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 |
|---|---|---|---|---|---|
| 724 | VY Aqr observing campaign | HQ, A. | 2020-11-09 (UTC) | Ongoing | Spectroscopy, Photometry |
| 747 | V627 Peg photometry and spectroscopy requested | HQ, A. | 2021-07-20 (UTC) | Ongoing | Spectroscopy, Photometry |
| 744 | V1117 Her observations requested | HQ, A. | 2021-06-08 (UTC) | Ongoing | Photometry |
| 826 | Supernova in M101 - SN 2023ixf in NGC 5457 | HQ, A. | 2023-05-19 (UTC) | Ongoing | — |
| 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 |
| 902 | Spectroscopy requested for the Be star BU Tau = Pleione | Waagen, E. | 2025-07-01 (UTC) | 2026-07-31 (UTC) | Spectroscopy |
| 730 | Spectroscopy and photometry requested for SS Cyg | HQ, A. | 2019-10-01 (UTC) | Ongoing | Spectroscopy, Photometry |
| 648 | Semiregular variable reclassified as symbiotic: outburst of ASASSN-V J195442.95+172212.6 = Vend47 (Sge) | HQ, A. | 2018-08-08 (UTC) | Ongoing | — |
| 884 | RW Aur fading episode - monitoring requested | Waagen, E. | 2025-02-04 (UTC) | 2027-12-31 (UTC) | Photometry |
| 503 | Request for regular monitoring of the symbiotic variable RT Cru | HQ, A. | 2014-08-06 (UTC) | 2028-08-31 (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 |
| 738 | R Aqr monitoring needed in support of Chandra and HST observations | HQ, A. | 2021-04-05 (UTC) | Ongoing | Spectroscopy, Photometry |
| 897 | Possible nova in Vel: PNV J10251200-5331109 | Waagen, E. | 2025-06-25 (UTC) | 2027-06-25 (UTC) | Spectroscopy, Photometry |
| 893 | Photometry requested for HD 98800 (TV Crt) | poxon, m. | 2025-05-06 (UTC) | 2026-05-28 (UTC) | Photometry |
| 684 | Photometry requested for campaign on V1491 Cyg | HQ, A. | 2019-11-01 (UTC) | 2040-11-30 (UTC) | Photometry |
| 633 | Nova outburst of V392 Per = TCP J04432130+4721280 | HQ, A. | 2018-04-29 (UTC) | Ongoing | Spectroscopy, Photometry |
| 749 | Nova in Vulpecula: N Vul 2021 = TCP J20210770+2914093 | HQ, A. | 2021-07-16 (UTC) | Ongoing | Spectroscopy, Photometry |
| 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 |
| 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 |
| 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 |
| 813 | Nova in Sagittarius: N Sgr 2023 = TCP J17562787-1714548 | HQ, A. | 2023-02-20 (UTC) | 2026-10-13 (UTC) | Spectroscopy, Photometry |
| 739 | Nova in Sagittarius: N Sgr 2021 No. 2 | HQ, A. | 2021-04-04 (UTC) | Ongoing | 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 |
| 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 |
| 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 |