Table 1
Observational circumstances during the spectroscopic observations of asteroid (357439) 2004 BL86.
| Date (UT) | V | Φ | Δ | AM | Texp | Itime | Cy | S | H | Spectrum | Analog |
| (mag) | (°) | (AU) | (min) | (s) | (′′) | (%) | (μm) | ||||
|
|
|||||||||||
| Feb. 7, 2015, 10h 22m | 16.5 | 50.7 | 0.107 | 1.66 | 12 | 120 s | 3 | 0.9 | 19 | 0.8−2.5 | HD 72911 |
| Feb. 6, 2015, 02h 30m | 16.4 | 50.6 | 0.095 | 1.30 | 40 | 600 s | 4 | 1.0 | 15 | 0.4−0.9 | HD 76617 |
Reference. We list the date, mid-time exposure time, apparent magnitude, phase angle, distance Earth-asteroid, airmass (AM), total exposure time (Texp), individual exposure time and number of cycles, seeing (S), humidity (H), spectral interval, and solar analogs.
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