Postdiction of the Pluto’s occultation of 19 August 1985, using NIMAv8/PLU055 ephemerides. The shadow of Pluto at 17:59:54 (the mid-time of the occultation provided in Brosch 1995) is represented. The green bullet represents the WISE observatory. The red dashed lines represent the 1σ uncertainty on the path. Areas in dark grey correspond to full night (Sun elevation below −18°) and areas in light grey correspond to twilight (Sun elevation between −18° and 0°), while daytime regions are in white. The dark and light blue thinner lines are the shadow limits corresponding the stellar half-light level and 1% stellar drop level (the practical detection limit), respectively.