20229+4259 HO 128 AB (NSV13053)
20h 22m 55.49s +42° 59' 00.4" P.A. 357.00 sep 1.4 mag 6.41,8.82 Sp G8III dist. 102.99 pc (335.95 l.y.)
| Coord 2000 |
20229+4259 |
|
Discov num |
HO 128 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 22 55.49 +42 59 00.4 |
|
| Date first |
1886 |
|
Date last |
2016 |
|
Obs |
37 |
|
| Pa first |
35 |
|
Pa last |
357.1 |
|
P.A. Now (θ) |
357.1° |
|
| Sep first |
1.0 |
|
Sep last |
1.383 |
|
Sep. Now (ρ) |
1.383" |
|
| Mag pri |
6.41 |
|
Mag sec |
8.82 |
|
delta mag (ΔM) |
2.41 |
|
Spectral class |
G8III (yellow) |
|
| Pri motion ra |
+055 |
|
Sec motion ra |
+055 |
|
| Pri motion dec |
+039 |
|
Sec motion dec |
+039 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20229+4259 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
NSV13053 |
49550 |
20 22 55 +42 59 00 |
HO 128 AB |
2016 |
37 |
357 |
1.4 |
6.41 |
8.82 |
2.41 |
Y |
<=== |
| Show |
|
49550 |
20 22 55 +42 59 00 |
STTA 207 AC |
2017 |
30 |
65 |
85.8 |
6.41 |
8.01 |
1.60 |
|
|
| Show |
|
49555 |
20 23 03 +42 59 38 |
STTA 207 CD |
2015 |
9 |
162 |
56.1 |
8.01 |
14.43 |
6.42 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV13053 |
|
Constellation |
Cygnus |
|
SAO |
49550 |
|
HIP |
100515 |
|
| Tycho2 |
3160-01936-1 |
|
Gaia DR2 |
2069136233279278720 |
|
HD |
194220 |
|
HR |
7802 |
|
| GC |
28364 |
|
ADS |
13786 |
|
BD |
BD+42 3721 |
|
Distance |
102.99 |
|
| Distance ly |
335.95 |
|
ORBITAL ELEMENTS
| Period (P) | 1027.9807y | ± 507.5142 |
Periastron (T) | 2080.6251y | ± 32.5694 |
Semi-major axis (a) | 2.6928a | ± 1.91925 |
| Eccentricity (e) | 0.70717 | ± 0.24844 |
Inclination (i) | 103.488° | ± 8.825 |
Longitude of periastron (ω) | 248.513° | ± 20.476 |
| Node (Ω) | 167.665° | ± 5.068 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2013 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
1.0 |
1.362 |
| 2001 |
0.7 |
1.362 |
| 2002 |
0.5 |
1.361 |
| 2003 |
0.3 |
1.361 |
| 2004 |
0.1 |
1.361 |
| 2005 |
359.8 |
1.360 |
| 2006 |
359.6 |
1.359 |
| 2007 |
359.4 |
1.358 |
| 2008 |
359.1 |
1.357 |
| 2009 |
358.9 |
1.356 |
| 2010 |
358.7 |
1.355 |
| 2011 |
358.5 |
1.353 |
| 2012 |
358.2 |
1.352 |
| 2013 |
358.0 |
1.350 |
| 2014 |
357.8 |
1.348 |
| 2015 |
357.5 |
1.345 |
| 2016 |
357.3 |
1.343 |
| 2017 |
357.1 |
1.340 |
| 2018 |
356.8 |
1.337 |
| 2019 |
356.6 |
1.334 |
| 2020 |
356.4 |
1.331 |
| 2021 |
356.1 |
1.327 |
| 2022 |
355.9 |
1.324 |
| 2023 |
355.7 |
1.320 |
| 2024 |
355.4 |
1.315 |
| 2025 |
355.2 |
1.311 |
| 2026 |
354.9 |
1.306 |
| 2027 |
354.7 |
1.301 |
| 2028 |
354.4 |
1.296 |
| 2029 |
354.2 |
1.290 |
| 2030 |
353.9 |
1.284 |
|
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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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