C/2025 A6 (Lemmon) (Record n° 30919)
Orbital period : 1351.00 years
NASA/JPL elements
IAU/MPC elements
On 2025 Oct 24 18h33 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 4.3 Aperture radius used for m1 5 ' Nuclear magnitude (m2) 8.1 Aperture radius used for m2 6 " Coma diameter 9.2 ' Coma condensation degree
(DC) 6 Tail length 3 ° Tail position angle
(PA) 20 ° Afrho 7735 cm Afrho error 391 cm Instrumental configuration Config1 Instrument Dobson T407mm Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Instrument focale/diameter 4.29 Filter(s) None Camera Sony alpha7s Sensor DC Sensor size 36x24 mm2 Sensor pixels number 4240x2832 Sensor temperature 10 °C Binning 2x2 Mount Dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 26 s Exposure details 20x1/4+21x1 s Sky transparency (naked eye max mag) 6 Seeing 2 Moon phase 180 ° Moon elongation 90 ° Air mass 2 Location Blieux Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing bin flat alignement alignement comete somme retrait gradient Remarks or comments afrho couche R Observation submission date 2026 Jan 24 19h44m38s