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Mars at the moon's edge

Explore the Night with Bob King

Watch the Moon Occult Mars Before Sunrise on February 18th

Occultations of stars by the Moon occur routinely, but planetary lunar occultations are much rarer birds. That's why I hope you'll make the effort Tuesday morning February 18th to watch the waning crescent Moon occult the planet Mars.

Bumbling along

Occultations

The Moon Bumbles Into the Beehive Friday

The thick crescent Moon occults oodles of stars in the Beehive star cluster Friday evening for much of the Americas.

Explore the Night with Bob King

Will Sirius Disappear on February 18th?

On Monday night, February 18th, observers in the western U.S. and Mexico may see the occultation of a lifetime when a tiny asteroid momentarily blots out the night sky's brightest star.

Occultations

Venus Occults a Star and Mercury Joins Jupiter on the Winter Solstice

Bring in winter with a bang with a beautiful, close conjunction and a rare planet-star occultation.

Aldebaran Occultation

Explore the Night with Bob King

Don't Miss Aldebaran's Last Occultation Till 2033

The last and one of the most picturesque occultations of Aldebaran by the Moon happens on Tuesday morning, July 10. Catch it or wait 15 years for the next!

Celestial News & Events

November Occultations of Aldebaran & Regulus

The Moon occults two 1st-magnitude stars for much of North America just six days apart. The first event happens mostly in early-evening darkness, the second in broad daylight — an extra challenge for the adventurous.

Visibility zones for Two Occultations

Occultations

See Two Tricky Occultations — Neptune and Lambda (λ) Aqr

Now you see 'em, now you don't. Watch the Moon occult Neptune and nearby Lambda Aquarii on the same night.

Near miss

Explore the Night with Bob King

Moon Hides Hyades, Occults Aldebaran Friday

After a late-night ramble through the Hyades cluster, the waning gibbous Moon will cover up the bright star Aldebaran for observers across North America Friday morning.

Occultations

Watch Asteroid Juno Occult a Star

Watch an asteroid approach a star and block its light, all in a fraction of a second.

Celestial Objects to Observe

Occultation Web Resources

Occultations of stars and planets by the Moon and asteroids are exciting to watch, and amateur occultation timings can have real scientific value. But first you need to know what occultations will be happening in your area.

Occultations

An Occultation Primer

The Moon frequently passes in front of stars. In rare cases, planets and asteroids will also obscure starlight for a short time. Here are some basic definitions that will help you understand what occultations are about.

Camcorder for occultations

Occultations

Camcorder Timing Tips

Many households now possess a camcorder. Many amateur astronomers may be unaware that these devices are sensitive enough to record occultation events.

Occultations

Occultations: The Fastest Things in the Sky

Watch in your telescope as the edge of the Moon snaps a star out of sight.

Celestial Objects to Observe

How and Why to Make Occultation Timings

Lunar and planetary occultations may be appreciated for their intrinsic beauty, but in order to contribute scientifically valid data you need to apply certain techniques.

Celestial Objects to Observe

Lunar Occultation Highlights for 2005

No matter where you live in the world, you can see the Moon hide stars and planets in its path. Here's when and where you can watch dozens of these events this year.

Occultations

The Moon Occults Fiery Antares

Set your alarm clock to watch the last-quarter Moon cross a first-magnitude star on the morning of March 3rd.

Occultations

Asteroid Occultations: March–July 2005

Mobile observers with video cameras, capable of filling gaps between those at fixed sites, are especially needed to observe asteroid occultations.

Celestial Objects to Observe

Lunar Occultation Highlights for 2004

No matter where in the world you live, you can see the Moon hide stars and planets in its path. Here's when and where you can see dozens of lunar occultations this year.

Occultations

A Daytime Occultation of Jupiter

Here's a blue-sky project if ever there was one. The thin waning crescent Moon will occult the second-brightest planet as seen from much of North America on Tuesday, November 9th.

Occultations

Planetary Occultations for 2004

You've got plenty of chances to see an asteroid or planet pass in front of a star this year — and here's when and where to see them.

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