13258+4430 A 1609 AB
13h 25m 48.12s +44° 29' 38.3" P.A. 87.00 sep 0.3 mag 9.49,8.79 Sp K0 dist. 52.66 pc (171.78 l.y.)
| Coord 2000 |
13258+4430 |
|
Discov num |
A 1609 |
|
Comp |
AB |
|
Coord arcsec 2000 |
13 25 48.12 +44 29 38.3 |
|
| Date first |
1907 |
|
Date last |
2020 |
|
Obs |
116 |
|
| Pa first |
355 |
|
Pa last |
87.3 |
|
P.A. Now (θ) |
129° |
|
| Sep first |
0.4 |
|
Sep last |
0.256 |
|
Sep. Now (ρ) |
0.172" |
|
| Mag pri |
9.49 |
|
Mag sec |
8.79 |
|
delta mag (ΔM) |
0.7 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+022 |
|
Sec motion ra |
+022 |
|
| Pri motion dec |
-008 |
|
Sec motion dec |
-008 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
13258+4430 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
44605 |
13 25 48 +44 29 38 |
A 1609 AB |
2020 |
116 |
87 |
0.3 |
9.49 |
8.79 |
0.70 |
Y |
<=== |
| Show |
|
44605 |
13 25 48 +44 29 38 |
A 1609 AB,C |
2020 |
22 |
221 |
2.6 |
8.33 |
13.00 |
4.67 |
|
|
| Show |
|
44605 |
13 25 48 +44 29 38 |
A 1609 AB,D |
2016 |
8 |
47 |
28.5 |
8.33 |
13.80 |
5.47 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Canes Venatici |
|
SAO |
44605 |
|
HIP |
65518 |
|
Tycho2 |
3031-00689-1 |
|
| Gaia DR2 |
1549775731138150400 |
|
HD |
116878 |
|
ADS |
8901 |
|
BD |
BD+45 2108 |
|
| Distance |
52.66 |
|
Distance ly |
171.78 |
|
ORBITAL ELEMENTS
| Period (P) | 44.24y | |
Periastron (T) | 1981.24y | |
Semi-major axis (a) | 0.321a | |
| Eccentricity (e) | 0.52 | |
Inclination (i) | 26° | |
Longitude of periastron (ω) | 153° | |
| Node (Ω) | 40.4° | |
Notes | n | |
Reference | Hei1991 | |
| Equinox | 2000 | |
Last observation | 1989 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
6.1 |
0.462 |
| 2001 |
9.0 |
0.469 |
| 2002 |
11.9 |
0.474 |
| 2003 |
14.8 |
0.477 |
| 2004 |
17.6 |
0.479 |
| 2005 |
20.4 |
0.479 |
| 2006 |
23.2 |
0.478 |
| 2007 |
26.0 |
0.475 |
| 2008 |
28.9 |
0.470 |
| 2009 |
31.9 |
0.463 |
| 2010 |
34.9 |
0.455 |
| 2011 |
38.1 |
0.445 |
| 2012 |
41.5 |
0.432 |
| 2013 |
45.0 |
0.418 |
| 2014 |
48.8 |
0.402 |
| 2015 |
53.0 |
0.383 |
| 2016 |
57.6 |
0.363 |
| 2017 |
62.9 |
0.340 |
| 2018 |
68.9 |
0.315 |
| 2019 |
76.0 |
0.287 |
| 2020 |
84.7 |
0.258 |
| 2021 |
95.6 |
0.228 |
| 2022 |
109.9 |
0.198 |
| 2023 |
129.0 |
0.172 |
| 2024 |
153.6 |
0.154 |
| 2025 |
182.0 |
0.149 |
| 2026 |
210.1 |
0.155 |
| 2027 |
234.8 |
0.168 |
| 2028 |
255.5 |
0.185 |
| 2029 |
272.6 |
0.204 |
| 2030 |
286.7 |
0.225 |
|
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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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