09498+2111 KUI 44 AB
09h 49m 50.12s +21° 10' 46.0" P.A. 227.00 sep 0.2 mag 6.62,7.31 Sp A7IVn dist. 191.57 pc (624.9 l.y.)
Coord 2000 |
09498+2111 |
|
Discov num |
KUI 44 |
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Comp |
AB |
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Coord arcsec 2000 |
09 49 50.12 +21 10 46.0 |
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Date first |
1935 |
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Date last |
2016 |
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Obs |
87 |
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Pa first |
222 |
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Pa last |
227 |
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P.A. Now (θ) |
224.6° |
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Sep first |
0.3 |
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Sep last |
0.172 |
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Sep. Now (ρ) |
0.216" |
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Mag pri |
6.62 |
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Mag sec |
7.31 |
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delta mag (ΔM) |
0.69 |
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Spectral class |
A7IVn (white) |
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Pri motion ra |
-043 |
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Sec motion ra |
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Pri motion dec |
-012 |
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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.
09498+2111 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
81035 |
09 49 50 +21 10 46 |
KUI 44 AB |
2016 |
87 |
227 |
0.2 |
6.62 |
7.31 |
0.69 |
Y |
<=== |
Show |
DG Leo |
81035 |
09 49 50 +21 10 46 |
FYM 626 AB,C |
2017 |
5 |
13 |
12.4 |
6.16 |
14.80 |
8.64 |
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Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
DG Leo |
|
Constellation |
Leo |
|
SAO |
81035 |
|
HIP |
48218 |
|
Tycho2 |
1417-01531-1 |
|
Gaia DR2 |
640100210441202048 |
|
HD |
85040 |
|
HR |
3889 |
|
GC |
13528 |
|
BD |
BD+21 2113 |
|
Flamsteed |
20 Leonis |
|
Flamsteed name |
20 Leo |
|
FK5 |
2785 |
|
Distance |
191.57 |
|
Distance ly |
624.9 |
|
SUSPECTED ORBITAL ELEMENTS
Identifier | 09498+2111 KUI 44 |
coord_arcsec_2000 | 094950.12+211046.0 |
Period (P) | 113.1y | ± 3.4 |
Periastron (T) | 2000.31y | ± 0.29 |
Semi-major axis (a) | 0.208a | ± 0.006 |
Eccentricity (e) | 0.887 | ± 0.008 |
Inclination (i) | 107.5° | ± 0.9 |
Longitude of periastron (ω) | 332° | ± 4.1 |
Node (Ω) | 27.9° | ± 1.3 |
Notes | n | |
Reference | Tam2006b | |
Equinox | 2000 | |
Last observation | 2004 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
57.1 |
0.014 |
2001 |
15.6 |
0.026 |
2002 |
342.9 |
0.022 |
2003 |
300.8 |
0.022 |
2004 |
272.2 |
0.031 |
2005 |
257.4 |
0.042 |
2006 |
249.1 |
0.054 |
2007 |
243.8 |
0.067 |
2008 |
240.2 |
0.079 |
2009 |
237.5 |
0.090 |
2010 |
235.4 |
0.101 |
2011 |
233.7 |
0.112 |
2012 |
232.3 |
0.122 |
2013 |
231.1 |
0.132 |
2014 |
230.1 |
0.142 |
2015 |
229.2 |
0.151 |
2016 |
228.4 |
0.161 |
2017 |
227.7 |
0.169 |
2018 |
227.1 |
0.178 |
2019 |
226.5 |
0.186 |
2020 |
226.0 |
0.194 |
2021 |
225.5 |
0.202 |
2022 |
225.0 |
0.209 |
2023 |
224.6 |
0.216 |
2024 |
224.2 |
0.223 |
2025 |
223.8 |
0.230 |
2026 |
223.5 |
0.237 |
2027 |
223.2 |
0.243 |
2028 |
222.8 |
0.249 |
2029 |
222.5 |
0.255 |
2030 |
222.2 |
0.261 |
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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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