Jupiter at aphelion

Dominic Ford, Editor
From the Outer Planets feed


Objects: Jupiter

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 10.2% 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 South El Monte, at the moment of aphelion it will be visible in the dawn sky, rising at 04:54 (PDT) – 1 hour and 13 minutes before the Sun – and reaching an altitude of 10° above the eastern horizon before fading from view as dawn breaks at around 05:51.

A chart of the path of Jupiter across the sky in 1957 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 13h04m50s 5°42'S Virgo -1.7 30.1"

The coordinates above are given in J2000.0.

The sky on 13 Aug 2025

The sky on 13 August 2025
Sunrise
06:09
Sunset
19:40
Twilight ends
21:12
Twilight begins
04:37


Waning Gibbous

70%

20 days old

Planets
Rise Culm. Set
Mercury 04:56 11:46 18:36
Venus 03:24 10:29 17:35
Moon 21:47 04:11 10:46
Mars 09:37 15:36 21:36
Jupiter 03:14 10:23 17:32
Saturn 21:32 03:30 09:27
All times shown in PDT.

Warning

Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.

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.

Related news

18 May 1957  –  Jupiter ends retrograde motion
15 Feb 1958  –  Jupiter enters retrograde motion
16 Apr 1958  –  Jupiter at opposition
18 Jun 1958  –  Jupiter ends retrograde motion

Image credit

© NASA/Cassini

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