2021, April 28: Morning Moon in Pincers, Jupiter Saturn

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April 28, 2021: This morning the bright moon appears to be caught in the pincers of the Scorpion and near the creature’s forehead.  Bright morning planets Jupiter and Saturn are in the southeast before sunrise.

Chart Caption – 2021, April 28: The bright moon is caught in the Pincers of the Scorpion, Zubenelgenubi and Zubeneschamali, and near the forehead, Dschubba.

by Jeffrey L. Hunt

Chicago, Illinois:  Sunrise, 5:51 a.m. CDT; Sunset, 7:46 p.m. CDT.  Check local sources for sunrise and sunset times for your location.

Daylight is approaching 14 hours at this latitude.  Today it is 5 minutes short of that length.

This morning the bright moon is low in the southwest.  The moon is trapped within the pincers of the Scorpion, Zubenelgenubi and Zubeneschamali, and near Dschubba, “the forehead” of the Scorpion.  Antares, “the rival of Mars,” is to the lower left of the lunar orb.

Chart Caption – 2021, April 28: Bright morning planets, Jupiter and Saturn, are in the southeast before sunrise.

Farther eastward, bright Jupiter is over 16° up in the southeast.  It is the brightest “star” in the sky this morning.  With the bright moon, use a binocular to view Jupiter against the starry background.  The Jovian Giant is 4.5° to the left of Deneb Algiedi, “the kid’s tail” (δ Cap on the chart), 1.8° to the lower left of Mu Capricorni (μ Cap) and 1.7° to the upper right of Iota Aquarii (ι Aqr). 

Saturn is nearly 15° to the upper right of Jupiter.  The Ringed Wonder is slowly moving eastward compared to the stars.  Make observations each morning of the planet with a binocular to note that it is slowly moving toward Theta Capricorni (θ Cap).

Detailed Note: One hour before sunrise, the moon (16.3d, 98%) is nearly 18° up in the southwest.  The lunar orb is 7.2° to the right of Dschubba (“the forehead,” δ Sco, m = 2.3).  Farther eastward, Jupiter is over 16° above the southeast horizon.  In the starfield, it is 4.5° to the left of Deneb Algiedi, 1.8° to the lower left of μ Cap, and 1.7° to the upper right of ι Aqr.  Saturn is 14.9° to the upper right of Jupiter.  In the starfield, the Ringed Wonder is 1.1° to the upper right of θ Cap.  Twenty minutes after sunset, Venus is nearly 3.8° above the west-northwest horizon.  Mercury (m = −1.3) is 3.0° above Venus. Have you observed them without a binocular?  Mercury continues to dim as its nightly altitude increases.  An hour after sunset, Mars is less than 40° up in the west in front of the stars of Gemini.  It is 2.3° to the upper right of Propus and 3.1° to the lower right of Tejat Posterior.  Use a binocular to observe the star cluster M35, 1.3° below the Red Planet.  As midnight approaches, the moon (17.0d, 93%) – 13.0° up in the southeast – is 4.2° to the upper left of Antares (α Sco, m = 1.0).

Read more about the planets during April 2021.

2021, July 26: Evening Sky, Mars Closes In

July 26, 2021:  Four bright planets are in the evening sky.  Mars closes in on Regulus for their conjunction in three evenings.  Brilliant Evening Star Venus appears to the upper left of the impending Mars – Regulus conjunction.  Saturn and Jupiter are low in the southeastern sky after sunset.

2021, July 25: Evening Sky, Mars on Final Approach

July 25, 2021:  Four evenings before its conjunction with Regulus, find Mars in the western sky to the lower right of Venus.  As the calendar day ends, look for the moon below bright Jupiter.

2021, July 24: Four Evening Planets, Moon

July 24, 2021: After sunset, Venus and Mars are in the western sky.  A little later during evening hours, the moon is near Jupiter and Saturn in the southeast.

2021, July 29: Jupiter – Mars Opposition

July 29, 2021:  Jupiter and Mars are 180° apart along the ecliptic.  Dim Mars sets in the west-northwest as Jupiter rises in the east-southeast.  This event signals that soon both appear in the sky simultaneously.



Categories: Astronomy, Sky Watching

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