19453-6823 HDS 2806 AB
19h 45m 15.54s -68° 23' 22.3" P.A. 115.00 sep 0.4 mag 10.34,12.97 Sp K3 dist. 46.86 pc (152.86 l.y.)
| Coord 2000 |
19453-6823 |
|
Discov num |
HDS2806 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 45 15.54 -68 23 22.3 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
20 |
|
| Pa first |
298 |
|
Pa last |
114.9 |
|
P.A. Now (θ) |
114.9° |
|
| Sep first |
0.3 |
|
Sep last |
0.38 |
|
Sep. Now (ρ) |
0.38" |
|
| Mag pri |
10.34 |
|
Mag sec |
12.97 |
|
delta mag (ΔM) |
2.63 |
|
Spectral class |
K3 (yellow-orange) |
|
| Pri motion ra |
+111 |
|
Sec motion ra |
|
|
| Pri motion dec |
+134 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
19453-6823 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
19 45 16 -68 23 22 |
HDS 2806 AB |
2021 |
20 |
115 |
0.4 |
10.34 |
12.97 |
2.63 |
Y |
<=== |
| Show |
|
|
19 45 16 -68 23 22 |
TOK 425 Ba,Bb |
2020 |
14 |
103 |
0.1 |
13.20 |
15.00 |
1.80 |
Y |
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pavo |
|
HIP |
97196 |
|
Tycho2 |
9306-01188-1 |
|
Gaia DR2 |
6426760779929152896 |
|
| HD |
185655 |
|
CP |
CP-68 3294 |
|
Distance |
46.86 |
|
Distance ly |
152.86 |
|
ORBITAL ELEMENTS
| Period (P) | 84.4y | ± 1.8 |
Periastron (T) | 2001.55y | ± 0.86 |
Semi-major axis (a) | 0.475a | ± 0.027 |
| Eccentricity (e) | 0.252 | ± 0.016 |
Inclination (i) | 140° | |
Longitude of periastron (ω) | 336.2° | ± 1.9 |
| Node (Ω) | 204° | ± 2.6 |
Notes | n | |
Reference | Tok2021b | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
232.4 |
0.331 |
| 2001 |
226.0 |
0.339 |
| 2002 |
220.0 |
0.346 |
| 2003 |
214.1 |
0.353 |
| 2004 |
208.5 |
0.358 |
| 2005 |
203.0 |
0.362 |
| 2006 |
197.6 |
0.365 |
| 2007 |
192.3 |
0.367 |
| 2008 |
187.0 |
0.367 |
| 2009 |
181.7 |
0.367 |
| 2010 |
176.4 |
0.366 |
| 2011 |
171.0 |
0.364 |
| 2012 |
165.6 |
0.363 |
| 2013 |
160.2 |
0.361 |
| 2014 |
154.7 |
0.360 |
| 2015 |
149.2 |
0.360 |
| 2016 |
143.7 |
0.360 |
| 2017 |
138.2 |
0.361 |
| 2018 |
132.7 |
0.363 |
| 2019 |
127.3 |
0.366 |
| 2020 |
122.1 |
0.370 |
| 2021 |
117.0 |
0.376 |
| 2022 |
112.0 |
0.382 |
| 2023 |
107.2 |
0.389 |
| 2024 |
102.6 |
0.398 |
| 2025 |
98.2 |
0.406 |
| 2026 |
93.9 |
0.416 |
| 2027 |
89.9 |
0.426 |
| 2028 |
86.1 |
0.436 |
| 2029 |
82.4 |
0.447 |
| 2030 |
78.9 |
0.458 |
|
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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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