| Coord 2000 | 20289+5939 |
Discov num | HJ 2978 |
Comp | Coord arcsec 2000 | 20 28 56.14 +59 38 50.1 |
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| Date first | 1831 |
Date last | 2015 |
Obs | 17 |
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| Pa first | 275 |
Pa last | 277 |
P.A. Now (θ) | 277° |
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| Sep first | 10.0 |
Sep last | 14.1 |
Sep. Now (ρ) | 14.1" |
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| Mag pri | 10.29 |
Mag sec | 11.07 |
delta mag (ΔM) | 0.78 |
Spectral class | |||||
| Pri motion ra | +010 |
Sec motion ra | +011 |
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| Pri motion dec | +019 |
Sec motion dec | +020 |
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| Notes | |||||||||||
| Precise pa | 276.9 |
Precise sep | 14.139 |
Constellation | Cygnus |
Tycho2 | 3962-01342-1 |
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| Gaia DR2 | 83677996416 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20289+5939 | HJ 2978 | 2002 | 9 | 276 | 14.2 | 10.29 | 11.07 | D | 202856.14+593850.1 | ||
| 20289+5939 | HJ 2978 | 2003 | 10 | 277 | 14.1 | 10.29 | 11.07 | D | 202856.14+593850.1 | ||
| 20289+5939 | HJ 2978 | 2010 | 11 | 277 | 14.0 | 10.29 | 11.07 | 202856.14+593850.1 | |||
| 20289+5939 | HJ 2978 | 2015 | 12 | 277 | 14.1 | 10.29 | 11.07 | 202856.14+593850.1 |