01158+0947 A  2102

 
 
01H 15M 46.78S +09 47' 05.3" P.A. 102.4 SEP 0.23 MAG 7.36,9.89 SP F4V DIST. 57.41 PC (187.27 L.Y.)
 
 
Coord 2000
01158+0947
Discov num
A  2102
Comp
Coord arcsec 2000
01 15 46.78 +09 47 05.3
Date first
1909
Date last
2012
Obs
26
Pa first
149
Pa last
112
P.A. Now (θ)
102.4°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.23"
Mag pri
7.36
Mag sec
9.89
delta mag (ΔM)
2.53
Spectral class
F4V (yellow-white)
Pri motion ra
-083
Sec motion ra
Pri motion dec
+043
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
HIP
5898
Tycho2
0613-00226-1
HD
7564
ADS
1016
BD
BD+09 142
Distance
57.41
Distance ly
187.27
last precise pa
111.7
last precise sep
0.238
 
 
ORBITAL ELEMENTS
 
 
Period (P)162y± 13 Periastron (T)2101y± 13 Semi-major axis (a)0.607a± 0.035
Eccentricity (e)0.447± 0.054 Inclination (i)101.7°± 1 Longitude of periastron (ω)262.8°± 6.6
Node (Ω)151.2°± 2.1 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.407 129.3
2001 0.397 128.4
2002 0.387 127.4
2003 0.376 126.4
2004 0.366 125.3
2005 0.355 124.2
2006 0.345 123.0
2007 0.334 121.7
2008 0.323 120.3
2009 0.313 118.8
2010 0.302 117.3
2011 0.292 115.6
2012 0.281 113.8
2013 0.271 111.8
2014 0.261 109.7
2015 0.251 107.4
2016 0.242 105.0
2017 0.233 102.4
2018 0.224 99.5
2019 0.216 96.4
2020 0.208 93.1
2021 0.201 89.6
2022 0.195 85.8
2023 0.189 81.8
2024 0.185 77.5
2025 0.181 73.1
2026 0.179 68.5
2027 0.177 63.8
2028 0.177 59.1
2029 0.178 54.3
2030 0.180 49.7

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