14485-1720 BU  346

 
 
14h 48m 31.71s -17 20' 24.4" P.A. 277.80 sep 2.7 mag 7.48,7.92 Sp G1V dist. 44.5 pc (145.16 l.y.)
 
 
Coord 2000
14485-1720
Discov num
BU  346
Comp
Coord arcsec 2000
14 48 31.71 -17 20 24.4
Date first
1875
Date last
2020
Obs
75
Pa first
250
Pa last
277
P.A. Now (θ)
277.8°
Sep first
1.0
Sep last
2.8
Sep. Now (ρ)
2.74"
Mag pri
7.48
Mag sec
7.92
delta mag (ΔM)
0.44
Spectral class
G1V (yellow)
Pri motion ra
+026
Sec motion ra
+039
Pri motion dec
-061
Sec motion dec
-048
Notes
N C (See Notes, Has orbit and linear solution)
Visually invisible, K-band or other infrared star rPM=0.277 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
276.7
Precise sep
2.8
Constellation
Libra
SAO
158813
HIP
72423
Tycho2
6159-00749-1
Gaia DR2
05924196864
HD
130412
ADS
9387
BD
BD-16 3939
Distance
44.5
Distance ly
145.16
last precise pa
276.7
last precise sep
2.8
 
 
ORBITAL ELEMENTS
 
 
Period (P)1715.7084y± 857.6437 Periastron (T)2129.6651y± 164.4848 Semi-major axis (a)9.40469a± 5.12838
Eccentricity (e)0.82703± 0.1309 Inclination (i)85.071°± 5.309 Longitude of periastron (ω)244.985°± 41.491
Node (Ω)108.072°± 5.868 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 2.546 275.2
2001 2.556 275.3
2002 2.566 275.5
2003 2.576 275.6
2004 2.586 275.8
2005 2.596 275.9
2006 2.606 276.0
2007 2.616 276.1
2008 2.626 276.3
2009 2.636 276.4
2010 2.645 276.5
2011 2.655 276.7
2012 2.664 276.8
2013 2.673 276.9
2014 2.683 277.0
2015 2.692 277.2
2016 2.701 277.3
2017 2.710 277.4
2018 2.719 277.5
2019 2.727 277.7
2020 2.736 277.8
2021 2.745 277.9
2022 2.753 278.0
2023 2.761 278.1
2024 2.769 278.2
2025 2.778 278.4
2026 2.785 278.5
2027 2.793 278.6
2028 2.801 278.7
2029 2.808 278.8
2030 2.816 278.9

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
 
grafico orbita






wds14485-1720a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
14485-1720 BU 346 2007 62 276 2.5 7.48 7.92 G1V LD 144831.71-172024.4
14485-1720 BU 346 2009 63 276 2.6 7.48 7.92 G1V LD 144831.71-172024.4
14485-1720 BU 346 2010 65 276 2.5 7.48 7.92 G1V LD 144831.71-172024.4
14485-1720 BU 346 2014 67 278 2.7 7.48 7.92 G1V LD 144831.71-172024.4
14485-1720 BU 346 2016 68 277 2.7 7.48 7.92 G1V NL 144831.71-172024.4
14485-1720 BU 346 2017 69 277 2.7 7.48 7.92 G1V NL 144831.71-172024.4
14485-1720 BU 346 2019 74 277 2.8 7.48 7.92 G1V NC 144831.71-172024.4
14485-1720 BU 346 2020 75 277 2.8 7.48 7.92 G1V NC 144831.71-172024.4

If you need more information about this double, apply for a data request form to the WDS.