01158+0947 A  2102

 
 
01h 15m 46.78s +09 47' 05.3" P.A. 99.5 sep 0.22 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
2016
Obs
28
Pa first
149
Pa last
96
P.A. Now (θ)
99.5°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.22"
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
 
 
Precise pa
96.2
Precise sep
0.235
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
96.2
last precise sep
0.235
 
 
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 Grade5(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





wds01158%2B0947b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01158+0947 A 2102 1994 22 138 0.5 7.36 9.89 F4V NOD 011546.78+094705.3
01158+0947 A 2102 2008 24 118 0.3 7.36 9.89 F4V NOD 011546.78+094705.3
01158+0947 A 2102 2009 25 115 0.3 7.36 9.89 F4V NOD 011546.78+094705.3
01158+0947 A 2102 2012 26 114 0.2 7.36 9.89 F4V NOD 011546.78+094705.3
01158+0947 A 2102 2016 28 96 0.2 7.36 9.89 F4V NO 011546.78+094705.3

If you need more information about this double, apply for a data request form to the WDS.