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Table 1.

Physical constant and adopted parameters for the 6 June 2020 light curve fit and results.

Parameter Value
Pluto’s mass (GMp) 8.69 × 1011 m3 s−2
Surface radius (Rsurface) 1187 km
Pluto’s geocentric distance (D) 4.9889 × 109 km
Pluto pole position (J2000) αp = 08h52m12.94s,
N2 molecular refractivity (K) 1.091 × 10−23

Pressure at 1215 km (P1215) 6.72 ±  0.48 μbar
Pressure at the surface (Psurface) 12.36 ± 0.38 μbar
Closest approach to Pluto’s shadow center 605.3 ± 5 km
Time of closest approach to shadow center (UT) 19h4m1.58 ± 0.56s on 2020 June 06
(Pluto+Charon)/star flux ratio 0.313 ± 0.054

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