| Coord 2000 | 20129+3429 |
Discov num | AG 250 |
Comp | Coord arcsec 2000 | 20 12 55.97 +34 28 31.6 |
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| Date first | 1896 |
Date last | 2018 |
Obs | 20 |
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| Pa first | 52 |
Pa last | 53 |
P.A. Now (θ) | 53° |
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| Sep first | 8.9 |
Sep last | 8.9 |
Sep. Now (ρ) | 8.9" |
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| Mag pri | 8.45 |
Mag sec | 10.20 |
delta mag (ΔM) | 1.75 |
Spectral class | A2V (white) |
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| Pri motion ra | +002 |
Sec motion ra | -004 |
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| Pri motion dec | -017 |
Sec motion dec | -017 |
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| Notes | N
(See Notes) |
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| Precise pa | 53.1 |
Precise sep | 8.889 |
Constellation | Cygnus |
SAO | 69614 |
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| Tycho2 | 2679-01114-1 |
Gaia DR2 | 2055726550809580288 |
HD | 192284 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20129+3429 | AG 250 | 2006 | 14 | 51 | 8.7 | 8.45 | 10.20 | A2V | D | 201255.97+342831.6 | |
| 20129+3429 | AG 250 | 2015 | 16 | 53 | 8.7 | 8.45 | 10.20 | A2V | N | 201255.97+342831.6 | |
| 20129+3429 | AG 250 | 2018 | 20 | 53 | 8.9 | 8.45 | 10.20 | A2V | N | 201255.97+342831.6 |