19579+4216 STT 392 AB
19h 57m 56.12s +42° 15' 38.9" P.A. 182.00 sep 0.1 mag 6.60,8.40 Sp A3V dist. 325.73 pc (1062.53 l.y.)
| Coord 2000 |
19579+4216 |
|
Discov num |
STT 392 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 57 56.12 +42 15 38.9 |
|
| Date first |
1843 |
|
Date last |
1998 |
|
Obs |
42 |
|
| Pa first |
324 |
|
Pa last |
182.3 |
|
P.A. Now (θ) |
128.8° (calc) |
|
| Sep first |
0.2 |
|
Sep last |
0.132 |
|
Sep. Now (ρ) |
0.111" (calc) |
|
| Mag pri |
6.60 |
|
Mag sec |
8.40 |
|
delta mag (ΔM) |
1.8 |
|
Spectral class |
A3V (white) |
|
| Pri motion ra |
-009 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
19579+4216 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
49031 |
19 57 56 +42 15 39 |
STT 392 AB |
1998 |
42 |
182 |
0.1 |
6.60 |
8.40 |
1.80 |
Y |
<=== |
| Show |
HD 189377 |
49031 |
19 57 56 +42 15 39 |
STF 2607 AB,C |
2021 |
63 |
287 |
2.9 |
6.56 |
9.09 |
2.53 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
49031 |
|
HIP |
98253 |
|
Tycho2 |
3145-01210-1 |
|
| Gaia DR2 |
2075470794651771776 |
|
HD |
189377 |
|
HR |
7638 |
|
ADS |
13186 |
|
| BD |
BD+41 3549 |
|
Distance |
325.73 |
|
Distance ly |
1062.53 |
|
ORBITAL ELEMENTS
| Period (P) | 270.3y | |
Periastron (T) | 2027y | |
Semi-major axis (a) | 0.26a | |
| Eccentricity (e) | 0.523 | |
Inclination (i) | 112.7° | |
Longitude of periastron (ω) | 34.1° | |
| Node (Ω) | 140.9° | |
Notes | n | |
Reference | Zir2010b | |
| Equinox | 2000 | |
Last observation | 1997 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
175.3 |
0.117 |
| 2001 |
173.2 |
0.119 |
| 2002 |
171.1 |
0.121 |
| 2003 |
169.2 |
0.123 |
| 2004 |
167.2 |
0.125 |
| 2005 |
165.4 |
0.127 |
| 2006 |
163.6 |
0.129 |
| 2007 |
161.8 |
0.130 |
| 2008 |
160.1 |
0.132 |
| 2009 |
158.4 |
0.133 |
| 2010 |
156.8 |
0.135 |
| 2011 |
155.1 |
0.136 |
| 2012 |
153.5 |
0.136 |
| 2013 |
151.9 |
0.137 |
| 2014 |
150.4 |
0.137 |
| 2015 |
148.8 |
0.137 |
| 2016 |
147.2 |
0.137 |
| 2017 |
145.6 |
0.136 |
| 2018 |
144.0 |
0.135 |
| 2019 |
142.4 |
0.133 |
| 2020 |
140.7 |
0.132 |
| 2021 |
138.9 |
0.129 |
| 2022 |
137.1 |
0.126 |
| 2023 |
135.2 |
0.123 |
| 2024 |
133.2 |
0.120 |
| 2025 |
131.1 |
0.115 |
| 2026 |
128.8 |
0.111 |
| 2027 |
126.3 |
0.106 |
| 2028 |
123.5 |
0.101 |
| 2029 |
120.4 |
0.096 |
| 2030 |
117.0 |
0.090 |
| 2031 |
113.1 |
0.085 |
| 2032 |
108.7 |
0.079 |
| 2033 |
103.6 |
0.074 |
| 2034 |
97.7 |
0.069 |
| 2035 |
91.0 |
0.064 |
| 2036 |
83.3 |
0.060 |
| 2037 |
74.8 |
0.058 |
| 2038 |
65.6 |
0.056 |
| 2039 |
56.1 |
0.056 |
| 2040 |
46.8 |
0.057 |
| 2041 |
38.0 |
0.059 |
| 2042 |
30.1 |
0.063 |
| 2043 |
23.1 |
0.067 |
| 2044 |
17.0 |
0.072 |
| 2045 |
11.7 |
0.078 |
| 2046 |
7.2 |
0.084 |
| 2047 |
3.3 |
0.090 |
| 2048 |
359.9 |
0.097 |
| 2049 |
357.0 |
0.104 |
| 2050 |
354.4 |
0.110 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
