<p>I'm afraid I have to disagree with the apparent consent here, that naming the star makes little sense because of its very hypothetical nature.</p>
<p>There are lots of astronomical entities which have been named but whose existence hasn't been directly observed or is lacking major evidence. And why not name them? I'd like to defend this practice. It makes researching them and discussing them more straight forward. And if one day a hypothetical object that has been named is disproven, popular news can pick it up and go <em>&quot;Astrnomers finally ruled out the existense of Wubba-dubba-dub-dub&quot;</em>. Wouldn't that be a good thing?</p>
<p><strong>To actually answer your question:</strong><br />
The name for the sun's theoretical progenitor star has been proposed to be <em>Coatlicue</em> in a <a href="https://arxiv.org/abs/1208.5879" rel="nofollow noreferrer">paper from August 2012</a>. It has been adopted by at least a few publications and has a <a href="https://en.wikipedia.org/wiki/Coatlicue_(star)#cite_note-gounelle-1" rel="nofollow noreferrer">wikipedia article in 5* languages</a>, which has to count for at least something.</p>
<p>The name stems from <em>Coatlicue</em> - the mother of the sun in Aztec Cosmology/Mythology.</p>
<p>* As of 2023/08/28.</p>

CC BY-SA 4.0
2023-08-30T17:13:19.990Z
That name does not appear in the paper by Gounelle & Meynet.
Peter Erwin
CC BY-SA 4.0
2023-09-06T13:26:01.303Z
No they apparently did not name it in the paper itself but most probably during its publication and follow up discussion according to [this](https://www.scientificamerican.com/article/the-new-biography-of-the-sun/).
nada
CC BY-SA 4.0
2024-07-08T14:39:37.303Z
Thank you for answering this question!
James McLellan
CC BY-SA 4.0
2023-08-28T12:11:19.670Z
2023-08-28T12:11:19.670Z
nada
<blockquote>
  <p>I couldn't find a name for this hypothetical star/nova after some research.</p>
</blockquote>

<p>First off, the existence of this former object is hypothetical. Others working in this field have different hypotheses / conjectures; the science is far from settled. Secondly, if true, this star formed a supernova at the time the solar system was born and hence it no longer exists as a star. Thirdly, what's the point? Naming this hypothetical object would add zero credence to the hypothesis, and arguably would detract as being a bit premature.</p>

CC BY-SA 4.0
2018-07-17T13:58:34.710Z
Excellent points!  The main value a name would have is to make it easier for the authors' university's press office to hype the paper. (A lot of names serve no other purpose than this.)
Mark Olson
CC BY-SA 4.0
2023-09-24T21:06:40.543Z
We gave Theia a name.
Jack R. Woods
CC BY-SA 4.0
2018-07-17T13:25:27.077Z
2018-07-17T13:25:27.077Z
David Hammen
<p>Names of stars can serve a variety of purposes. Let's look at the different names and designations of <a href="https://en.wikipedia.org/wiki/Betelgeuse" rel="nofollow noreferrer">Betelgeuse</a>, for example.</p>

<ul>
<li>A star's colloquial name, for lack of a better word, <a href="https://en.wikipedia.org/wiki/IAU_Working_Group_on_Star_Names" rel="nofollow noreferrer">is sometimes chosen to recognize past cultural value</a>. In the case of Betelgeuse, this name is . . . Betelgeuse. In the case of the hypothetical star, though, there is no name from antiquity, as it was not around in antiquity.</li>
<li>A star's <a href="https://en.wikipedia.org/wiki/Bayer_designation" rel="nofollow noreferrer">Bayer designation</a> describes what constellation it is in and its apparent brightness. Betelgeuse appears to us as one of the brightest stars in Orion, so its Bayer designation is $\alpha$ Orionis. As we know nothing about the location or absolute magnitude of the hypothetical star (and heck, the constellations wouldn't have been the same 4.6 billion years ago), giving it a Bayer designation would be pointless.</li>
<li>The name of a star in various catalogs may be arbitrary or may tell you something about its current location in the sky (see for instance the <a href="https://en.wikipedia.org/wiki/Henry_Draper_Catalogue" rel="nofollow noreferrer">Henry Draper Catalogue</a>. However, as I said above, things change on astronomical timescales, and a star will wander from its celestial coordinates on timeframes of hundreds, thousands, or millions of years. And there's no point in assigning this star an arbitrary number.</li>
</ul>

<p>Finally, <a href="https://astronomy.stackexchange.com/a/26975/2153">as David Hammen said</a>, the existence of this star is still very much hypothetical. Assuming that <a href="http://iopscience.iop.org/article/10.1088/2041-8205/756/1/L9/meta" rel="nofollow noreferrer">the paper he found</a> is the right one (and I think it is), the authors don't claim to identify the supernova progenitor with any supernova remnant, location in the sky, or astronomical object. They simply attempt to support the supernova hypothesis with more modeling, something which itself isn't new in the context of this theory. It's certainly nowhere near compelling enough to name the hypothetical object, nor, I think, is the overall evidence for the theory.</p>

