19021+5216 HU 757 BC
19h 02m 06.53s +52° 15' 42.3" P.A. 168.00 sep 0.2 mag 10.30,10.40 Sp G8III: dist. 214.13 pc (698.49 l.y.)
Coord 2000 |
19021+5216 |
|
Discov num |
HU 757 |
|
Comp |
BC |
|
Coord arcsec 2000 |
19 02 06.53 +52 15 42.3 |
|
Date first |
1904 |
|
Date last |
2010 |
|
Obs |
15 |
|
Pa first |
93 |
|
Pa last |
167.9 |
|
P.A. Now (θ) |
167.9° |
|
Sep first |
0.2 |
|
Sep last |
0.18 |
|
Sep. Now (ρ) |
0.18" |
|
Mag pri |
10.30 |
|
Mag sec |
10.40 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
G8III: (yellow) |
|
Pri motion ra |
-008 |
|
Sec motion ra |
-008 |
|
Pri motion dec |
-033 |
|
Sec motion dec |
-033 |
|
Notes |
O
(Orbital solution) |
|
This double is physical.
19021+5216 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 177483 |
31337 |
19 02 07 +52 15 40 |
STF 2450 A,BC |
2021 |
28 |
300 |
5.2 |
6.50 |
9.51 |
3.01 |
|
|
Show |
|
31337 |
19 02 07 +52 15 42 |
HU 757 BC |
2010 |
15 |
168 |
0.2 |
10.30 |
10.40 |
0.10 |
Y |
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Draco |
|
SAO |
31337 |
|
HIP |
93466 |
|
Tycho2 |
3553-01598-1 |
|
Gaia DR2 |
2134442516679430272 |
|
HD |
177483 |
|
HR |
7229 |
|
ADS |
11979 |
|
BD |
BD+52 2326 |
|
Distance |
214.13 |
|
Distance ly |
698.49 |
|
ORBITAL ELEMENTS
Period (P) | 115.9y | |
Periastron (T) | 1991.06y | |
Semi-major axis (a) | 0.234a | |
Eccentricity (e) | 0.284 | |
Inclination (i) | 115° | |
Longitude of periastron (ω) | 217.4° | |
Node (Ω) | 84.6° | |
Notes | | |
Reference | Sca2001c | |
Equinox | 2000 | |
Last observation | 1998 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
182.7 |
0.077 |
2001 |
171.2 |
0.078 |
2002 |
160.3 |
0.081 |
2003 |
150.5 |
0.087 |
2004 |
142.0 |
0.094 |
2005 |
134.8 |
0.103 |
2006 |
128.8 |
0.112 |
2007 |
123.8 |
0.122 |
2008 |
119.5 |
0.132 |
2009 |
115.8 |
0.142 |
2010 |
112.6 |
0.152 |
2011 |
109.8 |
0.162 |
2012 |
107.4 |
0.172 |
2013 |
105.2 |
0.182 |
2014 |
103.2 |
0.191 |
2015 |
101.4 |
0.200 |
2016 |
99.7 |
0.208 |
2017 |
98.2 |
0.216 |
2018 |
96.8 |
0.223 |
2019 |
95.4 |
0.231 |
2020 |
94.2 |
0.237 |
2021 |
93.0 |
0.243 |
2022 |
91.8 |
0.249 |
2023 |
90.7 |
0.254 |
2024 |
89.7 |
0.259 |
2025 |
88.7 |
0.264 |
2026 |
87.7 |
0.268 |
2027 |
86.8 |
0.271 |
2028 |
85.8 |
0.274 |
2029 |
84.9 |
0.277 |
2030 |
84.0 |
0.279 |
|
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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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