Duck! Said Scorpius to Sagittarius

   Over the next several mornings, before the Sun rises, the Moon, as it wanes from gibbous to last quarter phase, glides past the stars of Scorpius the Scorpion and Sagittarius the Archer and the ringed planet Saturn.
   Apparently Archery is so loud that Sagittarius didn’t hear the warning and gets a face full of the Moon on the 21st.
   In the background is the Milky Way, but for the most part it will be difficult to see due to the bright reflected light from the Moon.
   Off to the west is Jupiter and Spica. Jupiter has been in retrograde motion since last month and is gradually moving west away from Spica.
   
   
   
   
   
   
   In the background is the Milky Way, but for the most part it will be difficult to see due to the bright reflected light from the Moon.

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Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

March Moon at Apogee

 Our Moon reaches apogee, (greatest distance from Earth), on Saturday March 18th. At that time the Moon will more or less be at a distance of 31.72 Earth diameters (404,640 km or 251,432 miles) from the Earth.
   Does our Moon actually go around the Earth as this graphic shows? From our perspective on the Earth the Moon appears to circle around the Earth. However, in reality, the Moon orbits the Sun together with the Earth*

*Click here to read my 2006 Scope on the Sky column “The Real Shape of the Moon’s Orbit”. (PDF)

Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   On the morning of the apogee Moon the 20-day old waning gibbous Moon rises a couple of hours before the Sun and is visible over the southern horizon.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to go to bobs-spaces.

Moon Near Jupiter and Spica


   Tuesday evening March 14th look for the waning gibbous Moon to be about 5-6o from the giant planet Jupiter and the blue-white star Spica. Both of which are within the constellation of Virgo the Harvest Maiden. The trio will make for an interesting view with binoculars.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

The Moon, Jupiter, and Spica – Together Again


   Wednesday February 15th the 18-day old waning gibbous Moon will be within a few degrees from the planet Jupiter and the blue-white star Spica in Virgo the Harvest Maiden as they rise in the east a few hours before sunrise local time.
   All three will fit within the field of view of a pair of 7×50 binoculars as this graphic shows.

   
   
   
   
   
   
   
   
   
   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Jupiter Goes Retro

   The giant outer planet Jupiter slows down and reverses its orbital motion on Monday February 6th as it begins its more or less annual retrograde motion. Retrograde motion is an apparent motion that occurs for an outer planet (past Earth’s orbit) when the faster moving Earth catches up with and then passes by the outer planet. During this retrograde motion Jupiter will move westward starting near the blue-white star Spica in Virgo the Harvest Maiden.

   Jupiter currently rises about around midnight local time and is very visible above the southwestern horizon sunrise.

   
   
   
   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Jupiter Closest to Spica – This Time Around

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   Thursday February 2nd the giant gas planet Jupiter will be its closest to the blue-white star Spica in Virgo the Harvest Maiden. The two will be separated by about 3o.

These two graphics show the sky as viewed from Quito Ecuador at 0o latitude, and my home latitude of approximately 40o North.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Moon Skips Past Stars and Planets

   Over the next several mornings, January 23rd to 25th the waning crescent Moon will pass by the star Antares, and the planets Saturn, and Mercury as these animated graphics are showing.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.