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C/2025 K4 (Siverd)


NASA/JPL elements
IAU/MPC elements


On 2025 Jun 19 22h47 UT by Jean-Louis Virlichie


(Copyright Jean-Louis Virlichie)

Nuclear magnitude (m2)17.7
m2 standard deviation0.2
Aperture radius used for m26.0 "
r (dist/Sun) 2.569 AU
d (dist/Earth) 1.744 AU
Right ascension15 44 32.00 h m s
Declination-62 27 51.3 ° ' "
MPC report
COD X03
CON J. L. Virlichie [jl.virlichie@gmail.com]
OBS J. L. Virlichie, P. Traverse, H. Roy
MEA J. L. Virlichie
TEL 0.36-m f/4.8 reflector + CMO
NUM 3
ACK MPCReport file updated 2025.06.20 15:21:29
NET Gaia EDR3
AC2 jl.virlichie@gmail.com
    CK25K040 KB2025 06 19.94908 15 44 32.00 -62 27 51.3          17.8 G      X03
    CK25K040 KB2025 06 19.96135 15 44 32.12 -62 27 36.1          17.5 G      X03
    CK25K040 KB2025 06 19.97288 15 44 32.09 -62 27 21.4          17.9 G      X03
Instrumental configurationConfig1
InstrumentONTC 355
Instrument typeNewton
Instrument aperture (0=naked eye)360 mm
Instrument focale length1728 mm
Instrument focale/diameter4.8
Filter(s)L
CameraPlayer One IMX571 Mono
SensorCMOS
Sensor size23.5x15.7 mm2
Sensor pixels number6252x4176
Sensor temperature-10 °C
MountSW EQ8
AutoguideYes
Exposure details9x2mn
Observatory MPC codeX03
LocationPoroto Chili
Reference stars catalogGaia EDR3
Used softwaresTycho V12.1
Resulting picture sampling (scale)0.86 "/pix
Observation submission date2025 Jun 28 14h48m13s
Observation modification date2025 Jun 28 14h49m47s

(Record n° 29746)

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