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3I/ATLAS


NASA/JPL elements
IAU/MPC elements


On 2025 Aug 16 20h47 UT by Eric Tessier


(Copyright Eric Tessier)

Coma Total magnitude (m1)15.9
Aperture radius used for m10.2 '
Nuclear magnitude (m2)16.2
Aperture radius used for m26.8 "
Coma diameter0.2 '
r (dist/Sun) 3.010 AU
d (dist/Earth) 2.654 AU
Right ascension16 08 13.51 h m s
Declination+16 07 55.3 ° ' "
InstrumentSW ED120
Instrument typeRefractor
Instrument aperture (0=naked eye)120 mm
Instrument focale length765 mm
Instrument focale/diameter6.37
Filter(s)None
CameraATIK 314L+
SensorCCD
Sensor temperature-10 °C
Binning1x1
MountSphinx
MotorizationYes
AutoguideNo
Exposure details24x30s
Sky transparency (naked eye max mag)6
Seeing2
Moon phase90 °
Air mass3.3
LocationYonne (89)
Reference stars catalogGaia DR1
Used softwaresIRIS
Resulting picture sampling (scale)1.7 "/pix
Remarks or commentsphotométrie basée sur Gmag=15.57 de la source DR3 : 6250542979061043000
Observation submission date2025 Aug 17 16h37m22s
Observation modification date2025 Aug 19 15h24m20s

(Record n° 29921)

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