Indy’s Cold Supermoon: A Bright End to 2023

Indianapolis skygazers had a final treat for 2023 with the magnificent “Cold Supermoon” gracing our skies on December 26th. This celestial event marked not only the last full moon of the year but also the last supermoon, offering a slightly larger and brighter spectacle for those who looked up.

What Made it “Super”?

The term “supermoon” describes a full moon that occurs when the Moon is near its perigee—the point in its elliptical orbit where it is closest to Earth. While the actual difference in size isn’t always obvious to the naked eye, a supermoon can appear up to 14% larger and 30% brighter than the year’s dimmest full moon (an apogee full moon). For Indianapolis residents, this meant a particularly luminous disc shining down on our winter nights.

The concept of a “supermoon” was first coined by astrologer Richard Nolle in 1979, defining it as a new or full moon occurring when the Moon is within 90% of its closest approach to Earth in a given orbit. Astronomers prefer the term “perigean full moon,” but “supermoon” has certainly captured the public imagination and offers a simpler way to refer to this enhanced lunar display.

The “Cold Moon” Tradition and Its Hoosier Relevance

December’s full moon traditionally carries the name “Cold Moon,” a moniker deeply rooted in Native American traditions. This name reflects the time of year when winter truly takes hold, bringing with it the coldest temperatures and longer nights. For Indianapolis, a city familiar with frosty December evenings and often snow-dusted landscapes, the “Cold Moon” accurately reflects the season.

Historically, indigenous tribes named full moons to track the seasons and guide their activities. The Cold Moon signified the onset of harsh winter conditions, a time for preparing for long, dark, and frigid periods. While modern Indianapolis has central heating and insulated homes, the natural rhythm of the seasons remains, and the Cold Moon served as a beautiful reminder of winter’s grip and our connection to natural cycles.

Viewing from Indianapolis: A Clear Winter Night

Indianapolis residents who stepped outside on the evening of December 26th or the early morning of December 27th were likely rewarded with a clear view of the supermoon. Winter skies, often crisp and less hazy than summer nights, can offer excellent conditions for stargazing. While no special equipment was needed to appreciate the moon’s enhanced brilliance, many found it particularly striking just after moonrise or before moonset.

This “moon illusion,” where the moon appears larger when it’s closer to the horizon, is a fascinating optical phenomenon. The presence of trees, buildings, or the downtown Indianapolis skyline provides reference points that trick our brains into perceiving the moon as bigger. Whether viewed from a backyard in Carmel, a park in Broad Ripple, or against the backdrop of the city center, the Cold Supermoon provided a memorable sight for Hoosier sky-watchers.

Supermoon vs. Regular Full Moon Comparison

To better understand what made the December 26th supermoon special, here’s a quick comparison:

Looking Ahead: Indy’s Next Celestial Treats

While the December Cold Supermoon was the last of 2023, the celestial calendar for Indianapolis remains full of fascinating events. Stargazers should keep an eye out for upcoming meteor showers, planetary conjunctions, and the next series of supermoons or eclipses in 2024. The night sky is a constant source of wonder, and our location in Central Indiana often provides excellent viewing opportunities away from major light pollution areas if you venture just outside the city.

The first full moon of 2024, the “Wolf Moon,” is expected around late January, though it will not be a supermoon. Always check local astronomy club websites or reputable sources for precise dates and optimal viewing times for future events tailored to our Indianapolis coordinates. Joining a local stargazing group can also enhance your experience and provide insights into the best viewing spots.

FAQs About Supermoons and the Cold Moon

• What exactly is a Supermoon?
  A supermoon occurs when a full or new moon coincides with the Moon’s closest approach to Earth in its elliptical orbit (perigee). This makes the moon appear slightly larger and brighter than average to observers on Earth.
• Why is December’s full moon called the “Cold Moon”?
  The “Cold Moon” name comes from Native American traditions, reflecting the period when winter truly begins, bringing colder temperatures and longer nights, especially noticeable in regions like Indianapolis and across the Northern Hemisphere.
• Was the December 26th moon special for Indianapolis?
  Yes, for Indianapolis, it was a beautiful celestial display, offering a brighter and slightly larger full moon to cap off the year. Clear winter skies often provide great viewing conditions locally, enhancing the experience.
• Do I need special equipment to view a supermoon?
  No, supermoons are perfectly visible and enjoyable with the naked eye. While binoculars or a telescope can enhance the view of craters and surface details, they are not necessary to appreciate the moon’s enhanced brilliance and size.
• When is the next significant lunar event for Indy skywatchers?
  While the December Cold Supermoon was the last of its kind for 2023, the first full moon of 2024, the “Wolf Moon,” will appear in late January. Keep an eye on local astronomy calendars for dates of future supermoons or eclipses in our region throughout the coming year.

The magic of the night sky is always within reach. Keep looking up, Indianapolis, and embrace the wonders above, whether it’s a supermoon, a meteor shower, or simply the familiar glow of our lunar companion. Mark your calendars for future celestial events and enjoy the natural beauty our universe offers.

Indy Last Supermoon 2023 Shines Bright