| # | Title | Status | Researcher | Start date | End date | Requested data types |
|---|---|---|---|---|---|---|
| 686 | B-band photometry of TYC 2597-735-1 urgently needed | Archived | AAVSO | 2019-11-19 (UTC) | 2019-12-19 (UTC) | Photometry |
| 685 | EM Cyg monitoring requested | Archived | AAVSO | 2019-11-08 (UTC) | 2019-12-19 (UTC) | Photometry |
| 683 | Nova in Scutum = V659 Sct (N Sct 2019 = ASASSN-19aad, TCP J18395972-102541) | Archived | AAVSO | 2019-10-29 (UTC) | 2019-11-01 (UTC) | Photometry, Spectroscopy |
| 682 | Observing campaign on Polars | Archived | AAVSO | 2019-10-16 (UTC) | 2020-05-31 (UTC) | Photometry |
| 679 | Nova in Scorpius: N Sco 2019 No. 2 = PNV J17370958-3510211 | Archived | AAVSO | 2019-09-15 (UTC) | 2019-09-16 (UTC) | Photometry, Spectroscopy |
| 677 | Alert Notice 677: Recurrent nova V3890 Sgr in outburst | Archived | AAVSO | 2019-08-27 (UTC) | 2019-10-27 (UTC) | Photometry, Spectroscopy |
| 676 | Nova in Orion: N Ori 2019 = PNV J06095740+1212255 | Archived | AAVSO | 2019-08-07 (UTC) | 2019-08-15 (UTC) | Photometry, Spectroscopy |
| 675 | Alert Notice 675: V386 Ser - second rescheduling of HST observations | Archived | AAVSO | 2019-08-04 (UTC) | 2019-08-23 (UTC) | Photometry |
| 674 | UU Aqr being observed with Chandra | Archived | AAVSO | 2019-07-25 (UTC) | 2019-08-13 (UTC) | Photometry |
| 673 | SS Cyg photometry and spectroscopy requested to complement TESS monitoring | Archived | AAVSO | 2019-07-15 (UTC) | 2019-09-15 (UTC) | Photometry, Spectroscopy |
