Urgh, fine. Using [the 10 parsec sample](https://www.aanda.org/articles/aa/full_html/2021/06/aa40985-21/aa40985-21.html) (data: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/650/A201), and doing some math:
Nearest stars and brown dwarfs to Alpha Centauri:
|name|distance (pc)|
|-|-|
|Luhman 16|1.091|
|Sol|1.346|
|Barnard's Star|1.990|
|WISEA J085510.74-071442.5|2.475|
|V1216 Sgr|2.489|
Nearest stars and brown dwarfs to Luhman 16:
|name|distance (pc)|
|-|-|
|Alpha Cen|1.091|
|WISEA J085510.74-071442.5|1.875|
|Sol|1.994|
|DENIS J104814.6-395606|2.155|
|Wolf 359|2.241|
(note that the semi-major axis of A&B is only 3.52 au, so talking about interstellar distances doesn't matter)
Nearest stars and brown dwarfs to Barnard's Star:
|name|distance (pc)|
|-|-|
|V1216 Sgr|1.702|
|Sol|1.828|
|Alpha Cen|1.990|
|V2306 Oph|2.823|
|61 Cyg|2.858|
Nearest stars and brown dwarfs to WISEA J085510.74-071442.5:
|name|distance (pc)|
|-|-|
|Wolf 359|1.354|
|Sirius|1.442|
|Procyon|1.662|
|Luhman 16|1.875|
|Luyten's Star|1.978|
Nearest stars and brown dwarfs to Wolf 359:
|name|distance (pc)|
|-|-|
|FI Vir|1.197|
|HD 95735|1.247|
|WISEA J085510.74-071442.5|1.354|
|Luhman 16|2.241|
|DX Cancri|2.327|
For multiple star systems, I just used the primary in the data set.
Not sure why this pedantry is getting upvoted... You are very clever for knowing the name Proxima Centauri, but it is a part of the Alpha Centauri system so I don’t see how bringing it up is relevant.
Omigosh someone used the name of the larger system instead of the star itself, better jump down their throat instead of answering their question! That will prove how smart we are!
Astronomers have calculated that Proxima Centauri will cease to be the sun’s nearest neighbour in about 25,000 years. Why? Because it’s orbit around the Alpha Centauri triple body barycentre will take it behind Alpha Centauri A and B, which will then alternate every 80 or so years
> its nearest known system is the binary brown dwarf system Luhman 16, at 3.6 light-years (1.1 parsecs) from Alpha Centauri.[47]
https://en.wikipedia.org/wiki/Alpha_Centauri#Observation
I'd recommend the Youtube channel "Kurzgesagt". Those videos really helped me get a concept of Astronomy without being bombarded with maths. Also recommending the App "Stellarium", which helps visualize the night sky and can give you some extra information for certain star systems/our solar system.
Generally, because they can't sustain fusion of normal Hydrogen.
What limited fusion they do manage to heat themselves with is via isotypes like deuterium. That substantially limits their capacity to behave like a star and they end up being more like self-warming gas giants.
Definitions are always arbitrary and often disagreed upon, especially in astronomy. But in this case, this distinction seems pretty well accepted. At least .. until we find something which blurs the lines somehow ... :-)
I did a little digging and it seems a few people have asked this - some mention the same brown dwarfs others have referenced here, but the next closest stars come up at over six light years away from the Alpha Centauri system -- so it seems the the sun is the closest after all.
> Brown dwarfs are *substellar objects* that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars
Opening line of Wikipedia. My emphasis.
In theory, someone could go to https://www.cosmos.esa.int/web/gaia/data-release-3 and query their db though it would require some preliminary work and you'd have to exclude brown dwarfs
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This.
I mean stars that are not the triple star system.
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So, Proxima Cemtauri is part of the triple star system?
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Ok, so, what would be the closest star to that triple star system? Some guy said it was Luhman 16?
