16044-1122 STF 1998 AC
16h 04m 22.13s -11° 22' 23.2" P.A. 45.00 sep 7.2 mag 4.84,7.30 Sp F5IV+G1V
Coord 2000 |
16044-1122 |
|
Discov num |
STF1998 |
|
Comp |
AC |
|
Coord arcsec 2000 |
16 04 22.13 -11 22 23.2 |
|
Date first |
1780 |
|
Date last |
2019 |
|
Obs |
389 |
|
Pa first |
91 |
|
Pa last |
44.6 |
|
P.A. Now (θ) |
44.6° |
|
Sep first |
6.4 |
|
Sep last |
7.15 |
|
Sep. Now (ρ) |
7.15" |
|
Mag pri |
4.84 |
|
Mag sec |
7.30 |
|
delta mag (ΔM) |
2.46 |
|
Spectral class |
F5IV+G1V (yellow-white/yellow) |
|
Pri motion ra |
-074 |
|
Sec motion ra |
-075 |
|
Pri motion dec |
-033 |
|
Sec motion dec |
-012 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.259 (< 0.3, Physical double)
This double is physical.
16044-1122 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Xi Sco |
159665 |
16 04 22 -11 22 23 |
STF 1998 AB |
2020 |
630 |
12 |
1.2 |
4.84 |
4.86 |
0.02 |
Y |
|
Show |
|
159665 |
16 04 22 -11 22 23 |
STF 1998 AC |
2019 |
389 |
45 |
7.2 |
4.84 |
7.30 |
2.46 |
Y |
<=== |
Show |
|
159665 |
16 04 22 -11 22 20 |
STF 1998 BC |
2019 |
79 |
38 |
8.8 |
4.86 |
7.30 |
2.44 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Scorpius |
|
SAO |
159665 |
|
HIP |
78727 |
|
Tycho2 |
5619-01257-1 |
|
Gaia DR2 |
4343066192367555200 |
|
HD |
144069 |
|
HR |
5977 |
|
GC |
21593 |
|
ADS |
9909 |
|
BD |
BD-10 4237 |
|
Bayer |
Xi Scorpii |
|
Bayer name |
Xi Sco |
|
Bayer greek |
ξ Sco |
|
ORBITAL ELEMENTS
Period (P) | 1514.43y | |
Periastron (T) | 2226.1y | |
Semi-major axis (a) | 7.755a | |
Eccentricity (e) | 0.041 | |
Inclination (i) | 131.5° | |
Longitude of periastron (ω) | 59.3° | |
Node (Ω) | 47.4° | |
Notes | n | |
Reference | Zir2008 | |
Equinox | 2000 | |
Last observation | 2005 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
46.3 |
7.574 |
2001 |
46.1 |
7.572 |
2002 |
46.0 |
7.571 |
2003 |
45.8 |
7.569 |
2004 |
45.6 |
7.567 |
2005 |
45.5 |
7.565 |
2006 |
45.3 |
7.563 |
2007 |
45.2 |
7.561 |
2008 |
45.0 |
7.558 |
2009 |
44.8 |
7.556 |
2010 |
44.7 |
7.554 |
2011 |
44.5 |
7.551 |
2012 |
44.3 |
7.549 |
2013 |
44.2 |
7.546 |
2014 |
44.0 |
7.543 |
2015 |
43.8 |
7.541 |
2016 |
43.7 |
7.538 |
2017 |
43.5 |
7.535 |
2018 |
43.3 |
7.532 |
2019 |
43.2 |
7.529 |
2020 |
43.0 |
7.526 |
2021 |
42.8 |
7.522 |
2022 |
42.7 |
7.519 |
2023 |
42.5 |
7.516 |
2024 |
42.3 |
7.512 |
2025 |
42.2 |
7.509 |
2026 |
42.0 |
7.505 |
2027 |
41.8 |
7.502 |
2028 |
41.6 |
7.498 |
2029 |
41.5 |
7.494 |
2030 |
41.3 |
7.490 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|