| Coord 2000 | 20308+3749 |
Discov num | SEI1147 |
Comp | AC |
Coord arcsec 2000 | 20 30 45.51 +37 48 58.8 |
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| Date first | 1895 |
Date last | 2015 |
Obs | 8 |
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| Pa first | 280 |
Pa last | 286 |
P.A. Now (θ) | 286° |
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| Sep first | 18.7 |
Sep last | 14.5 |
Sep. Now (ρ) | 14.5" |
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| Mag pri | 12.25 |
Mag sec | 12.53 |
delta mag (ΔM) | 0.28 |
Spectral class | |||||
| Pri motion ra | +003 |
Sec motion ra | +035 |
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| Pri motion dec | -001 |
Sec motion dec | +010 |
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| Notes | B
(Blue magnitudes) |
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| Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 20308+3749 | SEI1146 | AB | 1895 | 2015 | 9 | 42 | 10.2 | 12.25 | 12.27 | 0.02 | ||||
| Show | 20308+3749 | SEI1147 | AC | 1895 | 2015 | 8 | 286 | 14.5 | 12.25 | 12.53 | 0.28 | <=== |
| Precise pa | 285.6 |
Precise sep | 14.462 |
Constellation | Cygnus |
Tycho2 | 3153-00884-1 |
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| Gaia DR2 | 82251302656 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20308+3749 | SEI1147 | AC | 1998 | 3 | 284 | 14.9 | 12.25 | 12.53 | DB | 203045.51+374858.8 | |
| 20308+3749 | SEI1147 | AC | 2002 | 4 | 285 | 14.8 | 12.25 | 12.53 | DB | 203045.51+374858.8 | |
| 20308+3749 | SEI1147 | AC | 2015 | 5 | 286 | 14.5 | 12.25 | 12.53 | B | 203045.51+374858.8 |