13381+3910 STF 1769 AB (HD 118742)
13h 38m 01.95s +39° 10' 41.0" P.A. 45.00 sep 1.6 mag 7.91,10.42 Sp G5 dist. 46 pc (150.05 l.y.)
Coord 2000 |
13381+3910 |
|
Discov num |
STF1769 |
|
Comp |
AB |
|
Coord arcsec 2000 |
13 38 01.95 +39 10 41.0 |
|
Date first |
1832 |
|
Date last |
2015 |
|
Obs |
56 |
|
Pa first |
24 |
|
Pa last |
45.2 |
|
P.A. Now (θ) |
45.2° |
|
Sep first |
2.8 |
|
Sep last |
1.581 |
|
Sep. Now (ρ) |
1.581" |
|
Mag pri |
7.91 |
|
Mag sec |
10.42 |
|
delta mag (ΔM) |
2.51 |
|
Spectral class |
G5 (yellow) |
|
Pri motion ra |
-226 |
|
Sec motion ra |
-226 |
|
Pri motion dec |
-147 |
|
Sec motion dec |
-147 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
13381+3910 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 118742 |
63656 |
13 38 02 +39 10 41 |
STF 1769 AB |
2015 |
56 |
45 |
1.6 |
7.91 |
10.42 |
2.51 |
Y |
<=== |
Show |
|
63656 |
13 38 02 +39 10 41 |
STF 1769 AC |
2015 |
38 |
259 |
56.2 |
7.91 |
9.28 |
1.37 |
|
|
Show |
|
63656 |
13 38 02 +39 10 41 |
STF 1769 AD |
2015 |
8 |
187 |
149.4 |
7.91 |
12.98 |
5.07 |
|
|
Show |
|
63656 |
13 38 02 +39 10 41 |
TOK 29 AE |
2015 |
4 |
254 |
65.6 |
7.91 |
16.10 |
8.19 |
|
|
Show |
|
63656 |
13 38 02 +39 10 41 |
KZA 74 AF |
2015 |
6 |
322 |
100.3 |
7.91 |
13.95 |
6.04 |
|
|
Show |
|
|
13 37 57 +39 10 30 |
STF 1769 CD |
2015 |
7 |
165 |
141.8 |
9.28 |
12.98 |
3.70 |
|
|
Show |
|
|
13 37 57 +39 10 30 |
TOK 29 CE |
2015 |
5 |
231 |
10.5 |
9.29 |
16.10 |
6.81 |
|
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Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 118742 |
|
Constellation |
Canes Venatici |
|
SAO |
63656 |
|
HIP |
66514 |
|
Tycho2 |
3026-00015-1 |
|
Gaia DR2 |
1475768973567635456 |
|
HD |
118742 |
|
GC |
18440 |
|
ADS |
8981 |
|
BD |
BD+39 2663 |
|
Distance |
46 |
|
Distance ly |
150.05 |
|
ORBITAL ELEMENTS
Period (P) | 2616.3566y | ± 1148.0789 |
Periastron (T) | 2327.7903y | ± 619.8395 |
Semi-major axis (a) | 4.97148a | ± 3.86654 |
Eccentricity (e) | 0.79906 | ± 0.16163 |
Inclination (i) | 75.356° | ± 13.034 |
Longitude of periastron (ω) | 40.904° | ± 120.537 |
Node (Ω) | 173.088° | ± 22.057 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
41.5 |
1.661 |
2001 |
41.6 |
1.653 |
2002 |
41.8 |
1.646 |
2003 |
42.0 |
1.638 |
2004 |
42.2 |
1.631 |
2005 |
42.4 |
1.624 |
2006 |
42.6 |
1.616 |
2007 |
42.8 |
1.609 |
2008 |
43.0 |
1.602 |
2009 |
43.2 |
1.594 |
2010 |
43.4 |
1.587 |
2011 |
43.6 |
1.580 |
2012 |
43.8 |
1.572 |
2013 |
44.0 |
1.565 |
2014 |
44.3 |
1.558 |
2015 |
44.5 |
1.551 |
2016 |
44.7 |
1.543 |
2017 |
44.9 |
1.536 |
2018 |
45.1 |
1.529 |
2019 |
45.3 |
1.522 |
2020 |
45.6 |
1.514 |
2021 |
45.8 |
1.507 |
2022 |
46.0 |
1.500 |
2023 |
46.3 |
1.493 |
2024 |
46.5 |
1.486 |
2025 |
46.7 |
1.479 |
2026 |
47.0 |
1.472 |
2027 |
47.2 |
1.465 |
2028 |
47.4 |
1.457 |
2029 |
47.7 |
1.450 |
2030 |
47.9 |
1.443 |
|
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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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