13007+5622 BU 1082 (78 UMa)
13h 00m 43.59s +56° 21' 58.8" P.A. 141.00 sep 0.7 mag 5.02,7.88 Sp F2V dist. 25.45 pc (83.02 l.y.)
Coord 2000 |
13007+5622 |
|
Discov num |
BU 1082 |
|
Comp |
|
|
Coord arcsec 2000 |
13 00 43.59 +56 21 58.8 |
|
Date first |
1889 |
|
Date last |
2019 |
|
Obs |
150 |
|
Pa first |
73 |
|
Pa last |
140.7 |
|
P.A. Now (θ) |
182.8° |
|
Sep first |
1.5 |
|
Sep last |
0.66 |
|
Sep. Now (ρ) |
0.521" |
|
Mag pri |
5.02 |
|
Mag sec |
7.88 |
|
delta mag (ΔM) |
2.86 |
|
Spectral class |
F2V (yellow-white) |
|
Pri motion ra |
+107 |
|
Sec motion ra |
|
|
Pri motion dec |
-011 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
78 UMa |
|
Var name |
NSV6058 UMa |
|
Constellation |
Ursa Major |
|
SAO |
28601 |
|
HIP |
63503 |
|
Tycho2 |
3845-01189-1 |
|
Gaia DR2 |
1576850723937017216 |
|
HD |
113139 |
|
HR |
4931 |
|
GC |
17664 |
|
ADS |
8739 |
|
BD |
BD+57 1408 |
|
Flamsteed |
78 Ursae Majoris |
|
Flamsteed name |
78 UMa |
|
Distance |
25.45 |
|
Distance ly |
83.02 |
|
ORBITAL ELEMENTS
Period (P) | 104.9y | ± 0.6 |
Periastron (T) | 1921.224y | ± 0.403 |
Semi-major axis (a) | 1.208a | ± 0.01 |
Eccentricity (e) | 0.388 | ± 0.009 |
Inclination (i) | 46.9° | ± 0.9 |
Longitude of periastron (ω) | 119.2° | ± 1.5 |
Node (Ω) | 88° | ± 1.1 |
Notes | n | |
Reference | Dru2014 | |
Equinox | | |
Last observation | 2012 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
80.2 |
1.358 |
2001 |
81.9 |
1.340 |
2002 |
83.7 |
1.320 |
2003 |
85.6 |
1.297 |
2004 |
87.5 |
1.273 |
2005 |
89.5 |
1.246 |
2006 |
91.6 |
1.216 |
2007 |
93.7 |
1.184 |
2008 |
96.1 |
1.149 |
2009 |
98.5 |
1.111 |
2010 |
101.2 |
1.071 |
2011 |
104.0 |
1.029 |
2012 |
107.2 |
0.983 |
2013 |
110.6 |
0.936 |
2014 |
114.4 |
0.886 |
2015 |
118.6 |
0.835 |
2016 |
123.5 |
0.783 |
2017 |
129.0 |
0.731 |
2018 |
135.3 |
0.681 |
2019 |
142.6 |
0.633 |
2020 |
151.1 |
0.591 |
2021 |
160.7 |
0.556 |
2022 |
171.4 |
0.532 |
2023 |
182.8 |
0.521 |
2024 |
194.5 |
0.523 |
2025 |
205.7 |
0.539 |
2026 |
216.1 |
0.566 |
2027 |
225.4 |
0.600 |
2028 |
233.6 |
0.640 |
2029 |
240.8 |
0.681 |
2030 |
247.3 |
0.722 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|