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 |
|---|---|---|---|---|---|
| 836 | AAVSO and SNEWS partner in campaign to monitor bright supernova progenitors | HQ, A. | 2023-10-13 (UTC) | 2025-08-31 (UTC) | Photometry |
| 722 | Alert Notice 722: N Sgr 2020 No. 4 = PNV J17545999-2122401 [V6593 Sgr] | HQ, A. | 2020-10-02 (UTC) | Ongoing | Spectroscopy, Photometry |
| 742 | Alert Notice 742: V1405 Cas = N Cas 2021 brightening | HQ, A. | 2021-05-05 (UTC) | Ongoing | Spectroscopy, Photometry |
| 771 | Alert Notice 771: V1117 Her in deep fade again | HQ, A. | 2022-03-09 (UTC) | 2025-10-31 (UTC) | Photometry |
| 871 | AM Her monitoring requested | Terada, Y. | 2024-10-08 (UTC) | 2025-08-31 (UTC) | Photometry |
| 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 |
| 849 | Bright nova in Sco: V1723 Sco (= N Sco 2024 = PNV J17261813-3809354) | HQ, A. | 2024-02-10 (UTC) | 2026-02-13 (UTC) | Photometry |
| 882 | Continued monitoring requested for PSN J12355230+2755559 (Com) | Waagen, E. | 2025-01-20 (UTC) | 2026-01-31 (UTC) | Photometry |
| 631 | Coverage requested for current outburst of AG Dra | HQ, A. | 2018-04-24 (UTC) | Ongoing | Photometry |
| 773 | EX Lup outburst coverage requested | HQ, A. | 2022-03-19 (UTC) | 2025-10-31 (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 |
| 717 | Flaring of blazar S5 1803+78 continues | HQ, A. | 2020-08-17 (UTC) | Ongoing | Photometry |
| 881 | HM Sge monitoring needed for HST and SOFIA observations | Goldman, S. | 2025-01-28 (UTC) | 2027-02-15 (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 |
| 462 | Monitoring of J1407 for next extrasolar ring system transit | HQ, A. | 2012-06-25 (UTC) | Ongoing | Photometry |
| 797 | Monitoring requested for V730 Cep | HQ, A. | 2022-10-28 (UTC) | 2025-08-31 (UTC) | Photometry |
| 875 | Monitoring T CrB | Waagen, E. | 2024-10-18 (UTC) | 2026-10-31 (UTC) | Spectroscopy, Photometry |
| 634 | Nightly monitoring requested for V1280 Sco = N Sco 2007 | HQ, A. | 2018-05-11 (UTC) | Ongoing | Photometry |
| 492 | Nova Centauri 2013 = PNV J13544700-5909080 [V1369 Cen] | HQ, A. | 2013-12-03 (UTC) | 2025-09-08 (UTC) | Spectroscopy |
| 735 | Nova in Cassiopeia: N Cas 2021 | HQ, A. | 2021-03-19 (UTC) | Ongoing | Spectroscopy, 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 |
| 856 | Nova in Ophiuchus: N Oph 2024 = V4370 Oph = TCP J17395720-2627410 | HQ, A. | 2024-03-10 (UTC) | 2026-03-13 (UTC) | Spectroscopy, Photometry |
| 739 | Nova in Sagittarius: N Sgr 2021 No. 2 | HQ, A. | 2021-04-04 (UTC) | Ongoing | Spectroscopy, Photometry |
| 813 | Nova in Sagittarius: N Sgr 2023 = TCP J17562787-1714548 | HQ, A. | 2023-02-20 (UTC) | 2026-10-13 (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 |