15317+0053 TOK 48 (HD 138369)
15h 31m 42.89s +00° 53' 01.5" P.A. 17.00 sep 0.0 mag 7.80,8.90 Sp G0 dist. 50.84 pc (165.84 l.y.)
Coord 2000 |
15317+0053 |
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Discov num |
TOK 48 |
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Comp |
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Coord arcsec 2000 |
15 31 42.89 +00 53 01.5 |
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Date first |
2009 |
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Date last |
2021 |
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Obs |
19 |
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Pa first |
68 |
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Pa last |
17.2 |
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P.A. Now (θ) |
17.2° |
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Sep first |
0.0 |
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Sep last |
0.03 |
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Sep. Now (ρ) |
0.03" |
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Mag pri |
7.80 |
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Mag sec |
8.90 |
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delta mag (ΔM) |
1.1 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
-015 |
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Sec motion ra |
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Pri motion dec |
-090 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 138369 |
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Constellation |
Serpens |
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SAO |
121042 |
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HIP |
76031 |
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Tycho2 |
0350-00754-1 |
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Gaia DR2 |
4417762133275591552 |
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HD |
138369 |
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GC |
20867 |
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BD |
BD+01 3092 |
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Distance |
50.84 |
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Distance ly |
165.84 |
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ORBITAL ELEMENTS
Period (P) | 1.713y | ± 0.002 |
Periastron (T) | 2016.47y | ± 0.01 |
Semi-major axis (a) | 0.0427a | ± 0.001 |
Eccentricity (e) | 0.435 | ± 0.017 |
Inclination (i) | 150° | |
Longitude of periastron (ω) | 45.8° | ± 2.3 |
Node (Ω) | 341.9° | ± 2.1 |
Notes | n | |
Reference | Tok2016e | |
Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
137.8 |
0.057 |
2001 |
328.6 |
0.025 |
2002 |
111.7 |
0.056 |
2003 |
192.9 |
0.036 |
2004 |
78.5 |
0.046 |
2005 |
151.1 |
0.054 |
2006 |
20.1 |
0.032 |
2007 |
124.6 |
0.058 |
2008 |
243.2 |
0.024 |
2009 |
96.3 |
0.051 |
2010 |
167.2 |
0.047 |
2011 |
53.5 |
0.039 |
2012 |
137.0 |
0.057 |
2013 |
324.2 |
0.024 |
2014 |
110.9 |
0.055 |
2015 |
190.9 |
0.037 |
2016 |
77.2 |
0.045 |
2017 |
150.2 |
0.054 |
2018 |
17.4 |
0.032 |
2019 |
123.8 |
0.058 |
2020 |
238.5 |
0.024 |
2021 |
95.2 |
0.051 |
2022 |
166.0 |
0.048 |
2023 |
51.6 |
0.038 |
2024 |
136.2 |
0.058 |
2025 |
319.6 |
0.024 |
2026 |
110.0 |
0.055 |
2027 |
188.9 |
0.037 |
2028 |
75.9 |
0.045 |
2029 |
149.3 |
0.055 |
2030 |
14.7 |
0.031 |
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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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