15360+3948 STT 298 AB
15h 36m 02.22s +39° 48' 08.9" P.A. 191.00 sep 1.2 mag 7.16,8.44 Sp K2V dist. 22.31 pc (72.78 l.y.)
Coord 2000 |
15360+3948 |
|
Discov num |
STT 298 |
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Comp |
AB |
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Coord arcsec 2000 |
15 36 02.22 +39 48 08.9 |
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Date first |
1843 |
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Date last |
2021 |
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Obs |
553 |
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Pa first |
179 |
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Pa last |
190.6 |
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P.A. Now (θ) |
192.6° |
|
Sep first |
1.1 |
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Sep last |
1.21 |
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Sep. Now (ρ) |
1.139" |
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Mag pri |
7.16 |
|
Mag sec |
8.44 |
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delta mag (ΔM) |
1.28 |
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Spectral class |
K2V (yellow-orange) |
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Pri motion ra |
-483 |
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Sec motion ra |
-455 |
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Pri motion dec |
+028 |
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Sec motion dec |
+051 |
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Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.075 (< 0.3, Physical double)
This double is physical.
15360+3948 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
64800 |
15 36 02 +39 48 09 |
STT 298 AB |
2021 |
553 |
191 |
1.2 |
7.16 |
8.44 |
1.28 |
Y |
<=== |
Show |
HD 139341 |
64800 |
15 36 02 +39 48 09 |
STT 298 AB,C |
2017 |
43 |
328 |
120.4 |
6.90 |
7.75 |
0.85 |
|
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Show |
|
64800 |
15 36 02 +39 48 09 |
STT 298 AB,D |
2002 |
6 |
224 |
167.4 |
6.90 |
13.94 |
7.04 |
|
|
Show |
|
64800 |
15 36 02 +39 48 09 |
STT 298 AB,E |
2002 |
5 |
335 |
456.0 |
6.90 |
12.07 |
5.17 |
|
|
Show |
|
64799 |
15 35 57 +39 49 52 |
STT 298 CE |
1999 |
4 |
337 |
335.8 |
7.75 |
12.07 |
4.32 |
|
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Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Bootes |
|
SAO |
64800 |
|
HIP |
76382 |
|
Tycho2 |
3053-00798-1 |
|
HD |
139341 |
|
GC |
20990 |
|
ADS |
9716 |
|
GL |
Gl 593A |
|
BD |
BD+40 2905 |
|
Distance |
22.31 |
|
Distance ly |
72.78 |
|
ORBITAL ELEMENTS
Period (P) | 55.452y | ± 0.0691 |
Periastron (T) | 1938.4947y | ± 0.0909 |
Semi-major axis (a) | 0.78322a | ± 0.00428 |
Eccentricity (e) | 0.5844 | ± 0.00255 |
Inclination (i) | 63.51° | ± 0.375 |
Longitude of periastron (ω) | 23.236° | ± 0.951 |
Node (Ω) | 0.352° | ± 0.486 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
153.9 |
0.472 |
2001 |
159.3 |
0.562 |
2002 |
163.3 |
0.645 |
2003 |
166.3 |
0.721 |
2004 |
168.9 |
0.789 |
2005 |
171.0 |
0.852 |
2006 |
172.9 |
0.908 |
2007 |
174.5 |
0.958 |
2008 |
176.0 |
1.002 |
2009 |
177.4 |
1.041 |
2010 |
178.7 |
1.075 |
2011 |
179.9 |
1.104 |
2012 |
181.1 |
1.129 |
2013 |
182.2 |
1.149 |
2014 |
183.3 |
1.165 |
2015 |
184.3 |
1.177 |
2016 |
185.3 |
1.185 |
2017 |
186.4 |
1.189 |
2018 |
187.4 |
1.190 |
2019 |
188.4 |
1.187 |
2020 |
189.4 |
1.180 |
2021 |
190.5 |
1.170 |
2022 |
191.5 |
1.156 |
2023 |
192.6 |
1.139 |
2024 |
193.8 |
1.119 |
2025 |
194.9 |
1.096 |
2026 |
196.2 |
1.069 |
2027 |
197.5 |
1.040 |
2028 |
198.8 |
1.007 |
2029 |
200.3 |
0.971 |
2030 |
201.9 |
0.933 |
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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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