00258+1025 HDS  57

 
 
00h 25m 49.78s +10 25' 24.1" P.A. 31.4 sep 0.08 mag 9.71,10.71 Sp G0 dist. 110.13 pc (359.24 l.y.)
 
 
Coord 2000
00258+1025
Discov num
HDS  57
Comp
Coord arcsec 2000
00 25 49.78 +10 25 24.1
Date first
1991
Date last
2017
Obs
10
Pa first
157
Pa last
37
P.A. Now (θ)
31.4°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.08"
Mag pri
9.71
Mag sec
10.71
delta mag (ΔM)
1
Spectral class
G0 (yellow)
Pri motion ra
+066
Sec motion ra
Pri motion dec
+049
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
37.3
Precise sep
0.08
Constellation
Pisces
SAO
91889
HIP
2035
Tycho2
0599-00603-1
HD
2157
BD
BD+09 41
Distance
110.13
Distance ly
359.24
last precise pa
37.3
last precise sep
0.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)48.87y± 7.32 Periastron (T)2020.24y± 0.6 Semi-major axis (a)0.149a± 0.015
Eccentricity (e)0.65 Inclination (i)123.2°± 1.9 Longitude of periastron (ω)72.2°± 3.7
Node (Ω)28.2°± 8.1 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.136 134.4
2001 0.132 130.6
2002 0.129 126.7
2003 0.126 122.5
2004 0.124 118.1
2005 0.121 113.6
2006 0.118 108.8
2007 0.116 103.9
2008 0.114 98.7
2009 0.112 93.4
2010 0.110 87.9
2011 0.109 82.2
2012 0.107 76.4
2013 0.105 70.3
2014 0.102 63.9
2015 0.099 57.2
2016 0.094 49.9
2017 0.087 41.6
2018 0.075 31.4
2019 0.058 16.1
2020 0.036 343.2
2021 0.033 271.5
2022 0.057 234.0
2023 0.081 219.3
2024 0.100 211.0
2025 0.116 205.1
2026 0.128 200.5
2027 0.138 196.7
2028 0.145 193.3
2029 0.152 190.2
2030 0.156 187.3

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

grafico orbita





wds00258%2B1025e.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
00258+1025 HDS 57 1991 1 157 0.2 9.71 10.71 G0 002549.78+102524.1
00258+1025 HDS 57 2007 3 99 0.1 9.71 10.71 G0 D 002549.78+102524.1
00258+1025 HDS 57 2008 4 95 0.1 9.71 10.71 G0 D 002549.78+102524.1
00258+1025 HDS 57 2015 5 52 0.1 9.71 10.71 G0 002549.78+102524.1
00258+1025 HDS 57 2017 10 37 0.1 9.71 10.71 G0 002549.78+102524.1

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