3I/ATLAS (Record n° 29975)
Perihelion distance : 1.36 AU
Inclination to ecliptic : 175 °
Eccentricity : 6.14
NASA/JPL elements
IAU/MPC elements
On 2025 Aug 23 20h35 UT by Eric Tessier
(Copyright Eric Tessier)Coma Total magnitude (m1) 15.8 Aperture radius for m1 0.2 ' Magnitude (MPC m2) 16.1 Aperture radius for m2 6.8 " Coma diameter 0.2 ' r (dist/Sun) 2.791 AU d (dist/Earth) 2.611 AU Right ascension 237.46925 ° Declination -15.39407 ° Instrument SW ED120 Instrument aperture (0=naked eye) 120 mm Instrument focale length 765 mm Camera ATIK 314L+ Sensor CCD Sensor temperature -10 °C Mount Sphinx Motorization Yes Autoguide No Exposure details 41x20s Moon phase 180 ° Air mass 4 Location Yonne (89) Used softwares IRIS Resulting picture sampling (scale) 1.7 "/pix Remarks or comments Photométrie bande G déduite de l'étoile GAIA (DR3) 6263404997365844000
Astrométrie décalée de -2 arcsec en delta par rapport à MPC Observation submission date 2025 Aug 26 22h23m10s Observation modification date 2025 Aug 26 23h04m42s