18003+2154 A 1374 AB
18h 00m 17.93s +21° 53' 47.5" P.A. 207.00 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 |
2022 |
|
Obs |
43 |
|
| Pa first |
10 |
|
Pa last |
206.9 |
|
P.A. Now (θ) |
210.1° |
|
| Sep first |
0.7 |
|
Sep last |
0.526 |
|
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 |
|
|
| Pri motion dec |
+014 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
2023 |
9 |
200 |
0.0 |
9.40 |
9.90 |
0.50 |
Y |
|
| Show |
|
85624 |
18 00 18 +21 53 48 |
A 1374 AB |
2022 |
43 |
207 |
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 |
|
|
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 | USN2017b | |
| 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 |
| 2031 |
20.1 |
0.612 |
| 2032 |
19.3 |
0.618 |
| 2033 |
18.6 |
0.623 |
| 2034 |
17.9 |
0.628 |
| 2035 |
17.2 |
0.633 |
| 2036 |
16.5 |
0.637 |
| 2037 |
15.8 |
0.641 |
| 2038 |
15.1 |
0.645 |
| 2039 |
14.4 |
0.649 |
| 2040 |
13.7 |
0.653 |
| 2041 |
13.1 |
0.656 |
| 2042 |
12.4 |
0.659 |
| 2043 |
11.8 |
0.662 |
| 2044 |
11.1 |
0.665 |
| 2045 |
10.5 |
0.667 |
| 2046 |
9.9 |
0.669 |
| 2047 |
9.2 |
0.672 |
| 2048 |
8.6 |
0.674 |
| 2049 |
8.0 |
0.675 |
| 2050 |
7.4 |
0.677 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
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 |
| 2031 |
195.7 |
0.621 |
| 2032 |
194.8 |
0.631 |
| 2033 |
193.9 |
0.642 |
| 2034 |
193.0 |
0.652 |
| 2035 |
192.2 |
0.663 |
| 2036 |
191.4 |
0.673 |
| 2037 |
190.6 |
0.683 |
| 2038 |
189.9 |
0.693 |
| 2039 |
189.2 |
0.703 |
| 2040 |
188.4 |
0.713 |
| 2041 |
187.8 |
0.723 |
| 2042 |
187.1 |
0.733 |
| 2043 |
186.4 |
0.743 |
| 2044 |
185.8 |
0.752 |
| 2045 |
185.2 |
0.762 |
| 2046 |
184.6 |
0.771 |
| 2047 |
184.0 |
0.780 |
| 2048 |
183.4 |
0.790 |
| 2049 |
182.8 |
0.799 |
| 2050 |
182.3 |
0.808 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
