Posts Tagged ‘constellations’

My favorite Sky objects

Monday, July 27th, 2009

Aries - The Ram
Fun Facts:

1. Aries contains the galaxies NGC 697, NGC 772, NGC 972, and NGC 1156.
2. In greek mythology, this constellation represents the ram that carried Phrixus and Helle to escape their stepmother Ino. When they reached safety, Phrixus killed the ram (such gratitude!) and hung its fleece on a tree. The fleece turned to gold and became a quest for Jason and the Argonauts.
3. Meteor showers that pass through Aries are the May Arietids, Autumn Arietids, Delta Arietids, Epsilon Arietids, Daytime-Arietids, and the Aries-Triangulids.
4. The brightest star in Aries is Hamal, at a magnitude of 2.0.
5. It is best visible in December.

Cancer - The Crab
Fun Facts
1. Cancer is named after the crab who tried to stop Hercules from defeating the Hydra. The brave little crustacean was squashed for its efforts.
2. In the 1970’s there was an unsuccessful movement to change the name of this constellation, and thus the zodiac sign, since many felt the name Cancer reminded them of the disease process.
3. Cancer hides Praesepe (M44 or The Beehive Cluster) and M67 (one of the oldest clusters, around 10 billion years old).
4. Meteor showers that pass through Cancer include the Delta Cancrids.
5. Its brightest star is Al Tarf, at a magnitude of 3.5.
6. It is best viewed in March.
Cassiopeia - The Queen
This was the second constellation that I learned as a child.

Fun Facts:
1. In 1572, Tycho Brahe observed a supernova in Cassiopeia.
2. Cassiopeia A is the location of the second strongest radio source (after the sun).
3. Cassiopeia literally means “The Queen”. It represent the legendary queen of Ethiopia (the mother of Andromeda).
4. The Persied meteor shower passes through Cassiopeia every year.
5. It’s brightest star, Shedir, is a magnitude 2.23
6. If we were to observe the Sun from Alpha Centauri, it would appear to be in Cassiopeia.

Cassiopeia can be seen year round, usually low in the northern horizon. The best time to view it is in November
Gemini - The Twins
Fun Facts:

1. Gemini is best seen in February.
2. Zeus, the Greek king of the gods, once again seduces a maiden, this time in the form of a swan. From their pairing, two sons are born from an egg. The sons, Castor and Pollux, make up two of the stars of this constellation.
3. In 1930, the planet Pluto was discovered in Gemini.
4. On the western edge of this constellation lies M35, an open cluster of 5th magnitude.
Leo - The Lion
Fun Facts:
1. The legends of Hercules provides us with yet another great constellation. Leo, the lion, is named after the Nemean Lion which Hercules had to kill during his labours.
2. The Egyptians worship the lion because the sun was said to have been in this constellation during the time of the well-needed floods of the Nile.
3. Meteor showers that pass through Leo are the Leonids.
4. Leo’s brightest star is Regulus, at a magnitude 1.4.
5. Leo is best viewed in April.
6. Many galaxies can be found in Leo. Most notably M65, M66, M95, M96.
7. Wolf 359, one of the nearest stars to Earth’s solar system (7.7 light-years), is in Leo.

Orion - The Great Hunter
This was the first constellation I learned. It was easy to spot the three stars in a row that make up Orion’s belt. As an adult, I learned that Orion also holds a nebula, the fuzzy object close to the hunter’s “sword”.
Fun Facts:
1. Orion stands next to Canis Major and Canis Minor, his two hunting dogs.
2. He is also near Taurus the Bull (his enemy) and Lepus the Hare, (his prey).
3. Meteor showers that pass through Orion include the Orionids and the Chi Orionids.
4. Orion’s brightest star is Rigel, with a magnitude of 0.12.
5. At Orion’s right shoulder, sits Betelgeuse, a red star, larger than the orbit of Venus. Betelgeuse means “armpit” (really!!). The ancient Sumerians thought Orion looked more like a sheep, and Betelgeuse fell at the sheep’s armpit.
6. Bellatrix (”warrior woman”) is at Orion’s left shoulder.
7. The stars Alnitak, Alnilam and Mintaka form his belt.
8. His right knee is Saiph.
9. The large white star at his left knee is Rigel, one of the brightest stars in the sky.

Orion is very useful when trying to locate other constellations. Travel straight along his shoulders and see what you run into? Try the same thing from his belt.

Taurus - The Bull
Fun Facts:

1. Taurus holds one of the few first magnitude stars, Aldebaran, a fiery red star, which sits in the middle of this constellation.
2. Just to the east you’ll find the beautiful Pleiades.
3. The Crab Nebula, a supernova remnant, resides in Taurus. The explosion was seen on July 4, 1054. It was so bright it could be seen during the daytime! Chinese texts and Native American pottery depict the event.
4. Zeus, the ruler of the Greek gods, loved to change form to seduce lovely maidens. Taurus, the bull, is the form he took when he wooed Europa, a Phoenician princess.
The Pleiades
Located in the constellation Taurus, the Pleiades are an open cluster of luminous blue and white stars.
Fun Facts:
1. The Vikings considered them to be the goddess Freya’s hens.
2. Native Americans tested their vision by the number of stars they could see in the cluster. In our polluted cities, you are lucky if you can see five or six, but in a dark site you’ll see about 10. In reality, the Pleiades contain hundreds of stars, most too faint to see with the naked eye.
3. In Japan, they are knows as the Subaru. In fact, the Subaru car company uses the Pleiades as their logo.
4. The cluster is only expected to survive another 250 million years and is one of the younger clusters at an age of 100 million years.

Virgo - The Virgin
Fun Facts:

1. Virgo is the largest constellation.
2. Spica, the most prominent star in Virgo, represents an ear of wheat in the goddess’s hand.
3. The star, 70 Virginis, located in Virgo, is an extrasolar planetary system with one confirmed planet. This planet is 6.6 times the mass of Jupiter!
4. This constellation is full of galaxies, hence the name The Virgo Cluster: M49, M58, M59, M60, M61, M84, M86, M87, and M90.
5. The mythology of Virgo is uncertain. Every prominent goddess has been associated with this constellation.
6. Meteor showers that pass through Virgo are: Virginids and the Mu Virginids
7. Virgo is best seen during May