15360+3948 STT 298 AB
15h 36m 02.22s +39° 48' 08.9" P.A. 192.00 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 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 36 02.22 +39 48 08.9 |
|
| Date first |
1843 |
|
Date last |
2022 |
|
Obs |
553 |
|
| Pa first |
179 |
|
Pa last |
191.8 |
|
P.A. Now (θ) |
194.9° |
|
| Sep first |
1.1 |
|
Sep last |
1.2 |
|
Sep. Now (ρ) |
1.096" |
|
| Mag pri |
7.16 |
|
Mag sec |
8.44 |
|
delta mag (ΔM) |
1.28 |
|
Spectral class |
K2V (yellow-orange) |
|
| Pri motion ra |
-483 |
|
Sec motion ra |
-455 |
|
| Pri motion dec |
+028 |
|
Sec motion dec |
+051 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
|
|
15 36 02 +39 48 09 |
STT 298 AB |
2022 |
553 |
192 |
1.2 |
7.16 |
8.44 |
1.28 |
Y |
<=== |
| Show |
|
|
15 36 02 +39 48 09 |
STT 298 AB,C |
2017 |
43 |
328 |
120.4 |
6.90 |
7.75 |
0.85 |
|
|
| Show |
|
|
15 36 02 +39 48 09 |
STT 298 AB,D |
2016 |
8 |
198 |
114.4 |
6.90 |
13.94 |
7.04 |
|
|
| Show |
|
|
15 36 02 +39 48 09 |
STT 298 AB,E |
2016 |
7 |
335 |
451.6 |
6.90 |
12.07 |
5.17 |
|
|
| Show |
|
|
15 35 57 +39 49 52 |
STT 298 CE |
2016 |
7 |
338 |
331.9 |
7.75 |
12.07 |
4.32 |
|
|
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 |
|
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 |
| 2031 |
203.6 |
0.891 |
| 2032 |
205.6 |
0.846 |
| 2033 |
207.7 |
0.799 |
| 2034 |
210.1 |
0.749 |
| 2035 |
212.8 |
0.697 |
| 2036 |
216.1 |
0.643 |
| 2037 |
219.9 |
0.587 |
| 2038 |
224.5 |
0.530 |
| 2039 |
230.3 |
0.473 |
| 2040 |
237.6 |
0.417 |
| 2041 |
247.0 |
0.366 |
| 2042 |
259.3 |
0.323 |
| 2043 |
274.7 |
0.293 |
| 2044 |
292.5 |
0.281 |
| 2045 |
310.4 |
0.289 |
| 2046 |
326.5 |
0.311 |
| 2047 |
340.3 |
0.335 |
| 2048 |
352.7 |
0.344 |
| 2049 |
5.4 |
0.323 |
| 2050 |
21.8 |
0.267 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
