05558+3656 STT 122 (HD 39697)
05h 55m 50.25s +36° 56' 12.1" P.A. 94.00 sep 0.3 mag 7.80,8.49 Sp A5 dist. 152.44 pc (497.26 l.y.)
| Coord 2000 |
05558+3656 |
|
Discov num |
STT 122 |
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Comp |
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Coord arcsec 2000 |
05 55 50.25 +36 56 12.1 |
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| Date first |
1843 |
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Date last |
2018 |
|
Obs |
42 |
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| Pa first |
118 |
|
Pa last |
93.9 |
|
P.A. Now (θ) |
92.7° |
|
| Sep first |
0.2 |
|
Sep last |
0.32 |
|
Sep. Now (ρ) |
0.392" |
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| Mag pri |
7.80 |
|
Mag sec |
8.49 |
|
delta mag (ΔM) |
0.69 |
|
Spectral class |
A5 (white) |
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| Pri motion ra |
-010 |
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Sec motion ra |
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| Pri motion dec |
-033 |
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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 39697 |
|
Constellation |
Auriga |
|
SAO |
58575 |
|
HIP |
28043 |
|
| Tycho2 |
2418-00554-1 |
|
HD |
39697 |
|
ADS |
4505 |
|
BD |
BD+36 1297 |
|
| Distance |
152.44 |
|
Distance ly |
497.26 |
|
ORBITAL ELEMENTS
| Period (P) | 217.74y | |
Periastron (T) | 1966.95y | |
Semi-major axis (a) | 0.376a | |
| Eccentricity (e) | 0.844 | |
Inclination (i) | 64.9° | |
Longitude of periastron (ω) | 249.9° | |
| Node (Ω) | 62.1° | |
Notes | | |
Reference | Lin1990a | |
| Equinox | | |
Last observation | 1988 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
83.9 |
0.346 |
| 2001 |
84.4 |
0.349 |
| 2002 |
84.8 |
0.352 |
| 2003 |
85.2 |
0.355 |
| 2004 |
85.7 |
0.358 |
| 2005 |
86.1 |
0.361 |
| 2006 |
86.5 |
0.364 |
| 2007 |
86.9 |
0.366 |
| 2008 |
87.3 |
0.368 |
| 2009 |
87.7 |
0.371 |
| 2010 |
88.0 |
0.373 |
| 2011 |
88.4 |
0.375 |
| 2012 |
88.8 |
0.377 |
| 2013 |
89.2 |
0.379 |
| 2014 |
89.5 |
0.380 |
| 2015 |
89.9 |
0.382 |
| 2016 |
90.3 |
0.384 |
| 2017 |
90.6 |
0.385 |
| 2018 |
91.0 |
0.386 |
| 2019 |
91.3 |
0.388 |
| 2020 |
91.7 |
0.389 |
| 2021 |
92.0 |
0.390 |
| 2022 |
92.4 |
0.391 |
| 2023 |
92.7 |
0.392 |
| 2024 |
93.1 |
0.393 |
| 2025 |
93.4 |
0.394 |
| 2026 |
93.8 |
0.394 |
| 2027 |
94.1 |
0.395 |
| 2028 |
94.4 |
0.396 |
| 2029 |
94.8 |
0.396 |
| 2030 |
95.1 |
0.397 |
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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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