Hái-ông-chheⁿ

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Voyager 2 hip--tio̍h ê Hái-ông-chheⁿ

Hái-ông-chheⁿ (Neptune) sī lī Ji̍t-thaû tē 8 hn̄g ê he̍k-chheⁿ, m̄-koh sam-sî ē chaú kah tē 9 hn̄g khì, in-ūi Mê-ông-chheⁿ ê kúi-tō ū khah te̍k-sû. I mā si Thài-iông-hē siōng goā-khaú, siōng sè lia̍p ê khì-thé toā he̍k-chheⁿ (gas giant). Sè bóng sè, Hái-ông-chheⁿ ê chit-liōng khah chē Thiⁿ-ông-chheⁿ, in-ūi tāng-le̍k-tiûⁿ (gravitational field) tì-sú i ê bi̍t-tō͘ ū khah koân.

Hái-ông-chheⁿ ê miâ-jī sī toè Lô-má hái-sîn lâi--ê. Tāi-piáu hû-hō sī hái-sîn ê bú-khì saⁿ-chhe-kek (trident) . 1846 nî 9 goe̍h 23 hông hoat-hiān. 1989 nî 8 goe̍h 25, Voyager 2 ùi i piⁿ--á poe koè.

Chit lia̍p nâ-sek ê he̍k-chheⁿ chhan-chhiūⁿ Thó͘-chheⁿ mā ū khoân, khah bô ióng-kò͘ tō sī. Voyager 2 hoat-kak chiah-ê khoân ê kiat-kò͘ mā kài oân-chéng. Hái-ông-chheⁿ téng-koân ê hong-sok ē-tit kaù kah 2,000 km/h. Khong-khì lāi-té ū H₂, (hydrogen), He₂ (helium), kap CH₄ (methane, chiau-khì) hō͘ i khoàⁿ--khí-laî nâ-nâ. 1989 nî Voyager 2 poe koè ê sî khoàⁿ tio̍h i ê lâm-poàⁿ-kiû ū 1 ê Toā-o͘-tiám (Great Dark Spot), bē-su Bo̍k-ông-chheⁿ ê Toā-âng-tiám, m̄-koh boé-chhiú soah bô--khì. Hái-ông-chheⁿ ū 13 lia̍p oē-chheⁿ, lāi-té 5 lia̍p iáu ū koá cheng-gī. Siōng toā lia̍p ê oē-chheⁿ Triton chin sim-sek, tò-thaû-hiòng ê kúi-tō, Thài-iông-hē siōng-kài léng (38K) ê chheⁿ-thé, N₂ (nitrogen, chit-sò͘) kap CH₄ kò͘-sêng ê tāi-khì-chân po̍h-po̍h-po̍h (14 microbar).

Goā-pō͘ liân-kiat[siu-kái]

Thài-iông-hē
Eight Planets.png
Chheⁿ: Ji̍t-thaû
He̍k-chheⁿ: Chúi-chheⁿ | Kim-chheⁿ | Tē-kiû | Hoé-chheⁿ | Bo̍k-chheⁿ | Thó͘-chheⁿ | Thiⁿ-ông-chheⁿ | Hái-ông-chheⁿ
É-he̍k-chheⁿ: Ceres | Mê-ông-chheⁿ | Haumea | Makemake | Eris
Sió-bu̍t-thé: Sió-he̍k-chheⁿ | Hái-ông-chheⁿ goā chheⁿ-thé | Tn̂g-boé-chheⁿ
Oē-chheⁿ: Goe̍h-niû | Hoé-chheⁿ ê | Bo̍k-chheⁿ ê | Thó͘-chheⁿ ê | Thiⁿ-ông-chheⁿ ê | Hái-ông-chheⁿ ê
Tīn: Sió-he̍k-chheⁿ-toà | Kuiper-toà | Sàn-loān îⁿ-poâⁿ | Oort-hûn
Chhiáⁿ chham-khó thian-bûn bu̍t-thé, thài-iông-hē ê chheⁿ-thé lia̍t-toaⁿ, chiàu poàⁿ-kèng pâi iah sī chiàu chit-liōng pâi