17502+4424 SIG 3
17h 50m 12.91s +44° 24' 04.3" P.A. 68.00 sep 0.2 mag 13.20,14.00 Sp M7.5+L0
| Coord 2000 |
17502+4424 |
|
Discov num |
SIG 3 |
|
Comp |
|
|
Coord arcsec 2000 |
17 50 12.91 +44 24 04.3 |
|
| Date first |
2002 |
|
Date last |
2010 |
|
Obs |
12 |
|
| Pa first |
340 |
|
Pa last |
67.6 |
|
P.A. Now (θ) |
67.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.222 |
|
Sep. Now (ρ) |
0.222" |
|
| Mag pri |
13.20 |
|
Mag sec |
14.00 |
|
delta mag (ΔM) |
0.8 |
|
Spectral class |
M7.5+L0 (red/very deep red) |
|
| Pri motion ra |
-014 |
|
Sec motion ra |
|
|
| Pri motion dec |
+138 |
|
Sec motion dec |
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| Notes |
N
O
K
(See Notes, Orbital solution, K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
Gaia DR2 |
1349492949336359936 |
|
ORBITAL ELEMENTS SOLUTION #1
| Period (P) | 317y | ± 240 |
Periastron (T) | 2004.3y | ± 1.8 |
Semi-major axis (a) | 0.728a | ± 0.375 |
| Eccentricity (e) | 0.71 | ± 0.18 |
Inclination (i) | 44° | ± 10 |
Longitude of periastron (ω) | 267° | ± 26 |
| Node (Ω) | 99° | ± 6 |
Notes | n | |
Reference | Kon2010 | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
318.3 |
0.198 |
| 2001 |
326.7 |
0.182 |
| 2002 |
336.7 |
0.168 |
| 2003 |
348.2 |
0.158 |
| 2004 |
0.9 |
0.153 |
| 2005 |
14.1 |
0.153 |
| 2006 |
26.8 |
0.158 |
| 2007 |
38.3 |
0.168 |
| 2008 |
48.3 |
0.182 |
| 2009 |
56.8 |
0.198 |
| 2010 |
64.0 |
0.215 |
| 2011 |
70.1 |
0.233 |
| 2012 |
75.3 |
0.252 |
| 2013 |
79.8 |
0.270 |
| 2014 |
83.7 |
0.287 |
| 2015 |
87.2 |
0.305 |
| 2016 |
90.3 |
0.321 |
| 2017 |
93.1 |
0.338 |
| 2018 |
95.7 |
0.353 |
| 2019 |
98.0 |
0.368 |
| 2020 |
100.2 |
0.383 |
| 2021 |
102.2 |
0.397 |
| 2022 |
104.0 |
0.410 |
| 2023 |
105.8 |
0.423 |
| 2024 |
107.5 |
0.436 |
| 2025 |
109.0 |
0.448 |
| 2026 |
110.5 |
0.460 |
| 2027 |
111.9 |
0.471 |
| 2028 |
113.2 |
0.482 |
| 2029 |
114.5 |
0.492 |
| 2030 |
115.8 |
0.503 |
|
|
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) | 170y | ± 60 |
Periastron (T) | 2170.9974y | |
Semi-major axis (a) | 580m | ± 150 |
| Eccentricity (e) | 0.7 | ± 0.09 |
Inclination (i) | 53° | ± 4 |
Longitude of periastron (ω) | 185° | ± 26 |
| Node (Ω) | 131° | ± 10 |
Notes | n | |
Reference | Dup2017 | |
| Equinox | | |
Last observation | 2010 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
304.0 |
0.175 |
| 2001 |
314.0 |
0.174 |
| 2002 |
324.4 |
0.169 |
| 2003 |
335.5 |
0.163 |
| 2004 |
347.6 |
0.156 |
| 2005 |
0.6 |
0.152 |
| 2006 |
14.0 |
0.151 |
| 2007 |
27.1 |
0.156 |
| 2008 |
39.0 |
0.166 |
| 2009 |
49.3 |
0.179 |
| 2010 |
58.1 |
0.196 |
| 2011 |
65.3 |
0.215 |
| 2012 |
71.4 |
0.236 |
| 2013 |
76.4 |
0.257 |
| 2014 |
80.7 |
0.279 |
| 2015 |
84.4 |
0.300 |
| 2016 |
87.5 |
0.322 |
| 2017 |
90.3 |
0.344 |
| 2018 |
92.7 |
0.365 |
| 2019 |
94.9 |
0.386 |
| 2020 |
96.8 |
0.407 |
| 2021 |
98.6 |
0.427 |
| 2022 |
100.2 |
0.447 |
| 2023 |
101.7 |
0.466 |
| 2024 |
103.0 |
0.485 |
| 2025 |
104.3 |
0.504 |
| 2026 |
105.4 |
0.522 |
| 2027 |
106.5 |
0.539 |
| 2028 |
107.6 |
0.557 |
| 2029 |
108.5 |
0.573 |
| 2030 |
109.4 |
0.590 |
|
|
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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