08447-5443 KEL 1 Aa,Ab
08h 44m 42.23s -54° 42' 31.8" P.A. 324.00 sep 0.0 mag 1.99, Sp A1Va+A4V dist. 24.7 pc (80.57 l.y.)
| Coord 2000 |
08447-5443 |
|
Discov num |
KEL 1 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
08 44 42.23 -54 42 31.8 |
|
| Date first |
2005 |
|
Date last |
2018 |
|
Obs |
6 |
|
| Pa first |
331 |
|
Pa last |
324.4 |
|
P.A. Now (θ) |
324.4° |
|
| Sep first |
0.0 |
|
Sep last |
0.024 |
|
Sep. Now (ρ) |
0.024" |
|
| Mag pri |
1.99 |
|
Mag sec |
|
|
delta mag (ΔM) |
|
|
Spectral class |
A1Va+A4V (white/white) |
|
| Pri motion ra |
+029 |
|
Sec motion ra |
|
|
| Pri motion dec |
-104 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
08447-5443 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
236232 |
08 44 42 -54 42 32 |
KEL 1 Aa,Ab |
2018 |
6 |
324 |
0.0 |
1.99 |
|
|
Y |
<=== |
| Show |
Alsephina |
236232 |
08 44 42 -54 42 32 |
I 10 AB |
2021 |
75 |
189 |
0.9 |
1.99 |
5.57 |
3.58 |
Y |
|
| Show |
|
236232 |
08 44 42 -54 42 32 |
HJ 4136 AC |
1998 |
9 |
56 |
72.0 |
1.99 |
14.90 |
12.91 |
|
|
| Show |
|
236232 |
08 44 42 -54 42 32 |
I 10 AE |
1998 |
3 |
251 |
76.8 |
1.99 |
14.70 |
12.71 |
|
|
| Show |
|
236232 |
08 44 42 -54 42 32 |
SHY 49 AF |
2016 |
4 |
100 |
999.9 |
1.99 |
5.75 |
3.76 |
|
|
| Show |
|
|
08 44 49 -54 41 50 |
HJ 4136 CD |
2015 |
5 |
86 |
5.6 |
11.00 |
13.50 |
2.50 |
|
|
Septuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Alsephina |
|
Constellation |
Vela |
|
SAO |
236232 |
|
HIP |
42913 |
|
| Tycho2 |
8573-03571-1 |
|
Gaia DR2 |
5317047711486539392 |
|
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 |
|
Bayer greek |
δ Vel |
|
ORBITAL ELEMENTS
| Period (P) | 45.1503d | ± 0.0002 |
Periastron (T) | 52528.9502m (2002.697y) | ± 0.0002 |
Semi-major axis (a) | 16.51m | ± 0.16 |
| Eccentricity (e) | 0.287 | ± 0.001 |
Inclination (i) | 90.96° | ± 0.03 |
Longitude of periastron (ω) | 109.79° | ± 0.09 |
| Node (Ω) | 155° | ± 0.6 |
Notes | n | |
Reference | Mrd2011 | |
| Equinox | | |
Last observation | 2009 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
334.5 |
0.014 |
| 2001-01-01 |
333.5 |
0.010 |
| 2002-01-01 |
329.6 |
0.004 |
| 2003-01-01 |
160.7 |
0.004 |
| 2004-01-01 |
156.8 |
0.010 |
| 2005-01-01 |
155.9 |
0.015 |
| 2006-01-01 |
155.4 |
0.017 |
| 2007-01-01 |
154.9 |
0.016 |
| 2008-01-01 |
154.0 |
0.009 |
| 2009-01-01 |
339.7 |
0.002 |
| 2010-01-01 |
335.4 |
0.012 |
| 2011-01-01 |
334.6 |
0.014 |
| 2012-01-01 |
333.7 |
0.011 |
| 2013-01-01 |
331.1 |
0.005 |
| 2014-01-01 |
163.7 |
0.002 |
| 2015-01-01 |
157.1 |
0.009 |
| 2016-01-01 |
156.0 |
0.014 |
| 2017-01-01 |
155.4 |
0.017 |
| 2018-01-01 |
155.0 |
0.017 |
| 2019-01-01 |
154.2 |
0.011 |
| 2020-01-01 |
17.0 |
|
| 2021-01-01 |
335.6 |
0.011 |
| 2022-01-01 |
334.7 |
0.014 |
| 2023-01-01 |
333.9 |
0.012 |
| 2024-01-01 |
332.0 |
0.006 |
| 2025-01-01 |
173.6 |
0.001 |
| 2026-01-01 |
157.4 |
0.008 |
| 2027-01-01 |
156.1 |
0.013 |
| 2028-01-01 |
155.5 |
0.017 |
| 2029-01-01 |
155.0 |
0.017 |
| 2030-01-01 |
154.4 |
0.012 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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