| # | Title | Status | Researcher | Start date | End date | Requested data types |
|---|---|---|---|---|---|---|
| 259 | Alert Notice 259: 1040-51 Nova Velorum 1999 [V382 Vel] | Archived | VPhot Admin | 1999-05-22 (UTC) | 1999-05-25 (UTC) | Spectroscopy, Photometry |
| 257 | Request to monitor 2138+43 SS Cygni for multiwavelength observations | Archived | VPhot Admin | 1999-04-28 (UTC) | 1999-06-30 (UTC) | Photometry |
| 258 | Alert Notice 258: 0915+51 Supernova 1999by in NGC 2841 | Archived | VPhot Admin | 1999-04-28 (UTC) | 1999-05-03 (UTC) | Photometry |
| 256 | 1801-27 Nova Sagittarii 1999 [V4444 Sgr] | Archived | VPhot Admin | 1999-04-25 (UTC) | 1999-04-27 (UTC) | Photometry |
| 255 | Outburst of the recurrent nova 1616-17 U Scorpii | Archived | VPhot Admin | 1999-02-25 (UTC) | 1999-07-04 (UTC) | Photometry |
| 254 | Minor Outburst and Monitoring Requests of Variable Stars GK Persei, AN Ursae Majoris, and QR Andromedae | Archived | VPhot Admin | 1999-02-22 (UTC) | 1999-12-31 (UTC) | Photometry |
| 253 | Special and unique optical monitoring request - 1522+45 GRB 990123 | Archived | VPhot Admin | 1999-01-23 (UTC) | 1999-04-23 (UTC) | Photometry |
| 252 | 1749-31 Nova Scorpii 1998 [V1142 Sco] | Archived | VPhot Admin | 1998-10-21 (UTC) | 1998-10-23 (UTC) | Photometry |
| 251 | 1903-50 Supernova 1998dq in NGC 6754 AND Rare outburst of the TOAD-type cataclysmic variable 1626+21 V592 Herculis AND Fading of 1544+28A R Coronae Bo | Archived | VPhot Admin | 1998-08-28 (UTC) | 1998-11-19 (UTC) | Photometry |
| 250 | Alert Notice 250: 1726-19 Nova Ophiuchi 1998 [V2487 Oph] | Archived | VPhot Admin | 1998-06-15 (UTC) | 1998-06-18 (UTC) | Spectroscopy, Photometry |
