Astronomical Observing News (2/21 to 2/27)
There's not much going on this week in the skies above, but there are a lot of conjunctions to take a peek at! And of course, there's the comet Garradd that's still showing its tail to us down here on Earth, so make sure to catch it before it's gone. The rest that's going on this week:
- Until March: The Garradd comet is still at its peak! I just viewed it and it's amazing!
- February 21: New moon
- February 22: Io and Ganymede transits
- February 23: Io transit
- February 25: Venus-moon conjunction
- February 26: Jupiter-Moon conjunction
- February 27: Moon at its apogee (404,862 km)
Io always seems to have a lot of events, so here's a really cool picture of it, taken in the tenth orbit of Jupiter by NASA's Galileo spacecraft.
Below I have defined some of the events I will be notifying you about over the course of this repeating feature:
- Transit—When an astronomical object passes in front of another, like one of Jupiter's moons passing in front of Jupiter.
- Occultation—When one object is hidden by another object that passes between it and the observer.
- Moon Phases—It can be fun observing different phases of the moon. These are what fraction of the moon is dark. It is also fun observing the dark side.
- Conjunctions—Two (or more) bright objects in one field of view! This is when two or more astronomical objects are relatively close. Sometimes it is cool to see planets or bright stars pass by or behind the moon.
- Apogee or Perigee—This is when the moon is closest or furthest away from Earth. Not really for observing, but it can be interesting to view the moon when it is large and small.
- Meteor Showers—Easily observed by the naked eye or by binoculars.
- Comets—Not very often do these come around, but are amazing to watch.
- Lunar and Solar Eclipses—Mainly these are lunar eclipses, but if you get to see a solar eclipse you are very lucky! This is when an astronomical object passes into a shadow of another. This could be Jupiter's moons passing into its shadow, or vice versa.
- Solstices—This is when the Earth wobbles, or from Earth this is how the northernmost or southernmost point the sun is at. There are two each year. This is mainly for information.
- Equinoxes—This is when the earth is in the middle of its southernmost and northernmost position and it is equal. Again, this is mainly for knowledge.
- Declination of Moon—This is when the moon's path around the Earth is slightly tilted up or down. The declination is the furthest up or down it will go.
There may be more to come. When these are included, I will explain what they are.