3I/ATLAS (Record n° 29925)
NASA/JPL elements
IAU/MPC elements
On 2025 Aug 17 20h57 UT by Eric Tessier
(Copyright Eric Tessier)Coma Total magnitude (m1) 15.9 Aperture radius used for m1 0.2 ' Nuclear magnitude (m2) 16.1 Aperture radius used for m2 6.8 " Coma diameter 0.2 ' r (dist/Sun) 2.979 AU d (dist/Earth) 2.647 AU Right ascension 16 05 32.24 h m s Declination -16 01 46.4 ° ' " Instrument SW ED120 Instrument type Refractor Instrument aperture (0=naked eye) 120 mm Instrument focale length 638 mm Instrument focale/diameter 5.31 Filter(s) None Camera ATIK 314L+ Sensor CCD Sensor temperature -10 °C Mount Sphinx Exposure details 36x20s Moon phase 90 ° Air mass 3.7 Location Yonne (89) Used softwares IRIS Resulting picture sampling (scale) 1.7 "/pix Image processing IRIS Remarks or comments basé sur mag G=15.57 de l'étoile 6250726494427511000 du GAII DR3 Observation submission date 2025 Aug 19 10h43m45s Observation modification date 2025 Aug 20 11h35m28s