20330+4950 MCA 61 AB (HD 196088)
20h 32m 59.04s +49° 50' 28.3" P.A. 233.00 sep 0.1 mag 6.70, Sp A0+G dist. 458.72 pc (1496.34 l.y.)
| Coord 2000 |
20330+4950 |
|
Discov num |
MCA 61 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 32 59.04 +49 50 28.3 |
|
| Date first |
1980 |
|
Date last |
2006 |
|
Obs |
13 |
|
| Pa first |
68 |
|
Pa last |
232.8 |
|
P.A. Now (θ) |
232.8° |
|
| Sep first |
0.1 |
|
Sep last |
0.108 |
|
Sep. Now (ρ) |
0.108" |
|
| Mag pri |
6.70 |
|
Mag sec |
|
|
delta mag (ΔM) |
|
|
Spectral class |
A0+G (white/yellow) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
|
|
| Pri motion dec |
+005 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
20330+4950 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 196088 |
49782 |
20 32 59 +49 50 28 |
MCA 61 AB |
2006 |
13 |
233 |
0.1 |
6.70 |
|
|
Y |
<=== |
| Show |
|
49782 |
20 32 59 +49 50 28 |
RBR 49 AC |
2004 |
2 |
136 |
4.3 |
6.70 |
15.00 |
8.30 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 196088 |
|
Constellation |
Cygnus |
|
SAO |
49782 |
|
HIP |
101398 |
|
| Tycho2 |
3581-01342-1 |
|
Gaia DR2 |
2180169006262367104 |
|
HD |
196088 |
|
GC |
28610 |
|
| BD |
BD+49 3310 |
|
Distance |
458.72 |
|
Distance ly |
1496.34 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 20330+4950 MCA 61 |
| coord_arcsec_2000 | 203259.04+495028.3 |
| Period (P) | 184.75y | ± 33.29 |
Periastron (T) | 1986.09y | ± 0.66 |
Semi-major axis (a) | 0.133a | ± 0.016 |
| Eccentricity (e) | 0.612 | ± 0.045 |
Inclination (i) | 46° | ± 3.8 |
Longitude of periastron (ω) | 266.7° | ± 4.8 |
| Node (Ω) | 219.5° | ± 4.5 |
Notes | | |
Reference | Hrt2009 | |
| Equinox | | |
Last observation | 2006 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
220.6 |
0.088 |
| 2001 |
223.0 |
0.091 |
| 2002 |
225.2 |
0.094 |
| 2003 |
227.3 |
0.097 |
| 2004 |
229.2 |
0.100 |
| 2005 |
231.1 |
0.103 |
| 2006 |
232.8 |
0.105 |
| 2007 |
234.5 |
0.108 |
| 2008 |
236.1 |
0.110 |
| 2009 |
237.6 |
0.112 |
| 2010 |
239.1 |
0.114 |
| 2011 |
240.6 |
0.116 |
| 2012 |
241.9 |
0.118 |
| 2013 |
243.3 |
0.119 |
| 2014 |
244.6 |
0.121 |
| 2015 |
245.9 |
0.123 |
| 2016 |
247.1 |
0.124 |
| 2017 |
248.3 |
0.126 |
| 2018 |
249.5 |
0.127 |
| 2019 |
250.7 |
0.128 |
| 2020 |
251.8 |
0.129 |
| 2021 |
253.0 |
0.131 |
| 2022 |
254.1 |
0.132 |
| 2023 |
255.1 |
0.133 |
| 2024 |
256.2 |
0.134 |
| 2025 |
257.3 |
0.135 |
| 2026 |
258.3 |
0.136 |
| 2027 |
259.3 |
0.136 |
| 2028 |
260.3 |
0.137 |
| 2029 |
261.3 |
0.138 |
| 2030 |
262.3 |
0.139 |
|
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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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