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Bé-thâu seng-hûn (Hàn-jī: 馬頭星雲), mā kiò-chò Barnard 33, sī La̍h-hō͘-chō ê chi̍t ê ám-seng-hûn. I tiám tī IC 434 lāi-té, koh sī La̍h-hō͘-chō hun-chú-hûn ho̍k-ha̍p-thé ê chi̍t pō͘-hūn.[2]
Dark nebula | |
---|---|
diffuse | |
The Horsehead Nebula | |
Observation data: J2000.0 epoch | |
Right ascension | 05h 40m 59.0s |
Declination | −02° 27′ 30.0" |
Distance | ±54 1,375[1][note 1] ly (±17 422[1] pc) |
Apparent magnitude (V) | 6.8 |
Apparent dimensions (V) | 8 × 6 arcmins |
Constellation | Orion |
Physical characteristics | |
Radius | 3.5 ly |
Designations | Barnard 33, LDN 1630, IC 434 |
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