| Coord 2000 | 20306+3850 |
Discov num | SEI1144 |
Comp | Coord arcsec 2000 | 20 30 34.73 +38 50 12.8 |
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| Date first | 1895 |
Date last | 2015 |
Obs | 10 |
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| Pa first | 159 |
Pa last | 177 |
P.A. Now (θ) | 177° |
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| Sep first | 13.7 |
Sep last | 18.1 |
Sep. Now (ρ) | 18.1" |
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| Mag pri | 11.39 |
Mag sec | 13.00 |
delta mag (ΔM) | 1.61 |
Spectral class | |||||
| Pri motion ra | +004 |
Sec motion ra | -037 |
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| Pri motion dec | -010 |
Sec motion dec | -050 |
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| Notes | |||||||||||
| Precise pa | 177.3 |
Precise sep | 18.075 |
Constellation | Cygnus |
SAO | 70124 |
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| Tycho2 | 3153-00819-1 |
Gaia DR2 | 70956120960 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20306+3850 | SEI1144 | 1998 | 3 | 175 | 17.4 | 11.39 | 13.00 | D | 203034.73+385012.8 | ||
| 20306+3850 | SEI1144 | 2002 | 4 | 176 | 17.6 | 11.39 | 13.00 | D | 203034.73+385012.8 | ||
| 20306+3850 | SEI1144 | 2010 | 5 | 176 | 17.7 | 11.39 | 13.00 | 203034.73+385012.8 | |||
| 20306+3850 | SEI1144 | 2015 | 6 | 177 | 18.1 | 11.39 | 13.00 | 203034.73+385012.8 |