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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
874 ASASSN-V J022007.17+610705.5 photometry requested in support of spectroscopy observations Marshall, B. 2024-11-05 (UTC) 2025-12-31 (UTC) Photometry
880 Flare Star Campaign: High-Cadence Photometric and Spectroscopic Observations Hawkins, G. 2025-01-13 (UTC) 2026-12-31 (UTC) Spectroscopy, Photometry
882 Continued monitoring requested for PSN J12355230+2755559 (Com) Waagen, E. 2025-01-20 (UTC) 2026-01-31 (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
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
873 Spectroscopy requested for VV Cephei - Periodic precession of B star's rotational axis after periastron 2025 Schwarz, M. 2025-04-11 (UTC) 2025-12-31 (UTC) Spectroscopy
864 Monitoring and identification of the variable components of HD 83742 / HD 302301 Otero, S. 2025-04-25 (UTC) 2026-09-30 (UTC) Photometry
893 Photometry requested for HD 98800 (TV Crt) poxon, m. 2025-05-06 (UTC) 2026-05-28 (UTC) Photometry
896 Nova in Lup: V462 Lup (N Lup 2025 = ASASSN-25cm = AT 2025nlr) Waagen, E. 2025-06-16 (UTC) 2027-06-16 (UTC) Spectroscopy, Photometry
897 Possible nova in Vel: PNV J10251200-5331109 Waagen, E. 2025-06-25 (UTC) 2027-06-25 (UTC) Spectroscopy, Photometry
902 Spectroscopy requested for the Be star BU Tau = Pleione Waagen, E. 2025-07-01 (UTC) 2026-07-31 (UTC) Spectroscopy
894 EE Cep observing campaign 2025-2026 Lemay, D. 2025-08-05 (UTC) 2026-01-15 (UTC) Photometry, Spectroscopy
905 Nova in Oph: V4371 Oph (N Oph 2025 = TCP J17301230-2753488 = AT 2025wyg) Waagen, E. 2025-09-09 (UTC) 2027-10-09 (UTC) Spectroscopy, 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
911 Crucial photometry requested for ASASSN-20pv HST observation Waagen, E. 2025-11-11 (UTC) 2025-12-13 (UTC) Photometry

See all active campaigns
See past campaigns