Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Sweden Solar System

en.wikipedia.org

Post reply on HN
Print view View original

21–30 of 43 posts

Re: Sweden Solar System

#21

Post by saalweachter »

Kiro wrote: post #5

How accurate is it? It seems that a lot of locations were picked because of them being in museums and other significant places. I guess if it was really accurate they would end up in more inconvenient spots.

Earth's distance from the Sun varies by +/-~2% at its current eccentricity, and the eccentricity isn't constant. So at a distance of ~7.5 km (1:20 mil of Earth's average orbit) you've got a ring about 300 m wide around the Sun to find a museum in.

Other planets further away give you larger rings to search in; you could place Jupiter in a ring ~4 km wide ~39 km away, and it would be within the range of its orbit around the Sun.

That said, while the task is easier than you might think (since there isn't One True Position for each planet), I don't know how well they did.

Re: Sweden Solar System

#22

Post by Gravityloss »

Kiro wrote: post #5

How accurate is it? It seems that a lot of locations were picked because of them being in museums and other significant places. I guess if it was really accurate they would end up in more inconvenient spots.

Stockholm is actually jam packed with museums. You could spend a week there.

Re: Sweden Solar System

#25

Post by dbaupp »

Does anyone have a decent photo of the one (Saturn) in Uppsala? Surprisingly, I can't find any photo on the internet (searching in either English or Swedish), I lived there in 2012 and don't remember seeing a 6.1m circular object in Celsiustorget at all.

Re: Sweden Solar System

#26

Post by bencoder »

dbaupp wrote: post #25

Does anyone have a decent photo of the one (Saturn) in Uppsala? Surprisingly, I can't find any photo on the internet (searching in either English or Swedish), I lived there in 2012 and don't remember seeing a 6.1m circular object in Celsiustorget at all.

From the article:

> the model is a mat with a picture of Saturn, but will eventually grow to crown a school planetarium at the city

Re: Sweden Solar System

#27

Post by marvin »

lukedjn wrote: post #12

I shouldn't laugh, I really shouldn't... "Uranus (2.6 m in diameter) was vandalized"

If it's in Gävle, it would be a logical guess that it was vandalized due to the local population's decades-long tradition of vandalizing monuments.

http://en.wikipedia.org/wiki/G%C3%A4vle_goat

Re: Sweden Solar System

#28

Post by ivh »

dbaupp wrote: post #25

Does anyone have a decent photo of the one (Saturn) in Uppsala? Surprisingly, I can't find any photo on the internet (searching in either English or Swedish), I lived there in 2012 and don't remember seeing a 6.1m circular object in Celsiustorget at all.

It was a temporary thing during the "year of astronomy"; the mat was on the shopping street just outside the old Celsius observatory. For the time being there is no Saturn as far as I know. But its moon Titan should still be hanging at the same spot, a ~40cm semi-translucent sphere to represent the thick atmosphere.

Re: Sweden Solar System

#29

Post by dbaupp »

ivh wrote: post #28
dbaupp wrote: post #25

Does anyone have a decent photo of the one (Saturn) in Uppsala? Surprisingly, I can't find any photo on the internet (searching in either English or Swedish), I lived there in 2012 and don't remember seeing a 6.1m circular object in Celsiustorget at all.

It was a temporary thing during the "year of astronomy"; the mat was on the shopping street just outside the old Celsius observatory. For the time being there is no Saturn as far as I know. But its moon Titan should still be hanging at the same spot, a ~40cm semi-translucent sphere to represent the thick atmosphere.

Oh, I didn't realise it was temporary, thanks. (I walked past Celsiushuset many time but never noticed the moon. :( )

Re: Sweden Solar System

#30

Post by dbaupp »

bencoder wrote: post #26
dbaupp wrote: post #25

Does anyone have a decent photo of the one (Saturn) in Uppsala? Surprisingly, I can't find any photo on the internet (searching in either English or Swedish), I lived there in 2012 and don't remember seeing a 6.1m circular object in Celsiustorget at all.

From the article: > the model is a mat with a picture of Saturn, but will eventually grow to crown a school planetarium at the city

I didn't notice a mat with a picture of Saturn (and I walked past the place many times); but, ivh notes it was just temporary.
Post reply on HN