| Coord 2000 | 20124+3804 |
Discov num | SEI1000 |
Comp | Coord arcsec 2000 | 20 12 23.20 +38 03 50.3 |
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| Date first | 1896 |
Date last | 2015 |
Obs | 14 |
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| Pa first | 150 |
Pa last | 145 |
P.A. Now (θ) | 145° |
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| Sep first | 19.3 |
Sep last | 19.1 |
Sep. Now (ρ) | 19.1" |
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| Mag pri | 9.72 |
Mag sec | 11.40 |
delta mag (ΔM) | 1.68 |
Spectral class | B2III: (blue-white) |
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| Pri motion ra | -004 |
Sec motion ra | +003 |
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| Pri motion dec | -006 |
Sec motion dec | +001 |
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| Notes | |||||||||||
| Precise pa | 144.7 |
Precise sep | 19.054 |
Constellation | Cygnus |
Tycho2 | 3151-02631-1 |
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| Gaia DR2 | 2061666013858471296 |
HD | 228289 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20124+3804 | SEI1000 | 1998 | 6 | 145 | 19.1 | 9.72 | 11.40 | B2III: | D | 201223.20+380350.3 | |
| 20124+3804 | SEI1000 | 2010 | 7 | 145 | 19.1 | 9.72 | 11.40 | B2III: | D | 201223.20+380350.3 | |
| 20124+3804 | SEI1000 | 2015 | 10 | 145 | 19.1 | 9.72 | 11.40 | B2III: | 201223.20+380350.3 |