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 |
194 |
|
| 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 |
|
15 26 27 +44 00 13 |
STT 296 AB |
2020 |
194 |
273 |
2.3 |
7.83 |
9.09 |
1.26 |
Y |
<=== |
| Show |
|
|
15 26 27 +44 00 13 |
STT 296 AC |
2016 |
14 |
313 |
80.7 |
7.83 |
12.67 |
4.84 |
|
|
| Show |
|
|
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 |
|
| 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 |
| 2031 |
270.8 |
2.221 |
| 2032 |
270.6 |
2.227 |
| 2033 |
270.4 |
2.232 |
| 2034 |
270.2 |
2.238 |
| 2035 |
270.0 |
2.244 |
| 2036 |
269.8 |
2.249 |
| 2037 |
269.7 |
2.255 |
| 2038 |
269.5 |
2.261 |
| 2039 |
269.3 |
2.266 |
| 2040 |
269.1 |
2.272 |
| 2041 |
268.9 |
2.278 |
| 2042 |
268.7 |
2.283 |
| 2043 |
268.6 |
2.289 |
| 2044 |
268.4 |
2.295 |
| 2045 |
268.2 |
2.300 |
| 2046 |
268.0 |
2.306 |
| 2047 |
267.9 |
2.312 |
| 2048 |
267.7 |
2.317 |
| 2049 |
267.5 |
2.323 |
| 2050 |
267.3 |
2.329 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
