18455+0530 FIN 332 Ba,Bb
18h 45m 28.36s +05° 30' 00.4" P.A. 324.00 sep 0.1 mag 7.48,7.48 Sp A1V+... dist. 188.68 pc (615.47 l.y.)
| Coord 2000 |
18455+0530 |
|
Discov num |
FIN 332 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
18 45 28.36 +05 30 00.4 |
|
| Date first |
1953 |
|
Date last |
2021 |
|
Obs |
58 |
|
| Pa first |
315 |
|
Pa last |
324.4 |
|
P.A. Now (θ) |
323.4° |
|
| Sep first |
0.1 |
|
Sep last |
0.125 |
|
Sep. Now (ρ) |
0.131" |
|
| Mag pri |
7.48 |
|
Mag sec |
7.48 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
A1V+... (white) |
|
| Pri motion ra |
+009 |
|
Sec motion ra |
+009 |
|
| Pri motion dec |
-003 |
|
Sec motion dec |
-003 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
18455+0530 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
123886 |
18 45 28 +05 30 00 |
FIN 332 Aa,Ab |
2021 |
75 |
142 |
0.0 |
6.91 |
7.31 |
0.40 |
Y |
|
| Show |
HD 173495 |
123886 |
18 45 28 +05 30 00 |
STF 2375 AB |
2019 |
307 |
120 |
2.6 |
6.34 |
6.73 |
0.39 |
Y |
|
| Show |
|
123886 |
18 45 28 +05 30 00 |
FIN 332 Ba,Bb |
2021 |
58 |
324 |
0.1 |
7.48 |
7.48 |
0.00 |
Y |
<=== |
Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Serpens |
|
SAO |
123886 |
|
HIP |
92027 |
|
Tycho2 |
0456-01022-1 |
|
| Gaia DR2 |
4285283042432285568 |
|
HD |
173495 |
|
HR |
7048 |
|
ADS |
11640 |
|
| BD |
BD+05 3941 |
|
Distance |
188.68 |
|
Distance ly |
615.47 |
|
ORBITAL ELEMENTS
| Period (P) | 39.76y | ± 0.37 |
Periastron (T) | 2005.09y | ± 0.33 |
Semi-major axis (a) | 0.12a | ± 0.008 |
| Eccentricity (e) | 0.843 | ± 0.02 |
Inclination (i) | 106.9° | ± 1.6 |
Longitude of periastron (ω) | 305.9° | ± 4.1 |
| Node (Ω) | 119.3° | ± 1.5 |
Notes | n | |
Reference | Tok2020k | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
306.6 |
0.118 |
| 2001 |
305.0 |
0.106 |
| 2002 |
302.9 |
0.091 |
| 2003 |
299.8 |
0.071 |
| 2004 |
293.4 |
0.043 |
| 2005 |
160.5 |
0.008 |
| 2006 |
103.0 |
0.030 |
| 2007 |
79.4 |
0.029 |
| 2008 |
53.9 |
0.028 |
| 2009 |
30.6 |
0.032 |
| 2010 |
13.2 |
0.038 |
| 2011 |
1.2 |
0.045 |
| 2012 |
352.8 |
0.054 |
| 2013 |
346.7 |
0.062 |
| 2014 |
342.1 |
0.071 |
| 2015 |
338.5 |
0.079 |
| 2016 |
335.5 |
0.087 |
| 2017 |
333.0 |
0.094 |
| 2018 |
330.9 |
0.102 |
| 2019 |
329.0 |
0.108 |
| 2020 |
327.4 |
0.115 |
| 2021 |
325.9 |
0.121 |
| 2022 |
324.6 |
0.126 |
| 2023 |
323.4 |
0.131 |
| 2024 |
322.2 |
0.136 |
| 2025 |
321.1 |
0.140 |
| 2026 |
320.1 |
0.143 |
| 2027 |
319.2 |
0.146 |
| 2028 |
318.2 |
0.149 |
| 2029 |
317.3 |
0.151 |
| 2030 |
316.4 |
0.152 |
|
|
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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