18003+2154 A 1374 AB
18h 00m 17.93s +21° 53' 47.5" P.A. 210.00 sep 0.5 mag 8.90,10.90 Sp G0
Coord 2000 |
18003+2154 |
|
Discov num |
A 1374 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 00 17.93 +21 53 47.5 |
|
Date first |
1906 |
|
Date last |
2021 |
|
Obs |
38 |
|
Pa first |
10 |
|
Pa last |
210.1 |
|
P.A. Now (θ) |
210.1° |
|
Sep first |
0.7 |
|
Sep last |
0.522 |
|
Sep. Now (ρ) |
0.522" |
|
Mag pri |
8.90 |
|
Mag sec |
10.90 |
|
delta mag (ΔM) |
2 |
|
Spectral class |
G0 (yellow) |
|
Pri motion ra |
-030 |
|
Sec motion ra |
|
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Pri motion dec |
+014 |
|
Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
18003+2154 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
85624 |
18 00 18 +21 53 48 |
WSI 106 Aa,Ab |
2021 |
6 |
267 |
0.0 |
9.40 |
9.90 |
0.50 |
|
|
Show |
|
85624 |
18 00 18 +21 53 48 |
A 1374 AB |
2021 |
38 |
210 |
0.5 |
8.90 |
10.90 |
2.00 |
Y |
<=== |
Show |
HD 341480 |
85624 |
18 00 18 +21 53 48 |
LBU 6 AB,C |
2015 |
10 |
298 |
76.4 |
8.61 |
11.33 |
2.72 |
|
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Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Hercules |
|
SAO |
85624 |
|
Tycho2 |
1566-01708-1 |
|
Gaia DR2 |
4576215537102834048 |
|
HD |
341480 |
|
ADS |
10971 |
|
ORBITAL ELEMENTS SOLUTION #1
Period (P) | 139.53y | |
Periastron (T) | 1995.81y | |
Semi-major axis (a) | 0.504a | |
Eccentricity (e) | 0.806 | |
Inclination (i) | 136.7° | |
Longitude of periastron (ω) | 76° | |
Node (Ω) | 249° | |
Notes | n | |
Reference | Msn2017a | |
Equinox | 2000 | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
73.4 |
0.198 |
2001 |
67.2 |
0.229 |
2002 |
62.4 |
0.256 |
2003 |
58.5 |
0.282 |
2004 |
55.2 |
0.305 |
2005 |
52.4 |
0.326 |
2006 |
49.9 |
0.346 |
2007 |
47.6 |
0.365 |
2008 |
45.6 |
0.382 |
2009 |
43.8 |
0.398 |
2010 |
42.0 |
0.414 |
2011 |
40.5 |
0.429 |
2012 |
39.0 |
0.443 |
2013 |
37.6 |
0.456 |
2014 |
36.2 |
0.468 |
2015 |
35.0 |
0.480 |
2016 |
33.8 |
0.492 |
2017 |
32.7 |
0.502 |
2018 |
31.6 |
0.513 |
2019 |
30.5 |
0.523 |
2020 |
29.5 |
0.532 |
2021 |
28.5 |
0.541 |
2022 |
27.6 |
0.550 |
2023 |
26.6 |
0.558 |
2024 |
25.7 |
0.566 |
2025 |
24.9 |
0.574 |
2026 |
24.0 |
0.581 |
2027 |
23.2 |
0.588 |
2028 |
22.4 |
0.594 |
2029 |
21.6 |
0.601 |
2030 |
20.8 |
0.607 |
|
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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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ORBITAL ELEMENTS SOLUTION #2
Period (P) | 497y | ± 222 |
Periastron (T) | 1978.1y | ± 3.1 |
Semi-major axis (a) | 0.98a | ± 0.24 |
Eccentricity (e) | 0.41 | ± 0.18 |
Inclination (i) | 124.1° | ± 2 |
Longitude of periastron (ω) | 233° | ± 9 |
Node (Ω) | 166° | ± 5.2 |
Notes | n | |
Reference | Mdz2017 | |
Equinox | 2000 | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
251.3 |
0.348 |
2001 |
248.4 |
0.352 |
2002 |
245.5 |
0.356 |
2003 |
242.7 |
0.360 |
2004 |
240.0 |
0.365 |
2005 |
237.4 |
0.371 |
2006 |
234.9 |
0.378 |
2007 |
232.4 |
0.385 |
2008 |
230.1 |
0.392 |
2009 |
227.8 |
0.400 |
2010 |
225.6 |
0.408 |
2011 |
223.5 |
0.416 |
2012 |
221.5 |
0.425 |
2013 |
219.6 |
0.434 |
2014 |
217.7 |
0.444 |
2015 |
216.0 |
0.453 |
2016 |
214.3 |
0.463 |
2017 |
212.7 |
0.473 |
2018 |
211.1 |
0.483 |
2019 |
209.6 |
0.494 |
2020 |
208.2 |
0.504 |
2021 |
206.8 |
0.514 |
2022 |
205.5 |
0.525 |
2023 |
204.2 |
0.536 |
2024 |
203.0 |
0.546 |
2025 |
201.8 |
0.557 |
2026 |
200.7 |
0.568 |
2027 |
199.6 |
0.578 |
2028 |
198.6 |
0.589 |
2029 |
197.6 |
0.600 |
2030 |
196.6 |
0.610 |
|
|
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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