10419-7811 HDS1530

 
 
10h 41m 54.45s -78 11' 03.3" P.A. 50.30 sep 0.3 mag 10.31,11.08 Sp K5V dist. 47.62 pc (155.34 l.y.)
 
 
Coord 2000
10419-7811
Discov num
HDS1530
Comp
Coord arcsec 2000
10 41 54.45 -78 11 03.3
Date first
1991
Date last
2019
Obs
13
Pa first
84
Pa last
45
P.A. Now (θ)
50.3°
Sep first
0.4
Sep last
0.2
Sep. Now (ρ)
0.26"
Mag pri
10.31
Mag sec
11.08
delta mag (ΔM)
0.77
Spectral class
K5V (yellow-orange)
Pri motion ra
-140
Sec motion ra
Pri motion dec
+102
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
44.7
Precise sep
0.248
Constellation
Hydra
HIP
52351
Tycho2
9414-00744-1
Gaia DR2
5200920901121351040
CD
CD-77 464
Distance
47.62
Distance ly
155.34
last precise pa
44.7
last precise sep
0.248
 
 
ORBITAL ELEMENTS
 
 
Period (P)39.07y± 0.67 Periastron (T)2007.88y± 0.1 Semi-major axis (a)0.267a± 0.004
Eccentricity (e)0.547± 0.008 Inclination (i)50.2°± 0.7 Longitude of periastron (ω)132.6°± 1.1
Node (Ω)109.7°± 1.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2018
label rho theta
2000 0.300 109.1
2001 0.278 113.3
2002 0.251 118.3
2003 0.220 124.7
2004 0.183 133.4
2005 0.141 147.1
2006 0.102 171.9
2007 0.084 216.2
2008 0.103 259.0
2009 0.131 284.8
2010 0.149 302.6
2011 0.158 317.4
2012 0.164 330.9
2013 0.170 343.5
2014 0.176 355.3
2015 0.185 6.1
2016 0.195 15.9
2017 0.208 24.6
2018 0.221 32.2
2019 0.235 39.0
2020 0.250 45.0
2021 0.264 50.3
2022 0.279 55.1
2023 0.292 59.4
2024 0.305 63.4
2025 0.317 67.0
2026 0.328 70.4
2027 0.337 73.6
2028 0.345 76.6
2029 0.352 79.5
2030 0.357 82.3


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



 
 


wds10419-7811b.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
10419-7811 HDS1530 1991 1 84 0.4 10.31 11.08 K5V 104154.45-781103.3
10419-7811 HDS1530 2009 2 134 0.1 10.31 11.08 K5V 104154.45-781103.3
10419-7811 HDS1530 2010 4 125 0.2 10.31 11.08 K5V 104154.45-781103.3
10419-7811 HDS1530 2012 7 152 0.2 10.31 11.08 K5V 104154.45-781103.3
10419-7811 HDS1530 2013 8 165 0.2 10.31 11.08 K5V 104154.45-781103.3
10419-7811 HDS1530 2014 9 177 0.2 10.31 11.08 K5V O 104154.45-781103.3
10419-7811 HDS1530 2015 10 187 0.2 10.31 11.08 K5V O 104154.45-781103.3
10419-7811 HDS1530 2016 11 18 0.2 10.31 11.08 K5V O 104154.45-781103.3
10419-7811 HDS1530 2018 12 33 0.2 10.31 11.08 K5V O 104154.45-781103.3
10419-7811 HDS1530 2019 13 45 0.2 10.31 11.08 K5V O 104154.45-781103.3

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