Lunar Grazes

There are no Lunar Graze alerts at this time!

If you wish to contribute your observations to the MAS group effort:

  1. You can video tape the event... 

  2. Or observe it visually. 

  3. Use a tape recorder and a radio, preferably short waved tuned to the official radio signal broadcast by WWV on 2.5, 5, 10, 15, and 20 mHz. Failing that, play radio station WLS at 890 AM. You can then record your voice comments and the radio onto the tape at the same time. Keep your comments short so we can hear the background radio station. If you are going to tape WLS, let the event coordinator know well in advance so they can arrange for simultaneous taping. 

  4. Also record your exact location. 

    Using this information, we can determine the size and shape of the asteroid and deduce other things such as its composition, mass, etc. 

    Not bad for looking through an eyepiece and speaking into your tape recorder. You need to be able to describe your location so that it can be found accurate to within about 50 feet on a high scale topographic map. 

    Asteroid may be observed from anywhere, but if you can get into the area of the predicted ground path of the asteroid go for it. Asteroid occultations which are predicted to miss the Milwaukee area are still worth observing because the predictions are often changed at the last minute due to new astrometry and also because many of the asteroids probably have moons or co-orbitals which luckily may occult the target star even if the main asteroid itself misses. In addition, a miss will help fix the asteroid's position. Do not let the faintness of some asteroids deter you from making occultation observations. In fact, it is better if the asteroid is too faint! It is easier to see the exact moment of occultation if you don't have to worry about watching two objects merge.