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Mars in 1981: brightness, position and events

Brightest+1.0around Dec 15

Closest (in table)1.456 au218 million km

Farthest2.435 au

Events this year1

Brightest last year-1.2

Events this year

Date (JST)	Event	Mag	Dist (au)	Constellation	Elong.
1981-04-02 23:13	Conjunction with the Sun	+1.1	2.405	Pisces	0.6°

Magnitude through the year (lower = brighter)

Twice-monthly position and visibility

Date	Mag	Dist (au)	Constellation	Elong.	Visibility
Jan 1	+1.2	2.268	Capricornus	20° E	Evening sky
Jan 15	+1.2	2.293	Capricornus	17° E	Evening sky
Feb 1	+1.1	2.322	Capricornus	13° E	Too close to the Sun
Feb 15	+1.1	2.344	Aquarius	10° E	Too close to the Sun
Mar 1	+1.1	2.364	Aquarius	7° E	Too close to the Sun
Mar 15	+1.1	2.383	Pisces	4° E	Too close to the Sun
Apr 1	+1.1	2.404	Pisces	1° E	Too close to the Sun
Apr 15	+1.1	2.417	Pisces	3° W	Too close to the Sun
May 1	+1.2	2.429	Aries	6° W	Too close to the Sun
May 15	+1.3	2.435	Aries	10° W	Too close to the Sun
Jun 1	+1.4	2.435	Taurus	14° W	Too close to the Sun
Jun 15	+1.4	2.428	Taurus	17° W	Morning sky
Jul 1	+1.5	2.411	Taurus	21° W	Morning sky
Jul 15	+1.6	2.387	Taurus	25° W	Morning sky
Aug 1	+1.6	2.346	Gemini	30° W	Morning sky
Aug 15	+1.6	2.301	Gemini	34° W	Morning sky
Sep 1	+1.6	2.232	Cancer	39° W	Morning sky
Sep 15	+1.6	2.163	Cancer	44° W	Morning sky
Oct 1	+1.6	2.070	Leo	50° W	Morning sky
Oct 15	+1.5	1.976	Leo	55° W	Morning sky
Nov 1	+1.4	1.848	Leo	62° W	Morning sky
Nov 15	+1.3	1.732	Leo	68° W	Morning sky
Dec 1	+1.1	1.588	Leo	76° W	Morning sky
Dec 15	+1.0	1.456	Virgo	84° W	Morning sky

Computed with the JPL DE421 ephemeris and Skyfield (times in JST). Magnitude and distance are for 12:00 JST on each date. Visibility is a rough guide for mid-northern latitudes such as Japan.

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Mars is brightest around December 1981 (magnitude +1.0); 1 conjunctions, oppositions or elongations occur this year.