| Coord 2000 | 19559+4912 |
Discov num | HU 688 |
Comp | Coord arcsec 2000 | 19 55 54.46 +49 11 43.6 |
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| Date first | 1904 |
Date last | 2014 |
Obs | 6 |
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| Pa first | 291 |
Pa last | 290 |
P.A. Now (θ) | 290° |
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| Sep first | 4.1 |
Sep last | 3.4 |
Sep. Now (ρ) | 3.4" |
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| Mag pri | 8.07 |
Mag sec | 11.77 |
delta mag (ΔM) | 3.7 |
Spectral class | B9 (blue-white) |
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| Pri motion ra | +002 |
Sec motion ra | -004 |
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| Pri motion dec | -011 |
Sec motion dec | -012 |
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| Notes | |||||||||||
| Precise pa | 289.8 |
Precise sep | 3.381 |
Constellation | Cygnus |
SAO | 48994 |
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| HIP | 98072 |
Tycho2 | 3566-01514-1 |
HD | 189065 |
BD | BD+48 2984 |
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| Distance | 591.72 |
Distance ly | 1930.19 |
last precise pa | 289.8 |
last precise sep | 3.381 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 19559+4912 | HU 688 | 1991 | 5 | 290 | 4.0 | 8.07 | 11.77 | B9 | 195554.46+491143.6 | ||
| 19559+4912 | HU 688 | 2014 | 6 | 290 | 3.4 | 8.07 | 11.77 | B9 | 195554.46+491143.6 |