Outer World 2017 #–
a Last Moon, few Planets in order, and the Coming Sun of an Age.
Sirius, a brief presentation.
does our sun revolve around sirius? you tell me
The diameter of the Earth is one-millionth that of the Solar System; but the diameter of the Solar System is only perhaps one forty millionth that of the Milky Way. When in our own system we find such relationships, it is not between sun and planets, but between sun and satellites of planets. That is to say, by analogy of scale and mass, we should expect the Solar System to be revolving about some greater entity, which in its turn was revolving about the centre of the Milky Way; just as the Moon revolves about the Earth, which in turn revolves about the Sun. What and where is this ‘sun’ of our Sun? Several attempts have been made to discern a ‘local’ system within the Milky Way, particularly by Charlier who in 1916 seemed to have established such a group 2000 light-years across and with its centre several hundred light-years away in the direction of Argo. If we study our immediate surroundings in the galaxy, we find an interesting gradation of stars, two of which are suggestive from this point of view…Full text HERE
|The position of Sirius (circled).|
Epoch J2000.0 Equinox J2000.0 (ICRS)
|Sirius (/ˈsɪriəs/) system|
|Right ascension||06h 45m 08.91728s|
|Declination||−16° 42′ 58.0171″|
|Apparent magnitude (V)||−1.46|
|Right ascension||06h 45m 08.917s|
|Declination||−16° 42′ 58.02″|
|Apparent magnitude (V)||−1.47|
|Right ascension||06h 45m 09.0s|
|Declination||−16° 43′ 06″|
|Apparent magnitude (V)||8.44|
|Evolutionary stage||Main sequence|
|Spectral type||A0mA1 Va|
|U−B colour index||−0.05|
|B−V colour index||+0.00|
|Evolutionary stage||White dwarf|
|U−B colour index||−1.04|
|B−V colour index||−0.03|
|Radial velocity (Rv)||−5.50 km/s|
|Proper motion (μ)||RA: −546.01 mas/yr
Dec.: −1223.07 mas/yr
|Parallax (π)||379.21 ± 1.58 mas|
|Distance||8.60 ± 0.04 ly
(2.64 ± 0.01 pc)
|Absolute magnitude (MV)||1.42|
|Absolute magnitude (MV)||11.18|
|Companion||α CMa B|
|Period (P)||50.1284 ± 0.0043 yr|
|Semi-major axis (a)||7.4957 ± 0.0025″|
|Eccentricity (e)||0.59142 ± 0.00037|
|Inclination (i)||136.336 ± 0.040°|
|Longitude of the node (Ω)||44.40 ± 0.071°|
|Periastron epoch (T)||1994.5715 ± 0.0058|
|Argument of periastron(ω)
|149.161 ± 0.075°|
|α CMa A|
|Mass||2.063 ± 0.023 M☉|
|Surface gravity (log g)||4.33 cgs|
|Metallicity [Fe/H]||0.50 dex|
|α CMa B|
|Mass||1.018 ± 0.011 M☉|
|Radius||0.0084 ± 3% R☉|
|Surface gravity (log g)||8.57 cgs|
(/ˈsɪri.əs/, a romanization of Greek Σείριος, Seirios, lit. “glowing” or “scorching”) is a star system and the brightest star in the Earth’s night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The system has the Bayer designation Alpha Canis Majoris (α CMa). What the naked eye perceives as a single star is a binary star system, consisting of a white main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, called Sirius B. The distance separating Sirius A from its companion varies between 8.2 and 31.5 AU.
Sirius appears bright because of its intrinsic luminosity and its proximity to Earth. At a distance of 2.6 parsecs(8.6 ly), as determined by the Hipparcos astrometry satellite, the Sirius system is one of Earth’s near neighbours. Sirius is gradually moving closer to the Solar System, so it will slightly increase in brightness over the next 60,000 years. After that time its distance will begin to increase and it will become fainter, but it will continue to be the brightest star in the Earth’s night sky for the next 210,000 years.
Sirius A is about twice as massive as the Sun (M☉) and has an absolute visual magnitude of 1.42. It is 25 times more luminous than the Sun but has a significantly lower luminosity than other bright stars such as Canopus or Rigel. The system is between 200 and 300 million years old. It was originally composed of two bright bluish stars. The more massive of these, Sirius B, consumed its resources and became a red giant before shedding its outer layers and collapsing into its current state as a white dwarf around 120 million years ago.
Sirius is also known colloquially as the “Dog Star“, reflecting its prominence in its constellation, Canis Major(Greater Dog). The heliacal rising of Sirius marked the flooding of the Nile in Ancient Egypt and the “dog days” of summer for the ancient Greeks, while to the Polynesians in the Southern Hemisphere the star marked winter and was an important reference for their navigation around the Pacific Ocean.
A Companion to our Sun?
The vast majority of observable stars are binary or multiple star systems. In these systems, two or more stars share a common focus of revolution and are gravitationally bound to each other in defined orbits. This is such a common observation such that the gravitational interaction of multiple stars appears to be the “normal” mode of stellar system formation.
6 Reasons to consider/
//just what is the real cause behind the precession of the equinoxes and why did the ancients believe this cycle was so important? Walter Cruttenden asks this question in his latest book Lost Star of Myth and Time and comes to some provocative conclusions.
To the layman, the precession of the equinoxes is the observed motion of the night sky shifting backwards by a small amount every year. Of course, the night sky continuously shifts throughout the year as the Earth orbits around the Sun, but if one were to take a fixed point in time (like the Vernal Equinox, for instance) and take a snapshot of the sky on that day every year, one would notice the sky slowly shifting backwards with each progressing year. This is what is meant by the precession of the zodiac, or precessional movement. Astrologers would say we are in a different ‘age’ or zodiac sign depending on which constellations are visible in the sky on the Vernal Equinox of a particular year. This precessional movement of the sky amounts to about 50 arc seconds per year and takes about 24,000-26,000 years to complete a full cycle; the “great year” or “great world cycle” as it is often called.
Sir Isaac Newton was the first to put forth the idea that this precession is due to a wobbly motion of the Earth’s axis, and few scientists have challenged this assumption since Newton’s time. Cruttenden dares to ask the most basic question about this in his book bringing together a number of clues to form a hypothesis for precession being the result of the Sun moving in a binary orbit about a companion star. Could Cruttenden’s speculations really lead to data that could overturn the ideas of Newton – a man treated like a deity in the world of physics and astronomy? As we’ll see below, there’s actually a large body of evidence to support Cruttenden’s ideas.
Outer World at the HOB 2017 out ////