17472+1502 HU 1288 (HD 161819)
17h 47m 09.16s +15° 02' 13.8" P.A. 163.00 sep 0.4 mag 8.31,9.37 Sp A0 dist. 311.53 pc (1016.21 l.y.)
| Coord 2000 |
17472+1502 |
|
Discov num |
HU 1288 |
|
Comp |
|
|
Coord arcsec 2000 |
17 47 09.16 +15 02 13.8 |
|
| Date first |
1905 |
|
Date last |
2016 |
|
Obs |
47 |
|
| Pa first |
116 |
|
Pa last |
162.9 |
|
P.A. Now (θ) |
162.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.435 |
|
Sep. Now (ρ) |
0.435" |
|
| Mag pri |
8.31 |
|
Mag sec |
9.37 |
|
delta mag (ΔM) |
1.06 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
+001 |
|
| Pri motion dec |
-010 |
|
Sec motion dec |
-010 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 161819 |
|
Constellation |
Hercules |
|
SAO |
103105 |
|
HIP |
87047 |
|
| Tycho2 |
1552-00152-1 |
|
HD |
161819 |
|
ADS |
10796 |
|
BD |
BD+15 3270 |
|
| Distance |
311.53 |
|
Distance ly |
1016.21 |
|
ORBITAL ELEMENTS
| Period (P) | 765y | |
Periastron (T) | 2005y | |
Semi-major axis (a) | 0.519a | |
| Eccentricity (e) | 0.16 | |
Inclination (i) | 64.5° | |
Longitude of periastron (ω) | 355.1° | |
| Node (Ω) | 159.5° | |
Notes | | |
Reference | Zir2015a | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
156.0 |
0.432 |
| 2001 |
156.2 |
0.433 |
| 2002 |
156.5 |
0.433 |
| 2003 |
156.8 |
0.434 |
| 2004 |
157.1 |
0.434 |
| 2005 |
157.4 |
0.435 |
| 2006 |
157.7 |
0.435 |
| 2007 |
158.0 |
0.435 |
| 2008 |
158.2 |
0.436 |
| 2009 |
158.5 |
0.436 |
| 2010 |
158.8 |
0.436 |
| 2011 |
159.1 |
0.436 |
| 2012 |
159.4 |
0.436 |
| 2013 |
159.7 |
0.436 |
| 2014 |
159.9 |
0.436 |
| 2015 |
160.2 |
0.436 |
| 2016 |
160.5 |
0.436 |
| 2017 |
160.8 |
0.436 |
| 2018 |
161.1 |
0.436 |
| 2019 |
161.4 |
0.436 |
| 2020 |
161.6 |
0.436 |
| 2021 |
161.9 |
0.435 |
| 2022 |
162.2 |
0.435 |
| 2023 |
162.5 |
0.435 |
| 2024 |
162.8 |
0.434 |
| 2025 |
163.1 |
0.434 |
| 2026 |
163.4 |
0.433 |
| 2027 |
163.6 |
0.433 |
| 2028 |
163.9 |
0.432 |
| 2029 |
164.2 |
0.432 |
| 2030 |
164.5 |
0.431 |
|
|
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 |
|
WDS 17472+1502 HU 1288 (HD 161819) : NOTES
No records found.
REFERENCES
| refcode |
metd |
author |
reference |
| Zir2015a |
orb - |
Zirm, H. |
2015IAUDS.185....1Z |
| Zir2015a |
|
Inf. Circ. 185, 1, 2015 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
HU |
Hussey, W.F. |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 17472+1502 |
HU 1288 |
|
1995 |
40 |
156 |
0.4 |
8.31 |
9.37 |
A0 |
D |
174709.16+150213.8 |
| 17472+1502 |
HU 1288 |
|
2010 |
41 |
163 |
0.4 |
8.31 |
9.37 |
A0 |
D |
174709.16+150213.8 |
| 17472+1502 |
HU 1288 |
|
2016 |
44 |
163 |
0.4 |
8.31 |
9.37 |
A0 |
O |
174709.16+150213.8 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 17472+1502 HU 1288 (HD 161819) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 17472+1502 HU 1288 (HD 161819) : MEASURES
No records found.
WDS 17472+1502 (HD 161819) : VIRTUAL EYEPIECE
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WDS 17472+1502 (HD 161819) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
