07307+4813 WNO 49 Ba,Bb
07h 30m 47.26s +48° 10' 22.6" P.A. 318.00 sep 0.7 mag 15.50,15.50 Sp DC9+DC9
| Coord 2000 |
07307+4813 |
|
Discov num |
WNO 49 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
07 30 47.26 +48 10 22.6 |
|
| Date first |
1969 |
|
Date last |
2015 |
|
Obs |
5 |
|
| Pa first |
162 |
|
Pa last |
318.1 |
|
P.A. Now (θ) |
318.1° |
|
| Sep first |
0.6 |
|
Sep last |
0.667 |
|
Sep. Now (ρ) |
0.667" |
|
| Mag pri |
15.50 |
|
Mag sec |
15.50 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
DC9+DC9 (white dwarf/white dwarf) |
|
| Pri motion ra |
-022 |
|
Sec motion ra |
-022 |
|
| Pri motion dec |
-127 |
|
Sec motion dec |
-127 |
|
| Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
|
This double is physical.
07307+4813 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
07 30 43 +48 11 55 |
GIC 75 AB |
2015 |
12 |
154 |
103.0 |
13.52 |
14.62 |
1.10 |
|
|
| Show |
|
|
07 30 47 +48 10 23 |
WNO 49 Ba,Bb |
2015 |
5 |
318 |
0.7 |
15.50 |
15.50 |
0.00 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
ORBITAL ELEMENTS
| Period (P) | 20.5y | ± 1.9 |
Periastron (T) | 1971.2y | ± 0.5 |
Semi-major axis (a) | 0.656a | ± 0.031 |
| Eccentricity (e) | 0.18 | ± 0.06 |
Inclination (i) | 40° | ± 6 |
Longitude of periastron (ω) | 25° | ± 14 |
| Node (Ω) | 167° | ± 14 |
Notes | n | |
Reference | Hrr1981 | |
| Equinox | | |
Last observation | 1980 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
347.4 |
0.759 |
| 2001 |
357.2 |
0.762 |
| 2002 |
7.2 |
0.744 |
| 2003 |
18.0 |
0.707 |
| 2004 |
30.2 |
0.657 |
| 2005 |
44.6 |
0.602 |
| 2006 |
61.8 |
0.553 |
| 2007 |
81.7 |
0.521 |
| 2008 |
103.1 |
0.514 |
| 2009 |
124.2 |
0.527 |
| 2010 |
144.0 |
0.545 |
| 2011 |
162.9 |
0.548 |
| 2012 |
182.5 |
0.525 |
| 2013 |
204.9 |
0.483 |
| 2014 |
231.4 |
0.449 |
| 2015 |
259.8 |
0.455 |
| 2016 |
284.9 |
0.505 |
| 2017 |
304.4 |
0.579 |
| 2018 |
319.5 |
0.652 |
| 2019 |
331.7 |
0.711 |
| 2020 |
342.4 |
0.749 |
| 2021 |
352.3 |
0.763 |
| 2022 |
2.1 |
0.755 |
| 2023 |
12.4 |
0.727 |
| 2024 |
23.9 |
0.683 |
| 2025 |
37.1 |
0.629 |
| 2026 |
52.8 |
0.576 |
| 2027 |
71.4 |
0.534 |
| 2028 |
92.3 |
0.514 |
| 2029 |
113.8 |
0.519 |
| 2030 |
134.2 |
0.537 |
|
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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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