March 3, 2021: Evening planet Mars is in Taurus and it nears a conjunction Alcyone, the brightest star in the Pleiades.
by Jeffrey L. Hunt
Chicago, Illinois: Sunrise, 6:22 a.m. CST; Sunset, 5:44 p.m. CST. Check local sources for sunrise and sunset times for your location.
In the evening sky, Mars is passing the Pleiades star cluster in Taurus. While this can be seen with the unaided eye, the best view is with a binocular. The field of view is demonstrated in the chart above. Mars is 2.6° to the lower left of Alcyone, the cluster’s brightest star.
Look for them high in the west-southwest starting about one hour after sunset. Mars and the surround stars set over 6 hours after sunset. There’s ample time to view them during the early evening, weather permitting.
Tomorrow evening is the Mars – Alcyone conjunction. The gap between them is slightly smaller.
As the day ends, find the gibbous moon very low in the east-southeastern sky.
Here’s more about Mars during 2021.
Read about Mars during March.
Detailed Note: One hour before sunrise, the moon (19.7d, 78%) is about a third of the way up in the south-southwestern sky. It is 6.7° to the upper right of Zubenelgenubi (α Lib, m = 2.8). Fifteen minutes later, Saturn is nearly 7° above the east-southeastern horizon. As the sky brightens further, use a binocular to see Jupiter nearly 5° in altitude in the east-southeast with Mercury 1.2° to the Giant Planet’s upper right. One hour after sunset, Mars (m = 1.0) is nearly two-thirds of the way up in the sky in the west-southwest, 2.6° to the lower left of Alcyone. When rounded this evening’s gap is the same as what is observed tomorrow evening when Mars passes the star. As midnight approaches, the moon (20.4d, 70%) is very low in the east-southeastern sky.
Read more about the planets during March 2021.
LATEST ARTICLES
- 2024, May 11: Sirius Heliacal SettingMay 11, 2024: Sirius makes its last appearance or heliacal setting at the mid-northern latitudes. Mars and Saturn are visible before sunrise, Moon after sundown.
- 2024, May 10: Mercury’s Poor Morning ViewMay 10, 2024: Mercury is difficult to see before sunrise, although Saturn and Mars are easier to locate. The crescent moon is in the west-northwest after sundown.
- 2024, May 9: May Evening EarthshineMay 9, 2024: Look for earthshine on the moon’s night portion this evening. Mars and Saturn are morning planets.
- 2024, May 8: Mars at Perihelion2024, May 8: Mars is at Perihelion today, its closest point to the sun. Find it before sunrise in the eastern sky.
- 2024, May 7: Mars and Saturn are Morning PlanetsMay 7, 2024: Shining from the eastern sky before sunrise, Mars and Saturn are morning planets. Look for stars Arcturus and Spica after sundown.