Author Topic: Astronomy thread/Kìng a teri tanhìä tìftia  (Read 113251 times)

0 Members and 1 Guest are viewing this topic.

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #140 on: December 02, 2014, 05:28:08 pm »
Quote
So seemingly I am the beginner or I'm just not able to go stargazing under dark skies with a telescope.

My start was very similar :)  I started with astronomy 10 years ago.

Offline Vawmataw

  • Palulukan Makto
  • *****
  • *
  • Posts: 6671
  • nv Eywa'eveng
  • Karma: 103
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #141 on: December 02, 2014, 05:34:17 pm »
There's hope. :) :D



In 1.4 million years, Gliese 710 should be at ONE light-years from the Sun. The comets will be pertubated, but what else?
« Last Edit: December 02, 2014, 06:57:05 pm by Vawmataw »
Fmawn Ta 'Rrta - News every weekend IN NA'VI ONLY (Discord)
Kelutral.fr editor

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #142 on: December 03, 2014, 02:56:02 pm »
Quote
In 1.4 million years, Gliese 710 should be at ONE light-years from the Sun. The comets will be pertubated, but what else?

Yes, gravity of this star will be able affect the comets in the Oorth cloud and same send on a collision course with Earth and other planets.

----------

And there is true challenge for astronomers with bigger telescopes and excellent dark sky:

http://www.astronomy-mall.com/Adventures.In.Deep.Space/aintno.htm

 ;D ;D ;D








Offline `Eylan Ayfalulukanä

  • Palulukan Makto
  • *****
  • *
  • *
  • Posts: 4767
  • us United States
  • Karma: 44
  • Palulukan alu Kenya 06/23/1996 - 01/15/2017
    • The Lionlamb website
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #143 on: December 03, 2014, 03:35:48 pm »

And there is true challenge for astronomers with bigger telescopes and excellent dark sky:

http://www.astronomy-mall.com/Adventures.In.Deep.Space/aintno.htm

 ;D ;D ;D

Ma Toliman, why do you post such easy observing lists? I've seen all of these with a 3 inch department store refractor (with a cracked plastic objective lens). You need to post something a little more challenging ;) ;) ;)

Yawey ngahu!
pamrel si ro [email protected]

Offline Vawmataw

  • Palulukan Makto
  • *****
  • *
  • Posts: 6671
  • nv Eywa'eveng
  • Karma: 103
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #144 on: December 03, 2014, 04:10:55 pm »
Quote
In 1.4 million years, Gliese 710 should be at ONE light-years from the Sun. The comets will be pertubated, but what else?

Yes, gravity of this star will be able affect the comets in the Oorth cloud and same send on a collision course with Earth and other planets.
Only that? Gliese 710 will be inside our solar system.
Fmawn Ta 'Rrta - News every weekend IN NA'VI ONLY (Discord)
Kelutral.fr editor

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #145 on: December 03, 2014, 04:21:15 pm »
Quote
Ma Toliman, proč jste po takové jednoduché pozorování seznamy? Viděl jsem všechny tyto s 3 palce obchodního domu refraktor (s prasklou plastovou objektivem). Musíte přidat něco trochu náročnějšíMrknutí Mrknutí Mrknutí

You realy saw sun glint off of Voyager 1 nn telescope and 100 Messier's object by naked eye? Your eye must have a retina replaced by CCD. ;D
(such super-eye ... I want!)
« Last Edit: December 03, 2014, 05:03:22 pm by Toliman »

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #146 on: December 03, 2014, 04:49:17 pm »
Quote
Only that? Gliese 710 will be inside our solar system.

Yes, I think that gravity of Gliese 710 only affect comet in Oort cloud. Stability of planetary orbits not be affected, because one light year is relatively big distance and Gliese 710 has "only" 60% of mass Sun. All planet in solar system will stay in sphere of gravitational influence of Sun.
For comparation: Neptune is distanced 30 AU, Kuiper belt approximately 80 AU and one light year is 63000 AU. (1 AU is distance between Sun and Earth). This difference is big.

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #147 on: December 03, 2014, 05:55:25 pm »
And there is ilustration of our solar system with Oort cloud, which is very vast against internal parts of solar system


Offline Vawmataw

  • Palulukan Makto
  • *****
  • *
  • Posts: 6671
  • nv Eywa'eveng
  • Karma: 103
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #148 on: December 03, 2014, 05:58:55 pm »
The gravity of the Sun would dominate on Gliese 710's one, right?

Other fact: Gliese 710, even at 1 ly from us, will look like a normal star. (oìsss)

Quote
Ma Vamataw, I am really happy to hear you have a 'scope now!
:D
« Last Edit: December 03, 2014, 06:19:23 pm by Vawmataw »
Fmawn Ta 'Rrta - News every weekend IN NA'VI ONLY (Discord)
Kelutral.fr editor

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #149 on: December 03, 2014, 06:22:54 pm »
Quote
The gravity of the Sun would take over Gliese 710's one, right?

I think that gravity of the sun does not take over Gliese 710 (from distance 1 light year), but only change her trajectory. For take overing is 1 light year big distance (in this case).


Quote
Other fact: Gliese 710, even at 1 ly from us, will look like a normal star. (oìsss)

Yes, Gliese 710 from arround 1 light year will be visible as star with apparent magnitude arround 0.5 (Procyon in Canis Minor has 0.4 mag.). Gliese 710  will be very bright star.

