Jupiter's 11.9-year orbit around the Sun will carry it to its closest point to the Sun – its perihelion – at a distance of 4.95 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 perihelion it will be visible in the morning sky, becoming accessible around 20:11, when it reaches an altitude of 7° above your eastern horizon. It will then reach its highest point in the sky at 01:46, 61° above your southern horizon. It will be lost to dawn twilight around 06:27, 19° above your western horizon.
A chart of the path of Jupiter across the sky in 1963 can be found here, and a chart of its rising and setting times here.
The position of Jupiter at the moment it passes perihelion will be:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| Jupiter | 01h04m20s | 5°06'N | Pisces | -2.9 | 48.5" |
The coordinates above are given in J2000.0.
The sky on 18 May 2026
| The sky on 18 May 2026 | ||||||||||||||||||||||||||||||||||
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9% 2 days old |
All times shown in PDT.
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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
| 09 Aug 1963 | – Jupiter enters retrograde motion |
| 08 Oct 1963 | – Jupiter at opposition |
| 05 Dec 1963 | – Jupiter ends retrograde motion |
| 14 Sep 1964 | – Jupiter enters retrograde motion |
Image credit
© NASA/Cassini