18002+8000 BAG 6 Aa,Ab
18h 00m 09.07s +80° 00' 13.7" P.A. 316.00 sep 0.1 mag 6.22,6.69 Sp F7V+F7V dist. 63.53 pc (207.23 l.y.)
| Coord 2000 |
18002+8000 |
|
Discov num |
BAG 6 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
18 00 09.07 +80 00 13.7 |
|
| Date first |
1993 |
|
Date last |
2012 |
|
Obs |
31 |
|
| Pa first |
320 |
|
Pa last |
315.8 |
|
P.A. Now (θ) |
317.5° |
|
| Sep first |
0.1 |
|
Sep last |
0.102 |
|
Sep. Now (ρ) |
0.099" |
|
| Mag pri |
6.22 |
|
Mag sec |
6.69 |
|
delta mag (ΔM) |
0.47 |
|
Spectral class |
F7V+F7V (yellow-white/yellow-white) |
|
| Pri motion ra |
+039 |
|
Sec motion ra |
|
|
| Pri motion dec |
+125 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
18002+8000 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
8996 |
18 00 09 +80 00 14 |
BAG 6 Aa,Ab |
2012 |
31 |
316 |
0.1 |
6.22 |
6.69 |
0.47 |
Y |
<=== |
| Show |
41 Dra |
8996 |
18 00 09 +80 00 14 |
STF 2308 AB |
2022 |
184 |
232 |
18.9 |
5.70 |
6.00 |
0.30 |
Y |
|
| Show |
|
8996 |
18 00 09 +80 00 14 |
STF 2308 AC |
2017 |
17 |
129 |
225.3 |
5.70 |
8.34 |
2.64 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV10205 Dra |
|
Constellation |
Draco |
|
SAO |
8996 |
|
HIP |
88136 |
|
| Tycho2 |
4578-01433-1 |
|
Gaia DR2 |
2294405824838599808 |
|
HD |
166866 |
|
HR |
6810 |
|
| GC |
24669 |
|
ADS |
11061 |
|
BD |
BD+79 571 |
|
Flamsteed |
41 Draconis |
|
| Flamsteed name |
41 Dra |
|
Distance |
63.53 |
|
Distance ly |
207.23 |
|
ORBITAL ELEMENTS
| Period (P) | 1246.68d (3.41y) | ± 0.004 |
Periastron (T) | 49571.037d (1994.597y) | ± 0.008 |
Semi-major axis (a) | 0.0706a | ± 0.0014 |
| Eccentricity (e) | 0.9754 | ± 0.0001 |
Inclination (i) | 49.7° | ± 2.9 |
Longitude of periastron (ω) | 127.31° | ± 0.13 |
| Node (Ω) | 1.9° | ± 1.7 |
Notes | n | |
Reference | Tok2003 | |
| Equinox | | |
Last observation | 2001 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
323.3 |
0.110 |
| 2001-01-01 |
331.7 |
0.071 |
| 2002-01-01 |
312.2 |
0.072 |
| 2003-01-01 |
320.8 |
0.110 |
| 2004-01-01 |
327.3 |
0.096 |
| 2005-01-01 |
190.9 |
0.002 |
| 2006-01-01 |
318.0 |
0.101 |
| 2007-01-01 |
324.4 |
0.108 |
| 2008-01-01 |
335.1 |
0.054 |
| 2009-01-01 |
314.4 |
0.083 |
| 2010-01-01 |
321.8 |
0.111 |
| 2011-01-01 |
328.9 |
0.087 |
| 2012-01-01 |
307.5 |
0.052 |
| 2013-01-01 |
319.2 |
0.106 |
| 2014-01-01 |
325.5 |
0.104 |
| 2015-01-01 |
343.6 |
0.027 |
| 2016-01-01 |
316.1 |
0.092 |
| 2017-01-01 |
322.9 |
0.111 |
| 2018-01-01 |
330.8 |
0.076 |
| 2019-01-01 |
311.2 |
0.067 |
| 2020-01-01 |
320.4 |
0.109 |
| 2021-01-01 |
326.8 |
0.099 |
| 2022-01-01 |
280.2 |
0.013 |
| 2023-01-01 |
317.5 |
0.099 |
| 2024-01-01 |
324.0 |
0.109 |
| 2025-01-01 |
333.6 |
0.061 |
| 2026-01-01 |
313.6 |
0.079 |
| 2027-01-01 |
321.4 |
0.111 |
| 2028-01-01 |
328.2 |
0.091 |
| 2029-01-01 |
305.4 |
0.045 |
| 2030-01-01 |
318.8 |
0.104 |
|
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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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