2023, May 27: Morning Planets, Jupiter, Saturn, Evening Planets, Venus, Mars

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May 27, 2023: Jupiter and Saturn are visible before daybreak.  Venus, Mars, and the gibbous moon are visible after nightfall.

Photo Caption – 2022, January 29: Venus, Mars, and the crescent moon in the southeast before sunrise.

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by Jeffrey L. Hunt

Chicago, Illinois:  Sunrise, 5:21 a.m. CDT; Sunset, 8:15 p.m. CDT.  Check local sources for sunrise and sunset times for your location.  Times are calculated by the U.S. Naval Observatory’s MICA computer program.

The change of daylight’s length has slowed to one to two minutes each day.  The length is six minutes short of fifteen hours.

Summaries of Current Sky Events

SUMMARY FOR VENUS AS AN EVENING STAR

Here is today’s planet forecast:

Morning Sky

Chart Caption – 2023, May 27: Saturn and the star Fomalhaut are in the southeast during morning twilight.

Two bright planets, Jupiter and Saturn, are visible during morning twilight in the eastern sky.  Saturn is easier to locate, over 25° above the southeast horizon.  While not as bright as Venus or Jupiter, it is among the brightest stars in the sky this morning.

Saturn is nearly 20° to the upper left of Fomalhaut, that is over 6° above the horizon.

Chart Caption – 2023, May 27: Jupiter and the star Capella are in the eastern sky before sunrise.

At this hour, bright Jupiter is over 5° above the eastern horizon.  It continues to emerge from brighter twilight into a darker sky.  It is over 12° to the lower right of Hamal, meaning “the full-grown lamb,” Aries’ brightest star.

Capella is farther northward along the horizon, over 4° up in the north-northeast.  At times, this star appears both after sunset in the west and in the eastern predawn sky.  This occurs because the star is far enough north to be seen at both times during late spring. 

Capella is the fourth brightest star in the sky this morning after Jupiter, Arcturus, and Vega.  It is nearly 20° to the lower left of Mirfak, meaning “the elbow of the Pleiades,” in Perseus.

Chart Caption – 2023, May 27: Jupiter and Mercury are in the eastern sky as sunrise nears.

Mercury is beginning to appear low in the east-northeast during brighter twilight.  Rising nearly and hour before sunrise, it is only 4° above the horizon and over 9° to the lower left of Jupiter.  The gap between them is too large for both to fit into the same binocular field of view.  Because of the level of twilight and that Mercury is not bright, the binocular’s optical assist is needed to see it.

The moon reaches its First Quarter phase at 10:22 a.m. CDT.  It does not until early afternoon.

Evening Sky

Chart Caption – 2023, May 27: The moon is near Leo’s Regulus and Denebola.

At an hour after sundown, the slightly gibbous moon, 54% illuminated, is over halfway up in the southwest.  It is over 10° to the upper left of Regulus, Leo’s brightest star, and nearly 15° to the lower right of Denebola, the Lion’s tail.

Chart Caption – Venus moves in front of Gemini, May 7-June 2, 2023.

Farther westward at this hour, brilliant Venus blazes from in front of Gemini’s stars.  It can be simply described as “that bright star in the west” after sunset.  The planet is stepping eastward, 4.3° to the lower left of Pollux, one of the Twins, and 12.6° to the lower right of dimmer Mars.

Chart Caption – 2023, May 27: Venus and Mars are with bright stars in the western sky after nightfall.

Venus is quickly overtaking Mars in the sky, noticeably cutting the distance each night. On its way toward Mars, Venus passes Pollux in a wide conjunction in two evenings.

The Red Planet is marching eastward in front of Cancer’s dim stars, 11.9° to the upper left of Pollux.  Mars is dimmer from week to week, now about the same brightness as Castor, the other Twin.

Notice the brighter stars nearby.  Procyon and Capella are in the same region as the planets and Gemini.  Capella, meaning “the little she goat,” is less than 20° above the northwest horizon at this hour.  It sets in the north-northwest after midnight and rises in the north-northeast before sunrise, a later setter and earlier riser compared to the sun.

Chart Caption – 2023, May 27: Through a binocular, Mars and the Beehive star cluster are visible in the same field of view.

Look toward Mars with a binocular when the sky is darker. Place the planet to the lower right portion of the field of view.  The Beehive star cluster is visible to the upper left along with the two donkey stars, Asellus Borealis and Asellus Australis.  The cluster is also known as the Praesepe, meaning manger.

Watch Mars’ nightly change compared to the star cluster.  On the evening of June 2nd, the planet appears to be in the cluster.

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