17282+3949 BOY 10 Aa,Ab
17h 28m 11.50s +39° 48' 59.3" P.A. 134.00 sep 0.2 mag 20.25,20.91 Sp L7+L8
| Coord 2000 |
17282+3949 |
|
Discov num |
BOY 10 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
17 28 11.50 +39 48 59.3 |
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| Date first |
2000 |
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Date last |
2014 |
|
Obs |
27 |
|
| Pa first |
28 |
|
Pa last |
134.1 |
|
P.A. Now (θ) |
134.1° |
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| Sep first |
0.1 |
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Sep last |
0.194 |
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Sep. Now (ρ) |
0.194" |
|
| Mag pri |
20.25 |
|
Mag sec |
20.91 |
|
delta mag (ΔM) |
0.66 |
|
Spectral class |
L7+L8 (very deep red/very deep red) |
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| Pri motion ra |
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Sec motion ra |
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| Pri motion dec |
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Sec motion dec |
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| Notes |
N
O
R
(See Notes, Orbital solution, Red magnitudes) |
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This double is physical.
17282+3949 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
17 28 12 +39 48 59 |
BOY 10 Aa,Ab |
2014 |
27 |
134 |
0.2 |
20.25 |
20.91 |
0.66 |
Y |
<=== |
| Show |
|
|
17 28 12 +39 48 59 |
ALP 22 AB |
2001 |
1 |
351 |
36.1 |
15.96 |
|
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|
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
ORBITAL ELEMENTS
| Period (P) | 43.8y | ± 1.6 |
Periastron (T) | 71000d (2053.267y) | ± 5000 |
Semi-major axis (a) | 232m | ± 6 |
| Eccentricity (e) | 0.055 | ± 0.015 |
Inclination (i) | 55.4° | ± 0.6 |
Longitude of periastron (ω) | 340° | ± 130 |
| Node (Ω) | 110.6° | ± 0.6 |
Notes | n | |
Reference | Dup2017 | |
| Equinox | | |
Last observation | 2014 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
356.8 |
0.138 |
| 2001 |
10.7 |
0.131 |
| 2002 |
25.7 |
0.129 |
| 2003 |
40.5 |
0.133 |
| 2004 |
53.8 |
0.142 |
| 2005 |
65.3 |
0.155 |
| 2006 |
74.9 |
0.169 |
| 2007 |
83.0 |
0.183 |
| 2008 |
90.0 |
0.196 |
| 2009 |
96.2 |
0.206 |
| 2010 |
101.9 |
0.214 |
| 2011 |
107.2 |
0.219 |
| 2012 |
112.4 |
0.220 |
| 2013 |
117.7 |
0.218 |
| 2014 |
123.1 |
0.212 |
| 2015 |
128.9 |
0.203 |
| 2016 |
135.3 |
0.192 |
| 2017 |
142.5 |
0.180 |
| 2018 |
150.9 |
0.167 |
| 2019 |
160.7 |
0.154 |
| 2020 |
172.1 |
0.143 |
| 2021 |
185.1 |
0.136 |
| 2022 |
198.9 |
0.134 |
| 2023 |
212.7 |
0.137 |
| 2024 |
225.5 |
0.145 |
| 2025 |
236.6 |
0.156 |
| 2026 |
246.1 |
0.169 |
| 2027 |
254.2 |
0.184 |
| 2028 |
261.1 |
0.198 |
| 2029 |
267.1 |
0.211 |
| 2030 |
272.4 |
0.223 |
|
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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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