All night twilight has arrived in Northumberland and the waxing moon is growing brighter each evening. All of that as PANSTARRs continues to recede from both Earth and Sun. It means that this is probably one of the last pictures I'll take of this icy visitor in our sky.
Although the comet is fading and activity dying down it remains an interesting sight. There are two tails emerging from the nucleus - a curved dust tail to the north and a narrow antitail to the southeast.
At the time of the photo Comet 2011 L4 PANSTARRs was 1.67AU (250 million km) from Earth and 1.57AU (234 million km) from the Sun. It was shining at about magnitude +8.4 in the constellation Cepheus.
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Dr Adrian Jannetta. Amateur astronomer, maths teacher and science enthusiast.