| Object | UT Date | UT | JD | Comp Star | ΔV | σ(ΔV) | V | σ(V) |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| PKS1510-08 | 2009-04-28 | 08:52:00 | 2454949.86944 | 1 | 4.518 | 0.002 | 16.12 | 0.03 |
| PKS1502+106 | 2009-04-28 | 09:15:53 | 2454949.88603 | A | 0.745 | 0.003 | ||
| Mrk 501 | 2009-04-28 | 09:28:19 | 2454949.89466 | A | 1.187 | 0.002 | 13.80 | 0.01 |
| BL Lac | 2009-04-28 | 11:01:21 | 2454949.95927 | B | 2.263 | 0.002 | 15.20 | 0.01 |
