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C/2025 A6 (Lemmon)

Orbital period : 1351.00 years

NASA/JPL elements
IAU/MPC elements


On 2025 Oct 27 18h05 UT by Eric Tessier


(Copyright Eric Tessier)

Coma Total magnitude (m1)4.34
Aperture radius used for m12.9 '
Nuclear magnitude (m2)8.8
Aperture radius used for m26.7 "
Coma diameter6 '
Coma condensation degree (DC)7
Tail length0.33 °
Tail position angle (PA)37 °
Afrho5900 cm
Afrho error800 cm
r (dist/Sun)0.597 AU
d (dist/Earth)0.670 AU
Right ascension15 49 11.384 h m s
Declination+12 35 43.58 ° ' "
Instrumental configurationConfig2
InstrumentCANON 6D + 100mm EF 1000ISO
Instrument typeCamera lens
Instrument focale length100 mm
Filter(s)L
CameraCANON 6D
SensorDC
Binning1x1
MotorizationYes
Exposure total time16 s
Exposure details4*4s
LocationVINCENNES
Resulting picture sampling (scale)13.4 "/pix
Image processingDeepskystacker+IRIS
Remarks or commentsphotometrie sur HD140438 V=R=6.5 1250ISO+F/D=4
Observation submission date2025 Oct 28 10h51m23s
Observation modification date2025 Oct 29 09h08m26s

(Record n° 30236)

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