19240-5320 HDS 2751 (HD 181650)
19h 24m 02.50s -53° 19' 34.1" P.A. 328.00 sep 0.1 mag 9.01,10.02 Sp G5V dist. 78.49 pc (256.03 l.y.)
| Coord 2000 |
19240-5320 |
|
Discov num |
HDS2751 |
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Comp |
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Coord arcsec 2000 |
19 24 02.50 -53 19 34.1 |
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| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
10 |
|
| Pa first |
59 |
|
Pa last |
328.1 |
|
P.A. Now (θ) |
328.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.09 |
|
Sep. Now (ρ) |
0.09" |
|
| Mag pri |
9.01 |
|
Mag sec |
10.02 |
|
delta mag (ΔM) |
1.01 |
|
Spectral class |
G5V (yellow) |
|
| Pri motion ra |
+076 |
|
Sec motion ra |
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|
| Pri motion dec |
-146 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 181650 |
|
Constellation |
Telescopium |
|
SAO |
246067 |
|
HIP |
95360 |
|
| Tycho2 |
8761-01321-1 |
|
Gaia DR2 |
6643918105987457536 |
|
HD |
181650 |
|
CP |
CP-53 9544 |
|
| Distance |
78.49 |
|
Distance ly |
256.03 |
|
ORBITAL ELEMENTS
| Period (P) | 20.61y | ± 0.61 |
Periastron (T) | 2019.52y | ± 0.13 |
Semi-major axis (a) | 0.119a | ± 0.006 |
| Eccentricity (e) | 0.6 | |
Inclination (i) | 33.6° | ± 5.2 |
Longitude of periastron (ω) | 67° | ± 9.6 |
| Node (Ω) | 157.4° | ± 12.8 |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
304.5 |
0.062 |
| 2001 |
332.7 |
0.093 |
| 2002 |
347.9 |
0.116 |
| 2003 |
358.5 |
0.133 |
| 2004 |
6.9 |
0.146 |
| 2005 |
14.1 |
0.155 |
| 2006 |
20.7 |
0.161 |
| 2007 |
27.0 |
0.164 |
| 2008 |
33.0 |
0.165 |
| 2009 |
39.1 |
0.164 |
| 2010 |
45.3 |
0.161 |
| 2011 |
51.8 |
0.157 |
| 2012 |
58.7 |
0.151 |
| 2013 |
66.4 |
0.143 |
| 2014 |
75.0 |
0.133 |
| 2015 |
85.1 |
0.122 |
| 2016 |
97.4 |
0.109 |
| 2017 |
113.4 |
0.094 |
| 2018 |
136.4 |
0.075 |
| 2019 |
178.3 |
0.051 |
| 2020 |
266.9 |
0.044 |
| 2021 |
318.3 |
0.075 |
| 2022 |
339.5 |
0.103 |
| 2023 |
352.4 |
0.123 |
| 2024 |
1.9 |
0.139 |
| 2025 |
9.8 |
0.150 |
| 2026 |
16.8 |
0.158 |
| 2027 |
23.2 |
0.162 |
| 2028 |
29.3 |
0.165 |
| 2029 |
35.4 |
0.165 |
| 2030 |
41.5 |
0.163 |
|
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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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