ʻOumuamua
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ʻOumuamua (Hawaii-gí: ʻOumuamua) sī tē-it ê thong-kuè thài-iông-hē thàm-tshik kàu ê sing-tsè bu̍t-thé.[21] ʻOumuamua tsìng-sik bīng-miâ tsò 1I/2017 U1, iû Robert Weryk [en] tī 2017-nî 10-gue̍h 19-ji̍t teh Hawaii Haleakalā Thian-bûn-tâi [en] sú-iōng Pan-STARRS tiàu-kiànn sóo huat-hiān, tāi-iok tī 9-gue̍h 9-ji̍t ʻOumuamua king-kuè kū-lî thài-iông tsuè-kīn ê tiám 40-kang liáu-āu. Thâu-tsi̍t-pái kuan-tshik kàu ʻOumuamua ê sî-tsūn, ʻOumuamua kū-lî tē-kiû tāi-iok 3300-bān [en] km (2100-bān ing-lí; 0.22 thian-bûn tan-uī; tāi-iok sī tē-kiû kàu gua̍t-kiû kū-lî ê 85-puē), lî-tshiánn í-king uán-lî thài-iông.
Quick Facts Hoat-kiàn, Hoat-kiàn-chiá ...
ʻOumuamua tī 2017 10-gue̍h 28[lower-alpha 1] | |
Hoat-kiàn [2][3] | |
---|---|
Hoat-kiàn-chiá | Robert Weryk sú-iōng Pan-STARRS 1 |
Hoat-kiàn tē-tiám | Haleakalā Obs., Hawaii |
Hoat-kiàn ji̍t-chí | 19 October 2017 |
Miâ-hō | |
MPC miâ-hō | 1I/2017 U1[4] |
Ho͘-im | /oʊˌmuːəˈmuːə/, Hawaii-gí: [ʔowˈmuwəˈmuwə] (thiaⁿ (?)) |
Hō-miâ iû-lâi | Hawaiian term for scout[4] |
Pia̍t-miâ | |
Minor planet category |
Interstellar object[4] Hyperbolic asteroid[7][8][9] |
Kúi-tō sèng-chit [7] | |
Goân-kî 2017 11-gue̍h 23 (JD 2458080.5) | |
Observation arc | 80 kang |
Kīn-ji̍t-tiám | 7010382844886780611♠0.255916±0.000007 AU |
2988809666629108390♠−1.2723±0.0001 AU[lower-alpha 2] | |
Lî-sim-lu̍t | 7000120113000000000♠1.20113±0.00002 |
Pêng-kin kúi-tō sok-le̍k |
7004263300000000000♠26.33±0.01 km/s (interstellar)[10] 5.55 AU/year |
Pêng-kin kīn-tiám-kak | 51.158° |
Mean motion | 0° 41m 12.12s / day |
Khi-pêng | 122.74° |
Seng-kau-tiám ê keng-tō͘ | 24.597° |
Hn̄g-tiám ê ín-sò͘ | 241.811° |
Earth MOID | 0.0958 AU ·37.3 LD |
Jupiter MOID | 1.454 AU |
Physical characteristics | |
Dimensions |
7002100000000000000♠100–1000 m long[11][12][13] 7002230000000000000♠230 m × 35 m × 35 m[14][15] (est. at albedo 0.10)[14][15] |
Rotation period |
Tumbling (non-principal axis rotation)[16] Reported values include: |
Geometric albedo | |
Spectral type | |
Bêng-hián-tō͘ | 19.7 to >27.5[10][20][lower-alpha 3] |
7001220799999999999♠22.08±0.45[7] | |
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