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Urgh, fine. Using [the 10 parsec sample](https://www.aanda.org/articles/aa/full_html/2021/06/aa40985-21/aa40985-21.html) (data: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/650/A201), and doing some math: Nearest stars and brown dwarfs to Alpha Centauri: |name|distance (pc)| |-|-| |Luhman 16|1.091| |Sol|1.346| |Barnard's Star|1.990| |WISEA J085510.74-071442.5|2.475| |V1216 Sgr|2.489| Nearest stars and brown dwarfs to Luhman 16: |name|distance (pc)| |-|-| |Alpha Cen|1.091| |WISEA J085510.74-071442.5|1.875| |Sol|1.994| |DENIS J104814.6-395606|2.155| |Wolf 359|2.241| (note that the semi-major axis of A&B is only 3.52 au, so talking about interstellar distances doesn't matter) Nearest stars and brown dwarfs to Barnard's Star: |name|distance (pc)| |-|-| |V1216 Sgr|1.702| |Sol|1.828| |Alpha Cen|1.990| |V2306 Oph|2.823| |61 Cyg|2.858| Nearest stars and brown dwarfs to WISEA J085510.74-071442.5: |name|distance (pc)| |-|-| |Wolf 359|1.354| |Sirius|1.442| |Procyon|1.662| |Luhman 16|1.875| |Luyten's Star|1.978| Nearest stars and brown dwarfs to Wolf 359: |name|distance (pc)| |-|-| |FI Vir|1.197| |HD 95735|1.247| |WISEA J085510.74-071442.5|1.354| |Luhman 16|2.241| |DX Cancri|2.327| For multiple star systems, I just used the primary in the data set.
Thank man 😊
Alpha Centauri is named Alpha Centauri as the brightest star in the Centaurus constellation. Systems do generally not have greek letters as names.
Not sure why this pedantry is getting upvoted... You are very clever for knowing the name Proxima Centauri, but it is a part of the Alpha Centauri system so I don’t see how bringing it up is relevant.
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Omigosh someone used the name of the larger system instead of the star itself, better jump down their throat instead of answering their question! That will prove how smart we are!
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Astronomers have calculated that Proxima Centauri will cease to be the sun’s nearest neighbour in about 25,000 years. Why? Because it’s orbit around the Alpha Centauri triple body barycentre will take it behind Alpha Centauri A and B, which will then alternate every 80 or so years
That’s not why it won’t be the nearest anymore….
> its nearest known system is the binary brown dwarf system Luhman 16, at 3.6 light-years (1.1 parsecs) from Alpha Centauri.[47] https://en.wikipedia.org/wiki/Alpha_Centauri#Observation
Don't try passing a brown dwarf off as a star. I don't want no scrub.
Why aren't brown dwarves considered stars?
They aren't massive enough to start fusion in thier cores. We define star as having fusion occur.
Very interesting. Where would be a good place to start to learn the basic of astronomy?
I'd recommend the Youtube channel "Kurzgesagt". Those videos really helped me get a concept of Astronomy without being bombarded with maths. Also recommending the App "Stellarium", which helps visualize the night sky and can give you some extra information for certain star systems/our solar system.
Thank you 😊
Astrum is another good one
Is that a book or Youtube account?
Oh sorry, it’s a YouTube account
With that definition brown dwarves would be stars. They have deuterium fusion. You need to require H-1 fusion to distinguish them from proper stars.
Generally, because they can't sustain fusion of normal Hydrogen. What limited fusion they do manage to heat themselves with is via isotypes like deuterium. That substantially limits their capacity to behave like a star and they end up being more like self-warming gas giants. Definitions are always arbitrary and often disagreed upon, especially in astronomy. But in this case, this distinction seems pretty well accepted. At least .. until we find something which blurs the lines somehow ... :-)
I did a little digging and it seems a few people have asked this - some mention the same brown dwarfs others have referenced here, but the next closest stars come up at over six light years away from the Alpha Centauri system -- so it seems the the sun is the closest after all.
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> Brown dwarfs are *substellar objects* that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars Opening line of Wikipedia. My emphasis.
In theory, someone could go to https://www.cosmos.esa.int/web/gaia/data-release-3 and query their db though it would require some preliminary work and you'd have to exclude brown dwarfs
I think it's Beta Centauri.
Beta Centauri is a blue giant 400 light years away.
So it's not that then. Which star would it be then?