« Last Edit: December 03, 2014, 06:29:04 pm by Toliman »

Offline Vawmataw

  • Palulukan Makto
  • *****
  • *
  • Posts: 6671
  • nv Eywa'eveng
  • Karma: 103
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #150 on: December 03, 2014, 06:26:24 pm »
Quote
Yes, Gliese 710 from arround 1 light year will be visible as star with apparent magnitude arround 0.5 (Procyon in Canis Minor has 0.4 mag.). Gliese 710  will be very bright star.
Which magnitude has the Sun from Pluto?
Fmawn Ta 'Rrta - News every weekend IN NA'VI ONLY (Discord)
Kelutral.fr editor

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #151 on: December 03, 2014, 06:39:07 pm »
Quote
Which magnitude has the Sun from Pluto?

arround -19 mag (for compare, full Moon has -12,7 mag and Sun from Earth has over -26 mag)


Offline Vawmataw

  • Palulukan Makto
  • *****
  • *
  • Posts: 6671
  • nv Eywa'eveng
  • Karma: 103
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #152 on: December 03, 2014, 06:44:42 pm »
Interesting. A very, very small point but brighter than the Moon.
Fmawn Ta 'Rrta - News every weekend IN NA'VI ONLY (Discord)
Kelutral.fr editor

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #153 on: December 03, 2014, 06:53:53 pm »
Quote
Interesting. A very, very small point but brighter than the Moon.

Yes, from Pluto is not possible see Sun as disc by naked eye (as from Earth), but only as very bright star. In telescope (from Pluto) is Sun size as 1.5 Jupiters from Earth (approximately).
« Last Edit: December 04, 2014, 11:53:31 am by Toliman »

Offline archaic

  • Palulukan Makto
  • *****
  • Posts: 3587
  • Karma: 74
  • Writing more fanfic.
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #154 on: December 03, 2014, 07:23:44 pm »
Yes, Gliese 710 from arround 1 light year will be visible as star with apparent magnitude arround 0.5 (Procyon in Canis Minor has 0.4 mag.). Gliese 710  will be very bright star.
I'm feeling sleepy just now, about to go to bed, but I made Gliese 710 apparent magnitude approximately 0.15 at one light year distance?







Need a sleepy smilie.
Pasha, an Avatar story, my current fanfic, Avatar related.

The Dragon Affair my last fanfic, non Avatar related.

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #155 on: December 04, 2014, 12:12:11 pm »
Quote
I'm feeling sleepy just now, about to go to bed, but I made Gliese 710 apparent magnitude approximately 0.15 at one light year distance?

Yes, 0.5 mag is badly. I saw on bad value  :( (I posted this after midnight, and I was tired. As you  ;D). But I think that also 0.15 mag is not correct value. I found different values in several sources.

So I tried calculate apparent magnitude of Gliese 710 from Pogson’s equation today. The resultant apparent magnitude is 0.84 for distance 1.1 ly (the closest approach).

As 0.15 mag star would be visible from distace 0.8 ly.

I calculated with this values for Gliese 710:
Current distance: 64 ly = 19.6 pc
Absolute magnitude: 8.20
The closest approach: 1.1 ly = 0,337 pc
« Last Edit: December 04, 2014, 12:42:15 pm by Toliman »

Offline archaic

  • Palulukan Makto
  • *****
  • Posts: 3587
  • Karma: 74
  • Writing more fanfic.
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #156 on: December 04, 2014, 06:11:57 pm »
Was attempting to apply inverse square law to it, not easy with a dose of sleep deprivation.
Pasha, an Avatar story, my current fanfic, Avatar related.

The Dragon Affair my last fanfic, non Avatar related.

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #157 on: December 11, 2014, 04:54:36 pm »
5 billion years in the future, the Andromeda Galaxy will collide with our Milky Way. The view on night sky will be surely amazing at this time.
Current distance of Andromeda Galaxy is approx. 2.5 million light years and this galaxy is on dark sky easily visibe by naked eye.
The Sun will be at the end of life at this time.


Offline Vawmataw

  • Palulukan Makto
  • *****
  • *
  • Posts: 6671
  • nv Eywa'eveng
  • Karma: 103
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #158 on: December 11, 2014, 05:00:47 pm »
Quote
5 billion years in the future
I thought it was 4 billion years.  :-\ But anyway, we will be dead.

Each picture lasts a few billion years. ;)
Fmawn Ta 'Rrta - News every weekend IN NA'VI ONLY (Discord)
Kelutral.fr editor

Offline Toliman

  • Palulukan Makto
  • *****
  • Posts: 8592
  • nv Eywa'eveng
  • Karma: 33
  • Tsatseng mìkam sanhì - tsaw lu oeyä kifkey!
Re: Astronomy thread/Kìng a teri tanhìä tìftia
« Reply #159 on: December 11, 2014, 05:16:15 pm »
Quote
I thought it was 4 billion years.
 
Oe lu skxawng ... yes, correctly is approx. 4 billion years


Quote
Undecided But anyway, we will be dead.
I want live a few billions years later (but not on the Earth in this time  ;D). The view on galaxy over half sky ... fantastic idea.

« Last Edit: December 11, 2014, 05:22:08 pm by Toliman »

 

Become LearnNavi's friend on Facebook Follow LearnNavi on Twitter! Watch LearnNavi's videos on YouTube

SMF 2.0.18 | SMF © 2021, Simple Machines | XHTML | RSS | WAP2 | Site Rules

LearnNavi is not affiliated with the official Avatar website,
James Cameron, LightStorm Entertainment or The Walt Disney Company.
All trademarks and servicemarks are the properties of their respective owners.
Images in the LearnNavi.org Forums and Gallery may not be used without permission.

LearnNavi Affiliates:
ToS

LearnNavi is the community to learn Na'vi, the Avatar Language
"A place where real friendships are made." -Paul Frommer

AvatarMeet | Learn Na'vi Forum | Learn Na'vi Wiki | Na'viteri

LearnNavi