The comet 103P/Hartley
From Ashburn (click to change), 103P/Hartley is visible between 22:59 and 04:35. It will become accessible at around 22:59, when it rises 24° above your south-eastern horizon, and then reach its highest point in the sky at 01:49, 37° above your southern horizon. It will become inaccessible at around 04:35 when it sinks to 25° above your south-western horizon.
Object Type Comet
|Brightness (V):||Mag 20.1|
|Semi-major axis:||3.48 AU|
|Longitude ascending node:||219.72°|
|Argument of perihelion:||181.31°|
|Epoch of elements:||11 February 2018|
|Mean Anomaly at epoch:||45.22°|
|Orbital period:||6.48 years|
The MPC'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 are available, however, and consequently the magnitude estimates shown here may be unreliable.