The Sirius Star System
Written by lightbeing
July 21, 2014

Sirius Star System

https://en.wikipedia.org/wiki/Sirius

Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 astronomical units (3.0×109 km; 1.9×109 mi)[note 7] (roughly the distance between the Sun and Uranus) and a period of 50.1 years. The brighter component, termed Sirius A, is a main-sequence star of spectral type A1V, with an estimated surface temperature of 9,940 K.[8]Its companion, Sirius B, is a star that has already evolved off the main sequence and become a white dwarf. Currently 10,000 times less luminous in the visual spectrum, Sirius B was once the more massive of the two.[94] The age of the system has been estimated at around 230 million years. Early in its lifespan it was thought to have been two bluish white stars orbiting each other in an elliptical orbit every 9.1 years.[94] The system emits a higher than expected level of infrared radiation, as measured by IRASspace-based observatory. This may be an indication of dust in the system, and is considered somewhat unusual for a binary star.[92][95] The Chandra X-ray Observatory image shows Sirius B outshining its bright partner as it is a brighter X-ray source.[96]

sirius2
H.E. Bond, E. Nelan, M. Burleigh, J.B. Holberg, STScI, NASA

Sirius A is hotter, bluer, and younger than our Sun, Sol.
This Hubble image also shows white dwarf companion Sirius B, at lower left

https://server1.sky-map.org/starview?object_type=1&object_id=201
Observation and Astrometry data

Constellation: Canis Major
Right ascension: 06h45m08.90s
Declination: -16°42’58.0″
Apparent magnitude: -1.46
Distance: 2.637 parsecs

Catalogs and designations:


Proper Names Sirius
Dog Star, Canicula, Sothis, Sopdet, Al Shira, Aschere, Mrgavyadha, Lubdhaka, Aoboshi, Lokibrenna, Hundastjarna, Skidi, Tishiya, Kak-shisha, Du-shisha, Mul-lik-ud, Kal-bu Sa-mas, Tir, Sihor, Hannabeah, Takarua, Hatun Coyllur, ?A??, Singuuriq, Proxima Canis Majoris, Your Mom    

That’s odd, Some people pronounce my name Tishiya, and I always correct them. Now, I know they are calling me Sirius! LOL!!!

https://en.wikipedia.org/wiki/Sirius


Chandra X-ray Observatoryimage of the Sirius star system, where the spike-like pattern is due to the support structure for the transmission grating. The bright source is Sirius B. Credit: NASA/SAO/CXC.

Canis Major

https://www.crystalinks.com/sirius.html

sirius4

 

sun and sirius

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8de3e38751-Sirius ABC

 

 

 

R U Sirius Enuff?

 

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