The comet 185P/Petriew
From Ashburn (click to change), 185P/Petriew will become visible at around 18:51 (EST) as the dusk sky fades, 30° above your south-western horizon. It will then sink towards the horizon, setting 3 hours and 46 minutes after the Sun at 21:32.
Object Type Comet
|Brightness (V):||Mag 11.4|
|Semi-major axis:||3.10 AU|
|Longitude ascending node:||214.10°|
|Argument of perihelion:||181.92°|
|Epoch of elements:||11 February 2018|
|Mean Anomaly at epoch:||2.77°|
|Orbital period:||5.46 years|
|Light-on-dark||PNG image||PDF document|
|Dark-on-light||PNG image||PDF document|
Magnitudes estimates are derived from observations sent into the BAA Comet Section, as compiled by Jonathan Shanklin and last updated on 25 September 2012. 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.