© NASA/Cassini

Jupiter at aphelion

Fri, 17 Feb 2017 at02:18 EST(95 days ago)
07:18 UTC

Dominic Ford, Editor
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The sky at

Jupiter's 11.9-year orbit around the Sun will carry it to its furthest point to the Sun – its aphelion – at a distance of 5.46 AU.

In practice, however, Jupiter's orbit is very close to circular; its distance from the Sun only varies by about 10.1% between perihelion and aphelion. This means that the difference in the amount of heat and light it receives from the Sun between aphelion and perihelion is extremely small.

Finding Jupiter

Jupiter's distance from the Sun doesn't affect its appearance. From Newark (click to change), at the moment of aphelion it will be visible in the morning sky, becoming accessible at around 22:38, when it rises 7° above your eastern horizon. It will then reach its highest point in the sky at 03:32, 41° above your southern horizon. It will be lost to dawn twilight at around 06:28, 27° above your south-western horizon.

A chart of the path of Jupiter across the sky in 2017 can be found here, and a chart of its rising and setting times here.

The position of Jupiter at the moment it passes aphelion will be:

Object Right Ascension Declination Constellation Magnitude Angular Size
Jupiter 13h26m10s -07°27' Virgo -2.3 40.0"

The coordinates above are given in J2000.0.

The sky on 17 February 2017
Sunrise 06:46
Sunset 17:32
Twilight ends
19:04
Twilight begins
05:15

20-day old moon
Age of Moon
20 days

All times shown in EST.
Rise Culm. Set
Mercury 06:22 11:20 16:18
Venus 08:01 14:30 21:00
Moon 23:31 04:56 10:20
Mars 08:37 15:00 21:23
Jupiter 21:51 03:32 09:09
Saturn 03:05 07:47 12:29

Source

The circumstances of this event were computed using the DE405 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.

Related news

26 Sep 2016, 03:05 EDTJupiter at solar conjunction
07 Apr 2017, 17:28 EDTJupiter at opposition
26 Oct 2017, 14:14 EDTJupiter at solar conjunction
09 May 2018, 20:28 EDTJupiter at opposition

Image credit

© NASA/Cassini

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