Displaying items by tag: Nearest Stars

Tuesday, 28 June 2022 15:07

Ross 154

Ross 154, also known as V1216 Sgr is a red dwarf UV Ceti type flare star. Studied by Frank Elmore Ross in the 1920's for its variability and its proper motion. Located some 9.7 light years away, makes it currently the 6th closest star to our solar system. Despite the closeness, being a red dwarf, its magnitude is only 10.4 which requires an optical aid to see it. It's estimated to be a relative your star at 1 billion years. And so far no planets or circumstellar dust disk has been detected around it.

Published in Stars
Monday, 30 May 2022 16:31

Wolf 359 - 2022

A red dwarf star located in the constellation of Leo, its the reddish star located in the center of the image. It's name comes from astronomer Max Wolf who studied that exhibit large proper motion across the sky. A star with a large proper motion appears to move across the sky over the years. Most are relative close stars that their movement can be measured over the years.

One of the closer stars at 7.9 light years, but because its one of the dimmest of the local red dwarfs, its magnitude is a faint 13.5.

Image of Wolf 359 taken in 2015, compared to its current location shows its movement over the years.Wolf 359 2015-2022

Published in Stars
Friday, 13 November 2020 16:35

EZ Aqr 2020

EZ Aqr is a triple red dwarf system 11 light years away. Star "C" of the triplet orbits every 3.8 days, the other one "B" has a 823 day period.
All three of the stars have an estimated mass of a tenth of our Sun. No planetary companions have been found as of yet.

Image from 2005 showing its proper motion through the sky.

Published in Stars
Tuesday, 27 October 2020 13:17

Ross 248

Ross 248 or HH Andromedae is a red dwarf star currently located in Andromeda. At a distance of 103 light years, it is one of the closer stars. In about 33,000 years it will actually be the closest star for about 9,000 years as it comes with in 3 light years before continuing on. Despite its closeness, it shines only at a magnitude 12.3, so its not visible with out a telescope. As like many red dwarf stars, its also a flare star. No unseen companions have been detected around it so far.

As a closer star, some movement is visible in images taken years apart. This animation shows the movement over a 5 year period.

Published in Stars
Thursday, 08 October 2020 15:25

Trappist-1

Trappist 1 is an ultra cool red dwarf star currently located in Aquarius. It is slightly larger than Jupiter, but with a mass of over 80 times that of of Jupiter. Three planets were discovered around it in 2015, with 4 more added in 2017. The star is a dim 18.9 magnitude, despite its closeness.

Images taken two years apart indicate it's proper motion across the sky.

Published in Stars
Sunday, 23 August 2020 14:04

Barnard's Star 2020 Version

Barnard's Star is a red dwarf located 6 light years away. At mag 9.5 telescope is needed to see it. It displays the highest motion across the sky (proper motion). It's motion is visible in images taken a year apart. My images from 2014-2020.

Published in Stars
Thursday, 28 May 2020 16:00

Wolf 359

Wolf359 is a red dwarf star at a distance of 7.8 light years away from Earth. Located in the constellation of Leo it is one of the nearest stars. It is also one of the faintest low mass stars known. So despite its closeness, it takes a telescope to see it as it shines at a dim magnitude 13.5. A relative young star at less than 1 billion years, as a red dwarf, it will survive for a trillions of years. It is also a flare star with a high rate of flares. It possibly has two planetary objects around it. The Wolf designation comes from Max Wolf who studied high proper motion stars and kept a catalog of them. It's motion can be seen over the years across the sky.

Published in Stars
Friday, 02 August 2019 13:12

Barnard's Star 2019

Barnard's Star is a red dwarf star located 6 light years away in the constellation of Ophiuchus. Despite being relatively close, it is unable to be seen with out a telescope due to its dim nature. Being close by, and due to its motion, it displays the highest proper motion across the sky of any discovered star. That is, it appears to move across the sky faster than any other star.  

I attempt to image it every year to show its motion across the sky.

Published in Stars
Thursday, 09 August 2018 11:59

Trappist 1

Trappist 1 is an dim ultra cool red dwarf star located 39 light years away in the constellation of Aquarius. In size, it is only slightly larger than Jupiter but more massive. Despite only being 39 light years away, due to its size and type, it is a dim 18.8 magnitude in the "V" (Green) band and 16.5 magnitude in "R" (Red) band. It is suspected of having seven terrestrial planets orbiting it, detected by transits of the planets across the star's disk. Several could be in a zone where liquid water could exist.

Imaged with the ES127 refractor and Atik 314L+ mono ccd camera.

Published in Stars
Friday, 27 July 2018 13:52

Barnard's Star 2018

Barnard's Star is a low mass red dwarf star 6 light years away from Earth. It's biggest claim to fame is it displays the highest proper motion of any star. Proper motion is the apparent motion across the sky from our viewpoint here on Earth. This is mainly due to its relative closeness and speed and direction of travel in the galaxy. The image is a composite of images taken in July 2014 and merged with an image in July 2018. It's motion in the sky is apparent. Despite its closeness, being a low mass red dwarf star, its apparent magnitude in the sky is 9.5, requiring a telescope to see it. The star is an estimated 7-12 billion years old, and as a red dwarf it will live a very long lifetime. It will make its closest approach in the year 11,800 AD at 3.75 light years.

Published in Stars
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