| Coord 2000 | 20339+4642 |
Discov num | HDS2940 |
Comp | Aa,Ab |
Coord arcsec 2000 | 20 33 54.84 +46 41 37.9 |
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| Date first | 1991 |
Date last | 2009 |
Obs | 8 |
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| Pa first | 56 |
Pa last | 46 |
P.A. Now (θ) | 46° |
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| Sep first | 0.3 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.3" |
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| Mag pri | 5.76 |
Mag sec | 9.48 |
delta mag (ΔM) | 3.72 |
Spectral class | B9sp... (blue-white) |
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| Pri motion ra | +010 |
Sec motion ra | |||||||||
| Pri motion dec | +002 |
Sec motion dec | |||||||||
| Notes | N
(See Notes) |
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| Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 49804 | 20339+4642 | HDS2940 | Aa,Ab | 1991 | 2009 | 8 | 46 | 0.3 | 5.76 | 9.48 | 3.72 | <=== | ||
| Show | V2015 Cyg | 49804 | 20339+4642 | BU 1489 | AB | 1893 | 2012 | 13 | 16 | 116.5 | 5.75 | 9.35 | 3.60 |
| Precise pa | 45.6 |
Precise sep | 0.279 |
Var name | V2015 Cyg |
Constellation | Cygnus |
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| SAO | 49804 |
HIP | 101475 |
Tycho2 | 3573-01361-1 |
Gaia DR2 | 98315555584 |
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| HD | 196178 |
HR | 7870 |
BD | BD+46 2977 |
Distance | 132.28 |
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| Distance ly | 431.5 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20339+4642 | HDS2940 | Aa,Ab | 1996 | 5 | 60 | 0.3 | 5.76 | 9.48 | B9sp... | D | 203354.84+464137.9 |
| 20339+4642 | HDS2940 | Aa,Ab | 2009 | 7 | 46 | 0.3 | 5.76 | 9.48 | B9sp... | N | 203354.84+464137.9 |