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Overview

The American Association of Variable Star Observers (AAVSO) observing campaigns are coordinated observational efforts focused on specific astronomical objects, particularly variable stars. These campaigns invite amateur and professional astronomers worldwide to contribute observations, leading to a comprehensive dataset that can yield substantial scientific results.

Active Campaigns
# Title Principal Investigator Start date End date Requested data types
631 Coverage requested for current outburst of AG Dra HQ, A. 2018-04-24 (UTC) Ongoing Photometry
633 Nova outburst of V392 Per = TCP J04432130+4721280 HQ, A. 2018-04-29 (UTC) Ongoing Spectroscopy, Photometry
634 Nightly monitoring requested for V1280 Sco = N Sco 2007 HQ, A. 2018-05-11 (UTC) Ongoing Photometry
648 Semiregular variable reclassified as symbiotic: outburst of ASASSN-V J195442.95+172212.6 = Vend47 (Sge) HQ, A. 2018-08-08 (UTC) Ongoing
691 Request for immediate photometric monitoring of the fading star ASASSN-V J060000.76-310027.83 HQ, A. 2019-10-25 (UTC) Ongoing Photometry
717 Flaring of blazar S5 1803+78 continues HQ, A. 2020-08-17 (UTC) Ongoing Photometry
462 Monitoring of J1407 for next extrasolar ring system transit HQ, A. 2012-06-25 (UTC) Ongoing Photometry
722 Alert Notice 722: N Sgr 2020 No. 4 = PNV J17545999-2122401 [V6593 Sgr] HQ, A. 2020-10-02 (UTC) Ongoing Spectroscopy, Photometry
724 VY Aqr observing campaign HQ, A. 2020-11-09 (UTC) Ongoing Spectroscopy, Photometry
730 Spectroscopy and photometry requested for SS Cyg HQ, A. 2019-10-01 (UTC) Ongoing Spectroscopy, Photometry
735 Nova in Cassiopeia: N Cas 2021 HQ, A. 2021-03-19 (UTC) Ongoing Spectroscopy, Photometry
738 R Aqr monitoring needed in support of Chandra and HST observations HQ, A. 2021-04-05 (UTC) Ongoing Spectroscopy, Photometry
739 Nova in Sagittarius: N Sgr 2021 No. 2 HQ, A. 2021-04-04 (UTC) Ongoing Spectroscopy, Photometry
742 Alert Notice 742: V1405 Cas = N Cas 2021 brightening HQ, A. 2021-05-05 (UTC) Ongoing Spectroscopy, Photometry
744 V1117 Her observations requested HQ, A. 2021-06-08 (UTC) Ongoing Photometry
747 V627 Peg photometry and spectroscopy requested HQ, A. 2021-07-20 (UTC) Ongoing Spectroscopy, Photometry
893 Photometry requested for HD 98800 (TV Crt) poxon, m. 2025-05-06 (UTC) 2026-05-28 (UTC) Photometry
919 Monitoring needed for PSN J12355230+2755559 (Com) in support of Chandra observations Waagen, E. 2026-03-13 (UTC) 2026-05-30 (UTC) Photometry
902 Spectroscopy requested for the Be star BU Tau = Pleione Waagen, E. 2025-07-01 (UTC) 2026-07-31 (UTC) Spectroscopy
872 Nova in Scorpius: N Sco 2024 No. 3 = V1725 Sco (TCP J17064645-3528079) Waagen, E. 2024-09-10 (UTC) 2026-09-11 (UTC) Spectroscopy, Photometry
920 Photometry requested to monitor potential Circumstellar Medium (CSM) interaction of Type Ic-BL SN 2026gzf Xu, J. 2026-03-26 (UTC) 2026-09-26 (UTC) Photometry
864 Monitoring and identification of the variable components of HD 83742 / HD 302301 Otero, S. 2025-04-25 (UTC) 2026-09-30 (UTC) Photometry
813 Nova in Sagittarius: N Sgr 2023 = TCP J17562787-1714548 HQ, A. 2023-02-20 (UTC) 2026-10-13 (UTC) Spectroscopy, Photometry
875 Monitoring T CrB Waagen, E. 2024-10-18 (UTC) 2026-10-31 (UTC) Spectroscopy, Photometry
880 Flare Star Campaign: High-Cadence Photometric and Spectroscopic Observations Hawkins, G. 2025-01-13 (UTC) 2026-12-31 (UTC) Spectroscopy, Photometry