20181+4044 CHR 96 Aa,Ab
20h 18m 06.99s +40° 43' 55.6" P.A. 151.00 sep 0.1 mag 6.60,6.80 Sp O9IV dist. 595.24 pc (1941.67 l.y.)
| Coord 2000 |
20181+4044 |
|
Discov num |
CHR 96 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 18 06.99 +40 43 55.6 |
|
| Date first |
1985 |
|
Date last |
2018 |
|
Obs |
31 |
|
| Pa first |
189 |
|
Pa last |
150.5 |
|
P.A. Now (θ) |
208.4° |
|
| Sep first |
0.0 |
|
Sep last |
0.067 |
|
Sep. Now (ρ) |
0.047" |
|
| Mag pri |
6.60 |
|
Mag sec |
6.80 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
O9IV (blue) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
|
|
| Pri motion dec |
-010 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20181+4044 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
49438 |
20 18 07 +40 43 56 |
CHR 96 Aa,Ab |
2018 |
31 |
151 |
0.1 |
6.60 |
6.80 |
0.20 |
Y |
<=== |
| Show |
HD 193322 |
49438 |
20 18 07 +40 43 56 |
STF 2666 AB |
2018 |
86 |
245 |
2.8 |
5.96 |
8.24 |
2.28 |
|
|
| Show |
|
49438 |
20 18 07 +40 43 56 |
STF 2666 AC |
2006 |
13 |
207 |
34.0 |
5.96 |
10.70 |
4.74 |
|
|
| Show |
|
49438 |
20 18 07 +40 43 56 |
TAR 5 AD |
2006 |
8 |
181 |
49.6 |
5.96 |
11.00 |
5.04 |
|
|
| Show |
|
|
20 18 06 +40 43 25 |
STF 2666 CD |
2018 |
13 |
142 |
24.1 |
10.70 |
11.00 |
0.30 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
49438 |
|
HIP |
100069 |
|
Tycho2 |
3155-02321-1 |
|
| Gaia DR2 |
2062360626011542272 |
|
HD |
193322 |
|
HR |
7767 |
|
ADS |
13672 |
|
| BD |
BD+40 4103 |
|
Distance |
595.24 |
|
Distance ly |
1941.67 |
|
ORBITAL ELEMENTS
| Period (P) | 35.2y | ± 1.45 |
Periastron (T) | 1994.84y | ± 1.69 |
Semi-major axis (a) | 54.5m | ± 3.7 |
| Eccentricity (e) | 0.489 | ± 0.081 |
Inclination (i) | 46.2° | ± 6.9 |
Longitude of periastron (ω) | 70.4° | ± 7.5 |
| Node (Ω) | 255.2° | ± 15 |
Notes | n | |
Reference | CIA2011b | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
75.8 |
0.050 |
| 2001 |
82.5 |
0.054 |
| 2002 |
88.3 |
0.058 |
| 2003 |
93.6 |
0.060 |
| 2004 |
98.5 |
0.062 |
| 2005 |
103.1 |
0.063 |
| 2006 |
107.7 |
0.064 |
| 2007 |
112.2 |
0.064 |
| 2008 |
116.7 |
0.064 |
| 2009 |
121.3 |
0.063 |
| 2010 |
125.9 |
0.062 |
| 2011 |
130.7 |
0.061 |
| 2012 |
135.7 |
0.060 |
| 2013 |
140.9 |
0.059 |
| 2014 |
146.3 |
0.057 |
| 2015 |
152.0 |
0.056 |
| 2016 |
158.0 |
0.055 |
| 2017 |
164.3 |
0.053 |
| 2018 |
170.9 |
0.052 |
| 2019 |
177.8 |
0.051 |
| 2020 |
185.0 |
0.050 |
| 2021 |
192.5 |
0.049 |
| 2022 |
200.3 |
0.048 |
| 2023 |
208.4 |
0.047 |
| 2024 |
217.0 |
0.046 |
| 2025 |
226.1 |
0.044 |
| 2026 |
236.0 |
0.042 |
| 2027 |
247.4 |
0.038 |
| 2028 |
261.6 |
0.033 |
| 2029 |
282.1 |
0.027 |
| 2030 |
316.2 |
0.021 |
|
|
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 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 20181+4044 |
| coord_arcsec_2000 | 201806.99+404355.6 |
| Period (P) | 312.4d | |
Periastron (T) | 50123.5d (1996.109y) | |
Semi-major axis (a) | 3.9m | ± 1.2 |
| Eccentricity (e) | 0 | |
Inclination (i) | 51° | ± 34 |
Longitude of periastron (ω) | 180° | |
| Node (Ω) | 25° | ± 19 |
Notes | n | |
Reference | CIA2011b | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 8 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
36.4 |
0.004 |
| 2001-01-01 |
97.2 |
0.003 |
| 2002-01-01 |
176.7 |
0.003 |
| 2003-01-01 |
218.2 |
0.004 |
| 2004-01-01 |
281.3 |
0.002 |
| 2005-01-01 |
359.0 |
0.003 |
| 2006-01-01 |
40.0 |
0.004 |
| 2007-01-01 |
105.4 |
0.002 |
| 2008-01-01 |
181.1 |
0.003 |
| 2009-01-01 |
221.9 |
0.004 |
| 2010-01-01 |
289.7 |
0.002 |
| 2011-01-01 |
3.2 |
0.004 |
| 2012-01-01 |
43.8 |
0.004 |
| 2013-01-01 |
113.9 |
0.002 |
| 2014-01-01 |
185.2 |
0.004 |
| 2015-01-01 |
225.8 |
0.004 |
| 2016-01-01 |
298.2 |
0.002 |
| 2017-01-01 |
7.1 |
0.004 |
| 2018-01-01 |
47.8 |
0.004 |
| 2019-01-01 |
122.4 |
0.002 |
| 2020-01-01 |
189.0 |
0.004 |
| 2021-01-01 |
229.9 |
0.003 |
| 2022-01-01 |
306.6 |
0.002 |
| 2023-01-01 |
10.9 |
0.004 |
| 2024-01-01 |
52.1 |
0.003 |
| 2025-01-01 |
130.7 |
0.003 |
| 2026-01-01 |
192.7 |
0.004 |
| 2027-01-01 |
234.4 |
0.003 |
| 2028-01-01 |
314.7 |
0.003 |
| 2029-01-01 |
14.5 |
0.004 |
| 2030-01-01 |
56.7 |
0.003 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
