14035+1047 GJ 538 (HD 122742)
14h 03m 32.35s +10° 47' 12.4" P.A. 253.00 sep 0.2 mag 6.30,10.00 Sp G6V dist. 16.98 pc (55.39 l.y.)
| Coord 2000 |
14035+1047 |
|
Discov num |
GJ 538 |
|
Comp |
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|
Coord arcsec 2000 |
14 03 32.35 +10 47 12.4 |
|
| Date first |
2003 |
|
Date last |
2021 |
|
Obs |
12 |
|
| Pa first |
80 |
|
Pa last |
252.7 |
|
P.A. Now (θ) |
82.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.161 |
|
Sep. Now (ρ) |
0.214" |
|
| Mag pri |
6.30 |
|
Mag sec |
10.00 |
|
delta mag (ΔM) |
3.7 |
|
Spectral class |
G6V (yellow) |
|
| Pri motion ra |
+084 |
|
Sec motion ra |
|
|
| Pri motion dec |
-304 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 122742 |
|
Constellation |
Bootes |
|
SAO |
100832 |
|
HIP |
68682 |
|
| Tycho2 |
0904-01278-1 |
|
HD |
122742 |
|
HR |
5273 |
|
GC |
18985 |
|
| GL |
Gl 538 |
|
BD |
BD+11 2625 |
|
Distance |
16.98 |
|
Distance ly |
55.39 |
|
ORBITAL ELEMENTS
| Period (P) | 9.876y | ± 0 |
Periastron (T) | 2011.17y | ± 0 |
Semi-major axis (a) | 0.3156a | ± 0.0006 |
| Eccentricity (e) | 0.48 | ± 0.001 |
Inclination (i) | 96.9° | ± 0.2 |
Longitude of periastron (ω) | 183° | ± 0.2 |
| Node (Ω) | 74° | ± 0.1 |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
40.2 |
0.058 |
| 2001 |
258.0 |
0.150 |
| 2002 |
232.2 |
0.065 |
| 2003 |
85.1 |
0.167 |
| 2004 |
78.5 |
0.331 |
| 2005 |
75.9 |
0.430 |
| 2006 |
74.0 |
0.466 |
| 2007 |
72.2 |
0.445 |
| 2008 |
69.9 |
0.365 |
| 2009 |
65.4 |
0.225 |
| 2010 |
17.7 |
0.037 |
| 2011 |
256.1 |
0.160 |
| 2012 |
214.3 |
0.041 |
| 2013 |
83.6 |
0.191 |
| 2014 |
78.1 |
0.347 |
| 2015 |
75.7 |
0.437 |
| 2016 |
73.8 |
0.467 |
| 2017 |
72.0 |
0.438 |
| 2018 |
69.6 |
0.351 |
| 2019 |
64.4 |
0.203 |
| 2020 |
330.7 |
0.030 |
| 2021 |
254.3 |
0.164 |
| 2022 |
169.7 |
0.028 |
| 2023 |
82.5 |
0.214 |
| 2024 |
77.7 |
0.362 |
| 2025 |
75.4 |
0.444 |
| 2026 |
73.6 |
0.466 |
| 2027 |
71.7 |
0.430 |
| 2028 |
69.2 |
0.336 |
| 2029 |
63.1 |
0.180 |
| 2030 |
292.6 |
0.044 |
| 2031 |
252.5 |
0.161 |
| 2032 |
122.6 |
0.040 |
| 2033 |
81.6 |
0.236 |
| 2034 |
77.4 |
0.375 |
| 2035 |
75.2 |
0.450 |
| 2036 |
73.4 |
0.465 |
| 2037 |
71.5 |
0.422 |
| 2038 |
68.7 |
0.320 |
| 2039 |
61.4 |
0.157 |
| 2040 |
276.3 |
0.066 |
| 2041 |
250.6 |
0.151 |
| 2042 |
103.3 |
0.063 |
| 2043 |
80.8 |
0.257 |
| 2044 |
77.1 |
0.388 |
| 2045 |
75.0 |
0.455 |
| 2046 |
73.2 |
0.463 |
| 2047 |
71.2 |
0.412 |
| 2048 |
68.2 |
0.303 |
| 2049 |
59.1 |
0.133 |
| 2050 |
268.4 |
0.090 |
|
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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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