Amalthea occultation chords

Asteroids

Asteroid 113 Amalthea to Occult Star

Here's an opportunity for amateur astronomers to reveal more about asteroid Amalthea's satellite.

Plot of Triton occultation chords

Celestial News & Events

Results from October's Triton Cover-Up

By watching a star’s disappearance, astronomers learned about the state of the ultrathin atmosphere of Triton, Neptune's largest moon.

Icy weirdness on par with Pluto

Celestial News & Events

Neptune's Moon Triton to Occult Star

Here’s an opportunity for amateurs to help improve our understanding of Neptune’s moon Triton.

Aldebaran occultation March 2017 map

Celestial News & Events

Aldebaran's Disappearing Act on March 4th

On the night of March 4th, all you'll need are your eyes to watch the Moon occult Aldebaran. Better yet, place yourself on the graze line.

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.

Camcorder for occultations

Celestial Objects to Observe

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.

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 News & Events

Excellent Asteroid Occultation Friday Morning, May 5, 2006

The best asteroid occultation ever predicted for the American Northeast happens before dawn on May 5, 2006.

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

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

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.

Occultations

Planetary Occultations for 2003

No matter where you live, there are plenty of chances to see an asteroid pass in front of a star this year.

Occultations

Lunar Occultation Highlights for 2003

Dozens of times this year, no matter where you live, the Moon can be seen hiding bright stars in its path. Here's when and where you can watch the Moon occult these stars.

Celestial Objects to Observe

Planetary Occultation Highlights for 2002

Five dozen of these spellbinding events, impossible to predict well until recently, are listed for observers worldwide.

Occultations

Lunar Occultation Highlights for 2002

Some stars that the Moon covers are so bright, you don’t even need a telescope. Here are some occultation highlights for 2002.

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