13527-1843 WSI  78 (DL Vir)

 
 
13h 52m 38.84s -18 42' 32.5" P.A. 130.4 sep 0.04 mag 7.40,8.20 Sp A1V+ dist. 218.82 pc (713.79 l.y.)
 
 
Coord 2000
13527-1843
Discov num
WSI  78
Comp
Coord arcsec 2000
13 52 38.84 -18 42 32.5
Date first
2008
Date last
2015
Obs
8
Pa first
101
Pa last
113
P.A. Now (θ)
130.4°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0.04"
Mag pri
7.40
Mag sec
8.20
delta mag (ΔM)
0.8
Spectral class
A1V+ (white)
Pri motion ra
-049
Sec motion ra
Pri motion dec
+006
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
112.7
Precise sep
0.036
Var name
DL Vir
Constellation
Virgo
SAO
158210
HIP
67744
Tycho2
6140-00715-1
HD
120901
BD
BD-17 3949
Distance
218.82
Distance ly
713.79
last precise pa
112.7
last precise sep
0.036
 
 
ORBITAL ELEMENTS
 
 
Period (P)6.22y Periastron (T)1982.44y Semi-major axis (a)0.031a
Eccentricity (e)0.465 Inclination (i)67.7° Longitude of periastron (ω)183.7°
Node (Ω)125.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 0.017 165.8
2001 0.016 300.3
2002 0.014 80.1
2003 0.036 114.5
2004 0.045 125.2
2005 0.040 134.9
2006 0.022 154.6
2007 0.014 282.4
2008 0.009 47.8
2009 0.033 111.0
2010 0.045 123.2
2011 0.043 132.5
2012 0.027 147.8
2013 0.010 251.8
2014 0.010 357.7
2015 0.028 106.5
2016 0.043 121.0
2017 0.044 130.4
2018 0.032 143.0
2019 0.010 206.6
2020 0.014 326.1
2021 0.023 100.1
2022 0.041 118.7
2023 0.045 128.3
2024 0.036 139.3
2025 0.014 175.5
2026 0.016 308.5
2027 0.017 89.5
2028 0.038 116.1
2029 0.045 126.3
2030 0.039 136.4

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

grafico orbita





wds13527-1843a.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
13527-1843 WSI 78 2009 4 116 0.0 7.40 8.20 A1V+ 135238.84-184232.5
13527-1843 WSI 78 2011 4 133 0.0 7.40 8.20 A1V+ O 135238.84-184232.5
13527-1843 WSI 78 2013 5 221 0.0 7.40 8.20 A1V+ O 135238.84-184232.5
13527-1843 WSI 78 2015 8 113 0.0 7.40 8.20 A1V+ O 135238.84-184232.5

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