20410+3905 MCA 62 Aa,Ab
20h 41m 00.36s +39° 04' 56.4" P.A. 276.00 sep 0.1 mag 6.51, Sp B6III dist. 308.64 pc (1006.78 l.y.)
| Coord 2000 |
20410+3905 |
|
Discov num |
MCA 62 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 41 00.36 +39 04 56.4 |
|
| Date first |
1980 |
|
Date last |
2016 |
|
Obs |
12 |
|
| Pa first |
101 |
|
Pa last |
276.4 |
|
P.A. Now (θ) |
276.4° |
|
| Sep first |
0.1 |
|
Sep last |
0.122 |
|
Sep. Now (ρ) |
0.122" |
|
| Mag pri |
6.51 |
|
Mag sec |
|
|
delta mag (ΔM) |
|
|
Spectral class |
B6III (blue-white) |
|
| Pri motion ra |
+007 |
|
Sec motion ra |
|
|
| Pri motion dec |
+000 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20410+3905 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
70367 |
20 41 00 +39 04 56 |
MCA 62 Aa,Ab |
2016 |
12 |
276 |
0.1 |
6.51 |
|
|
Y |
<=== |
| Show |
HD 197226 |
70367 |
20 41 00 +39 04 56 |
HJ 612 AB |
2008 |
15 |
9 |
48.9 |
6.48 |
10.60 |
4.12 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
70367 |
|
HIP |
102062 |
|
Tycho2 |
3166-00404-1 |
|
| Gaia DR2 |
2063614004844763136 |
|
HD |
197226 |
|
HR |
7922 |
|
BD |
BD+38 4187 |
|
| FK5 |
3653 |
|
Distance |
308.64 |
|
Distance ly |
1006.78 |
|
ORBITAL ELEMENTS
| Period (P) | 56.41y | |
Periastron (T) | 1974.08y | |
Semi-major axis (a) | 0.134a | |
| Eccentricity (e) | 0.104 | |
Inclination (i) | 86.2° | |
Longitude of periastron (ω) | 330.7° | |
| Node (Ω) | 93.6° | |
Notes | n | |
Reference | Ole2003c | |
| Equinox | 2000 | |
Last observation | 1988 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
270.3 |
0.111 |
| 2001 |
270.8 |
0.120 |
| 2002 |
271.3 |
0.127 |
| 2003 |
271.8 |
0.133 |
| 2004 |
272.2 |
0.139 |
| 2005 |
272.6 |
0.142 |
| 2006 |
272.9 |
0.145 |
| 2007 |
273.3 |
0.146 |
| 2008 |
273.7 |
0.146 |
| 2009 |
274.0 |
0.144 |
| 2010 |
274.4 |
0.141 |
| 2011 |
274.8 |
0.136 |
| 2012 |
275.2 |
0.131 |
| 2013 |
275.7 |
0.123 |
| 2014 |
276.2 |
0.115 |
| 2015 |
276.8 |
0.105 |
| 2016 |
277.6 |
0.094 |
| 2017 |
278.6 |
0.082 |
| 2018 |
279.9 |
0.069 |
| 2019 |
281.9 |
0.055 |
| 2020 |
285.3 |
0.040 |
| 2021 |
292.6 |
0.026 |
| 2022 |
317.9 |
0.012 |
| 2023 |
44.4 |
0.011 |
| 2024 |
74.1 |
0.024 |
| 2025 |
82.1 |
0.039 |
| 2026 |
85.7 |
0.053 |
| 2027 |
87.8 |
0.067 |
| 2028 |
89.3 |
0.080 |
| 2029 |
90.3 |
0.091 |
| 2030 |
91.1 |
0.101 |
|
|
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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