Overview
The American Association of Variable Star Observers (AAVSO) observing campaigns are coordinated observational efforts focused on specific astronomical objects, particularly variable stars, which are stars that change in brightness over time. These campaigns invite amateur and professional astronomers worldwide to contribute observations, leading to a diverse and comprehensive dataset that can yield substantial scientific results.
Active Campaigns
| # | Title | Researcher | Start date | End date | Requested data types |
|---|---|---|---|---|---|
| 874 | ASASSN-V J022007.17+610705.5 photometry requested in support of spectroscopy observations | marshabr89 | 2024-11-05 (UTC) | 2024-12-20 (UTC) | Photometry |
| 876 | Photometry requested for Hat-P-23 in exoplanet study | weo | 2024-11-05 (UTC) | 2024-11-20 (UTC) | Photometry |
| 877 | Photometry of GOTO065054.49+593624.51 requested | weo | 2024-11-05 (UTC) | 2024-12-15 (UTC) | Photometry |
| 875 | Monitoring T CrB | weo | 2024-10-18 (UTC) | 2026-10-31 (UTC) | Spectroscopy, Photometry |
| 871 | AM Her monitoring requested | terada | 2024-10-08 (UTC) | 2025-08-31 (UTC) | Photometry |
| 865 | Photometry and Spectroscopy of WR 140 (V1687 Cyg) through its upcoming periastron | astronoel | 2024-09-10 (UTC) | 2025-06-30 (UTC) | Spectroscopy, Photometry |
| 870 | Unveiling CI Hyi as a symbiotic system | jtoala | 2024-09-10 (UTC) | 2025-09-10 (UTC) | Photometry |
| 872 | Nova in Scorpius: N Sco 2024 No. 3 = V1725 Sco (TCP J17064645-3528079) | weo | 2024-09-10 (UTC) | 2026-09-11 (UTC) | Spectroscopy, Photometry |
| 867 | Nova in Vulpecula: V615 Vul ( = N Vul 2024 = PNV J19430751+2100204) | weo | 2024-08-02 (UTC) | 2025-08-31 (UTC) | Spectroscopy, Photometry |
| 856 | Nova in Ophiuchus: N Oph 2024 = V4370 Oph = TCP J17395720-2627410 | AAVSO | 2024-03-10 (UTC) | 2026-03-13 (UTC) | Spectroscopy, Photometry |
| 851 | Multiwavelength coverage requested for V695 Cyg study with HST | AAVSO | 2024-02-14 (UTC) | 2024-12-31 (UTC) | Spectroscopy, Photometry |
| 849 | Bright nova in Sco: V1723 Sco (= N Sco 2024 = PNV J17261813-3809354) | AAVSO | 2024-02-10 (UTC) | 2026-02-13 (UTC) | Photometry |
| 838 | Monitoring requested for 11 dwarf novae in support of HST observations in 2023-2024 | AAVSO | 2023-11-01 (UTC) | 2024-12-31 (UTC) | Photometry |
| 836 | AAVSO and SNEWS partner in campaign to monitor bright supernova progenitors | AAVSO | 2023-10-13 (UTC) | 2025-08-31 (UTC) | Photometry |
| 826 | Supernova in M101 - SN 2023ixf in NGC 5457 | AAVSO | 2023-05-19 (UTC) | Ongoing | — |
| 859 | Photometry and spectroscopy requested for bright binaries being observed with CHARA - Revised | AAVSO | 2023-04-18 (UTC) | 2025-08-28 (UTC) | Spectroscopy, Photometry |
| 813 | Nova in Sagittarius: N Sgr 2023 = TCP J17562787-1714548 | AAVSO | 2023-02-20 (UTC) | 2026-10-13 (UTC) | Spectroscopy, Photometry |
| 804 | Alert Notice 804: RW Cep dimming underway - observations requested | AAVSO | 2022-12-16 (UTC) | 2024-12-31 (UTC) | Spectroscopy, Photometry |
| 797 | Monitoring requested for V730 Cep | AAVSO | 2022-10-28 (UTC) | 2025-08-31 (UTC) | Photometry |
| 773 | EX Lup outburst coverage requested | AAVSO | 2022-03-19 (UTC) | 2025-10-31 (UTC) | Spectroscopy, Photometry |
| 771 | Alert Notice 771: V1117 Her in deep fade again | AAVSO | 2022-03-09 (UTC) | 2025-10-31 (UTC) | Photometry |
| 754 | Alert Notice 754: Monitoring requested for 15 VY Scl cataclysmic variables in support of HST observations | AAVSO | 2021-09-14 (UTC) | 2024-12-31 (UTC) | Spectroscopy, Photometry |
| 747 | V627 Peg photometry and spectroscopy requested | AAVSO | 2021-07-20 (UTC) | Ongoing | Spectroscopy, Photometry |
| 749 | Nova in Vulpecula: N Vul 2021 = TCP J20210770+2914093 | AAVSO | 2021-07-16 (UTC) | Ongoing | Spectroscopy, Photometry |
| 746 | High-resolution spectroscopy and photometry requested for rho Cas study | AAVSO | 2021-06-18 (UTC) | 2024-12-31 (UTC) | Spectroscopy, Photometry |