and SED follow-up of the SN in NGC 4205 with the RAPAS ProAm network Thierry Midavaine (I73, Club Eclipse), Christophe Boussin (AT60 OMP), Gilles Bouttard (AT60 OMP), Christian Buil (STAROS), Philippe Cétier (R73, SAT), Thibaut Cours (AT60 OMP), Jean-Louis Dumont (R73, SAT), Cedric Latgé (Saint-Orens/ADAGIO), Pierre-Yves Lechapelain (Observatoire de Bretagne Sud), Arnaud Leroy (A07, Uranoscope ), Elisabeth Maris (CEPHEE73), Patrick Martinez (A05, ADAGIO) and AT60-OMP Pierre Mazet (A05, ADAGIO), Pierre-Jean Mercier (R73, SAT), Christian Pantacchini (Observatoire de Benayes), Christian Sartini (Qfastro/ADAGIO), Marc Serrau (R83, Observatoire de Dauban), Fabian Schussler (CEA-Irfu DPhP), Michel Dennefeld (IAP), William Thuillot (LTE Observatoire de Paris)
2026-76 2026-03-18 15:43:01 SN 2026fvx: Kinder Follow-up Observations of a Rapidly Brightening Young Type Ia Supernova Y.-H. Lee, M.-H. Lee, T.-W. Chen, Y.-C. Pan, H.-Y. Hsiao, A. Dutta, A. Aryan (all NCU), S. Yang (HNAS), C.-Y. Cheng, H.-M. Chang, P.-Y. Wang, S.-Y. Chen, S. Gupta, S. Bhattacharjee, C.-H. Lai, A. Sankar.K, C.-S. Lin, W.-J. Hou, H.-C. Lin, J.-K. Guo (all NCU), D. Xu, Z.-P. Zhu (both NAOC), Z. N. Wang, D. C. Qiang, L. L. Fan (all HNAS), J. H. Gillanders, S. J. Smartt, H. F. Stevance, S. Srivastav (all Oxford), M. Nicholl, M. Fulton, K. W. Smith, C. Angus, A. Aamer (all QUB) and T. Moore (STScI) report:

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