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 |
|---|---|---|---|---|---|
| 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 |
| 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 |
| 902 | Spectroscopy requested for the Be star BU Tau = Pleione | Waagen, E. | 2025-07-01 (UTC) | 2026-07-31 (UTC) | Spectroscopy |
| 897 | Possible nova in Vel: PNV J10251200-5331109 | Waagen, E. | 2025-06-25 (UTC) | 2027-06-25 (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 |
| 893 | Photometry requested for HD 98800 (TV Crt) | poxon, m. | 2025-05-06 (UTC) | 2026-05-28 (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 |
| 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 |
| 884 | RW Aur fading episode - monitoring requested | Waagen, E. | 2025-02-04 (UTC) | 2027-12-31 (UTC) | Photometry |
| 881 | HM Sge monitoring needed for HST and SOFIA observations | Goldman, S. | 2025-01-28 (UTC) | 2027-02-15 (UTC) | Photometry |
| 880 | Flare Star Campaign: High-Cadence Photometric and Spectroscopic Observations | Hawkins, G. | 2025-01-13 (UTC) | 2026-12-31 (UTC) | Spectroscopy, Photometry |
| 875 | Monitoring T CrB | Waagen, E. | 2024-10-18 (UTC) | 2026-10-31 (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 |
| 856 | Nova in Ophiuchus: N Oph 2024 = V4370 Oph = TCP J17395720-2627410 | HQ, A. | 2024-03-10 (UTC) | 2026-03-13 (UTC) | Spectroscopy, 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 |
| 813 | Nova in Sagittarius: N Sgr 2023 = TCP J17562787-1714548 | HQ, A. | 2023-02-20 (UTC) | 2026-10-13 (UTC) | 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 |
| 742 | Alert Notice 742: V1405 Cas = N Cas 2021 brightening | HQ, A. | 2021-05-05 (UTC) | Ongoing | Spectroscopy, Photometry |
| 738 | R Aqr monitoring needed in support of Chandra and HST observations | HQ, A. | 2021-04-05 (UTC) | Ongoing | Spectroscopy, Photometry |
| 739 | Nova in Sagittarius: N Sgr 2021 No. 2 | HQ, A. | 2021-04-04 (UTC) | Ongoing | Spectroscopy, Photometry |
| 735 | Nova in Cassiopeia: N Cas 2021 | HQ, A. | 2021-03-19 (UTC) | Ongoing | Spectroscopy, Photometry |
| 724 | VY Aqr observing campaign | HQ, A. | 2020-11-09 (UTC) | Ongoing | Spectroscopy, Photometry |
| 722 | Alert Notice 722: N Sgr 2020 No. 4 = PNV J17545999-2122401 [V6593 Sgr] | HQ, A. | 2020-10-02 (UTC) | Ongoing | Spectroscopy, Photometry |