01166+1831 HDS 169

 
 
01H 16M 36.45S +18 31' 21.6" P.A. 229.3 SEP 0.61 MAG 8.61,12.20 SP G5 DIST. 63.86 PC (208.31 L.Y.)
 
 
Coord 2000
01166+1831
Discov num
HDS 169
Comp
Coord arcsec 2000
01 16 36.45 +18 31 21.6
Date first
1991
Date last
2013
Obs
11
Pa first
264
Pa last
234
P.A. Now (θ)
229.3°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.61"
Mag pri
8.61
Mag sec
12.20
delta mag (ΔM)
3.59
Spectral class
G5 (yellow)
Pri motion ra
+282
Sec motion ra
Pri motion dec
+020
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
SAO
92344
HIP
5952
Tycho2
1200-01141-1
HD
7640
BD
BD+17 176
Distance
63.86
Distance ly
208.31
last precise pa
234.2
last precise sep
0.604
 
 
ORBITAL ELEMENTS
 
 
Period (P)143.73y Periastron (T)2115.16y Semi-major axis (a)0.767a
Eccentricity (e)0.575 Inclination (i)118.3° Longitude of periastron (ω)93.9°
Node (Ω)102.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.647 253.7
2001 0.647 252.4
2002 0.646 251.0
2003 0.645 249.6
2004 0.643 248.3
2005 0.641 246.9
2006 0.639 245.5
2007 0.637 244.1
2008 0.634 242.7
2009 0.631 241.2
2010 0.628 239.8
2011 0.625 238.3
2012 0.622 236.9
2013 0.619 235.4
2014 0.616 233.9
2015 0.613 232.4
2016 0.609 230.8
2017 0.606 229.3
2018 0.603 227.7
2019 0.600 226.1
2020 0.597 224.5
2021 0.594 222.9
2022 0.591 221.3
2023 0.588 219.7
2024 0.585 218.0
2025 0.583 216.3
2026 0.581 214.6
2027 0.579 212.9
2028 0.577 211.2
2029 0.575 209.5
2030 0.574 207.8

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic