praakrutik upagrah

hamaare saur mandal ke kuchh chandrama, jinmein se ek (shani ke chandrama, taaitan) itna bada hai ke usaka apna vaayu mandal hai - aakaaron ki tulana ke liye pruthvi bhi dikhaai gayi hai

praakrutik upagrah ya chandrama aisi khagoleeya vastu ko kaha jaata hai jo kisi grah, kshudragrah ya anya vastu ke ird-gird parikrama karta ho. July 2009 tak hamaare saur mandal mein 336 vastuon ko is shreni mein paaya gaya tha, jismein se 168 grahon ki, 6 baune grahon ki, 104 kshudragrahon ki aur 58 varun (naiptyoon) se aage pai jaane waali badi vastuon ki parikrama kar rahe the. kreeb 150 atirikt vastueain shani ke upagrahi chhallon mein bhi dekhi gayi hain lekin yeh theek se andaaja naheen lag paaya hai ke ve shani ki upagrahon ki tarah parikrama kar rahi hain ya naheen. hamaare saur mandal se baahar mile grahon ke ird-gird abhi koi upagrah naheen mila hai lekin vaigyaaniko ka vishvaas hai ke aise upagrah bhi badi sankhya mein zaroor maujood honge.

jo upagrah bade hote hain ve apne adhik gurutvaakarshan ki vajah se andar khichkar gol akaar ke ho jaate hain, jabki chhote chandrama tedhe-medhe bhi hote hain (jaise mangal ke upagrah - fobas aur daaimas).

sauramandal ke praakrutik upagrah

ausat
vyaas
(kimi)
grahon ke upagrah vaaman grahon ke upagrah anya kshudragrahon
ke
upagrah
tulana ke liye
gair-upagrah
pruthvi mangal bruhaspati shani yoorenas nepchyoon plooto haaumeya eris
4,000–6,000 genimed
kailisto
taaitan budh
3,000–4,000 chandrama aayo
yooropa
2,000–3,000 traaitan eris
plooto
1,000–2,000 riya
aaaipits
daayoni
tethis
taaiteniya
oberaun
ambriyl
eriyl
shairan maakemaake
haaumeya
90377 sedana
2007 OR10
500–1,000 Enceladus Dysnomia Ceres, Salacia
Orcus, Quaoar
2 Pallas, 4 Vesta
many more TNOs
250–500 Mimas
Hyperion
Miranda Proteus
Nereid
Hiʻaiaka Orcus I Vanth 10 Hygiea
704 Interamnia
87 Sylvia
and many others
100–250 Amalthea
Himalia
Thebe
Phoebe
Janus
Epimetheus
Sycorax
Puck
Portia
Larissa
Galatea
Despina
Namaka S/2005 (82075) 1
Sila–Nunam I
Salacia I Actaea
Ceto I Phorcys
Patroclus I Menoetius
~21 more moons of TNOs
3 Juno
1992 QB1
5 Astraea
42355 Typhon
and many others
50–100 Elara
Pasiphaë
Prometheus
Pandora
Caliban
Juliet
Belinda
Cressida
Rosalind
Desdemona
Bianca
Thalassa
Halimede
Neso
Naiad
Hydra
Nix
Quaoar I Weywot
90 Antiope I
Typhon I Echidna
Logos I Zoe
5 more moons of TNOs
90 Antiope
58534 Logos
253 Mathilde
and many others
25–50 Carme
Metis
Sinope
Lysithea
Ananke
Siarnaq
Helene
Albiorix
Atlas
Pan
Ophelia
Cordelia
Setebos
Prospero
Perdita
Stephano
Sao
Laomedeia
Psamathe
22 Kalliope I Linus 1036 Ganymed
243 Ida
and many others
10–25 Phobos
Deimos
Leda
Adrastea
Telesto
Paaliaq
Calypso
Ymir
Kiviuq
Tarvos
Ijiraq
Erriapus
Mab
Cupid
Francisco
Ferdinand
Margaret
Trinculo
P4
P5
762 Pulcova I
Sylvia I Romulus
624 Hektor I
Eugenia I Petit-Prince
121 Hermione I
283 Emma I
1313 Berna I
107 Camilla I
433 Eros
1313 Berna
and many others
< 10 51 moons 36 moons Sylvia II Remus
Ida I Dactyl
and many others
many

inhein bhi dekhiye