Table 2
Circumstances of observation of centaur 2020 MK4.
| Date | Tel. | UT-range | X | rh | Δ | α | θ⊙ | θ−V | Filters |
|---|---|---|---|---|---|---|---|---|---|
| (h:m) | (AU) | (AU) | (°) | (°) | (°) | ||||
| July 16 | IAC80 | 01:04–02:19 | 1.80–1.85 | 6.228 | 5.220 | 1.3 | 322.5 | 255.3 | R |
| July 17 | JKT | 00:13–02:37 | 1.80–1.96 | 6.228 | 5.220 | 1.2 | 329.8 | 255.3 | r′ |
| July 23/24 | IAC80 | 23.01–00:54 | 1.80–2.15 | 6.229 | 5.223 | 1.4 | 23.2 | 255.7 | g′, r′, i′ |
Notes. Information includes the date, airmass (X), heliocentric (rh) and geocentric (Δ) distances, phase angle (α), position angle of the projected anti-Solar direction (θ⊙), and the position angle of the projected negative heliocentric velocity vector (θ−V). Orbital values have been taken from JPL’s HORIZONS system and they are the averages within the indicated UT-range.
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