Tag: Jupiter

2020: The Evening Sky

2020 Setting Sky in west

This chart shows the summary of the setting of the naked-eye planets, moon, and bright stars near the ecliptic, the plane of the solar system, for 2020. The chart shows the setting of these celestial bodies compared to sunset for time intervals up to five hours after the sun’s disappearance. The three phases of twilight are displayed as well. On this chart, activity occurs in the western sky, except for the rising curves (circles) of Jupiter, Saturn and Mars. When they rise in the east at sunset, they are at opposition.

As 2020 opens, Venus is the bright Evening Star, appearing in the southwest. Mercury makes its best evening appearance, setting at the end of evening twilight during early February. Mercury’s June elongation is larger, but it sets several minutes before the end of twilight, making it difficult to observe in the brighter sky. After Venus moves past the Pleiades and Aldebaran, it moves toward Elnath (β Tauri), and then plunges toward its inferior conjunction. Jupiter and Saturn pass opposition during July. After Venus disappears from the evening sky, the slow procession of bright stars – Pollux, Regulus, Spica, and Antares – disappears into evening twilight. Jupiter and Saturn appear on the setting chart in late October, just after Mars reaches opposition. The moon has two interesting appearances with the planetary duo on November 19, 2020 and just days before the Jupiter- Saturn Great Conjunction on December 21, 2020.

The chart is calculated from data by the U.S. Naval Observatory, for Chicago, Illinois.

Key to symbols: White square, conjunction; yellow triangle, greatest elongation (GE); yellow diamond, greatest brightness (GB).

 

2020: The Morning Sky

2020 Rising Chart

This chart shows the summary of the rising of the naked-eye planets, moon, and bright stars near the ecliptic, the plane of the solar system, for 2020. The chart shows the rising of these celestial bodies compared to sunrise for time intervals up to five hours before the sun’s appearance. The three phases of twilight are displayed as well. On this chart, activity occurs in the eastern sky, except for the setting curves (circles) of Jupiter, Saturn and Mars. When they set in the west at sunrise, they are at opposition.

Early in the year, the morning sky offers the three Bright Outer Planets – Jupiter, Saturn, and Mars – in the eastern predawn sky. As Mars moves eastward it passes Antares, Jupiter and Saturn. On several mornings, the moon passes the planetary trio. The highlight occurs on the morning of February 18 as the moon occults Mars as sunrise approaches in the Central U.S. Venus enters the morning sky at mid-year. The appearance of a lunar crescent with the brilliant planet is a beautiful sight. The moon appears with Mercury as the planet enters the morning sky in late July. On the morning of July 19, the moon and the five naked eye planets are in the sky. As the moon moves toward its evening appearance, Mercury appears higher in the sky, making it a little easier to see. Venus reaches its period of greatest brightness; the mid-brightness date is marked by the yellow diamond. Venus moves past Aldebaran, Pollux, Regulus, and Spica as it moves towards its superior conjunction in early 2021. Mercury’s best morning appearance occurs during November. While this is its smallest morning elongation, the angle of the ecliptic places it higher in the sky.

The chart is calculated from data by the U.S. Naval Observatory, for Chicago, Illinois.

Key to symbols: White square, conjunction; yellow triangle, greatest elongation (GE); yellow diamond, greatest brightness (GB).

2020, January: Jupiter, Saturn, and Mars in the Morning, In Advance of the Great Conjunction

During January 2020, Mars is joined by Jupiter in the morning. Saturn is at its solar conjunction and invisible to us because of the sun’s glare.

Click here for our article about the 2020 Great Conjunction of Jupiter and Saturn.

Jupiter and Saturn are in the same region of the sky. Jupiter is among the brightest “stars” in the night sky while Saturn is dimmer.  Mars varies in its brightness.  When near Earth later this year, it outshines Jupiter, but during January it is dimmer in the eastern sky, and easily overlooked.

Jupiter makes its first morning appearance late in the month, joining Mars as morning planets. Saturn passes its solar conjunction near mid-month and slowly crawls into the morning sky.

  • January 5: Mars is less than one-third of the way up in the sky about one hour before sunrise.  The planet is not very bright compared to our expectations.  It is near the stars of Scorpius.  This morning it is to the upper right of the star Graffias.  Compare Mars’ brightness and color to Antares, sometimes known as the “Rival of Mars.”  During the next several mornings, watch Mars move past Graffias and far above Antares.
  • January 7: Jupiter is beginning to move into the morning sky, but it rises only about 30 minutes before sunrise.  Look for it later in the month.
  • January 13: Saturn is at its solar conjunction.  It is hidden in the sun’s glare.  We won’t see it for several weeks.

  • January 20: This morning, the old moon is above Mars. Notice how far Mars has moved during the past several mornings.  During bright twilight, about 30 minutes before sunrise, Jupiter is just above the southeast horizon.  You’ll need a binocular to see it, as well as the crescent moon and Mars.
  • January 22: Forty-five minutes before sunrise, Jupiter is about 4° up in the southeast. The crescent moon (27.2d, 6%) is 7° to the upper right of Jupiter.
  • January 24: Saturn rises during bright twilight and its very difficult to see.

  • January 28: About 45 minutes before sunrise, Jupiter is low in the southeast.  Use a binocular to locate Mars with Antares to its right.

Next Month, Saturn becomes visible as Jupiter and Saturn head toward their once-in-a-generation Great Conjunction on December 21, 2020.

2019, December 3: Evening Star Venus, Jupiter, and Saturn

The image above shows Brilliant Evening Star Venus, Jupiter and Saturn about an hour after sunset. Venus is nearly midway between Jupiter and Saturn, but they are not along the same arc in the sky: Venus – Saturn, 8.6°; Venus – Jupiter, 9.7°.   Watch Venus continue to close in and pass Saturn on December 10.  (See the link below.)

Jupiter is becoming more difficult to observe at this time interval after sunset. This evening, it is less than 5° in altitude.

Read more about Venus as an Evening Star at these links:

2019, November 25, 2019: Evening Star Venus and Jupiter

 

One night past their conjunction, Venus appears to the left of Jupiter this evening about 45 minutes after sunset.  Venus continues to move away from Jupiter and toward Saturn.  Venus passes the Ringed Wonder on December 10.  Meanwhile, look for the crescent moon and Venus on November 28, Thanksgiving evening in the U.S.  See the links below for more details.

Read more about Venus as an Evening Star at these links:

2019, November 23, One Day Before Venus-Jupiter Conjunction

One day before their conjunction, Venus and Jupiter shine from the southwest this evening about 45 minutes after sunset. (Notice the reflections of the two planets in the water.)  This evening the space between them is 1.5°.  Venus appears to the lower left of Jupiter.  Tomorrow evening, November 24, the planets appear closest (conjunction). On this evening they are 1.4° apart.  Venus appears to the lower left of Jupiter.

Read more about Venus as an Evening Star at these links:

2019, November 22: Venus-Jupiter This Evening, 2 Days Before Conjunction

Venus approaches Jupiter this evening, two evenings before their conjunction.  The planets are low in the sky about 45 minutes after sunset.  This evening the two planets are is 2.1° apart.  Tomorrow evening the gap between the planets is 1.5°.  Venus appears to the lower left of Jupiter.  Sunday evening, November 24, the planets appear closest (conjunction). On this evening they are 1.4° apart.  Venus is to the lower left of Jupiter.

Read more about Venus as an Evening Star at these links: