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Forum » SpaceEngine » Space Journeys » The Biggest Star
The Biggest Star
TalismanDate: Saturday, 27.08.2011, 19:03 | Message # 1
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What's the biggest star you guys have found?

I think the biggest I've found was around 11 AU Diameter.





 
SpaceEngineerDate: Saturday, 27.08.2011, 23:57 | Message # 2
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LoL, it is big smile Show us the proof picture smile

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TalismanDate: Sunday, 28.08.2011, 00:39 | Message # 3
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Here we are, 12.6 AU Diameter (naming it the Talisman star), that's pretty big, even traveling lightspeed it takes many days to get around on the star.

I remember reading somewhere that the maximum size of a star is somewhere around 26 AU? That would be scary to see, so far it's the most big star I've seen in this game yet, 4-8 AU size stars are more common, and then giants around 1.5 AU are even more common, big stars are very hard to find.







Edited by Talisman - Sunday, 28.08.2011, 07:03
 
RobbieDate: Sunday, 28.08.2011, 07:44 | Message # 4
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The biggest star I've found so far is 'The Garnet Star.' But the largest known recorded star is VY Canis Majoris at 18 AU. But it's not in SE. The F3 search function doesn't find that star. I even used the abbreviation 'VY CMa.' How odd, I would have expected it to be in the engine especially considering its enormity..




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AkhilothDate: Sunday, 28.08.2011, 12:24 | Message # 5
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Oh, but it is in the game. You have to use the Henry-Draper Designation Number: "HD 58061". Glad I could help!
 
RobbieDate: Sunday, 28.08.2011, 16:12 | Message # 6
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Quote (Akhiloth)
Oh, but it IS in the game. You have to use the Henry-Draper Designation Number: "HD 58061". Glad I could help!


Thanks for the designation number.

On the homepage its meant to reference the stars using the Hipparcos catalog data. I eventually got the HIP destination number for VY CMa from Wikipedia (HIP 35793). The star can be found with that number too. However, there's something peculiar in Space-engine in how that information is displayed. The F3 search function does not display those two designations at all, but only when entering those numbers manually can the star be found. Also, the star's data is incorrect at its location: Its diameter reads 0.942 AU when it should read ~18 AU. which makes me wonder how accurate the other data is, and is the star's size correct in space.





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SpaceEngineerDate: Sunday, 28.08.2011, 21:46 | Message # 7
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Quote (Robbie)
The F3 search function does not display those two designations at all, but only when entering those numbers manually can the star be found.

Wow, this is a bug, thanks for discovering it. I will check it out.

This star in SpaceEngine is represented by the HIPPARCOS satellite data, and gives the distance at 561.79 pc. But wikipedia gives 1500 pc, which is the upper limit for distance. The same wiki gives parallax for the star of 1.78 ± 3.54 milliarcseconds (note huge measurement error!), which is equivalent to 1 / 0.00178 = 561.79 pc. SpaceEngine calculates luminosity using this distance and the apparent magnutude (8m), then calculates a radius from luminosity and star's temperature, and obtains 0.942 AU.

Anyway, "default" stars can be replaced and new stars can be added via scripts, so you can add all the biggest, brightest or any other stars that are not represented (or incorrectly represented) by SE's default catalog.

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viper205Date: Monday, 29.08.2011, 00:04 | Message # 8
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The F3 search function does not display those two designations at all, but only when entering those numbers manually can the star be found.


How do you search for objects manually?
 
TalismanDate: Monday, 29.08.2011, 01:23 | Message # 9
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Quote (viper205)
How do you search for objects manually?


Just input the name and even if it doesn't show on the list just press "goto".





 
FrostikenDate: Tuesday, 30.08.2011, 10:55 | Message # 10
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HD 58061 just brought me to a Red Giant with a diameter of 0.9 AU... sad
 
RobbieDate: Tuesday, 30.08.2011, 11:22 | Message # 11
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Quote (Frostiken)
HD 58061 just brought me to a Red Giant with a diameter of 0.9 AU...


If you read message 6 and 7 above you'll notice this has already been addressed smile





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HamguyDate: Monday, 07.11.2011, 06:24 | Message # 12
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Quote (Talisman)


Here we are, 12.6 AU Diameter (naming it the Talisman star), that's pretty big, even traveling lightspeed it takes many days to get around on the star.

I remember reading somewhere that the maximum size of a star is somewhere around 26 AU? That would be scary to see, so far it's the most big star I've seen in this game yet, 4-8 AU size stars are more common, and then giants around 1.5 AU are even more common, big stars are very hard to find.



are these types of stars exploding? and at the end of there life cycle? that is what i always think when i see them.
 
SpaceEngineerDate: Monday, 07.11.2011, 10:24 | Message # 13
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Red supergiants are formed from massive stars of O-B classes, and finally, they explode as type II supernova, forming a black hole. Less massive stars are formed as neutron star after explosion, and low-mass stars like our Sun do not explode, but form a planetary nebula with a white dwarf in its center.

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