The comet 289P/Blanpain
From Ashburn , 289P/Blanpain is visible in the dawn sky, rising at 23:27 (EDT) – 6 hours and 36 minutes before the Sun – and reaching an altitude of 39° above the southern horizon before fading from view as dawn breaks around 04:46.
Object Type Comet
|Right Ascension:||23h44m |
11.03 lightmin 
|Absolute Mag (V):||44.84|
|Semi-major axis:||3.05 AU|
|Longitude ascending node:||68.93°|
|Argument of perihelion:||9.84°|
|Epoch of elements:||14 May 2019|
|Mean Anomaly at epoch:||319.02°|
|Orbital period:||5.31 years|
The Minor Planet Center's magnitude estimates are updated rather rarely, and so we prefer to estimate the brightness of comets on the basis of amateur observations. No amateur observations of 289P/Blanpain are available, however, and consequently the magnitude estimates shown here may be unreliable.