Coord 2000 | 19559+2500 |
Discov num | COU1037 |
Comp | Coord arcsec 2000 | 19 55 53.36 +25 00 09.4 |
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Date first | 1973 |
Date last | 2008 |
Obs | 7 |
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Pa first | 155 |
Pa last | 161 |
P.A. Now (θ) | 140.1° |
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Sep first | 0.2 |
Sep last | 0.1 |
Sep. Now (ρ) | 0.1" |
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Mag pri | 9.80 |
Mag sec | 10.70 |
delta mag (ΔM) | 0.9 |
Spectral class | G0+G5 (yellow/yellow) |
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Pri motion ra | +026 |
Sec motion ra | |||||||||
Pri motion dec | +019 |
Sec motion dec | |||||||||
Notes |
Precise pa | 160.9 |
Precise sep | 0.101 |
Constellation | Vulpecula |
SAO | 87944 |
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Tycho2 | 2144-00996-1 |
Gaia DR2 | 17414000384 |
HD | 339227 |
last precise pa | 160.9 |
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last precise sep | 0.101 |
Period (P) | 39y | ± 0.4 | Periastron (T) | 2001.45y | ± 0.1 | Semi-major axis (a) | 0.157a | ± 0.01 |
Eccentricity (e) | 0.292 | ± 0.012 | Inclination (i) | 99° | ± 3.5 | Longitude of periastron (ω) | 245.8° | ± 8 |
Node (Ω) | 155.7° | ± 4 | Note | Grade | 4 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2007 |
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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![]() Measures: green=micrometric, blue=interferometric, purple=photographic |
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coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
19559+2500 | COU1037 | 1992 | 5 | 176 | 0.1 | 10.30 | 10.30 | G0 | O | 195553.36+250009.4 | |
19559+2500 | COU1037 | 2007 | 6 | 159 | 0.1 | 9.80 | 10.70 | G0 G5 | NOD | 195553.36+250009.4 | |
19559+2500 | COU1037 | 2008 | 7 | 161 | 0.1 | 9.80 | 10.70 | G0 G5 | NOD | 195553.36+250009.4 |