Astronomy Picture of the Day · January 11, 1999

Perihelion Sun

The Astronomy Picture of the Day for January 11, 1999 is “Perihelion Sun,” an image. It is credited to Credit: ISAS, Yohkoh Project, SXT Group. The original explanation runs about 126 words.

From the explanation

“The Earth’s orbit is not a perfect, sun-centered circle. At aphelion , the most distant point in Earth’s orbit , the Sun is 150 million kilometers away and at perihelion , the closest point, Earth approaches the Sun to within about 147 million kilometers.”

— APOD editors, January 11, 1999

Read the full explanation on science.nasa.gov

At a glance

Date: January 11, 1999
Type: Image
Credit: Credit: ISAS, Yohkoh Project, SXT Group
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 126 words

All of January 1999 → · 1999 by month → · Full archive since 1995 →

Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: January 11 in other years

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Source

Astronomy Picture of the Day, January 11, 1999 — science.nasa.gov/image-article/apod-1999-january-11-perihelion-sun

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.