Archive for May 11, 2022

05/11/2022 – Ephemeris – Let’s search for the naked-eye planets for this week

May 11, 2022 Comments off

This is Bob Moler with Ephemeris for Wednesday, May 11th. Today the Sun will be up for 14 hours and 40 minutes, setting at 8:59, and it will rise tomorrow at 6:18. The Moon, 3 days past first quarter, will set at 4:45 tomorrow morning.

Let’s search for the naked-eye planets for this week. The one bright planet in the evening sky, Mercury, is now too dim and close to the Sun to be seen, so the only planet action is in the morning sky where the other 4 naked-eye planets are. At 5:15 am tomorrow the planets will be spread out low from the east to southeast with brilliant Venus lowest and due east to Saturn almost exactly in the southeast. Venus may be missed at that time, but may be up sufficiently by 5:30. To the right of Venus is the quite bright Jupiter. Farther right will be the dimmest of the four, Mars. Farther to the right will be Saturn. All will be in A sloping to the upper right. They are still quite a sight to behold in the morning twilight.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT – 4 hours). They may be different for your location.


Annotated Binocular Moon

Animated annotated Binocular Moon for this evening, May 11, 2022. Created using Virtual Moon Atlas, GIMP and LibreOffice.


Mare Crisium – Sea of Crises
Mare Fecunditatis – Sea of Fertility
Mare Frigoris – Sea of Cold
Mare Imbrium – Sea of Showers
Mare Nectaris – Sea of Nectar
Mare Nubium – Sea of Clouds
Mare Serenitatis – Sea of Serenity
Mare Tranquillitatis – Sea of Tranquility
Mare Vaporum – Sea of Vapors
Sinus Iridium – Bay of Rainbows
Sinus Medii – Bay of the Center

Note that Mare is pronounced Mar-é

Morning planet parade

The morning planet parade is widening as Venus is moving away from Jupiter, and Mars is approaching Jupiter. These are shown at 5:15 am, or about an hour before sunrise tomorrow morning, May 12, 2022. Created using Stellarium.

Telescopic views of Venus, Saturn and Jupiter

Views of Venus, Jupiter, and Saturn (north up) as they would be seen in a small telescope, with the same magnification, tomorrow morning at 5:15 am, May 12, 2022. I do not show planets less than 10 seconds of arc in diameter. Apparent diameters: Venus 15.42″, 71.6% illuminated; Saturn 16.79″, its rings 39.12″; Jupiter 35.60″. Mars is not shown, its apparent diameter is 5.99″ and is 88.6% illuminated. The ” symbol means seconds of arc (1/3600th of a degree.) Created using Cartes du Ciel (Sky Charts).

Planets and the Moon on a single night

The naked-eye planets and the Moon at sunset and sunrise on a single night, starting with sunset on the right on May 11, 2022. The night ends on the left with sunrise on the 12th. Notice that all the naked-eye planets except Mercury are in the morning sky now. Click on the image to enlarge it. Created using my LookingUp program.