Neptune, wanda yake kusa da tagwayen Uranus a cikin girma da abun da ke ciki, har yanzu ba a fahimta ba. Neptune, wanda yake kusa da tagwayen Uranus a cikin girma da abun da ke ciki, yana haskakawa sau 2.61 a cikin sararin samaniya kamar yadda yake karɓa daga Rana, amma Uranus yana haskakawa da wuya wani zafi mai yawa a kowane lokaci. Jimlar ƙarfin da Uranus ke haskakawa a cikin nisa infrared (watau zafi) ɓangare na bakan shine 1.06 ± 0.08 sau da makamashin hasken rana da aka sha a cikin yanayin sa. Hasken zafi na Uranus shine kawai 0.042 ± 0.047 W / m2, wanda ya fi ƙasa da zafin jiki na duniya na kimanin 0.075 W / m2.
shine 1.06±0.08 sau da hasken rana