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NGC 7840 (NGC: 7840) sī tsi̍t-ê Bô-póng lô-suân sing-hē , khiā-tī siang-hî-tsō lāi-té[1], mā-sī NGC then-thé-pió lāi-té tsú-āu tsi̍t-ê then-thé.
NGC 7840 | |
---|---|
Sloan sòo-kì sûn-then (SDSS) ê NGC 7840 tôo-phìñ | |
Observation data (J2000 epoch) | |
Constellation | Siang-hî-chō[1][2] |
Right ascension | 00h 07m 08.79s[3] |
Declination | +08° 22′ 59.6″[3] |
Apparent magnitude (V) | 15[1] |
Characteristics | |
Type | S?[1] |
Apparent size (V) | 0.676′ × 0.457′ |
Other designations | |
NGC 7840, PGC 1345780[3] |
Uì tē-kiû piáu-bīn lâi kuan-tshat , NGC 7840 tē-21 sè-kí khai-sí ū 15.5 Sing-tíng (thian-bûn-ha̍k) .[4] Ū tsi̍t-tsióng kuan-tshat tsí-lâm ū-lâi kiàn-gī tsì-tsió ē-tàng sú-iōng 300 mm khóng-kìng ê tiàu-kiañ lâi tsìn-hîng kuan-tshik .[4]
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