21 Persei
- Flamsteed:
- 21 Persei
- GCVS:
- LT Per
- SAO:
- 56031
- HR:
- 873
- HD:
- 18296
- DM:
- BD+31 509
- GC:
- 3544
- Right Ascention:
- 2h 57m 17.244s
- Declination:
- +31° 56' 3.02"
- Magnitude:
- 5.1 - 5.2
- Spectral Type:
- B9pSi
- Constellation:
- Perseus
This star is a Variable star.
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