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 |
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Discov num |
HU 951 |
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Comp |
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Coord arcsec 2000 |
19 30 47.57 +63 37 04.3 |
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Date first |
1904 |
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Date last |
2008 |
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Obs |
22 |
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Pa first |
287 |
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Pa last |
197 |
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P.A. Now (θ) |
230.5° |
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Sep first |
0.2 |
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Sep last |
0.194 |
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Sep. Now (ρ) |
0.203" |
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Mag pri |
10.05 |
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Mag sec |
10.36 |
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delta mag (ΔM) |
0.31 |
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Spectral class |
F (yellow-white) |
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Pri motion ra |
+018 |
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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 |
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HIP |
95955 |
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Tycho2 |
4234-00238-1 |
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ADS |
12577 |
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BD |
BD+63 1530 |
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Distance |
232.02 |
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Distance ly |
756.85 |
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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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