21158-5316 FIN 329 (HD 202103)
21h 15m 45.84s -53° 15' 47.0" P.A. 92.00 sep 0.2 mag 6.33,6.80 Sp A6IV dist. 131.23 pc (428.07 l.y.)
| Coord 2000 |
21158-5316 |
|
Discov num |
FIN 329 |
|
Comp |
|
|
Coord arcsec 2000 |
21 15 45.84 -53 15 47.0 |
|
| Date first |
1951 |
|
Date last |
2020 |
|
Obs |
31 |
|
| Pa first |
82 |
|
Pa last |
92 |
|
P.A. Now (θ) |
84.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.157 |
|
Sep. Now (ρ) |
0.184" |
|
| Mag pri |
6.33 |
|
Mag sec |
6.80 |
|
delta mag (ΔM) |
0.47 |
|
Spectral class |
A6IV (white) |
|
| Pri motion ra |
+035 |
|
Sec motion ra |
|
|
| Pri motion dec |
-018 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 202103 |
|
Constellation |
Indus |
|
SAO |
246929 |
|
HIP |
104978 |
|
| Tycho2 |
8793-00796-1 |
|
Gaia DR2 |
6464469665075523840 |
|
HD |
202103 |
|
HR |
8114 |
|
| GC |
29704 |
|
CP |
CP-5310015 |
|
FK5 |
796 |
|
Distance |
131.23 |
|
| Distance ly |
428.07 |
|
ORBITAL ELEMENTS SOLUTION #1
| Period (P) | 36.86y | |
Periastron (T) | 2003.19y | |
Semi-major axis (a) | 0.176a | |
| Eccentricity (e) | 0.054 | |
Inclination (i) | 112.8° | |
Longitude of periastron (ω) | 160.2° | |
| Node (Ω) | 81.3° | |
Notes | n | |
Reference | Tok2020g | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
289.7 |
0.111 |
| 2001 |
281.6 |
0.129 |
| 2002 |
275.3 |
0.144 |
| 2003 |
270.1 |
0.156 |
| 2004 |
265.6 |
0.164 |
| 2005 |
261.3 |
0.167 |
| 2006 |
257.1 |
0.165 |
| 2007 |
252.7 |
0.159 |
| 2008 |
247.7 |
0.148 |
| 2009 |
241.9 |
0.134 |
| 2010 |
234.5 |
0.118 |
| 2011 |
224.5 |
0.100 |
| 2012 |
210.5 |
0.084 |
| 2013 |
191.0 |
0.072 |
| 2014 |
167.1 |
0.070 |
| 2015 |
144.7 |
0.077 |
| 2016 |
127.8 |
0.091 |
| 2017 |
116.0 |
0.109 |
| 2018 |
107.5 |
0.127 |
| 2019 |
101.1 |
0.144 |
| 2020 |
96.0 |
0.159 |
| 2021 |
91.7 |
0.171 |
| 2022 |
87.8 |
0.179 |
| 2023 |
84.3 |
0.184 |
| 2024 |
80.9 |
0.185 |
| 2025 |
77.4 |
0.182 |
| 2026 |
73.7 |
0.175 |
| 2027 |
69.6 |
0.164 |
| 2028 |
64.9 |
0.150 |
| 2029 |
59.1 |
0.133 |
| 2030 |
51.4 |
0.115 |
|
|
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 |
|
ORBITAL ELEMENTS SOLUTION #2
| Period (P) | 17.85y | ± 0.18 |
Periastron (T) | 2013.69y | ± 0.032 |
Semi-major axis (a) | 0.093a | ± 0.001 |
| Eccentricity (e) | 0.733 | ± 0.006 |
Inclination (i) | 180° | ± 0 |
Longitude of periastron (ω) | 0° | ± 0 |
| Node (Ω) | 263.6° | ± 0.4 |
Notes | n | |
Reference | Tok2021f | |
| Equinox | 2000 | |
Last observation | 2020 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
109.0 |
0.127 |
| 2001 |
102.4 |
0.141 |
| 2002 |
96.8 |
0.150 |
| 2003 |
91.8 |
0.157 |
| 2004 |
87.1 |
0.160 |
| 2005 |
82.5 |
0.161 |
| 2006 |
77.9 |
0.159 |
| 2007 |
73.1 |
0.154 |
| 2008 |
67.8 |
0.146 |
| 2009 |
61.8 |
0.135 |
| 2010 |
54.5 |
0.120 |
| 2011 |
44.7 |
0.100 |
| 2012 |
29.1 |
0.075 |
| 2013 |
352.4 |
0.042 |
| 2014 |
211.0 |
0.030 |
| 2015 |
147.6 |
0.063 |
| 2016 |
127.4 |
0.091 |
| 2017 |
116.0 |
0.113 |
| 2018 |
108.0 |
0.130 |
| 2019 |
101.5 |
0.142 |
| 2020 |
96.1 |
0.151 |
| 2021 |
91.1 |
0.157 |
| 2022 |
86.4 |
0.161 |
| 2023 |
81.8 |
0.161 |
| 2024 |
77.2 |
0.158 |
| 2025 |
72.3 |
0.153 |
| 2026 |
67.0 |
0.145 |
| 2027 |
60.8 |
0.133 |
| 2028 |
53.2 |
0.117 |
| 2029 |
42.8 |
0.097 |
| 2030 |
25.7 |
0.070 |
|
|
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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