3I/ATLAS (Record n° 30530)
NASA/JPL elements
IAU/MPC elements
On 2025 Nov 26 06h00 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 10.6 Aperture radius used for m1 1.3 ' Nuclear magnitude (m2) 12.9 Aperture radius used for m2 6 " Coma diameter 2 ' Coma condensation degree
(DC) 5 Afrho 1983 cm Afrho error 98 cm r (dist/Sun) 1.687 AU d (dist/Earth) 1.970 AU Instrumental configuration Config1 Instrument Dobson T407mm Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Instrument focale/diameter 4.29 Filter(s) None Camera Sony alpha7s Sensor DC Sensor size 36x24 mm2 Sensor pixels number 4240x2832 Sensor temperature 4 °C Binning 2x2 Mount Dobson Motorization No Autoguide No Exposure total time 30.5 s Exposure details 67x1/4+55x1/4s Sky transparency (naked eye max mag) 4 Seeing 3 Moon phase 55 ° Moon elongation 180 ° Air mass 1.6 Location Versailles Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing binning, flat, alignement, retrait gradient, alignement comète... Remarks or comments entre nuages et lever du jour Observation submission date 2025 Nov 29 19h23m33s Observation modification date 2026 Jan 24 17h40m46s