12291+3123 STT 251 (HD 108693)
12h 29m 07.72s +31° 23' 25.4" P.A. 55.00 sep 0.7 mag 8.35,9.27 Sp G0 dist. 173.61 pc (566.32 l.y.)
Coord 2000 |
12291+3123 |
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Discov num |
STT 251 |
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Comp |
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Coord arcsec 2000 |
12 29 07.72 +31 23 25.4 |
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Date first |
1843 |
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Date last |
2018 |
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Obs |
84 |
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Pa first |
123 |
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Pa last |
54.8 |
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P.A. Now (θ) |
54.8° |
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Sep first |
0.4 |
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Sep last |
0.67 |
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Sep. Now (ρ) |
0.67" |
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Mag pri |
8.35 |
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Mag sec |
9.27 |
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delta mag (ΔM) |
0.92 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
+148 |
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Sec motion ra |
+148 |
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Pri motion dec |
-041 |
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Sec motion dec |
-041 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 108693 |
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Constellation |
Canes Venatici |
|
SAO |
63020 |
|
HIP |
60920 |
|
Tycho2 |
2528-00473-1 |
|
Gaia DR2 |
4012517224274239360 |
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HD |
108693 |
|
ADS |
8569 |
|
BD |
BD+32 2250 |
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Distance |
173.61 |
|
Distance ly |
566.32 |
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ORBITAL ELEMENTS
Period (P) | 540.56y | |
Periastron (T) | 1894.33y | |
Semi-major axis (a) | 0.553a | |
Eccentricity (e) | 0.855 | |
Inclination (i) | 33.4° | |
Longitude of periastron (ω) | 96° | |
Node (Ω) | 165.1° | |
Notes | | |
Reference | Sca2003c | |
Equinox | 2000 | |
Last observation | 1997 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
58.2 |
0.636 |
2001 |
58.4 |
0.639 |
2002 |
58.6 |
0.641 |
2003 |
58.8 |
0.644 |
2004 |
59.0 |
0.647 |
2005 |
59.2 |
0.650 |
2006 |
59.4 |
0.653 |
2007 |
59.6 |
0.655 |
2008 |
59.9 |
0.658 |
2009 |
60.1 |
0.661 |
2010 |
60.3 |
0.663 |
2011 |
60.5 |
0.666 |
2012 |
60.7 |
0.669 |
2013 |
60.8 |
0.671 |
2014 |
61.0 |
0.674 |
2015 |
61.2 |
0.676 |
2016 |
61.4 |
0.679 |
2017 |
61.6 |
0.681 |
2018 |
61.8 |
0.684 |
2019 |
62.0 |
0.686 |
2020 |
62.2 |
0.689 |
2021 |
62.4 |
0.691 |
2022 |
62.6 |
0.694 |
2023 |
62.7 |
0.696 |
2024 |
62.9 |
0.698 |
2025 |
63.1 |
0.701 |
2026 |
63.3 |
0.703 |
2027 |
63.5 |
0.705 |
2028 |
63.6 |
0.708 |
2029 |
63.8 |
0.710 |
2030 |
64.0 |
0.712 |
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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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