The comet C/2017 O1 (ASASSN)
From Ashburn , C/2017 O1 (ASASSN) is visible in the morning sky, becoming accessible around 00:18, when it rises to an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 05:08, 64° above your southern horizon. It will be lost to dawn twilight around 06:18, 60° above your south-western horizon.
Name C/2017 O1 (ASASSN)
Object Type Comet
|Magnitude:||20.60 (V) |
|Absolute mag (H):||8.10 |
|Slope parameter (n):||3.44 |
|Right ascension:||13h06m |
66.81 lightmin 
|Semi-major axis:||361.92 AU|
|Longitude ascending node:||25.79°|
|Argument of perihelion:||20.87°|
|Epoch of elements:||23 January 2020|
|Mean Anomaly at epoch:||0.12°|
|Orbital period:||6885.12 years|
Where possible, the brightnesses of comets are estimated from absolute magnitude values computed by the BAA Comet Section, based on the observations they receive. We prefer these to the Minor Planet Center's own magnitude estimates, since the latter are less often updated. Nonetheless, comets are intrinsically unpredictable objects, and magnitude estimates must always be taken with a pinch of salt.