CC BY-SA 4.0
2018-07-17T13:49:19.723Z
2018-07-17T14:07:36.790Z
2018-07-17T14:07:36.790Z
HDE 226868
<p>I found <a href="https://www.space.com/16943-supernova-explosion-solar-system-formation.html" rel="nofollow noreferrer">an article</a> suggesting a supernova injected debris which helped nudge the formation of the Solar System 4.5 billion years ago.</p>

<p>I couldn't find a name for this hypothetical star/supernova after some research. Is there one? What is it?</p>

CC BY-SA 4.0
2018-07-17T12:00:48.047Z
There is none. Why would there? We call it "the supernova that injected $\rm Al^{26}$ into the young solar nebula". We have no other specifics than that, and that it probably happened in some birth cluster. Without specifics, naming it would seem silly.
AtmosphericPrisonEscape
CC BY-SA 4.0
2018-07-17T12:29:49.707Z
The referenced site, space.com, is something I steer clear of. It has a key problem that is even worse than the chock-full of ads nature of that site (some of which want to infect my computer), even worse that space.com fails to distinguish between woo, conjecture, and well-established science. My biggest gripe is that that site almost never provides links to their source material (most likely a press release from the institution for which one of the authors worked), or to scientific journal paper(s) that resulted from the work.
David Hammen
CC BY-SA 4.0
2018-07-17T12:39:40.407Z
_"The solar system"_ isn't much of a name. So I wouldn't be expecting too much here James.
John Duffield
CC BY-SA 4.0
2018-07-17T12:48:44.320Z
I believe this is the underlying scientific journal paper: [Boss, Alan P., and Sandra A. Keiser. "Supernova-triggered molecular cloud core collapse and the Rayleigh-Taylor fingers that polluted the solar nebula." The Astrophysical Journal Letters 756, no. 1 (2012): L9](http://iopscience.iop.org/article/10.1088/2041-8205/756/1/L9/meta).
David Hammen
CC BY-SA 4.0
2018-07-17T13:15:01.310Z
@AtmosphericPrisonEscape - That would be an asymptotic giant branch (AGB) star rather than a supernova. Supernova produce a good amount of $^{60}\text{Fe}$, but not very much $^{26}\text{Al}$. If I got the underlying journal paper correct, the authors argue for a supernova rather than an AGB star, and hence focused on $^{60}\text{Fe}$.
David Hammen
CC BY-SA 4.0
2018-07-17T14:28:51.843Z
Given the naming convention of the IAU, I suspect it may be called `SN-4500000000A`
Beta Decay
CC BY-SA 4.0
2018-07-17T16:58:50.400Z
@DavidHammen: Thank you for the clarification. My stellar evolution is a bit rusty.
AtmosphericPrisonEscape
<the-sun><solar-system><supernova>
Is there a name for the star/supernova hypothesized to have been a precursor to the Solar System?
James McLellan
# Is there a name for the star/supernova hypothesized to have been a precursor to the Solar System?

(Asked by: username_0 on 2018-07-17)

I found [an article](https://www.space.com/16943-supernova-explosion-solar-system-formation.html) suggesting a supernova injected debris which helped nudge the formation of the Solar System 4.5 billion years ago.

I couldn't find a name for this hypothetical star/supernova after some research. Is there one? What is it?

**Tags:** the-sun, solar-system, supernova
> **Comments:**
> **username_1**: There is none. Why would there? We call it "the supernova that injected $\rm Al^{26}$ into the young solar nebula". We have no other specifics than that, and that it probably happened in some birth cluster. Without specifics, naming it would seem silly.  
> **username_2**: The referenced site, space.com, is something I steer clear of. It has a key problem that is even worse than the chock-full of ads nature of that site (some of which want to infect my computer), even worse that space.com fails to distinguish between woo, conjecture, and well-established science. My biggest gripe is that that site almost never provides links to their source material (most likely a press release from the institution for which one of the authors worked), or to scientific journal paper(s) that resulted from the work.  
> **username_3**: _"The solar system"_ isn't much of a name. So I wouldn't be expecting too much here James.  
> **username_2**: I believe this is the underlying scientific journal paper: [Boss, Alan P., and Sandra A. Keiser. "Supernova-triggered molecular cloud core collapse and the Rayleigh-Taylor fingers that polluted the solar nebula." The Astrophysical Journal Letters 756, no. 1 (2012): L9](http://iopscience.iop.org/article/10.1088/2041-8205/756/1/L9/meta).  
> **username_2**: @AtmosphericPrisonEscape - That would be an asymptotic giant branch (AGB) star rather than a supernova. Supernova produce a good amount of $^{60}\text{Fe}$, but not very much $^{26}\text{Al}$. If I got the underlying journal paper correct, the authors argue for a supernova rather than an AGB star, and hence focused on $^{60}\text{Fe}$.  
> **username_4**: Given the naming convention of the IAU, I suspect it may be called `SN-4500000000A`  
> **username_1**: @DavidHammen: Thank you for the clarification. My stellar evolution is a bit rusty.  

