The comet 217P/LINEAR

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From Ashburn (click to change), 217P/LINEAR is visible in the dawn sky, rising at 01:32 (EDT) – 5 hours and 26 minutes before the Sun – and reach an altitude of 48° above the south-eastern horizon before fading from view as dawn breaks at around 05:54.

Name 217P/LINEAR
Object Type Comet
Current Position
Constellation:Canis Minor
Brightness (V):Mag 12.8
Right Ascension:07h20m
Source for position: Computed using orbital elements from Minor Planet Centre
Orbital Elements
Semi-major axis:3.96 AU
Longitude ascending node:125.45°
Argument of perihelion:246.95°
Epoch of elements:03 September 2017
Mean Anomaly at epoch:6.19°
Derived quantities
Perihelion:1.24 AU
Aphelion:6.68 AU
Orbital period:7.87 years
Additional sources
Magnitudes estimates are derived from observations sent into the BAA Comet Section, as compiled by Jonathan Shanklin and last updated on 30 August 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.




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