12006+6911 A 1088 (OR Dra)
12h 00m 37.54s +69° 11' 07.8" P.A. 2.00 sep 0.2 mag 7.88,8.81 Sp F2V dist. 206.19 pc (672.59 l.y.)
Coord 2000 |
12006+6911 |
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Discov num |
A 1088 |
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Comp |
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Coord arcsec 2000 |
12 00 37.54 +69 11 07.8 |
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Date first |
1905 |
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Date last |
2010 |
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Obs |
37 |
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Pa first |
223 |
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Pa last |
2.1 |
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P.A. Now (θ) |
209.1° |
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Sep first |
0.3 |
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Sep last |
0.179 |
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Sep. Now (ρ) |
0.176" |
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Mag pri |
7.88 |
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Mag sec |
8.81 |
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delta mag (ΔM) |
0.93 |
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Spectral class |
F2V (yellow-white) |
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Pri motion ra |
-019 |
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Sec motion ra |
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Pri motion dec |
-012 |
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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
Var name |
OR Dra |
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Constellation |
Draco |
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SAO |
15686 |
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HIP |
58567 |
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Tycho2 |
4393-00948-1 |
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Gaia DR2 |
1682085256709072256 |
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HD |
104288 |
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GC |
16418 |
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ADS |
8387 |
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BD |
BD+69 636 |
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Distance |
206.19 |
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Distance ly |
672.59 |
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ORBITAL ELEMENTS
Period (P) | 134.9y | |
Periastron (T) | 2017.3y | |
Semi-major axis (a) | 0.356a | |
Eccentricity (e) | 0.805 | |
Inclination (i) | 75.5° | |
Longitude of periastron (ω) | 67.3° | |
Node (Ω) | 29.5° | |
Notes | n | |
Reference | USN2002 | |
Equinox | 2000 | |
Last observation | 1993 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
340.7 |
0.119 |
2001 |
344.2 |
0.121 |
2002 |
347.6 |
0.123 |
2003 |
350.9 |
0.125 |
2004 |
354.0 |
0.127 |
2005 |
357.1 |
0.129 |
2006 |
0.1 |
0.131 |
2007 |
3.0 |
0.132 |
2008 |
5.9 |
0.133 |
2009 |
8.7 |
0.134 |
2010 |
11.5 |
0.134 |
2011 |
14.3 |
0.132 |
2012 |
17.2 |
0.130 |
2013 |
20.3 |
0.124 |
2014 |
23.8 |
0.115 |
2015 |
28.1 |
0.101 |
2016 |
34.4 |
0.078 |
2017 |
49.1 |
0.043 |
2018 |
140.2 |
0.020 |
2019 |
191.0 |
0.056 |
2020 |
200.4 |
0.094 |
2021 |
204.6 |
0.126 |
2022 |
207.2 |
0.153 |
2023 |
209.1 |
0.176 |
2024 |
210.5 |
0.196 |
2025 |
211.7 |
0.214 |
2026 |
212.7 |
0.230 |
2027 |
213.6 |
0.244 |
2028 |
214.4 |
0.256 |
2029 |
215.2 |
0.268 |
2030 |
215.8 |
0.278 |
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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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