21026+2141 BU 69 AB (HD 200392)
21h 02m 36.08s +21° 41' 28.2" P.A. 6.00 sep 0.4 mag 8.35,9.80 Sp F0 dist. 73.64 pc (240.21 l.y.)
| Coord 2000 |
21026+2141 |
|
Discov num |
BU 69 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 02 36.08 +21 41 28.2 |
|
| Date first |
1872 |
|
Date last |
2017 |
|
Obs |
62 |
|
| Pa first |
350 |
|
Pa last |
5.9 |
|
P.A. Now (θ) |
5.9° |
|
| Sep first |
2.0 |
|
Sep last |
0.38 |
|
Sep. Now (ρ) |
0.38" |
|
| Mag pri |
8.35 |
|
Mag sec |
9.80 |
|
delta mag (ΔM) |
1.45 |
|
Spectral class |
F0 (yellow-white) |
|
| Pri motion ra |
+040 |
|
Sec motion ra |
+040 |
|
| Pri motion dec |
-033 |
|
Sec motion dec |
-033 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
21026+2141 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 200392 |
89397 |
21 02 36 +21 41 28 |
BU 69 AB |
2017 |
62 |
6 |
0.4 |
8.35 |
9.80 |
1.45 |
Y |
<=== |
| Show |
|
89397 |
21 02 36 +21 41 28 |
BU 69 AC |
2017 |
32 |
241 |
74.6 |
8.35 |
8.02 |
0.33 |
|
|
| Show |
|
89395 |
21 02 31 +21 40 51 |
HO 599 CD |
2015 |
16 |
174 |
18.0 |
8.02 |
13.53 |
5.51 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200392 |
|
Constellation |
Vulpecula |
|
SAO |
89397 |
|
HIP |
103852 |
|
| Tycho2 |
1660-00673-1 |
|
Gaia DR2 |
1838333516943212032 |
|
HD |
200392 |
|
ADS |
14570 |
|
| BD |
BD+21 4445 |
|
Distance |
73.64 |
|
Distance ly |
240.21 |
|
ORBITAL ELEMENTS
| Period (P) | 443y | |
Periastron (T) | 2256y | |
Semi-major axis (a) | 0.996a | |
| Eccentricity (e) | 0.4 | |
Inclination (i) | 76.9° | |
Longitude of periastron (ω) | 88.7° | |
| Node (Ω) | 127.9° | |
Notes | | |
Reference | Zir2014a | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
349.0 |
0.457 |
| 2001 |
349.8 |
0.451 |
| 2002 |
350.6 |
0.445 |
| 2003 |
351.5 |
0.439 |
| 2004 |
352.4 |
0.434 |
| 2005 |
353.3 |
0.428 |
| 2006 |
354.2 |
0.422 |
| 2007 |
355.2 |
0.416 |
| 2008 |
356.1 |
0.411 |
| 2009 |
357.1 |
0.406 |
| 2010 |
358.2 |
0.400 |
| 2011 |
359.2 |
0.395 |
| 2012 |
0.3 |
0.390 |
| 2013 |
1.4 |
0.385 |
| 2014 |
2.6 |
0.380 |
| 2015 |
3.8 |
0.375 |
| 2016 |
5.0 |
0.371 |
| 2017 |
6.2 |
0.366 |
| 2018 |
7.5 |
0.362 |
| 2019 |
8.8 |
0.358 |
| 2020 |
10.1 |
0.354 |
| 2021 |
11.4 |
0.350 |
| 2022 |
12.8 |
0.346 |
| 2023 |
14.2 |
0.343 |
| 2024 |
15.7 |
0.339 |
| 2025 |
17.1 |
0.336 |
| 2026 |
18.6 |
0.333 |
| 2027 |
20.1 |
0.331 |
| 2028 |
21.7 |
0.328 |
| 2029 |
23.3 |
0.326 |
| 2030 |
24.8 |
0.324 |
|
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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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