| Coord 2000 | 20189+3945 |
Discov num | COU2537 |
Comp | Coord arcsec 2000 | 20 18 53.24 +39 45 09.5 |
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| Date first | 1989 |
Date last | 2008 |
Obs | 3 |
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| Pa first | 295 |
Pa last | 294 |
P.A. Now (θ) | 294° |
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| Sep first | 0.5 |
Sep last | 0.8 |
Sep. Now (ρ) | 0.8" |
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| Mag pri | 10.05 |
Mag sec | 10.29 |
delta mag (ΔM) | 0.24 |
Spectral class | B1III (blue-white) |
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| Pri motion ra | -002 |
Sec motion ra | -002 |
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| Pri motion dec | -004 |
Sec motion dec | -004 |
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| Notes | |||||||||||
| Precise pa | 293.7 |
Precise sep | 0.779 |
Constellation | Cygnus |
SAO | 69817 |
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| Tycho2 | 3155-00048-1 |
Gaia DR2 | 2062237411992140800 |
HD | 228875 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20189+3945 | COU2537 | 1991 | 2 | 310 | 0.4 | 10.05 | 10.29 | B1III | 201853.24+394509.5 | ||
| 20189+3945 | COU2537 | 2008 | 3 | 294 | 0.8 | 10.05 | 10.29 | B1III | 201853.24+394509.5 |