19308+6337 HU 951
19h 30m 47.57s +63° 37' 04.3" P.A. 197.00 sep 0.2 mag 10.05,10.36 Sp F dist. 232.02 pc (756.85 l.y.)
| Coord 2000 |
19308+6337 |
|
Discov num |
HU 951 |
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Comp |
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Coord arcsec 2000 |
19 30 47.57 +63 37 04.3 |
|
| Date first |
1904 |
|
Date last |
2008 |
|
Obs |
22 |
|
| Pa first |
287 |
|
Pa last |
197 |
|
P.A. Now (θ) |
230.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.194 |
|
Sep. Now (ρ) |
0.203" |
|
| Mag pri |
10.05 |
|
Mag sec |
10.36 |
|
delta mag (ΔM) |
0.31 |
|
Spectral class |
F (yellow-white) |
|
| Pri motion ra |
+018 |
|
Sec motion ra |
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| Pri motion dec |
+002 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Draco |
|
HIP |
95955 |
|
Tycho2 |
4234-00238-1 |
|
ADS |
12577 |
|
| BD |
BD+63 1530 |
|
Distance |
232.02 |
|
Distance ly |
756.85 |
|
ORBITAL ELEMENTS
| Period (P) | 153.74y | |
Periastron (T) | 1967.84y | |
Semi-major axis (a) | 0.204a | |
| Eccentricity (e) | 0.225 | |
Inclination (i) | 32.3° | |
Longitude of periastron (ω) | 316.3° | |
| Node (Ω) | 126.2° | |
Notes | n | |
Reference | Hrt2014b | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
179.2 |
0.181 |
| 2001 |
181.7 |
0.181 |
| 2002 |
184.1 |
0.182 |
| 2003 |
186.5 |
0.182 |
| 2004 |
188.9 |
0.183 |
| 2005 |
191.3 |
0.184 |
| 2006 |
193.7 |
0.184 |
| 2007 |
196.0 |
0.185 |
| 2008 |
198.4 |
0.186 |
| 2009 |
200.7 |
0.187 |
| 2010 |
203.0 |
0.188 |
| 2011 |
205.3 |
0.189 |
| 2012 |
207.5 |
0.190 |
| 2013 |
209.7 |
0.191 |
| 2014 |
211.9 |
0.192 |
| 2015 |
214.1 |
0.193 |
| 2016 |
216.2 |
0.194 |
| 2017 |
218.4 |
0.195 |
| 2018 |
220.5 |
0.196 |
| 2019 |
222.5 |
0.198 |
| 2020 |
224.6 |
0.199 |
| 2021 |
226.6 |
0.200 |
| 2022 |
228.6 |
0.202 |
| 2023 |
230.5 |
0.203 |
| 2024 |
232.5 |
0.204 |
| 2025 |
234.4 |
0.206 |
| 2026 |
236.3 |
0.207 |
| 2027 |
238.1 |
0.209 |
| 2028 |
239.9 |
0.210 |
| 2029 |
241.8 |
0.212 |
| 2030 |
243.5 |
0.213 |
|
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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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