| Coord 2000 | 19404+3121 |
Discov num | SEI 657 |
Comp | AB |
Coord arcsec 2000 | 19 40 21.57 +31 21 26.4 |
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| Date first | 1893 |
Date last | 2017 |
Obs | 9 |
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| Pa first | 357 |
Pa last | 357 |
P.A. Now (θ) | 357° |
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| Sep first | 19.2 |
Sep last | 19.3 |
Sep. Now (ρ) | 19.3" |
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| Mag pri | 8.91 |
Mag sec | 11.01 |
delta mag (ΔM) | 2.1 |
Spectral class | F8V (yellow-white) |
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| Pri motion ra | -001 |
Sec motion ra | +001 |
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| Pri motion dec | -002 |
Sec motion dec | -001 |
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| Notes | |||||||||||
| Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 19404+3121 | COU1163 | Aa,Ab | 1974 | 2007 | 6 | 165 | 0.1 | 9.50 | 9.50 | 0.00 | ||||
| Show | 19404+3121 | SEI 657 | AB | 1893 | 2017 | 9 | 357 | 19.3 | 8.91 | 11.01 | 2.10 | <=== |
| Precise pa | 356.8 |
Precise sep | 19.313 |
Constellation | Cygnus |
SAO | 68670 |
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| Tycho2 | 2656-04841-1 |
Gaia DR2 | 89388971904 |
HD | 331099 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 19404+3121 | SEI 657 | AB | 2002 | 6 | 357 | 19.2 | 8.91 | 11.01 | D | 194021.57+312126.4 | |
| 19404+3121 | SEI 657 | AB | 2017 | 8 | 357 | 19.3 | 8.91 | 11.01 | F8V | 194021.57+312126.4 |