© Andy Roberts 1997. Pictured comet is C/1995 O1 Hale-Bopp.

C/2015 V2 (Johnson) reaches its brightest

Dominic Ford, Editor
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Comet C/2015 V2 (Johnson) is forecast to reach its brightest. It will lie at a distance of 1.65 AU from the Sun, and at a distance of 0.81 AU from the Earth.

From Cambridge, it will be visible in the evening sky, becoming accessible around 21:41 (EDT) as the dusk sky fades, 63° above your south-eastern horizon. It will then reach its highest point in the sky at 22:24, 64° above your southern horizon. It will continue to be observable until around 03:31, when it sinks below 22° above your western horizon.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

Based on the absolute magnitude published for this comet by the British Astronomical Association's Comet Section, we estimate that it may reach a peak brightness of around mag 8.

This comet is not expected to be visible to the naked eye, but might be visible through bird-watching binoculars. The brightnesses of comets are often highly unpredictable, since it is impossible to predict with certainty how they will respond as they are heated by the Sun as they move into the inner solar system. Magnitude estimates should be assumed to be highly provisional more than a few weeks in advance.

The path of the comet, on the other hand, can reliably be predicted. The chart below shows the path of C/2015 V2 (Johnson) over the course of its apparition. It was produced using StarCharter and is available for download, either on dark background, in PNG, PDF or SVG formats, or on a light background, in PNG, PDF or SVG formats.

Alternatively, you can create a textual listing of the comet's position using In-The-Sky.org's ephemeris generator.

The position of comet C/2015 V2 (Johnson) at its brightest will be:

Object Right Ascension Declination Constellation Magnitude
Comet C/2015 V2 (Johnson) 14h39m10s +17°22' Bootes 7.8

The coordinates are given in J2000.0.

The sky on 05 June 2017
Twilight ends
Twilight begins

11-day old moon
Waxing Gibbous


11 days old

Rise Culm. Set
Mercury 04:17 11:29 18:41
Venus 03:03 09:39 16:15
Moon 16:43 22:12 03:11
Mars 06:07 13:49 21:30
Jupiter 14:46 20:35 02:29
Saturn 20:46 01:27 06:04
All times shown in EDT.


This event was automatically generated on the basis of orbital elements published by the Minor Planet Center (MPC) , and is updated whenever new elements become available. It was last updated on 20 Aug 2019.

Image credit

© Andy Roberts 1997. Pictured comet is C/1995 O1 Hale-Bopp.




Color scheme