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3I/ATLAS


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 m10.2 '
Nuclear magnitude (m2)16.1
Aperture radius used for m26.8 "
Coma diameter0.2 '
r (dist/Sun) 2.979 AU
d (dist/Earth) 2.647 AU
Right ascension16 05 32.24 h m s
Declination-16 01 46.4 ° ' "
InstrumentSW ED120
Instrument typeRefractor
Instrument aperture (0=naked eye)120 mm
Instrument focale length638 mm
Instrument focale/diameter5.31
Filter(s)None
CameraATIK 314L+
SensorCCD
Sensor temperature-10 °C
MountSphinx
Exposure details36x20s
Moon phase90 °
Air mass3.7
LocationYonne (89)
Used softwaresIRIS
Resulting picture sampling (scale)1.7 "/pix
Image processingIRIS
Remarks or commentsbasé sur mag G=15.57 de l'étoile 6250726494427511000 du GAII DR3
Observation submission date2025 Aug 19 10h43m45s
Observation modification date2025 Aug 20 11h35m28s

(Record n° 29925)

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