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 |
|---|---|---|---|---|---|
| 742 | Alert Notice 742: V1405 Cas = N Cas 2021 brightening | VPhot Admin | 2021-05-05 (UTC) | Ongoing | Spectroscopy, Photometry |
| 738 | R Aqr monitoring needed in support of Chandra and HST observations | VPhot Admin | 2021-04-05 (UTC) | Ongoing | Spectroscopy, Photometry |
| 739 | Nova in Sagittarius: N Sgr 2021 No. 2 | VPhot Admin | 2021-04-04 (UTC) | Ongoing | Spectroscopy, Photometry |
| 735 | Nova in Cassiopeia: N Cas 2021 | VPhot Admin | 2021-03-19 (UTC) | Ongoing | Spectroscopy, Photometry |
| 724 | VY Aqr observing campaign | VPhot Admin | 2020-11-09 (UTC) | Ongoing | Spectroscopy, Photometry |
| 722 | Alert Notice 722: N Sgr 2020 No. 4 = PNV J17545999-2122401 [V6593 Sgr] | VPhot Admin | 2020-10-02 (UTC) | Ongoing | Spectroscopy, Photometry |
| 717 | Flaring of blazar S5 1803+78 continues | VPhot Admin | 2020-08-17 (UTC) | Ongoing | Photometry |
| 684 | Photometry requested for campaign on V1491 Cyg | VPhot Admin | 2019-11-01 (UTC) | 2040-11-30 (UTC) | Photometry |
| 691 | Request for immediate photometric monitoring of the fading star ASASSN-V J060000.76-310027.83 | VPhot Admin | 2019-10-25 (UTC) | Ongoing | Photometry |
| 730 | Spectroscopy and photometry requested for SS Cyg | VPhot Admin | 2019-10-01 (UTC) | Ongoing | Spectroscopy, Photometry |
| 648 | Semiregular variable reclassified as symbiotic: outburst of ASASSN-V J195442.95+172212.6 = Vend47 (Sge) | VPhot Admin | 2018-08-08 (UTC) | Ongoing | — |
| 634 | Nightly monitoring requested for V1280 Sco = N Sco 2007 | VPhot Admin | 2018-05-11 (UTC) | Ongoing | Photometry |
| 633 | Nova outburst of V392 Per = TCP J04432130+4721280 | VPhot Admin | 2018-04-29 (UTC) | Ongoing | Spectroscopy, Photometry |
| 631 | Coverage requested for current outburst of AG Dra | VPhot Admin | 2018-04-24 (UTC) | Ongoing | Photometry |
| 503 | Request for regular monitoring of the symbiotic variable RT Cru | VPhot Admin | 2014-08-06 (UTC) | 2027-08-31 (UTC) | Photometry |
| 492 | Nova Centauri 2013 = PNV J13544700-5909080 [V1369 Cen] | VPhot Admin | 2013-12-03 (UTC) | 2025-09-08 (UTC) | Spectroscopy |
| 462 | Monitoring of J1407 for next extrasolar ring system transit | VPhot Admin | 2012-06-25 (UTC) | Ongoing | Photometry |