10171+1309 BOY   4Aa,Ab

 
 
10h 17m 07.55s +13 08' 39.4" P.A. 116.20 sep 0.1 mag 17.88,18.65
 
 
Coord 2000
10171+1309
Discov num
BOY   4
Comp
Aa,Ab
Coord arcsec 2000
10 17 07.55 +13 08 39.4
Date first
2001
Date last
2013
Obs
12
Pa first
88
Pa last
301
P.A. Now (θ)
116.2°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.09"
Mag pri
17.88
Mag sec
18.65
delta mag (ΔM)
0.77
Spectral class
Pri motion ra
+061
Sec motion ra
Pri motion dec
-094
Sec motion dec
Notes
N O R (See Notes, Orbital solution, Red magnitudes)
This double is physical.
 
 
10171+1309 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 10 17 08 +13 08 39 BOY 4 Aa,Ab 2013 12 116 0.1 17.88 18.65 0.77 Y <===
Show 10 17 08 +13 08 39 JMS 2 AB 2015 3 117 124.6 12.71 17.37 4.66
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
301.3
Precise sep
0.117
Constellation
Leo
Gaia DR2
3886930903070855936
last precise pa
301.3
last precise sep
0.117
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.62y± 0.23 Periastron (T)58620d (2019.372y)± 150 Semi-major axis (a)120m± 1.2
Eccentricity (e)0.158± 0.01 Inclination (i)35.4°± 1 Longitude of periastron (ω)± 5
Node (Ω)72.3°± 2 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2013
label rho theta
2000 0.101 61.5
2001 0.100 83.5
2002 0.096 106.8
2003 0.092 132.3
2004 0.093 158.9
2005 0.100 183.2
2006 0.111 203.3
2007 0.123 219.6
2008 0.132 233.3
2009 0.138 245.6
2010 0.139 257.3
2011 0.135 269.2
2012 0.128 282.0
2013 0.118 296.7
2014 0.108 314.3
2015 0.099 335.4
2016 0.095 359.5
2017 0.096 24.3
2018 0.100 47.7
2019 0.101 69.9
2020 0.099 92.1
2021 0.094 116.2
2022 0.092 142.5
2023 0.095 168.5
2024 0.104 191.3
2025 0.116 209.9
2026 0.127 225.1
2027 0.135 238.1
2028 0.139 250.1
2029 0.138 261.7
2030 0.133 273.9


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



 
 


wds10171%2B1309a.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
10171+1309 BOY 4 Aa,Ab 2001 3 89 0.1 17.88 18.65 DR 101707.54+130839.8
10171+1309 BOY 4 Aa,Ab 2006 4 83 0.1 17.88 18.65 N DR 101707.54+130839.8

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