Mercury is at perihelion today, meaning that its at its closest point to the Sun. Meanwhile, closer to home, the Moon turns new; in the image above, you can see the positions of the inner planets and the Moon between the Earth and the Sun. (The sizes of the planets and the distance of the Moon from the Earth are not to scale and have been exaggerated for the purposes of illustration.)
Image courtesy of Mobile Observatory.
01:24 UT – New Moon. (Gemini, not visible.)
05:24 UT – Mercury appears 6’ south of Mars. (Mercury: 93% illuminated, magnitude -1.5, diameter 5.3”. Mars: 100% illuminated, magnitude 1.6, diameter 3.6”. Gemini, not visible.)
19:06 UT – Mercury is at perihelion. Distance to Sun: 0.308 AU (94% illuminated, magnitude -1.5, diameter 5.2”. Gemini, not visible.)
The globular cluster M55 culminates at midnight tonight. (Magnitude 7.4. Sagittarius, all night.)
Events in bold involve objects and/or events that are visible with the naked eye.
All times are in Universal Time (UTC). To convert the time to your timezone, click here.
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