01570+3101 A 819 AB
01h 57m 01.33s +31° 01' 22.4" P.A. 1.00 sep 0.1 mag 8.16,9.30 Sp F5 dist. 86.06 pc (280.73 l.y.)
Coord 2000 |
01570+3101 |
|
Discov num |
A 819 |
|
Comp |
AB |
|
Coord arcsec 2000 |
01 57 01.33 +31 01 22.4 |
|
Date first |
1904 |
|
Date last |
2013 |
|
Obs |
51 |
|
Pa first |
132 |
|
Pa last |
0.6 |
|
P.A. Now (θ) |
76.8° |
|
Sep first |
0.5 |
|
Sep last |
0.14 |
|
Sep. Now (ρ) |
0.201" |
|
Mag pri |
8.16 |
|
Mag sec |
9.30 |
|
delta mag (ΔM) |
1.14 |
|
Spectral class |
F5 (yellow-white) |
|
Pri motion ra |
+028 |
|
Sec motion ra |
|
|
Pri motion dec |
-076 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
01570+3101 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
55122 |
01 57 01 +31 01 22 |
A 819 AB |
2013 |
51 |
1 |
0.1 |
8.16 |
9.30 |
1.14 |
Y |
<=== |
Show |
HD 11849 |
55122 |
01 57 01 +31 01 22 |
A 819 AB,C |
2014 |
15 |
271 |
66.4 |
7.79 |
10.00 |
2.21 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Triangulum |
|
SAO |
55122 |
|
HIP |
9087 |
|
Tycho2 |
2308-01185-1 |
|
Gaia DR2 |
301165516273256576 |
|
HD |
11849 |
|
ADS |
1548 |
|
BD |
BD+30 303 |
|
Distance |
86.06 |
|
Distance ly |
280.73 |
|
ORBITAL ELEMENTS
Period (P) | 138.6y | ± 3.7 |
Periastron (T) | 2010.8y | ± 0.41 |
Semi-major axis (a) | 0.421a | ± 0.026 |
Eccentricity (e) | 0.546 | ± 0.006 |
Inclination (i) | 48.8° | ± 2.3 |
Longitude of periastron (ω) | 186.8° | ± 2.3 |
Node (Ω) | 154.1° | ± 1.5 |
Notes | n | |
Reference | Sca2021b | |
Equinox | | |
Last observation | 2020 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
261.3 |
0.191 |
2001 |
268.4 |
0.187 |
2002 |
275.7 |
0.185 |
2003 |
283.2 |
0.184 |
2004 |
290.6 |
0.185 |
2005 |
298.0 |
0.186 |
2006 |
305.2 |
0.188 |
2007 |
312.3 |
0.190 |
2008 |
319.3 |
0.192 |
2009 |
326.2 |
0.192 |
2010 |
333.0 |
0.192 |
2011 |
340.0 |
0.190 |
2012 |
347.2 |
0.187 |
2013 |
354.6 |
0.182 |
2014 |
2.4 |
0.178 |
2015 |
10.7 |
0.173 |
2016 |
19.3 |
0.170 |
2017 |
28.2 |
0.168 |
2018 |
37.3 |
0.168 |
2019 |
46.2 |
0.170 |
2020 |
54.7 |
0.175 |
2021 |
62.8 |
0.181 |
2022 |
70.2 |
0.190 |
2023 |
76.8 |
0.201 |
2024 |
82.8 |
0.212 |
2025 |
88.1 |
0.225 |
2026 |
92.9 |
0.238 |
2027 |
97.1 |
0.252 |
2028 |
100.9 |
0.266 |
2029 |
104.3 |
0.281 |
2030 |
107.3 |
0.295 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|