21000+4004 KUI 103 AB (V1396 Cyg)
21h 00m 05.49s +40° 04' 12.3" P.A. 58.00 sep 0.9 mag 10.49,12.40 Sp M2V+M0.5V dist. 15.29 pc (49.88 l.y.)
| Coord 2000 |
21000+4004 |
|
Discov num |
KUI 103 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 00 05.49 +40 04 12.3 |
|
| Date first |
1934 |
|
Date last |
2016 |
|
Obs |
69 |
|
| Pa first |
83 |
|
Pa last |
58.2 |
|
P.A. Now (θ) |
58.2° |
|
| Sep first |
0.9 |
|
Sep last |
0.885 |
|
Sep. Now (ρ) |
0.885" |
|
| Mag pri |
10.49 |
|
Mag sec |
12.40 |
|
delta mag (ΔM) |
1.91 |
|
Spectral class |
M2V+M0.5V (red/red) |
|
| Pri motion ra |
+601 |
|
Sec motion ra |
|
|
| Pri motion dec |
-253 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
21000+4004 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
V1396 Cyg |
|
21 00 05 +40 04 12 |
KUI 103 AB |
2016 |
69 |
58 |
0.9 |
10.49 |
12.40 |
1.91 |
Y |
<=== |
| Show |
|
|
21 00 05 +40 04 12 |
RAO 689 AC |
2012 |
1 |
300 |
2.4 |
8.70 |
13.30 |
4.60 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V1396 Cyg |
|
Constellation |
Cygnus |
|
HIP |
103655 |
|
Tycho2 |
3172-01090-1 |
|
| GL |
Gl 815A |
|
Distance |
15.29 |
|
Distance ly |
49.88 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 21000+4004 KUI 103 |
| coord_arcsec_2000 | 210005.49+400412.3 |
| Period (P) | 28.9y | |
Periastron (T) | 2007.26y | |
Semi-major axis (a) | 0.709a | |
| Eccentricity (e) | 0.656 | |
Inclination (i) | 36.3° | |
Longitude of periastron (ω) | 116° | |
| Node (Ω) | 143.5° | |
Notes | n | |
Reference | Doc2016b | |
| Equinox | 2000 | |
Last observation | 2012 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
113.4 |
0.898 |
| 2001 |
118.3 |
0.848 |
| 2002 |
124.1 |
0.785 |
| 2003 |
130.9 |
0.705 |
| 2004 |
139.8 |
0.606 |
| 2005 |
152.7 |
0.480 |
| 2006 |
176.8 |
0.326 |
| 2007 |
240.5 |
0.202 |
| 2008 |
314.1 |
0.286 |
| 2009 |
347.0 |
0.398 |
| 2010 |
6.5 |
0.487 |
| 2011 |
20.4 |
0.562 |
| 2012 |
31.1 |
0.629 |
| 2013 |
39.9 |
0.690 |
| 2014 |
47.3 |
0.745 |
| 2015 |
53.7 |
0.795 |
| 2016 |
59.4 |
0.839 |
| 2017 |
64.6 |
0.879 |
| 2018 |
69.3 |
0.913 |
| 2019 |
73.7 |
0.942 |
| 2020 |
77.9 |
0.966 |
| 2021 |
81.9 |
0.984 |
| 2022 |
85.8 |
0.997 |
| 2023 |
89.6 |
1.004 |
| 2024 |
93.4 |
1.004 |
| 2025 |
97.2 |
0.998 |
| 2026 |
101.0 |
0.985 |
| 2027 |
105.0 |
0.963 |
| 2028 |
109.3 |
0.933 |
| 2029 |
113.8 |
0.893 |
| 2030 |
118.9 |
0.842 |
|
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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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