21364-4041 I 1444 (HD 205429)
21h 36m 24.11s -40° 40' 46.6" P.A. 125.00 sep 0.2 mag 9.42,9.46 Sp F7V dist. 130.21 pc (424.75 l.y.)
Coord 2000 |
21364-4041 |
|
Discov num |
I 1444 |
|
Comp |
|
|
Coord arcsec 2000 |
21 36 24.11 -40 40 46.6 |
|
Date first |
1926 |
|
Date last |
2021 |
|
Obs |
16 |
|
Pa first |
259 |
|
Pa last |
124.6 |
|
P.A. Now (θ) |
119° |
|
Sep first |
0.3 |
|
Sep last |
0.235 |
|
Sep. Now (ρ) |
0.228" |
|
Mag pri |
9.42 |
|
Mag sec |
9.46 |
|
delta mag (ΔM) |
0.04 |
|
Spectral class |
F7V (yellow-white) |
|
Pri motion ra |
-005 |
|
Sec motion ra |
|
|
Pri motion dec |
+003 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 205429 |
|
Constellation |
Grus |
|
SAO |
230749 |
|
HIP |
106676 |
|
Tycho2 |
7984-00930-1 |
|
HD |
205429 |
|
CD |
CD-4114581 |
|
CP |
CP-41 9660 |
|
Distance |
130.21 |
|
Distance ly |
424.75 |
|
ORBITAL ELEMENTS
Period (P) | 169y | |
Periastron (T) | 2037.05y | |
Semi-major axis (a) | 0.308a | |
Eccentricity (e) | 0.365 | |
Inclination (i) | 160° | |
Longitude of periastron (ω) | 68.4° | |
Node (Ω) | 125° | |
Notes | | |
Reference | Tok2019h | |
Equinox | 2000 | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
174.9 |
0.315 |
2001 |
173.1 |
0.312 |
2002 |
171.2 |
0.308 |
2003 |
169.4 |
0.305 |
2004 |
167.4 |
0.302 |
2005 |
165.5 |
0.298 |
2006 |
163.5 |
0.295 |
2007 |
161.4 |
0.291 |
2008 |
159.3 |
0.288 |
2009 |
157.1 |
0.284 |
2010 |
154.9 |
0.280 |
2011 |
152.6 |
0.276 |
2012 |
150.3 |
0.273 |
2013 |
147.9 |
0.269 |
2014 |
145.4 |
0.265 |
2015 |
142.8 |
0.261 |
2016 |
140.2 |
0.257 |
2017 |
137.5 |
0.253 |
2018 |
134.6 |
0.249 |
2019 |
131.7 |
0.244 |
2020 |
128.7 |
0.240 |
2021 |
125.6 |
0.236 |
2022 |
122.4 |
0.232 |
2023 |
119.0 |
0.228 |
2024 |
115.6 |
0.224 |
2025 |
112.0 |
0.220 |
2026 |
108.2 |
0.216 |
2027 |
104.4 |
0.212 |
2028 |
100.3 |
0.208 |
2029 |
96.2 |
0.204 |
2030 |
91.9 |
0.201 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|