20537+5918 A 751 (HD 199306)
20h 53m 41.31s +59° 18' 27.7" P.A. 52.00 sep 0.2 mag 7.66,7.96 Sp F1V+F3V dist. 119.9 pc (391.11 l.y.)
Coord 2000 |
20537+5918 |
|
Discov num |
A 751 |
|
Comp |
|
|
Coord arcsec 2000 |
20 53 41.31 +59 18 27.7 |
|
Date first |
1904 |
|
Date last |
2011 |
|
Obs |
81 |
|
Pa first |
34 |
|
Pa last |
52.4 |
|
P.A. Now (θ) |
21.8° |
|
Sep first |
0.2 |
|
Sep last |
0.195 |
|
Sep. Now (ρ) |
0.162" |
|
Mag pri |
7.66 |
|
Mag sec |
7.96 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F1V+F3V (yellow-white/yellow-white) |
|
Pri motion ra |
+037 |
|
Sec motion ra |
|
|
Pri motion dec |
-021 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 199306 |
|
Constellation |
Cepheus |
|
SAO |
32976 |
|
HIP |
103130 |
|
Tycho2 |
3964-01130-1 |
|
Gaia DR2 |
2190848700139092224 |
|
HD |
199306 |
|
GC |
29181 |
|
ADS |
14412 |
|
BD |
BD+58 2187 |
|
Distance |
119.9 |
|
Distance ly |
391.11 |
|
ORBITAL ELEMENTS
Period (P) | 56.87y | |
Periastron (T) | 1976.04y | |
Semi-major axis (a) | 0.169a | |
Eccentricity (e) | 0.591 | |
Inclination (i) | 130.6° | |
Longitude of periastron (ω) | 276.2° | |
Node (Ω) | 177.3° | |
Notes | n | |
Reference | Sca2013b | |
Equinox | 2000 | |
Last observation | 2011 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
91.8 |
0.172 |
2001 |
88.6 |
0.173 |
2002 |
85.5 |
0.174 |
2003 |
82.4 |
0.175 |
2004 |
79.3 |
0.176 |
2005 |
76.2 |
0.177 |
2006 |
73.2 |
0.178 |
2007 |
70.2 |
0.178 |
2008 |
67.2 |
0.179 |
2009 |
64.3 |
0.180 |
2010 |
61.4 |
0.180 |
2011 |
58.5 |
0.181 |
2012 |
55.6 |
0.181 |
2013 |
52.7 |
0.181 |
2014 |
49.8 |
0.181 |
2015 |
46.9 |
0.181 |
2016 |
44.0 |
0.180 |
2017 |
41.0 |
0.179 |
2018 |
38.0 |
0.178 |
2019 |
35.0 |
0.176 |
2020 |
31.9 |
0.173 |
2021 |
28.7 |
0.170 |
2022 |
25.3 |
0.167 |
2023 |
21.8 |
0.162 |
2024 |
18.1 |
0.157 |
2025 |
14.0 |
0.150 |
2026 |
9.6 |
0.142 |
2027 |
4.5 |
0.132 |
2028 |
358.5 |
0.120 |
2029 |
351.0 |
0.105 |
2030 |
340.9 |
0.088 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|