20155+4743 S 743 (Omi2 Cyg)
20h 15m 28.32s +47° 42' 51.2" P.A. 175.00 sep 208.5 mag 4.16,8.36 Sp K7Ib+B6V dist. 324.68 pc (1059.11 l.y.)
| Coord 2000 |
20155+4743 |
|
Discov num |
S 743 |
|
Comp |
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Coord arcsec 2000 |
20 15 28.32 +47 42 51.2 |
|
| Date first |
1824 |
|
Date last |
2015 |
|
Obs |
13 |
|
| Pa first |
175 |
|
Pa last |
174.7 |
|
P.A. Now (θ) |
174.7° |
|
| Sep first |
208.9 |
|
Sep last |
208.496 |
|
Sep. Now (ρ) |
208.496" |
|
| Mag pri |
4.16 |
|
Mag sec |
8.36 |
|
delta mag (ΔM) |
4.2 |
|
Spectral class |
K7Ib+B6V (yellow-orange/blue-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
+004 |
|
| Pri motion dec |
-002 |
|
Sec motion dec |
+005 |
|
| Notes |
N
S
(See Notes, Parallax indidates non-physical) |
|
rPM=1.259
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Omi2 Cyg |
|
Var name |
V1488 Cyg |
|
Constellation |
Cygnus |
|
SAO |
49385 |
|
| HIP |
99848 |
|
Tycho2 |
3576-02157-1 |
|
Gaia DR2 |
2084154943645178368 |
|
HD |
192909 |
|
| HR |
7751 |
|
GC |
28160 |
|
BD |
BD+47 3059 |
|
Bayer |
Omicron 2 Cygni |
|
| Bayer name |
Omi2 Cyg |
|
Flamsteed |
32 Cygni |
|
Flamsteed name |
32 Cyg |
|
Distance |
324.68 |
|
| Distance ly |
1059.11 |
|
Bayer greek |
ο2 Cyg |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 20155+4743 |
| coord_arcsec_2000 | 201528.32+474251.1 |
| Period (P) | 1147.51d (3.14y) | |
Periastron (T) | 52646.9d (2003.018y) | |
Semi-major axis (a) | 3.4m | ± 0.2 |
| Eccentricity (e) | 0.304 | |
Inclination (i) | 57.1° | ± 4.2 |
Longitude of periastron (ω) | 221.4° | |
| Node (Ω) | 48° | ± 2.3 |
Notes | n | |
Reference | Ren2013 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
282.5 |
0.002 |
| 2001-01-01 |
54.4 |
0.004 |
| 2002-01-01 |
118.4 |
0.002 |
| 2003-01-01 |
250.5 |
0.002 |
| 2004-01-01 |
48.5 |
0.004 |
| 2005-01-01 |
102.2 |
0.003 |
| 2006-01-01 |
231.5 |
0.002 |
| 2007-01-01 |
42.1 |
0.004 |
| 2008-01-01 |
90.0 |
0.003 |
| 2009-01-01 |
216.5 |
0.003 |
| 2010-01-01 |
34.4 |
0.003 |
| 2011-01-01 |
80.6 |
0.003 |
| 2012-01-01 |
201.3 |
0.002 |
| 2013-01-01 |
23.7 |
0.003 |
| 2014-01-01 |
72.9 |
0.004 |
| 2015-01-01 |
183.7 |
0.002 |
| 2016-01-01 |
6.4 |
0.002 |
| 2017-01-01 |
66.3 |
0.004 |
| 2018-01-01 |
162.7 |
0.002 |
| 2019-01-01 |
333.1 |
0.001 |
| 2020-01-01 |
60.4 |
0.004 |
| 2021-01-01 |
140.0 |
0.002 |
| 2022-01-01 |
284.8 |
0.001 |
| 2023-01-01 |
54.7 |
0.004 |
| 2024-01-01 |
119.3 |
0.002 |
| 2025-01-01 |
251.8 |
0.002 |
| 2026-01-01 |
48.9 |
0.004 |
| 2027-01-01 |
103.0 |
0.003 |
| 2028-01-01 |
232.4 |
0.002 |
| 2029-01-01 |
42.5 |
0.004 |
| 2030-01-01 |
90.6 |
0.003 |
|
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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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