15264+4400 STT 296 AB (HD 137805)
15h 26m 26.56s +44° 00' 13.2" P.A. 273.00 sep 2.3 mag 7.83,9.09 Sp G5 dist. 87.95 pc (286.89 l.y.)
Coord 2000 |
15264+4400 |
|
Discov num |
STT 296 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 26 26.56 +44 00 13.2 |
|
Date first |
1843 |
|
Date last |
2020 |
|
Obs |
193 |
|
Pa first |
323 |
|
Pa last |
272.7 |
|
P.A. Now (θ) |
272.7° |
|
Sep first |
1.6 |
|
Sep last |
2.302 |
|
Sep. Now (ρ) |
2.302" |
|
Mag pri |
7.83 |
|
Mag sec |
9.09 |
|
delta mag (ΔM) |
1.26 |
|
Spectral class |
G5 (yellow) |
|
Pri motion ra |
+109 |
|
Sec motion ra |
+109 |
|
Pri motion dec |
-077 |
|
Sec motion dec |
-077 |
|
Notes |
O
(Orbital solution) |
|
This double is physical.
15264+4400 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 137805 |
45541 |
15 26 27 +44 00 13 |
STT 296 AB |
2020 |
193 |
273 |
2.3 |
7.83 |
9.09 |
1.26 |
Y |
<=== |
Show |
|
45541 |
15 26 27 +44 00 13 |
STT 296 AC |
2016 |
14 |
313 |
80.7 |
7.83 |
12.67 |
4.84 |
|
|
Show |
|
45541 |
15 26 27 +44 00 13 |
POP 1221 AD |
2015 |
3 |
346 |
68.4 |
7.83 |
14.00 |
6.17 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 137805 |
|
Constellation |
Bootes |
|
SAO |
45541 |
|
HIP |
75580 |
|
Tycho2 |
3058-00429-1 |
|
Gaia DR2 |
1394141887452208512 |
|
HD |
137805 |
|
GC |
20764 |
|
ADS |
9639 |
|
BD |
BD+44 2465 |
|
Distance |
87.95 |
|
Distance ly |
286.89 |
|
ORBITAL ELEMENTS
Period (P) | 9107y | ± 7046 |
Periastron (T) | 1771.7y | ± 23.8 |
Semi-major axis (a) | 6.742a | ± 3.239 |
Eccentricity (e) | 0.695 | ± 0.1 |
Inclination (i) | 136.5° | ± 7.7 |
Longitude of periastron (ω) | 59° | ± 15.8 |
Node (Ω) | 44° | ± 6.9 |
Notes | | |
Reference | PkO2018b | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
277.2 |
2.052 |
2001 |
276.9 |
2.058 |
2002 |
276.7 |
2.063 |
2003 |
276.5 |
2.068 |
2004 |
276.3 |
2.074 |
2005 |
276.1 |
2.079 |
2006 |
275.8 |
2.084 |
2007 |
275.6 |
2.090 |
2008 |
275.4 |
2.095 |
2009 |
275.2 |
2.100 |
2010 |
275.0 |
2.106 |
2011 |
274.8 |
2.111 |
2012 |
274.6 |
2.116 |
2013 |
274.4 |
2.122 |
2014 |
274.2 |
2.127 |
2015 |
273.9 |
2.133 |
2016 |
273.7 |
2.138 |
2017 |
273.5 |
2.144 |
2018 |
273.3 |
2.149 |
2019 |
273.1 |
2.155 |
2020 |
272.9 |
2.160 |
2021 |
272.7 |
2.166 |
2022 |
272.5 |
2.171 |
2023 |
272.3 |
2.177 |
2024 |
272.1 |
2.182 |
2025 |
271.9 |
2.188 |
2026 |
271.7 |
2.193 |
2027 |
271.5 |
2.199 |
2028 |
271.4 |
2.204 |
2029 |
271.2 |
2.210 |
2030 |
271.0 |
2.216 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|