The comet C/2017 O1 (ASASSN)

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From Ashburn , C/2017 O1 (ASASSN) is visible in the dawn sky, rising at 23:44 (EST) – 7 hours and 37 minutes before the Sun – and reach an altitude of 68° above the south-eastern horizon before fading from view as dawn breaks at around 06:10.

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Name C/2017 O1 (ASASSN)
Object Type Comet
Current Position
Constellation:Coma Berenices
Magnitude:17.72 (V)[1]
Right Ascension:12h49m [1]
Declination:+23°36' [1]
Orbital Elements[1]
Semi-major axis:386.21 AU
Longitude ascending node:25.81°
Argument of perihelion:20.90°
Epoch of elements:16 December 2018
Mean Anomaly at epoch:0.06°
Derived quantities
Perihelion:1.50 AU
Aphelion:770.93 AU
Orbital period:7589.97 years
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Additional sources

Magnitudes estimates are derived from observations sent into the BAA Comet Section, as compiled by Jonathan Shanklin and last updated on 1 March 2018. We use these amateur observations in preference to the MPC's magnitude estimates, since they are updated much more often. Nonetheless, all comets are intrinsically unpredictable objects, and future magnitude estimates must always be taken with a pinch of salt.




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