---

## 3 answers

### Answer by username_5 on 2023-08-28. Score: 3 | Accepted answer

I'm afraid I have to disagree with the apparent consent here, that naming the star makes little sense because of its very hypothetical nature.

There are lots of astronomical entities which have been named but whose existence hasn't been directly observed or is lacking major evidence. And why not name them? I'd like to defend this practice. It makes researching them and discussing them more straight forward. And if one day a hypothetical object that has been named is disproven, popular news can pick it up and go *"Astrnomers finally ruled out the existense of Wubba-dubba-dub-dub"*. Wouldn't that be a good thing?

**To actually answer your question:**  
The name for the sun's theoretical progenitor star has been proposed to be *Coatlicue* in a [paper from August 2012](https://arxiv.org/abs/1208.5879). It has been adopted by at least a few publications and has a [wikipedia article in 5\* languages](https://en.wikipedia.org/wiki/Coatlicue_(star)#cite_note-gounelle-1), which has to count for at least something.

The name stems from *Coatlicue* - the mother of the sun in Aztec Cosmology/Mythology.

\* As of 2023/08/28.

> **Comments:**
> **username_6**: That name does not appear in the paper by Gounelle & Meynet.  
> **username_5**: No they apparently did not name it in the paper itself but most probably during its publication and follow up discussion according to [this](https://www.scientificamerican.com/article/the-new-biography-of-the-sun/).  
> **username_0**: Thank you for answering this question!  

---

### Answer by username_2 on 2018-07-17. Score: 7

> I couldn't find a name for this hypothetical star/nova after some research.

First off, the existence of this former object is hypothetical. Others working in this field have different hypotheses / conjectures; the science is far from settled. Secondly, if true, this star formed a supernova at the time the solar system was born and hence it no longer exists as a star. Thirdly, what's the point? Naming this hypothetical object would add zero credence to the hypothesis, and arguably would detract as being a bit premature.

> **Comments:**
> **username_7**: Excellent points!  The main value a name would have is to make it easier for the authors' university's press office to hype the paper. (A lot of names serve no other purpose than this.)  
> **username_8**: We gave Theia a name.  

---

### Answer by username_9 on 2018-07-17. Score: 4

Names of stars can serve a variety of purposes. Let's look at the different names and designations of [Betelgeuse](https://en.wikipedia.org/wiki/Betelgeuse), for example.

* A star's colloquial name, for lack of a better word, [is sometimes chosen to recognize past cultural value](https://en.wikipedia.org/wiki/IAU_Working_Group_on_Star_Names). In the case of Betelgeuse, this name is . . . Betelgeuse. In the case of the hypothetical star, though, there is no name from antiquity, as it was not around in antiquity.
* A star's [Bayer designation](https://en.wikipedia.org/wiki/Bayer_designation) describes what constellation it is in and its apparent brightness. Betelgeuse appears to us as one of the brightest stars in Orion, so its Bayer designation is $\alpha$ Orionis. As we know nothing about the location or absolute magnitude of the hypothetical star (and heck, the constellations wouldn't have been the same 4.6 billion years ago), giving it a Bayer designation would be pointless.
* The name of a star in various catalogs may be arbitrary or may tell you something about its current location in the sky (see for instance the [Henry Draper Catalogue](https://en.wikipedia.org/wiki/Henry_Draper_Catalogue). However, as I said above, things change on astronomical timescales, and a star will wander from its celestial coordinates on timeframes of hundreds, thousands, or millions of years. And there's no point in assigning this star an arbitrary number.

Finally, [as David Hammen said](https://astronomy.stackexchange.com/a/26975/2153), the existence of this star is still very much hypothetical. Assuming that [the paper he found](http://iopscience.iop.org/article/10.1088/2041-8205/756/1/L9/meta) is the right one (and I think it is), the authors don't claim to identify the supernova progenitor with any supernova remnant, location in the sky, or astronomical object. They simply attempt to support the supernova hypothesis with more modeling, something which itself isn't new in the context of this theory. It's certainly nowhere near compelling enough to name the hypothetical object, nor, I think, is the overall evidence for the theory.


---

