20158+2749 CHR 94 Aa,Ab (23 Vul)
20h 15m 46.16s +27° 48' 51.2" P.A. 331.00 sep 0.0 mag 4.80,6.50 Sp K3III dist. 103.84 pc (338.73 l.y.)
| Coord 2000 |
20158+2749 |
|
Discov num |
CHR 94 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 15 46.16 +27 48 51.2 |
|
| Date first |
1985 |
|
Date last |
2007 |
|
Obs |
5 |
|
| Pa first |
90 |
|
Pa last |
330.7 |
|
P.A. Now (θ) |
330.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.047 |
|
Sep. Now (ρ) |
0.047" |
|
| Mag pri |
4.80 |
|
Mag sec |
6.50 |
|
delta mag (ΔM) |
1.7 |
|
Spectral class |
K3III (yellow-orange) |
|
| Pri motion ra |
-034 |
|
Sec motion ra |
|
|
| Pri motion dec |
+005 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20158+2749 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
23 Vul |
88428 |
20 15 46 +27 48 51 |
CHR 94 Aa,Ab |
2007 |
5 |
331 |
0.0 |
4.80 |
6.50 |
1.70 |
Y |
<=== |
| Show |
|
88428 |
20 15 46 +27 48 51 |
MCA 60 AB |
2004 |
27 |
148 |
0.1 |
4.80 |
6.94 |
2.14 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
23 Vul |
|
Constellation |
Vulpecula |
|
SAO |
88428 |
|
HIP |
99874 |
|
| Tycho2 |
2163-01794-1 |
|
Gaia DR2 |
1836958616310522496 |
|
HD |
192806 |
|
HR |
7744 |
|
| GC |
28152 |
|
BD |
BD+27 3666 |
|
Flamsteed |
23 Vulpeculae |
|
Flamsteed name |
23 Vul |
|
| Distance |
103.84 |
|
Distance ly |
338.73 |
|
ORBITAL ELEMENTS
| Period (P) | 25.33y | |
Periastron (T) | 2009.56y | |
Semi-major axis (a) | 0.111a | |
| Eccentricity (e) | 0.4 | |
Inclination (i) | 71.5° | |
Longitude of periastron (ω) | 293.8° | |
| Node (Ω) | 97.5° | |
Notes | n | |
Reference | Cve2009b | |
| Equinox | 2000 | |
Last observation | 2006 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
259.9 |
0.110 |
| 2001 |
263.8 |
0.117 |
| 2002 |
267.4 |
0.121 |
| 2003 |
270.8 |
0.122 |
| 2004 |
274.3 |
0.118 |
| 2005 |
278.2 |
0.109 |
| 2006 |
283.2 |
0.094 |
| 2007 |
290.7 |
0.071 |
| 2008 |
308.0 |
0.041 |
| 2009 |
19.2 |
0.022 |
| 2010 |
76.5 |
0.046 |
| 2011 |
91.7 |
0.071 |
| 2012 |
100.2 |
0.083 |
| 2013 |
107.1 |
0.086 |
| 2014 |
114.3 |
0.082 |
| 2015 |
122.8 |
0.073 |
| 2016 |
133.9 |
0.063 |
| 2017 |
149.1 |
0.054 |
| 2018 |
169.5 |
0.047 |
| 2019 |
192.7 |
0.047 |
| 2020 |
213.5 |
0.053 |
| 2021 |
228.9 |
0.063 |
| 2022 |
239.8 |
0.075 |
| 2023 |
247.7 |
0.087 |
| 2024 |
253.7 |
0.098 |
| 2025 |
258.5 |
0.108 |
| 2026 |
262.6 |
0.115 |
| 2027 |
266.3 |
0.120 |
| 2028 |
269.7 |
0.122 |
| 2029 |
273.1 |
0.120 |
| 2030 |
276.9 |
0.113 |
|
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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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