10361-2641 BU  411

 
 
10H 36M 04.49S -26 40' 31.6" P.A. 304.1 SEP 1.34 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
2016
Obs
100
Pa first
310
Pa last
305
P.A. Now (θ)
304.1°
Sep first
1.3
Sep last
1.3
Sep. Now (ρ)
1.34"
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
 
 
Constellation
Hydra
SAO
179014
HIP
51885
Tycho2
6628-01612-1
HD
91881
HR
4157
ADS
7846
CD
CD-26 8022
CP
CP-26 4360
Distance
41.25
Distance ly
134.56
last precise pa
304.7
last precise sep
1.32
 
 
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 Grade3(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





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic