19083+5520 D 19 AB
19h 08m 20.20s +55° 19' 50.0" P.A. 345.00 sep 0.5 mag 7.67,9.51 Sp A5IV dist. 119.62 pc (390.2 l.y.)
| Coord 2000 |
19083+5520 |
|
Discov num |
D 19 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 08 20.20 +55 19 50.0 |
|
| Date first |
1874 |
|
Date last |
2016 |
|
Obs |
44 |
|
| Pa first |
20 |
|
Pa last |
344.5 |
|
P.A. Now (θ) |
344.5° |
|
| Sep first |
0.7 |
|
Sep last |
0.458 |
|
Sep. Now (ρ) |
0.458" |
|
| Mag pri |
7.67 |
|
Mag sec |
9.51 |
|
delta mag (ΔM) |
1.84 |
|
Spectral class |
A5IV (white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
|
|
| Pri motion dec |
+019 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
19083+5520 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
31417 |
19 08 20 +55 19 50 |
D 19 AB |
2016 |
44 |
345 |
0.5 |
7.67 |
9.51 |
1.84 |
Y |
<=== |
| Show |
HD 179142 |
31417 |
19 08 20 +55 19 50 |
STF 2479 AB,C |
2017 |
53 |
29 |
6.5 |
7.49 |
9.68 |
2.19 |
|
|
| Show |
|
31417 |
19 08 20 +55 19 50 |
GUI 22 AB,D |
2015 |
10 |
123 |
66.2 |
7.49 |
12.30 |
4.81 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
31417 |
|
HIP |
94000 |
|
Tycho2 |
3924-01546-1 |
|
| Gaia DR2 |
2141186886644505600 |
|
HD |
179142 |
|
GC |
26401 |
|
ADS |
12104 |
|
| BD |
BD+55 2152 |
|
Distance |
119.62 |
|
Distance ly |
390.2 |
|
ORBITAL ELEMENTS
| Period (P) | 2858y | |
Periastron (T) | 1903y | |
Semi-major axis (a) | 2.95a | |
| Eccentricity (e) | 0.73 | |
Inclination (i) | 100° | |
Longitude of periastron (ω) | 162° | |
| Node (Ω) | 190° | |
Notes | n | |
Reference | Hrt2013c | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
350.4 |
0.582 |
| 2001 |
350.0 |
0.576 |
| 2002 |
349.6 |
0.571 |
| 2003 |
349.2 |
0.565 |
| 2004 |
348.8 |
0.560 |
| 2005 |
348.4 |
0.555 |
| 2006 |
347.9 |
0.549 |
| 2007 |
347.5 |
0.544 |
| 2008 |
347.1 |
0.538 |
| 2009 |
346.6 |
0.533 |
| 2010 |
346.1 |
0.528 |
| 2011 |
345.7 |
0.522 |
| 2012 |
345.2 |
0.517 |
| 2013 |
344.7 |
0.511 |
| 2014 |
344.2 |
0.506 |
| 2015 |
343.7 |
0.501 |
| 2016 |
343.1 |
0.495 |
| 2017 |
342.6 |
0.490 |
| 2018 |
342.1 |
0.485 |
| 2019 |
341.5 |
0.479 |
| 2020 |
340.9 |
0.474 |
| 2021 |
340.3 |
0.469 |
| 2022 |
339.7 |
0.464 |
| 2023 |
339.1 |
0.458 |
| 2024 |
338.5 |
0.453 |
| 2025 |
337.9 |
0.448 |
| 2026 |
337.2 |
0.443 |
| 2027 |
336.5 |
0.438 |
| 2028 |
335.9 |
0.433 |
| 2029 |
335.2 |
0.428 |
| 2030 |
334.4 |
0.423 |
|
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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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