The comet C/2018 Y1 (Iwamoto)
From Ashburn , C/2018 Y1 (Iwamoto) is visible in the dawn sky, rising at 01:10 (EDT) – 4 hours and 53 minutes before the Sun – and reaching an altitude of 31° above the north-eastern horizon before fading from view as dawn breaks around 04:46.
Name C/2018 Y1 (Iwamoto)
Object Type Comet
|Right Ascension:||04h45m |
26.70 lightmin 
|Absolute Mag (V):||43.96|
|Semi-major axis:||129.76 AU|
|Longitude ascending node:||147.48°|
|Argument of perihelion:||358.05°|
|Epoch of elements:||14 May 2019|
|Mean Anomaly at epoch:||0.06°|
|Orbital period:||1478.09 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.