13040-1738 BU  798AB

 
 
13h 04m 02.74s -17 37' 29.9" P.A. 176.5 sep 0.33 mag 9.16,9.67 Sp K0V dist. 58 pc (189.2 l.y.)
 
 
Coord 2000
13040-1738
Discov num
BU  798
Comp
AB
Coord arcsec 2000
13 04 02.74 -17 37 29.9
Date first
1881
Date last
2014
Obs
20
Pa first
174
Pa last
176
P.A. Now (θ)
176.5°
Sep first
0.5
Sep last
0.4
Sep. Now (ρ)
0.33"
Mag pri
9.16
Mag sec
9.67
delta mag (ΔM)
0.51
Spectral class
K0V (yellow-orange)
Pri motion ra
+029
Sec motion ra
Pri motion dec
-158
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
13040-1738 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 157692 13040-1738 BU 798 AB 1881 2014 20 176 0.3 9.16 9.67 0.51 Y <===
Show 157692 13040-1738 UC 2465 AC 1998 2016 3 204 121.9 9.16 12.92 3.76
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
176.2
Precise sep
0.392
Constellation
Virgo
SAO
157692
HIP
63754
Tycho2
6115-00154-1
HD
113460
ADS
8764
BD
BD-16 3591
Distance
58
Distance ly
189.2
last precise pa
176.2
last precise sep
0.392
 
 
ORBITAL ELEMENTS
 
 
Period (P)60.2y Periastron (T)1980.3y Semi-major axis (a)0.352a
Eccentricity (e)0.431 Inclination (i)84.8° Longitude of periastron (ω)209.6°
Node (Ω)170.9° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.460 170.9
2001 0.467 171.2
2002 0.472 171.5
2003 0.475 171.8
2004 0.476 172.0
2005 0.475 172.3
2006 0.472 172.6
2007 0.467 172.8
2008 0.461 173.1
2009 0.453 173.4
2010 0.443 173.7
2011 0.431 174.0
2012 0.418 174.4
2013 0.404 174.7
2014 0.388 175.1
2015 0.370 175.5
2016 0.351 176.0
2017 0.331 176.5
2018 0.309 177.1
2019 0.286 177.8
2020 0.261 178.6
2021 0.236 179.6
2022 0.210 180.8
2023 0.182 182.4
2024 0.154 184.6
2025 0.125 187.7
2026 0.096 192.8
2027 0.067 202.3
2028 0.043 223.9
2029 0.033 272.0
2030 0.049 311.9

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

grafico orbita





wds13040-1738a.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
13040-1738 BU 798 AB 2009 19 174 0.5 9.16 9.67 K0V NO 130402.74-173729.9
13040-1738 BU 798 AB 2014 20 176 0.4 9.16 9.67 K0V NO 130402.74-173729.9

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