## Observing the winter circle gas equations chemistry

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Please examine the basic star map accompanying this article. This chart represents the sky in mid-February at 8:30 p.m., looking from a point directly overhead gas relief for babies home remedy towards the southern horizon. A circle, or actually an ellipse, can be drawn through each of the labeled stars. However, you can also draw a straight line from one star to the next and create a hexagon. Betelgeuse, though inside either pattern, is still considered part of the asterism.

Before we examine electricity for dummies amazon each of the stars in the Winter Circle, let’s review three important terms. First, the brightness of any celestial object is called its magnitude. The basic idea is that the more negative the magnitude, the brighter the object. The more positive the magnitude, the dimmer the object is. So the Sun is -26.74, the Full Moon -12.92, Venus -4.89, Saturn approximately 0, well known Polaris (the North Star) is magnitude +2, and the naked-eye limit with no light pollution is magnitude 6 gas laws +6. Pluto is about +13.65. (Usually the plus sign (+) is assumed and not used, but I do so in this column for clarity.)

Second, a star’s distance is measured in light years. One light year is equal to just under six trillion miles. Third, the spectral classification of a star is categorized using the following letters: O, B, A, F, G, K, M, and often followed electricity voltage in norway by additional numbers and letters to further refine the classification. “O” stars are the hottest while “M” stars are the coolest.

Let’s start our tour of the Winter Circle with the brightest star we can see in the sky (besides the Sun of course) — Sirius. Sirius is in Canis Major, the Big Dog. Sirius shines at magnitude -1.44 and it is 8.7 light years away. Do the math and this gas oil ratio fairly close neighbor to our Sun is 52.2 trillion miles from us. For you Rhode Islanders that’s much farther than 76 gas credit card login Woonsocket or Westerly! Sirius is a hot, blue-white star (spectral class A0) about 1.7 times the diameter of our Sun.

Next we move northward and clockwise in the sky to locate Procyon in Canis Minor, the Little Dog. Procyon is a white star (F5) shining at magnitude +0.40 and is 11 light years distant. It’s about twice the diameter of our Sun. Moving farther northward we encounter the Gemini twins, Pollux and Castor. Pollux is 34 light years distant, while e seva power bill payment Castor is 18 light years farther away at 52. Pollux is a cool, orange giant (K0) ten times the Sun’s diameter, while Castor is a hot, blue-white star (A1) only twice the diameter of the Sun. Pollux and Castor shine at +1.16 and +1.93 magnitude respectively.

Now we swing up and over to a constellation almost directly overhead — Auriga, where we find +1.93 magnitude Capella. While Capella (G6) is a class “G”-type yellow star like the Sun (G2), it has three times more mass and is just over v gashi seven times the Sun’s diameter. Next we proceed south to encounter the orange giant (K5) Aldebaran in Taurus. Aldebaran represents the bull’s eye in the star pattern known as the Hyades star cluster (shaped e sampark electricity bill payment like a “V”). Aldebaran, 65 light years away, is a cool star which has expanded to be just over 44 times the diameter of the Sun with only 2.5 times our Sun’s mass.

Continue to swing southward in the sky until we arrive at the bottom right star representing Orion’s left grade 6 electricity worksheets foot. (Please note: Orion is facing us.) This star is +0.18 magnitude Rigel, a blue supergiant (B8) 800 light years away — the most distant of the Winter Circle stars. Rigel is 62 times the diameter of our Sun and contains 17 times more mass. We now complete the tour of the Winter Circle by swinging back to Sirius.

But wait. No, I didn’t forget about Betelgeuse electricity for refrigeration heating and air conditioning 9th edition answers. Betelgeuse is the red supergiant (M2) star that marks the top right shoulder of Orion. It shines at magnitude +0.45 and resides at a distance of 520 light years. Betelgeuse is also a very large star, measuring in at a conservative 950 solar diameters. If you replaced our Sun with Betelgeuse it would extend out to the asteroid belt between Mars and Jupiter.

PS. Want to identify more constellations on your own? Visit Uncle Al’s Sky Wheels on the Internet (http://www.lhs.berkeley.edu/StarClock/skywheel.html). From this website you can download templates to assemble your own planisphere/starwheel. Instructions for assembly and use are included. I suggest you print on card stock paper. Then go outdoors on a clear night and explore la gastronomia the heavens.