| Coord 2000 | 20089+3531 |
Discov num | SEI 917 |
Comp | Coord arcsec 2000 | 20 08 53.54 +35 30 46.4 |
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| Date first | 1896 |
Date last | 2015 |
Obs | 9 |
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| Pa first | 339 |
Pa last | 338 |
P.A. Now (θ) | 338° |
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| Sep first | 28.0 |
Sep last | 28.4 |
Sep. Now (ρ) | 28.4" |
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| Mag pri | 8.42 |
Mag sec | 12.62 |
delta mag (ΔM) | 4.2 |
Spectral class | B0V (blue-white) |
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| Pri motion ra | -003 |
Sec motion ra | -003 |
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| Pri motion dec | -007 |
Sec motion dec | -006 |
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| Notes | |||||||||||
| Precise pa | 337.8 |
Precise sep | 28.389 |
Constellation | Cygnus |
SAO | 69501 |
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| Tycho2 | 2679-00893-1 |
Gaia DR2 | 2058845629092327040 |
HD | 191495 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20089+3531 | SEI 917 | 1998 | 3 | 338 | 28.4 | 8.42 | 11.60 | B0V | D | 200853.54+353046.4 | |
| 20089+3531 | SEI 917 | 2002 | 4 | 338 | 28.5 | 8.42 | 11.60 | B0V | D | 200853.54+353046.4 | |
| 20089+3531 | SEI 917 | 2010 | 5 | 338 | 28.4 | 8.42 | 12.62 | B0V | 200853.54+353046.4 | ||
| 20089+3531 | SEI 917 | 2015 | 5 | 338 | 28.4 | 8.42 | 12.62 | B0V | 200853.54+353046.4 |