Table 1
Observational circumstances.
| Object | Date (UT) | r (AU) | Δ (AU) | α (°) | a (AU) | e | i (°) | q (AU) | Q (AU) | Spectral type |
|---|---|---|---|---|---|---|---|---|---|---|
| 10199 Chariklo | 2023-09-22 | 17.19 | 16.53 | 2.60 | 15.75 | 0.17 | 23.42 | 13.09 | 18.42 | bowl (a) |
| 44594 (1999 OX3) | 2024-01-07 | 17.60 | 17.18 | 2.96 | 32.69 | 0.46 | 2.62 | 17.60 | 47.78 | cliff (b) |
| 54598 Bienor | 2024-03-14 | 13.51 | 13.26 | 4.15 | 16.59 | 0.20 | 20.73 | 13.19 | 20.00 | Less red (c), water ice (d) |
| 469442 (2002 GG166) | 2023-09-12 | 15.76 | 15.69 | 3.69 | 34.27 | 0.59 | 7.71 | 14.11 | 54.43 | Less red (e) |
| 468861 (2013 LU28) | 2024-04-12 | 8.75 | 8.78 | 6.61 | 182.57 | 0.95 | 125.31 | 8.74 | 356.40 | bowl (b) |
| 2020 VF1 | 2024-03-31 | 8.43 | 8.44 | 6.84 | 24.76 | 0.66 | 53.43 | 8.39 | 41.12 | |
| 459865 (2013 XZ8) (*) | 2023-03-20 | 8.77 | 8.18 | 5.50 | 13.35 | 0.37 | 22.56 | 8.41 | 18.30 | Less red (c), Shallow (a) |
Notes. For each observation, we provide the epoch, the distance to the Sun (r) and JWST (Δ), and the phase angle (α). We also report the proper elements (semimajor axis a, eccentricity e, and inclination i) and the perihelion (q) and aphelion (Q) distances of each target. These were retrieved from JPL Horizon. (*) 2013 XZ8 is a GTO target (Hines et al. 2017). (a) J. Licandro & N. Pinilla-Alonso (personal communication), (b) Pinilla-Alonso et al. (2025), (c) Tegler et al. (2016), and (d) Guilbert et al. (2009), (e) Fraser et al. (2023).
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