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Table 2

Observational circumstances of 2023 DZ2.

Obs. type Date Obs. (UTC) mV α (°) Δ (au) r (au)
Phot. 2023 03 20.9143 18.0 60.5 0.021 1.006
2023 03 21.9284 17.5 60.9 0.017 1.004
2023 03 22.9467 16.8 60.8 0.013 1.003
Colo. 2023 03 22.8725 17.0 60.7 0.013 1.003
Spec. 2023 03 17.8739 19.0 57.9 0.034 1.013
2023 03 20.9161 18.0 60.5 0.021 1.006

Notes. Observation type includes time-series photometry (Phot.), colour photometry (Colo.), and visible spectra (Spec.). The UTC time corresponding to the start of the observations, the predicted apparent V magnitude (mV), the phase angle (α), and the geocentric(Δ) and heliocentric (r) distances are shown (obtained using the MPC ephemeris service accessed on 30 March 2023).

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