2024, April 7: Mars Approaches Saturn

2022, April 5: Mars passes Saturn. Venus is nearby.
Photo Caption – 2022, April 5: Mars passes Saturn. Venus is nearby.

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by Jeffrey L. Hunt

Chicago, Illinois: Sunrise, 6:23 a.m. CDT; Sunset, 7:23 p.m. CDT.  Check local sources for sunrise and sunset times. Times are calculated by the US Naval Observatory’s MICA computer program.

Partial Solar Eclipse 2012
Photo Caption – 2012, May 20: Partial solar eclipse.

At Chicago’s latitude, daylight lasts 13 hours today.  Daylight increased an hour in 22 days.  The 14-hour mark occurs in another 22 days.

In Chicago for tomorrow’s solar eclipse, the partial eclipse begins at 12:51 p.m. CDT.  The sun is 94% covered at 2:07 p.m.  The event ends at 3:21 p.m.

Summaries of Current Sky Events
Summary for Venus as a Morning Star, 2023-24

Here is today’s planet forecast:

Morning Sky

Mars Approaches Saturn

Mars approaches Saturn
Chart Caption – 2024, April 7: Mars approaches Saturn in the eastern morning sky before sunrise.

Three bright planets – Venus, Mars, and Saturn – are in eastern morning twilight.  The easiest planet to see this morning is Mars, although a binocular is needed.  The planet is 5.0° above the east-southeast horizon at 45 minutes before sunrise.  It is dimmer than might be expected and somewhat matches the colorful reds of morning twilight.

Mars approaches Saturn
Chart Caption – 2024, April 7: Mars and Saturn are visible through a binocular during morning twilight.

The Red Planet is overtaking Saturn, 2.3° to the lower left and easily in the same binocular field.  Mars appears to pass the Ringed Wonder in three mornings.

Venus, rising only 26 minutes before the sun, is lost in the sun’s bright light.  It passes behind the sun during early June and then a wide swing into the evening sky.

Evening Sky

Bright Jupiter in West

Mercury, setting 39 minutes after the sun, is not visible tonight.  It rapidly overtakes our planet, passing between Earth and Sun on the 11th.  The planet then moves into the eastern morning sky for an unfavorable appearance.

2024, April 7: Bright Jupiter is in the west after nightfall below the Pleiades star cluster.
Chart Caption – 2024, April 7: Bright Jupiter is in the west after nightfall below the Pleiades star cluster.

Jupiter is the bright star in the western sky as darkness falls.  By an hour after sundown, it is over 15° above the western horizon.  It treks eastward in front of Aries, over 12° below the Pleiades star cluster, part of Taurus. The Jovian Giant reaches the cluster when they are near the sun in several weeks.

Jupiter and Uranus

2024, April 7: Jupiter and Uranus are in the same binocular field of view.
Chart Caption – 2024, April 7: Jupiter and Uranus are in the same binocular field of view.

Jupiter and Uranus are in the same binocular field.  The Jovian Giant overtakes the more-distant world on the 20th, but they are near the horizon on conjunction evening.

This evening, inspect the region around Jupiter with a binocular.  Count the number of stars in the Pleiades cluster.  Spot the “V” of Taurus that includes bright Aldebaran with the Hyades cluster.

Before looking for Uranus, place Jupiter at the center of the binocular field to find up to four of Jupiter’s largest moons, resembling stars that hug the planet.  Then move the bright planet toward the bottom of the field, about halfway from the center to the six o’clock position in the circular field. Uranus is near the center.

To identify Uranus, locate brighter Delta Arietis (δ Ari on the chart) and Zeta Arietis (ζ Ari) to the upper right in the field.  Dimmer stars 53 and 54 are to the lower left of Delta. Notice the contrasting colors of the stars.  Zeta and 53 are blue-white, while Delta and 54 are rosy.  Aquamarine Uranus is to the upper left of the numbered stars and to Delta’s lower left.  The planet’s globe is visible through a telescope at high magnifications.

Jupiter sets 155 minutes after sundown, ending today’s planet display.

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