Changing Planet

5 Sky Events This Week: Winter Gems, Micro-Moon, Lion’s Heart

The famous Orion and Taurus constellations rise over the Mayall four-meter telescope on Kitt Peak in Arizona. This week the moon positions itself between the brightest stars of these iconic stellar patterns. Credit: J. Glaspey and NOAO/AURA/NSF

A silvery moon this week points sky-watchers to some of the brightest constellations of the season, offering glimpses of gemlike stars, lunar moments, and the possible last gasps of a faded comet.

Moon and winter gems. Late evening on Monday, January 13, look for a ring of winter’s brightest stars to surround the waxing gibbous moon. 

The bright yellow star above the moon is Capella (in the constellation Auriga), Aldebaran is in Taurus to its upper right, orange Betelgeuse is in Orion to the lower right, and Canis Minor’s Procyon hangs far below the moon. Rounding out these stellar gems, Jupiter and then Pollux (in the constellation, Gemini) lay to luna‘s immediate left.

The waxing gibbous moon parks between the brightest winter stars this week, making the stellar patterns much easier to learn.  Credit: A.Fazekas / Starry Night Software
The waxing gibbous moon parks between the brightest winter stars this week, making the stellar patterns much easier to find. Credit: A. Fazekas/Starry Night Software

Jupiter and moon. By the next evening, Tuesday, January 14, the moon will have glided even closer to brilliant Jupiter in the southeast skies. The cosmic pair will be quite eye-catching—separated by less than five degrees, about the same width as your three middle fingers held together at arm’s length. The Jovian planet is currently at its brightest and its closest distance to Earth for the year, and it appears as an “extra” star in the constellation Gemini.

Full apogee moon. On Wednesday, January 15, the moon reaches apogee, the farthest point it reaches in its orbit around Earth, some 252,607 miles (406,532 kilometers) away. This apogee will make it appear to be the smallest full moon of 2014—about four percent smaller than average—as it rises today in the east after sunset. The last time we had such a “micro-moon” was back in November 2012.

This Wednesday the moon reaches full phase and is the smallest of the year. It will appear about 14% smaller than a so-called super-moon, when the moon reaches its closest point to Earth in its orbit.  Credit: Galileo Project, NASA
This Wednesday the moon reaches full phase and is the smallest of the year. It will appear about 14 percent smaller than a so-called supermoon, when the moon reaches its closest point to Earth in its orbit. Credit: Galileo Project, NASA

Second-chance ISON shower. When comet ISON was approaching late last year, it passed within two million miles of Earth’s orbit. Now on January 15, the Earth orbits through the same spot where the comet passed, which may mean we might see some meteor activity from the former comet’s debris stream—if there is any left.

The predicted radiant, the point in the sky from which ISON’s particles might appear to fly out from, happens to lie within the constellation Leo, the Lion, which rises during the early evening hours in the northeast. Leo reaches its highest point in the southern sky near 2 a.m. local time. For where to look in the sky for possible meteors, check out these handy sky charts from the American Meteor Society.

Moon joins the Lion’s heart. On Saturday, January 18, look for the 78-light-years-distant Regulus, the lead star in the constellation Leo to brush past the moon. The two celestial objects will appear to pass within five degrees of each other. When looking up at Regulus tonight, it’s amazing to think that its starlight left on its journey in 1935, when radar was invented, the Moscow subway opened, and Mutiny on the Bounty starring Clark Gable won an Oscar for Best Picture.

Follow Andrew Fazekas, the Night Sky Guy, on Twitter and Facebook.

Andrew Fazekas, aka The Night Sky Guy, is a science writer, broadcaster, and lecturer who loves to share his passion for the wonders of the universe through all media. He is a regular contributor to National Geographic News and is the national cosmic correspondent for Canada’s Weather Network TV channel, space columnist for CBC Radio network, and a consultant for the Canadian Space Agency. As a member of the Royal Astronomical Society of Canada, Andrew has been observing the heavens from Montreal for over a quarter century and has never met a clear night sky he didn’t like.
  • Lynley

    Not so much in the Southern Hemisphere !!

  • Lynley

    Not so much in the Southern Hemisphere !!

  • Jorge Enrique Laurence

    realmente me resulta muy interesante la información que ustedes proporcionan a la humanidad, realmente absorto, por las cosas que muestran . “Gracias”

  • Jorge Enrique Laurence

    realmente me resulta muy interesante la información que ustedes proporcionan a la humanidad, realmente absorto, por las cosas que muestran . “Gracias”

  • NATHAN REEVES

    I think Pollux is in the constellation Gemini, not Castor! Oops!

  • NATHAN REEVES

    I think Pollux is in the constellation Gemini, not Castor! Oops!

  • Elsabe

    Will all this activity eg the meteor shower be visible in the southern Hemispere? And will South African be able to see it?

  • Elsabe

    Will all this activity eg the meteor shower be visible in the southern Hemispere? And will South African be able to see it?

  • Huehuehue

    Yesterday here in Philippines the moon is inside/surrounded by a shining ring, what kind of sky events do you think it is?

  • Huehuehue

    Yesterday here in Philippines the moon is inside/surrounded by a shining ring, what kind of sky events do you think it is?

  • Vishnu Shriram

    Both Castor and Pollux are part of the Gemini constellation

  • Vishnu Shriram

    Both Castor and Pollux are part of the Gemini constellation

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