15462-2804 BU 620 AB (HD 140722)
15h 46m 12.89s -28° 03' 41.1" P.A. 355.00 sep 0.7 mag 7.58,7.03 Sp F2IV dist. 71.12 pc (231.99 l.y.)
Coord 2000 |
15462-2804 |
|
Discov num |
BU 620 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 46 12.89 -28 03 41.1 |
|
Date first |
1878 |
|
Date last |
2021 |
|
Obs |
65 |
|
Pa first |
167 |
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Pa last |
354.5 |
|
P.A. Now (θ) |
354.5° |
|
Sep first |
0.9 |
|
Sep last |
0.65 |
|
Sep. Now (ρ) |
0.65" |
|
Mag pri |
7.58 |
|
Mag sec |
7.03 |
|
delta mag (ΔM) |
0.55 |
|
Spectral class |
F2IV (yellow-white) |
|
Pri motion ra |
-060 |
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Sec motion ra |
-060 |
|
Pri motion dec |
-019 |
|
Sec motion dec |
-019 |
|
Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
15462-2804 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
183772 |
15 46 13 -28 03 41 |
CHR 50 Aa,Ab |
2006 |
4 |
287 |
0.1 |
6.61 |
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Show |
HD 140722 |
183772 |
15 46 13 -28 03 41 |
BU 620 AB |
2021 |
65 |
355 |
0.7 |
7.58 |
7.03 |
0.55 |
Y |
<=== |
Show |
|
183772 |
15 46 13 -28 03 41 |
HJ 4803 AC |
2016 |
26 |
213 |
50.5 |
7.58 |
8.97 |
1.39 |
|
|
Show |
|
|
15 46 11 -28 04 23 |
KOH 49 Ca,Cb |
2021 |
10 |
187 |
0.1 |
8.00 |
8.70 |
0.70 |
Y |
|
Quintuple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 140722 |
|
Constellation |
Libra |
|
SAO |
183772 |
|
HIP |
77235 |
|
Tycho2 |
6786-02143-1 |
|
Gaia DR2 |
6233447046421213056 |
|
HD |
140722 |
|
HR |
5856 |
|
GC |
21182 |
|
ADS |
9775 |
|
CD |
CD-2710550 |
|
CP |
CP-27 5250 |
|
Distance |
71.12 |
|
Distance ly |
231.99 |
|
ORBITAL ELEMENTS
Period (P) | 700y | |
Periastron (T) | 2175.65y | |
Semi-major axis (a) | 1.5a | |
Eccentricity (e) | 0.859 | |
Inclination (i) | 86.3° | |
Longitude of periastron (ω) | 89.5° | |
Node (Ω) | 6.3° | |
Notes | n | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
352.3 |
0.597 |
2001 |
352.5 |
0.600 |
2002 |
352.6 |
0.603 |
2003 |
352.7 |
0.605 |
2004 |
352.8 |
0.608 |
2005 |
352.9 |
0.610 |
2006 |
353.0 |
0.613 |
2007 |
353.1 |
0.616 |
2008 |
353.2 |
0.618 |
2009 |
353.3 |
0.621 |
2010 |
353.4 |
0.623 |
2011 |
353.5 |
0.626 |
2012 |
353.6 |
0.629 |
2013 |
353.7 |
0.631 |
2014 |
353.8 |
0.634 |
2015 |
353.9 |
0.636 |
2016 |
353.9 |
0.638 |
2017 |
354.0 |
0.641 |
2018 |
354.1 |
0.643 |
2019 |
354.2 |
0.646 |
2020 |
354.3 |
0.648 |
2021 |
354.4 |
0.651 |
2022 |
354.5 |
0.653 |
2023 |
354.6 |
0.655 |
2024 |
354.7 |
0.658 |
2025 |
354.8 |
0.660 |
2026 |
354.9 |
0.662 |
2027 |
354.9 |
0.665 |
2028 |
355.0 |
0.667 |
2029 |
355.1 |
0.669 |
2030 |
355.2 |
0.672 |
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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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