<h1>Equal mass</h1>
<p><strong><a href="http://en.wikipedia.org/wiki/Alpha_Centauri" rel="nofollow noreferrer">Alpha Centauri</a></strong>, the nearest star system to us, is composed of a binary star and Proxima Centauri (making it a triple star system). Alpha Centauri A has a mass of 1.1 M<span class="math-container">$_{\odot}$</span>, while Alpha Centauri B has a mass of 0.9 M<span class="math-container">$_{\odot}$</span>.</p>
<p>If you count brown dwarfs, <strong><a href="http://en.wikipedia.org/wiki/Luhman_16" rel="nofollow noreferrer">Luhman 16</a> are a good target, with each being about 0.04 M<span class="math-container">$_{\odot}$</span></strong>.</p>
<h1>Unequal mass</h1>
<p><strong><a href="http://en.wikipedia.org/wiki/Eta_Carinae" rel="nofollow noreferrer">Eta Carinae</a></strong> contains a Luminous Blue Variable (LBV) with a mass of 120-160 M<span class="math-container">$_{\odot}$</span> and a smaller (but still very massive) star with a mass of 30-60 M<span class="math-container">$_{\odot}$</span>.</p>
<p><strong><a href="http://en.wikipedia.org/wiki/Sirius" rel="nofollow noreferrer">Sirius</a></strong> is okay, though with two stars of much smaller masses, 2 M<span class="math-container">$_{\odot}$</span> and 1 M<span class="math-container">$_{\odot}$</span>.</p>
<h1>Double binary</h1>
<p><strong><a href="http://en.wikipedia.org/wiki/Mizar_and_Alcor" rel="nofollow noreferrer">Mizar</a></strong>, in reality part of a six-star system (Mizar/Alcor), has four stars separated into two pairs. This  ensemble then interacts with the binary star Alcor.</p>
<hr />
<p>You can find plenty of stars <a href="http://en.wikipedia.org/wiki/Star_system" rel="nofollow noreferrer">here</a>.</p>

CC BY-SA 3.0
2015-04-18T18:25:23.597Z
Thanks HDE, I did notice Wikipedia page but it couldn't see what I exactly wanted.
MiscellaneousUser
CC BY-SA 3.0
2015-04-18T18:12:37.660Z
2015-04-18T18:12:37.660Z
2020-06-17T09:47:40.653Z
HDE 226868
<p>Can anyone give me an example of a star (ideally those with a common name e.g. Rigel, Sirius, etc) of the following multiple star systems.</p>

<p>Equal Mass Star System, where two binary stars orbit round a central point of space.</p>

<p>Unequal Mass Star System, where a smaller star(s) orbits round a larger binary star.</p>

<p>Double Binary where two sets of binary stars orbit round a spot. (Regulus?)</p>

<binary-star>
Examples of Equal Mass, Unequal Mass and Double Binary Star Systems
MiscellaneousUser
# Examples of Equal Mass, Unequal Mass and Double Binary Star Systems

(Asked by: username_0 on 2015-04-18)

Can anyone give me an example of a star (ideally those with a common name e.g. Rigel, Sirius, etc) of the following multiple star systems.

Equal Mass Star System, where two binary stars orbit round a central point of space.

Unequal Mass Star System, where a smaller star(s) orbits round a larger binary star.

Double Binary where two sets of binary stars orbit round a spot. (Regulus?)

**Tags:** binary-star

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## 1 answers

### Answer by username_1 on 2015-04-18. Score: 2 | Accepted answer

# Equal mass

**[Alpha Centauri](http://en.wikipedia.org/wiki/Alpha_Centauri)**, the nearest star system to us, is composed of a binary star and Proxima Centauri (making it a triple star system). Alpha Centauri A has a mass of 1.1 M$\_{\odot}$, while Alpha Centauri B has a mass of 0.9 M$\_{\odot}$.

If you count brown dwarfs, **[Luhman 16](http://en.wikipedia.org/wiki/Luhman_16) are a good target, with each being about 0.04 M$\_{\odot}$**.

# Unequal mass

**[Eta Carinae](http://en.wikipedia.org/wiki/Eta_Carinae)** contains a Luminous Blue Variable (LBV) with a mass of 120-160 M$\_{\odot}$ and a smaller (but still very massive) star with a mass of 30-60 M$\_{\odot}$.

**[Sirius](http://en.wikipedia.org/wiki/Sirius)** is okay, though with two stars of much smaller masses, 2 M$\_{\odot}$ and 1 M$\_{\odot}$.

# Double binary

**[Mizar](http://en.wikipedia.org/wiki/Mizar_and_Alcor)**, in reality part of a six-star system (Mizar/Alcor), has four stars separated into two pairs. This ensemble then interacts with the binary star Alcor.

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You can find plenty of stars [here](http://en.wikipedia.org/wiki/Star_system).

> **Comments:**
> **username_0**: Thanks HDE, I did notice Wikipedia page but it couldn't see what I exactly wanted.  

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