| Coord 2000 | 20315+5611 |
Discov num | HJ 1540 |
Comp | AB |
Coord arcsec 2000 | 20 31 29.57 +56 10 48.0 |
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| Date first | 1828 |
Date last | 2015 |
Obs | 11 |
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| Pa first | 346 |
Pa last | 346 |
P.A. Now (θ) | 346° |
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| Sep first | 15.0 |
Sep last | 22.7 |
Sep. Now (ρ) | 22.7" |
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| Mag pri | 8.52 |
Mag sec | 11.90 |
delta mag (ΔM) | 3.38 |
Spectral class | B5 (blue-white) |
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| Pri motion ra | -002 |
Sec motion ra | +002 |
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| Pri motion dec | -005 |
Sec motion dec | +010 |
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| Notes | |||||||||||
| Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 20315+5611 | HJ 1540 | AB | 1828 | 2015 | 11 | 346 | 22.7 | 8.52 | 11.90 | 3.38 | <=== | |||
| Show | 20315+5611 | HJ 1540 | AC | 1905 | 2015 | 9 | 130 | 40.7 | 8.52 | 13.48 | 4.96 |
| Precise pa | 346.3 |
Precise sep | 22.719 |
Constellation | Cygnus |
SAO | 32661 |
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| HIP | 101256 |
Tycho2 | 3954-00366-1 |
Gaia DR2 | 33896230144 |
HD | 239436 |
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| BD | BD+55 2417 |
Distance | 970.87 |
Distance ly | 3166.98 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20315+5611 | HJ 1540 | AB | 1999 | 3 | 346 | 23.0 | 8.80 | 11.90 | B5 | D | 203129.57+561048.0 |
| 20315+5611 | HJ 1540 | AB | 2003 | 5 | 346 | 22.7 | 8.80 | 11.90 | B5 | D | 203129.57+561048.0 |
| 20315+5611 | HJ 1540 | AB | 2013 | 6 | 346 | 22.6 | 8.52 | 11.90 | B5 | 203129.57+561048.0 | |
| 20315+5611 | HJ 1540 | AB | 2015 | 7 | 346 | 22.7 | 8.52 | 11.90 | B5 | 203129.57+561048.0 |