19406+6240 STF 2574 (HD 186453)
19h 40m 34.80s +62° 39' 53.4" P.A. 94.00 sep 0.6 mag 7.73,8.91 Sp F8V dist. 128.53 pc (419.26 l.y.)
| Coord 2000 |
19406+6240 |
|
Discov num |
STF2574 |
|
Comp |
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Coord arcsec 2000 |
19 40 34.80 +62 39 53.4 |
|
| Date first |
1831 |
|
Date last |
2020 |
|
Obs |
98 |
|
| Pa first |
314 |
|
Pa last |
93.8 |
|
P.A. Now (θ) |
93.8° |
|
| Sep first |
1.5 |
|
Sep last |
0.61 |
|
Sep. Now (ρ) |
0.61" |
|
| Mag pri |
7.73 |
|
Mag sec |
8.91 |
|
delta mag (ΔM) |
1.18 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
+026 |
|
Sec motion ra |
+026 |
|
| Pri motion dec |
+111 |
|
Sec motion dec |
+111 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 186453 |
|
Constellation |
Draco |
|
SAO |
18469 |
|
HIP |
96796 |
|
| Tycho2 |
4234-01631-1 |
|
HD |
186453 |
|
GC |
27266 |
|
ADS |
12803 |
|
| BD |
BD+62 1747 |
|
Distance |
128.53 |
|
Distance ly |
419.26 |
|
ORBITAL ELEMENTS
| Period (P) | 685.13y | |
Periastron (T) | 2057.26y | |
Semi-major axis (a) | 1.302a | |
| Eccentricity (e) | 0.67 | |
Inclination (i) | 78.9° | |
Longitude of periastron (ω) | 48.2° | |
| Node (Ω) | 107.6° | |
Notes | | |
Reference | Zir2010 | |
| Equinox | 2000 | |
Last observation | 1999 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
87.8 |
0.467 |
| 2001 |
88.4 |
0.472 |
| 2002 |
89.0 |
0.477 |
| 2003 |
89.5 |
0.481 |
| 2004 |
90.1 |
0.486 |
| 2005 |
90.6 |
0.491 |
| 2006 |
91.1 |
0.495 |
| 2007 |
91.7 |
0.499 |
| 2008 |
92.2 |
0.503 |
| 2009 |
92.7 |
0.507 |
| 2010 |
93.2 |
0.511 |
| 2011 |
93.6 |
0.515 |
| 2012 |
94.1 |
0.519 |
| 2013 |
94.6 |
0.522 |
| 2014 |
95.0 |
0.526 |
| 2015 |
95.5 |
0.529 |
| 2016 |
96.0 |
0.532 |
| 2017 |
96.4 |
0.535 |
| 2018 |
96.8 |
0.538 |
| 2019 |
97.3 |
0.540 |
| 2020 |
97.7 |
0.542 |
| 2021 |
98.1 |
0.544 |
| 2022 |
98.6 |
0.546 |
| 2023 |
99.0 |
0.547 |
| 2024 |
99.4 |
0.549 |
| 2025 |
99.8 |
0.549 |
| 2026 |
100.3 |
0.550 |
| 2027 |
100.7 |
0.550 |
| 2028 |
101.1 |
0.550 |
| 2029 |
101.5 |
0.550 |
| 2030 |
102.0 |
0.549 |
|
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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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