The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Close approach of Jupiter and Saturn

Dominic Ford, Editor
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The sky at

The planets Jupiter and Saturn will make a close approach, passing within a mere 6.0 arcminutes of each other.

From Ashburn, the pair will be visible in the dawn sky, rising at 04:32 (EDT) – 1 hour and 51 minutes before the Sun – and reaching an altitude of 14° above the south-eastern horizon before fading from view as dawn breaks around 06:03.

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Jupiter will be at mag -2.0; and Saturn will be at mag 0.6. Both objects will lie in the constellation Capricornus.

They will be close enough to fit within the field of view of a telescope, but will also be visible to the naked eye or through a pair of binoculars.

At around the same time, the pair will also share the same right ascension – called a conjunction.

A graph of the angular separation between Jupiter and Saturn around the time of closest approach is available here.

The positions of the pair at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
Jupiter 20h53m10s -17°57' Capricornus -2.0 33"3
Saturn 20h53m20s -18°03' Capricornus 0.6 15"5

The coordinates above are given in J2000.0. The pair will be at an angular separation of 43° from the Sun, which is in Pisces at this time of year.

The sky on 15 April 2021
Sunrise
06:32
Sunset
19:48
Twilight ends
21:24
Twilight begins
04:56

3-day old moon
Waxing Crescent

8%

3 days old

Planets
Rise Culm. Set
Mercury 06:27 12:53 19:19
Venus 06:49 13:27 20:05
Moon 08:28 15:53 23:24
Mars 09:41 17:12 00:44
Jupiter 04:10 09:28 14:46
Saturn 03:30 08:33 13:36
All times shown in EDT.

Source

The circumstances of this event were computed using the DE430 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

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Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

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Ashburn

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Longitude:
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39.04°N
77.49°W
EDT

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