13527-1843 WSI 78 (DL Vir)
13h 52m 38.84s -18° 42' 32.5" P.A. 113.00 sep 0.0 mag 7.40,8.20 Sp A3V+K1V dist. 218.82 pc (713.79 l.y.)
Coord 2000 |
13527-1843 |
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Discov num |
WSI 78 |
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Comp |
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Coord arcsec 2000 |
13 52 38.84 -18 42 32.5 |
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Date first |
2008 |
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Date last |
2021 |
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Obs |
15 |
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Pa first |
101 |
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Pa last |
113 |
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P.A. Now (θ) |
124.8° |
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Sep first |
0.0 |
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Sep last |
0.033 |
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Sep. Now (ρ) |
0.042" |
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Mag pri |
7.40 |
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Mag sec |
8.20 |
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delta mag (ΔM) |
0.8 |
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Spectral class |
A3V+K1V (white/yellow-orange) |
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Pri motion ra |
-049 |
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Sec motion ra |
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Pri motion dec |
+006 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Var name |
DL Vir |
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Constellation |
Virgo |
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SAO |
158210 |
|
HIP |
67744 |
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Tycho2 |
6140-00715-1 |
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Gaia DR2 |
6293889335197400064 |
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HD |
120901 |
|
GC |
18747 |
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BD |
BD-17 3949 |
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Distance |
218.82 |
|
Distance ly |
713.79 |
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ORBITAL ELEMENTS
Period (P) | 6.489y | |
Periastron (T) | 1981.962y | |
Semi-major axis (a) | 0.035a | |
Eccentricity (e) | 0.651 | |
Inclination (i) | 68.4° | |
Longitude of periastron (ω) | 58.2° | |
Node (Ω) | 288° | |
Notes | n | |
Reference | Msn2019 | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
202.8 |
0.016 |
2001 |
272.2 |
0.018 |
2002 |
103.2 |
0.025 |
2003 |
119.2 |
0.042 |
2004 |
129.9 |
0.041 |
2005 |
144.2 |
0.032 |
2006 |
173.7 |
0.020 |
2007 |
241.0 |
0.016 |
2008 |
6.4 |
0.005 |
2009 |
113.2 |
0.037 |
2010 |
124.6 |
0.042 |
2011 |
136.3 |
0.037 |
2012 |
155.8 |
0.026 |
2013 |
204.3 |
0.016 |
2014 |
273.5 |
0.018 |
2015 |
103.9 |
0.026 |
2016 |
119.4 |
0.042 |
2017 |
130.2 |
0.041 |
2018 |
144.6 |
0.032 |
2019 |
174.7 |
0.020 |
2020 |
242.6 |
0.016 |
2021 |
24.7 |
0.005 |
2022 |
113.5 |
0.037 |
2023 |
124.8 |
0.042 |
2024 |
136.6 |
0.037 |
2025 |
156.5 |
0.026 |
2026 |
206.0 |
0.016 |
2027 |
274.8 |
0.018 |
2028 |
104.5 |
0.026 |
2029 |
119.7 |
0.042 |
2030 |
130.4 |
0.040 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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