10361-2641 BU  411

 
 
10h 36m 04.49s -26 40' 31.6" P.A. 303.7 sep 1.33 mag 6.68,7.77 Sp F6V dist. 41.25 pc (134.56 l.y.)
 
 
Coord 2000
10361-2641
Discov num
BU  411
Comp
Coord arcsec 2000
10 36 04.49 -26 40 31.6
Date first
1876
Date last
2017
Obs
103
Pa first
310
Pa last
304
P.A. Now (θ)
303.7°
Sep first
1.3
Sep last
1.3
Sep. Now (ρ)
1.33"
Mag pri
6.68
Mag sec
7.77
delta mag (ΔM)
1.09
Spectral class
F6V (yellow-white)
Pri motion ra
-008
Sec motion ra
-008
Pri motion dec
-086
Sec motion dec
-086
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
304
Precise sep
1.33
Cdsa2 id
BU 411
Constellation
Hydra
SAO
179014
HIP
51885
Tycho2
6628-01612-1
HD
91881
HR
4157
ADS
7846
CD
CD-26 8022
CP
CP-26 4360
Ra deg
10.601247222222222
De deg
-26.675444444444445
Distance
41.25
Distance ly
134.56
last precise pa
304
last precise sep
1.33
 
 
ORBITAL ELEMENTS
 
 
Period (P)158.5y± 2.4 Periastron (T)1948.82y± 0.53 Semi-major axis (a)0.88a± 0.013
Eccentricity (e)0.759± 0.01 Inclination (i)127.7°± 1.7 Longitude of periastron (ω)43.2°± 1.9
Node (Ω)149.5°± 1.5 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 1.303 310.8
2001 1.308 310.4
2002 1.313 310.0
2003 1.317 309.6
2004 1.321 309.2
2005 1.324 308.8
2006 1.327 308.4
2007 1.330 308.0
2008 1.332 307.6
2009 1.334 307.2
2010 1.335 306.8
2011 1.336 306.4
2012 1.337 306.0
2013 1.337 305.6
2014 1.337 305.3
2015 1.337 304.9
2016 1.336 304.5
2017 1.335 304.1
2018 1.334 303.7
2019 1.332 303.3
2020 1.330 302.9
2021 1.327 302.5
2022 1.325 302.1
2023 1.322 301.7
2024 1.318 301.3
2025 1.314 300.9
2026 1.310 300.5
2027 1.306 300.1
2028 1.302 299.7
2029 1.297 299.2
2030 1.291 298.8

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

grafico orbita





wds10361-2641a.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
10361-2641 BU 411 1998 90 310 1.3 6.68 7.77 F6V NOD 103604.49-264031.6
10361-2641 BU 411 2009 91 307 1.3 6.68 7.77 F6V NOD 103604.49-264031.6
10361-2641 BU 411 2010 92 307 1.3 6.68 7.77 F6V NOD 103604.49-264031.6
10361-2641 BU 411 2012 94 306 1.3 6.68 7.77 F6V NOD 103604.49-264031.6
10361-2641 BU 411 2013 95 306 1.3 6.68 7.77 F6V NOD 103604.49-264031.6
10361-2641 BU 411 2014 96 306 1.3 6.68 7.77 F6V NO 103604.49-264031.6
10361-2641 BU 411 2015 98 305 1.3 6.68 7.77 F6V NO 103604.49-264031.6
10361-2641 BU 411 2016 100 305 1.3 6.68 7.77 F6V NO 103604.49-264031.6
10361-2641 BU 411 2017 103 304 1.3 6.68 7.77 F6V NO 103604.49-264031.6

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