varun ke praakrutik upagrah

vauyejar dviteeya yaan dvaara li gayi varun aur uske sab se bade upagrah, traaitan, ki tasveer

hamaare saur mandal ke aathave grah varun (naiptayoon) ke 13 gyaat praakrutik upagrah hain.[1] inmein se traaitan baaki sabse bahut bada hai. agar varun ke saare chandramaaon ka kul dravyamaan dekha jaae to usaka 99.5% is ek upagrah mein nihit hai.[2] traaitan varun ka ikalauta upagrah hai jo apne gurutvaakarshak khichaav se apna akaar gol kar chuka hai. baaki sabhi chandramaaon ke akaar bedhange hain. traaitan ka apna patala vaayumandal bhi hai, jismein naaitrojan ke saath-saath thodi maatra mein methane aur kaarban monooksaaid bhi maujood hain. traaitan ki satah par ausat taapamaan -235.2° seinteegred hai. 1986 mein paas se gujrate hue vauyejar dviteeya yaan ne kuchh aisi tasveerein li jinmein traaitan ke vaataavaran mein baadalon jaisi cheejein nazar I theen. traaitan ki varun ki ird-gird parikrama ki kaksha thodi ajeeb hai jis se vaigyaanik anumaan lagte hain ke traaitan varun se door kaheen aur bana tha aur bhatakate hue varun ke paas ja pahuncha jahaaain vah varun ke tagade gurutvaakarshan ki pakad mein aa gaya aur tab se usaki parikrama kar raha hai.

anukram

saare gyaat upagrahon ka byora

kram
[note 1]
soochak sankhya
[note 2]
angreji naam
naam
chitr vyaas
(kimi)[note 3]
dravyamaan
(×a1016 kilogram)
kaksha ka sabse bada vyaas
(kimi)
parikrama ka antaraal
(din)
kaksha ka kon
(degree)
kaksheeya vakrata nirdeshaank

khoj ka varsh

1 varun III Naiad naiad
A smeared white object elongated from the bottom-left to top-right can be seen in the center.
66
(96 × 60 × 52)
19 48,227 0.294 4.691 0.0003 1989
2 varun IV Thalassa thalaisa
A smeared white object elongated from the bottom-left to top-right can be seen in the center.
82
(108 × 100 × 52)
35 50,074 0.311 0.135 0.0002 1989
3 varun V Despina daspeena
A white oval shaped object somewhat elongated horizontally is seen in the center. There are a few small dark spots on its surface.
150
(180 × 148 × 128)
210 52,526 0.335 0.068 0.0002 1989
4 varun VI Galatea gailaatiaa
A small white object elongated from the bottom-left to top-right can be seen in the center.
176
(204 × 184 × 144)
212 61,953 0.429 0.034 0.0001 1989
5 varun VII Larissa larisa
An irregularly shaped grey object slightly elongated horizontally occupies almost the whole image. Its surface shows a number of dark and white spots.
194
(216 × 204 × 168)
460 73,548 0.555 0.205 0.0014 1981
6 varun VIII Proteus protias
A conically shaped object is seen half-illuminated from the right. The cone axis looks towards the observer. The outline of the object is a rectangle with rounded corners. The surface is rough with a few large depressions.
420
(436 × 416 × 402)
4,400 117,646 1.122 0.075 0.0005 1989
7 varun I Triton traaitan
A large spherical object is half-illuminated from the bottom-left. The south pole faces to the light source. Around it in the bottom-left part of the body there is a large white area with a few dozens dark streaks elongated in the pole to equator direction. This polar cap has a slight red tinge. The equatorial region is darker with a tint of cyan. Its surface is rough with a number of craters and intersecting lineaments.
2,705.2 ± 4.8
(2,709 × 2,706 × 2,705)
2,140,800
± 5200
354,759 5.877 156.865 0.0000 1846
8 varun II Nereid niyreed
A small white smeared body is seen in center.
340 ± 50 2,700 5,513,818 360.136 7.090 0.7507 1949
9 varun IX Halimede hailimeedi ~62 16 16,611,000 1,879.08 112.712 0.2646 2002
10 varun XI Sao seo ~44 6 22,228,000 2,912.72 53.483 0.1365 2002
11 varun XII Laomedeia leomadeeaa ~42 5 23,567,000 3,171.33 37.874 0.3969 2002
12 varun X Psamathe saimaathi ~40 4 48,096,000 9,074.30 126.312 0.3809 2003
13 varun XIII Neso neeso ~60 15 49,285,000 9,740.73 136.439 0.5714 2002

inhein bhi dekhein

tippani

  1. kram batalaata hai ke anya upagrahon ke mukaabale mein is upagrah ka varun ke paas kaunasa sthaan hai
  2. upagrah ka apni khoj ke anusaar diya gaya roman sankhyaank
  3. agar vyaas ek se adhik sankhyaaon ke saath likha gaya hai, jaise ki "60×aa40×aa34" to iska arth hai ke yeh upagrah gol naheen hai aur iski lambaai, chaudaai, gaharaai di ja rahi hai

sandarbh

  1. Williams, David R. (September 1, 2004). "Neptune Fact Sheet". NASA. http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html. abhigman tithi: August 14, 2007.
  2. traaitan ka dravyamaan: 2.14×a1022 kilo. baaki 12 gyaat upagrahon ka samoocha dravyamaan: 7.53×a1019 kilo, ya 0.35 pratishat. upagrahi chhallon ka dravyamaan inki tulana mein na ke baraabar hai.