UNojuku
UNojuku (onenombolo -90377 ) ungumzulane oyisichwe ongaphandle kzungezohlelo lweLanga, ozungeza iLanga ukude kakhulu ngale kozungezo lukaNolundwa. Wavubukulwa ngowezi-2003, futhi ucishe ube amakhilomitha ayi-1,000. ububanzi. Ukuhlaziywa kwenhlolakukhanya kwembule ukuthi ubuso bawo buyingxube yeqhwa eliqinile lamanzi, umCalahle ontuhlambili, ne -ethane, kanye nezindawo ezigcwele inzika yama-tholins anombala obomvu ezivela kujawani (-methane), ukwakheka kwevanga okufana nobuso bezinye izindikimba ezingale kukaNolundwa. [1] UNojuku akulindelekile ukuthi ibe nomoyambulunga omkhulu. [2] Ngaphakathi kokungaqiniseki, uxhunywe noNomadwala kumhlozatshe njengomzulane osichwe omkhulu kunayo yonke okungaziwa ukuthi unenyanga . Ngenxa yokuntula kwawo izinyanga ezaziwayo, isisndo kanye nobuluthe bukaNojuku abaziwa. [3]
- ↑ Emery, J. P.; Wong, I.; Brunetto, R.; Cook, J. C.; Pinilla-Alonso, N.; Stansberry, J. A.; Holler, B. J.; Grundy, W. M.; Protopapa, S. (15 May 2024). "A tale of 3 dwarf planets: Ices and organics on Sedna, Gonggong, and Quaoar from JWST spectroscopy". Icarus. 414. arXiv:2309.15230. Bibcode:2024Icar..41416017E. doi:10.1016/j.icarus.2024.116017. ISSN 0019-1035.
Spectra of all three objects show steep red spectral slopes and strong, broad absorptions between 2.7 and 3.6 μm indicative of complex organic molecules [...] These differences of Sedna, Gonggong, and Quaoar from the smaller KBO population supports the inference of different evolutionary history based on their size.
- ↑ Emery, J. P.; Wong, I.; Brunetto, R.; Cook, J. C.; Pinilla-Alonso, N.; Stansberry, J. A.; Holler, B. J.; Grundy, W. M.; Protopapa, S. (15 May 2024). "A tale of 3 dwarf planets: Ices and organics on Sedna, Gonggong, and Quaoar from JWST spectroscopy". Icarus. 414. arXiv:2309.15230. Bibcode:2024Icar..41416017E. doi:10.1016/j.icarus.2024.116017. ISSN 0019-1035.
Sedna is not expected to support an atmosphere at its great distances
- ↑ Bettati, Amelia; Lunine, Jonathan (1 April 2025). "Atmospheric escape explains diverse surface compositions of Pluto vs Sedna". Icarus. 430. Bibcode:2025Icar..43016482B. doi:10.1016/j.icarus.2025.116482. ISSN 0019-1035.
...No moon has been detected around Sedna, so it is not yet possible to calculate its density