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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
648 Semiregular variable reclassified as symbiotic: outburst of ASASSN-V J195442.95+172212.6 = Vend47 (Sge) HQ, A. 2018-08-08 (UTC) Ongoing
849 Bright nova in Sco: V1723 Sco (= N Sco 2024 = PNV J17261813-3809354) HQ, A. 2024-02-10 (UTC) 2026-02-13 (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
881 HM Sge monitoring needed for HST and SOFIA observations Goldman, S. 2025-01-28 (UTC) 2027-02-15 (UTC) Photometry
884 RW Aur fading episode - monitoring requested Waagen, E. 2025-02-04 (UTC) 2027-12-31 (UTC) Photometry
631 Coverage requested for current outburst of AG Dra HQ, A. 2018-04-24 (UTC) Ongoing Photometry
634 Nightly monitoring requested for V1280 Sco = N Sco 2007 HQ, A. 2018-05-11 (UTC) Ongoing Photometry
893 Photometry requested for HD 98800 (TV Crt) poxon, m. 2025-05-06 (UTC) 2026-05-28 (UTC) Photometry
916 Photometric characterization of accretion in young stellar objects during protoplanetary disk dispersal Micolta, M. 2026-01-28 (UTC) 2026-02-11 (UTC) Photometry
684 Photometry requested for campaign on V1491 Cyg HQ, A. 2019-11-01 (UTC) 2040-11-30 (UTC) Photometry
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
744 V1117 Her observations requested HQ, A. 2021-06-08 (UTC) Ongoing Photometry
503 Request for regular monitoring of the symbiotic variable RT Cru HQ, A. 2014-08-06 (UTC) 2028-08-31 (UTC) Photometry
906 Nova in Cen: V1935 Cen (N Cen 2025 = PNV J14372177-5847400) Waagen, E. 2025-09-24 (UTC) 2027-09-30 (UTC) Photometry, Spectroscopy
907 Nova in Sgr: V7994 Sgr (N Sgr 2025 No. 4 = TCP J18035290-3127298 = TCP J18035278-3127240) Waagen, E. 2025-09-24 (UTC) 2027-09-30 (UTC) Photometry, Spectroscopy
902 Spectroscopy requested for the Be star BU Tau = Pleione Waagen, E. 2025-07-01 (UTC) 2026-07-31 (UTC) Spectroscopy
813 Nova in Sagittarius: N Sgr 2023 = TCP J17562787-1714548 HQ, A. 2023-02-20 (UTC) 2026-10-13 (UTC) Spectroscopy, Photometry
856 Nova in Ophiuchus: N Oph 2024 = V4370 Oph = TCP J17395720-2627410 HQ, A. 2024-03-10 (UTC) 2026-03-13 (UTC) Spectroscopy, Photometry
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
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
633 Nova outburst of V392 Per = TCP J04432130+4721280 HQ, A. 2018-04-29 (UTC) Ongoing Spectroscopy, Photometry
890 Nova in Sgr: V7993 Sgr = N Sgr 2025 No. 3 = TCP J18022164-3310319 Waagen, E. 2025-03-26 (UTC) 2027-12-31 (UTC) Spectroscopy, Photometry