08539+0149 A  2554

 
 
08h 53m 51.95s +01 49' 28.0" P.A. 27.3 sep 0.13 mag 7.44,9.64 Sp F0 dist. 67.61 pc (220.54 l.y.)
 
 
Coord 2000
08539+0149
Discov num
A  2554
Comp
Coord arcsec 2000
08 53 51.95 +01 49 28.0
Date first
1913
Date last
2016
Obs
21
Pa first
323
Pa last
43
P.A. Now (θ)
27.3°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.13"
Mag pri
7.44
Mag sec
9.64
delta mag (ΔM)
2.2
Spectral class
F0 (yellow-white)
Pri motion ra
+010
Sec motion ra
Pri motion dec
-040
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
43.1
Precise sep
0.157
Constellation
Hydra
HIP
43676
Tycho2
0213-00019-1
HD
76050
ADS
7074
BD
BD+02 2088
Distance
67.61
Distance ly
220.54
last precise pa
43.1
last precise sep
0.157
 
 
ORBITAL ELEMENTS
 
 
Period (P)43.86y± 0.8 Periastron (T)2021.18y± 0.3 Semi-major axis (a)0.21a± 0.005
Eccentricity (e)0.502± 0.03 Inclination (i)162.4°± 11.4 Longitude of periastron (ω)339.7°± 17.3
Node (Ω)292.4°± 16.7 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.314 129.5
2001 0.313 126.5
2002 0.311 123.5
2003 0.308 120.3
2004 0.304 117.2
2005 0.299 113.9
2006 0.293 110.5
2007 0.286 106.9
2008 0.278 103.2
2009 0.268 99.2
2010 0.257 94.9
2011 0.245 90.1
2012 0.232 84.9
2013 0.217 79.0
2014 0.202 72.2
2015 0.185 64.1
2016 0.167 54.5
2017 0.149 42.5
2018 0.132 27.3
2019 0.117 7.9
2020 0.107 343.9
2021 0.104 316.8
2022 0.107 289.8
2023 0.116 265.8
2024 0.129 245.8
2025 0.144 229.7
2026 0.159 216.7
2027 0.175 206.0
2028 0.191 197.1
2029 0.206 189.5
2030 0.220 182.9

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

grafico orbita





wds08539%2B0149a.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
08539+0149 A 2554 1996 15 140 0.3 7.44 9.64 F0 O 085351.95+014928.0
08539+0149 A 2554 2010 17 270 0.2 7.44 9.64 F0 O 085351.95+014928.0
08539+0149 A 2554 2013 18 258 0.2 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2014 19 250 0.2 7.44 9.64 F0 NO 085351.95+014928.0
08539+0149 A 2554 2016 21 43 0.2 7.44 9.64 F0 NO 085351.95+014928.0

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