19083+2706 HO 98 AB
19h 08m 16.19s +27° 05' 39.3" P.A. 61.00 sep 0.2 mag 8.28,8.30 Sp A0 dist. 359.71 pc (1173.37 l.y.)
| Coord 2000 |
19083+2706 |
|
Discov num |
HO 98 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 08 16.19 +27 05 39.3 |
|
| Date first |
1886 |
|
Date last |
2016 |
|
Obs |
78 |
|
| Pa first |
164 |
|
Pa last |
61.4 |
|
P.A. Now (θ) |
61.4° |
|
| Sep first |
0.3 |
|
Sep last |
0.209 |
|
Sep. Now (ρ) |
0.209" |
|
| Mag pri |
8.28 |
|
Mag sec |
8.30 |
|
delta mag (ΔM) |
0.02 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
-019 |
|
Sec motion ra |
|
|
| Pri motion dec |
-005 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
19083+2706 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
86855 |
19 08 16 +27 05 39 |
HO 98 AB |
2016 |
78 |
61 |
0.2 |
8.28 |
8.30 |
0.02 |
Y |
<=== |
| Show |
HD 178617 |
86855 |
19 08 16 +27 05 39 |
HO 98 AB,C |
2015 |
8 |
107 |
28.4 |
7.55 |
12.20 |
4.65 |
|
|
| Show |
|
86855 |
19 08 16 +27 05 39 |
WAL 104 AB,D |
2014 |
5 |
18 |
91.6 |
7.55 |
11.10 |
3.55 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
SAO |
86855 |
|
HIP |
93994 |
|
Tycho2 |
2131-01445-1 |
|
| HD |
178617 |
|
ADS |
12079 |
|
BD |
BD+26 3458 |
|
Distance |
359.71 |
|
| Distance ly |
1173.37 |
|
ORBITAL ELEMENTS
| Period (P) | 628y | ± 204 |
Periastron (T) | 2022.21y | ± 10.37 |
Semi-major axis (a) | 0.433a | ± 0.088 |
| Eccentricity (e) | 0.497 | ± 0.013 |
Inclination (i) | 123° | ± 2.2 |
Longitude of periastron (ω) | 54.2° | ± 20.7 |
| Node (Ω) | 83.1° | ± 7 |
Notes | | |
Reference | Lin2012a | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
75.9 |
0.233 |
| 2001 |
75.0 |
0.230 |
| 2002 |
74.0 |
0.227 |
| 2003 |
73.0 |
0.225 |
| 2004 |
72.0 |
0.222 |
| 2005 |
70.9 |
0.219 |
| 2006 |
69.9 |
0.216 |
| 2007 |
68.8 |
0.212 |
| 2008 |
67.6 |
0.209 |
| 2009 |
66.4 |
0.206 |
| 2010 |
65.2 |
0.203 |
| 2011 |
64.0 |
0.199 |
| 2012 |
62.7 |
0.196 |
| 2013 |
61.3 |
0.192 |
| 2014 |
59.9 |
0.189 |
| 2015 |
58.4 |
0.185 |
| 2016 |
56.9 |
0.182 |
| 2017 |
55.4 |
0.178 |
| 2018 |
53.7 |
0.174 |
| 2019 |
52.0 |
0.171 |
| 2020 |
50.2 |
0.167 |
| 2021 |
48.4 |
0.164 |
| 2022 |
46.5 |
0.160 |
| 2023 |
44.4 |
0.157 |
| 2024 |
42.3 |
0.154 |
| 2025 |
40.1 |
0.150 |
| 2026 |
37.8 |
0.147 |
| 2027 |
35.5 |
0.144 |
| 2028 |
33.0 |
0.142 |
| 2029 |
30.4 |
0.139 |
| 2030 |
27.7 |
0.137 |
|
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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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