08447-5443 I    10AB (Del Vel)

 
 
08h 44m 42.23s -54 42' 31.8" P.A. 215.3 sep 0.54 mag 1.99,5.57 Sp A1Va+F8V dist. 24.7 pc (80.57 l.y.)
 
 
Coord 2000
08447-5443
Discov num
I    10
Comp
AB
Coord arcsec 2000
08 44 42.23 -54 42 31.8
Date first
1894
Date last
2013
Obs
65
Pa first
177
Pa last
263
P.A. Now (θ)
215.3°
Sep first
2.2
Sep last
0.4
Sep. Now (ρ)
0.54"
Mag pri
1.99
Mag sec
5.57
delta mag (ΔM)
3.58
Spectral class
A1Va+F8V (white/yellow-white)
Pri motion ra
+029
Sec motion ra
-002
Pri motion dec
-104
Sec motion dec
-056
Notes
N O (See Notes, Orbital solution)
rPM=0.529
This double is physical.
 
 
08447-5443 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 236232 08447-5443 KEL 1 Aa,Ab 2005 2009 4 158 0.0 1.99 Y
Show Del Vel 236232 08447-5443 I 10 AB 1894 2013 65 215 0.5 1.99 5.57 3.58 Y <===
Show 236232 08447-5443 HJ 4136 AC 1834 1998 9 56 72.0 1.99 14.90 12.91
Show 236232 08447-5443 I 10 AE 1900 1998 3 251 76.8 1.99 14.70 12.71
Show 236232 08447-5443 SHY 49 AF 1991 1999 3 99 999.9 1.99 5.75 3.76
Show 08447-5443 HJ 4136 CD 1927 1998 4 88 5.6 11.00 13.50 2.50
Septuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
262.9
Precise sep
0.365
Name
Del Vel
Constellation
Vela
SAO
236232
HIP
42913
HD
74956
HR
3485
GC
12069
GL
Gl 321.3A
CP
CP-54 1788
Bayer
Delta Velorum
Bayer name
Del Vel
Distance
24.7
Distance ly
80.57
last precise pa
262.9
last precise sep
0.365
 
 
ORBITAL ELEMENTS
 
 
Period (P)146.97y Periastron (T)2000.78y Semi-major axis (a)2.002a
Eccentricity (e)0.482 Inclination (i)105.6° Longitude of periastron (ω)8.5°
Node (Ω)344.7° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 1.038 344.1
2001 1.022 341.9
2002 0.994 339.6
2003 0.954 337.2
2004 0.904 334.5
2005 0.846 331.5
2006 0.781 328.0
2007 0.712 323.9
2008 0.640 318.8
2009 0.569 312.4
2010 0.502 304.3
2011 0.444 293.9
2012 0.403 280.9
2013 0.384 265.7
2014 0.391 250.1
2015 0.423 236.0
2016 0.475 224.4
2017 0.540 215.3
2018 0.614 208.3
2019 0.693 202.9
2020 0.774 198.6
2021 0.857 195.1
2022 0.941 192.2
2023 1.024 189.8
2024 1.106 187.8
2025 1.188 186.0
2026 1.267 184.5
2027 1.346 183.1
2028 1.422 181.9
2029 1.497 180.8
2030 1.570 179.9

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

grafico orbita





wds08447-5443d.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
08447-5443 I 10 AB 2001 38 338 1.0 1.99 5.57 A1V NOD 084442.20-544230.8
08447-5443 I 10 AB 2010 39 304 0.5 1.99 5.57 A1V NOD 084442.20-544230.8
08447-5443 I 10 AB 2011 52 294 0.4 1.99 5.57 A1V F8V NOD 084442.22-544231.7
08447-5443 I 10 AB 2012 53 280 0.4 1.99 5.57 A1V F8V NOD 084442.22-544231.7
08447-5443 I 10 AB 2013 54 263 0.4 1.99 5.57 A1V F8V NOD 084442.22-544231.7

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