15413+5959 STF 1969 (HD 140590)
15h 41m 16.41s +59° 59' 17.2" P.A. 32.00 sep 1.1 mag 9.14,9.50 Sp K0 dist. 55.65 pc (181.53 l.y.)
| Coord 2000 |
15413+5959 |
|
Discov num |
STF1969 |
|
Comp |
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|
Coord arcsec 2000 |
15 41 16.41 +59 59 17.2 |
|
| Date first |
1831 |
|
Date last |
2017 |
|
Obs |
78 |
|
| Pa first |
43 |
|
Pa last |
31.5 |
|
P.A. Now (θ) |
30.6° |
|
| Sep first |
1.5 |
|
Sep last |
1.073 |
|
Sep. Now (ρ) |
1.12" |
|
| Mag pri |
9.14 |
|
Mag sec |
9.50 |
|
delta mag (ΔM) |
0.36 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
-220 |
|
Sec motion ra |
-220 |
|
| Pri motion dec |
+165 |
|
Sec motion dec |
+165 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 140590 |
|
Constellation |
Draco |
|
SAO |
16813 |
|
HIP |
76837 |
|
| Tycho2 |
3875-00977-1 |
|
Gaia DR2 |
1627216671545778176 |
|
HD |
140590 |
|
GC |
21119 |
|
| ADS |
9756 |
|
BD |
BD+60 1629 |
|
Distance |
55.65 |
|
Distance ly |
181.53 |
|
ORBITAL ELEMENTS
| Period (P) | 278.7192y | ± 23.3191 |
Periastron (T) | 1960.3457y | ± 0.6624 |
Semi-major axis (a) | 0.82407a | ± 0.03305 |
| Eccentricity (e) | 0.75023 | ± 0.02051 |
Inclination (i) | 73.362° | ± 0.681 |
Longitude of periastron (ω) | 205.297° | ± 1.871 |
| Node (Ω) | 30.541° | ± 0.743 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
26.6 |
0.846 |
| 2001 |
26.8 |
0.862 |
| 2002 |
27.1 |
0.876 |
| 2003 |
27.3 |
0.891 |
| 2004 |
27.5 |
0.905 |
| 2005 |
27.7 |
0.919 |
| 2006 |
27.9 |
0.932 |
| 2007 |
28.1 |
0.946 |
| 2008 |
28.3 |
0.959 |
| 2009 |
28.4 |
0.971 |
| 2010 |
28.6 |
0.984 |
| 2011 |
28.8 |
0.996 |
| 2012 |
28.9 |
1.007 |
| 2013 |
29.1 |
1.019 |
| 2014 |
29.3 |
1.030 |
| 2015 |
29.4 |
1.041 |
| 2016 |
29.6 |
1.052 |
| 2017 |
29.7 |
1.062 |
| 2018 |
29.9 |
1.073 |
| 2019 |
30.0 |
1.083 |
| 2020 |
30.1 |
1.092 |
| 2021 |
30.3 |
1.102 |
| 2022 |
30.4 |
1.111 |
| 2023 |
30.6 |
1.120 |
| 2024 |
30.7 |
1.129 |
| 2025 |
30.8 |
1.138 |
| 2026 |
30.9 |
1.146 |
| 2027 |
31.1 |
1.155 |
| 2028 |
31.2 |
1.163 |
| 2029 |
31.3 |
1.171 |
| 2030 |
31.4 |
1.178 |
|
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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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