10171+1309 BOY 4 Aa,Ab
10h 17m 07.55s +13° 08' 39.4" P.A. 301.00 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 |
301.3 |
|
P.A. Now (θ) |
168.5° |
|
Sep first |
0.1 |
|
Sep last |
0.117 |
|
Sep. Now (ρ) |
0.095" |
|
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 |
301 |
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 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Leo |
|
Gaia DR2 |
3886930903070855936 |
|
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) | 7° | ± 5 |
Node (Ω) | 72.3° | ± 2 |
Notes | n | |
Reference | Dup2017 | |
Equinox | | |
Last observation | 2013 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
61.5 |
0.101 |
2001 |
83.5 |
0.100 |
2002 |
106.8 |
0.096 |
2003 |
132.3 |
0.092 |
2004 |
158.9 |
0.093 |
2005 |
183.2 |
0.100 |
2006 |
203.3 |
0.111 |
2007 |
219.6 |
0.123 |
2008 |
233.3 |
0.132 |
2009 |
245.6 |
0.138 |
2010 |
257.3 |
0.139 |
2011 |
269.2 |
0.135 |
2012 |
282.0 |
0.128 |
2013 |
296.7 |
0.118 |
2014 |
314.3 |
0.108 |
2015 |
335.4 |
0.099 |
2016 |
359.5 |
0.095 |
2017 |
24.3 |
0.096 |
2018 |
47.7 |
0.100 |
2019 |
69.9 |
0.101 |
2020 |
92.1 |
0.099 |
2021 |
116.2 |
0.094 |
2022 |
142.5 |
0.092 |
2023 |
168.5 |
0.095 |
2024 |
191.3 |
0.104 |
2025 |
209.9 |
0.116 |
2026 |
225.1 |
0.127 |
2027 |
238.1 |
0.135 |
2028 |
250.1 |
0.139 |
2029 |
261.7 |
0.138 |
2030 |
273.9 |
0.133 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|