The comet 217P/LINEAR
From Ashburn (click to change), 217P/LINEAR is visible between 18:47 and 04:27. It will become accessible at around 18:47, when it rises 24° above your eastern horizon, and then reach its highest point in the sky at 23:35, 68° above your southern horizon. It will become inaccessible at around 04:27 when it sinks to 25° above your western horizon.
Object Type Comet
|Brightness (V):||Mag 14.9|
|Semi-major axis:||3.96 AU|
|Longitude ascending node:||125.45°|
|Argument of perihelion:||246.95°|
|Epoch of elements:||17 January 2018|
|Mean Anomaly at epoch:||23.23°|
|Orbital period:||7.87 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 30 November 2017. 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.