Observation by Nick James: C/2023 H2 (Lemmon)

Uploaded by

Nick James

Observer

Nick James

Observed

2023 Nov 11 - 18:10

Uploaded

2023 Nov 12 - 08:55

Objects

C/2023 H2 (Lemmon)

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Constellation

Aquila

Field centre

RA: 19^h02^m
Dec: +12°27'
Position angle: -0°12'

Field size

0°44' × 0°31'

Equipment

ASI6200MM + Celestron HD11

Exposure

52x10s

Location

Chelmsford, UK

Target name

C/2023 H2 (Lemmon)

Title

C/2023 H2 (Lemmon)

About this image

This comet is now just past its closest approach to Earth which occurred on November 10. It is only 0.19 au away and rushing across the sky through Hercules into Aquila at around half a degree an hour. It has a large diffuse coma and the total magnitude is now around 7 and it is well placed for us in the early evening sky. The comet has a thin ion tail which was in a PA of 70 deg last night although this is rotating rapidly due to the changing geometry. It also has a bright forward "jet" in the opposite direction to the tail. The comet is now moving rapidly southwards so it will become difficult to observe from the UK. It is also fading as it moved away from both the Sun and the Earth.

Files associated with this observation

2023h2_20231111_181003_ndj.jpg (2.1 MB)

Like this image

Duncan Hale-Sutton, Robin Leadbeater, Ron Johnson, Steve Williams, Peter Mulligan, Peter Carson

Comments

Robin Leadbeater, 2023 Nov 13 - 00:45 UTC

A low resolution spectrum taken at the same time

Robin

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