08447-5443 I 10 AB (Alsephina)
08h 44m 42.23s -54° 42' 31.8" P.A. 189.00 sep 0.9 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 |
2021 |
|
Obs |
75 |
|
| Pa first |
177 |
|
Pa last |
188.5 |
|
P.A. Now (θ) |
189.8° |
|
| Sep first |
2.2 |
|
Sep last |
0.939 |
|
Sep. Now (ρ) |
1.024" |
|
| 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 |
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) | 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° | |
Notes | n | |
Reference | Msn2011b | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
344.1 |
1.038 |
| 2001 |
341.9 |
1.022 |
| 2002 |
339.6 |
0.994 |
| 2003 |
337.2 |
0.954 |
| 2004 |
334.5 |
0.904 |
| 2005 |
331.5 |
0.846 |
| 2006 |
328.0 |
0.781 |
| 2007 |
323.9 |
0.712 |
| 2008 |
318.8 |
0.640 |
| 2009 |
312.4 |
0.569 |
| 2010 |
304.3 |
0.502 |
| 2011 |
293.9 |
0.444 |
| 2012 |
280.9 |
0.403 |
| 2013 |
265.7 |
0.384 |
| 2014 |
250.1 |
0.391 |
| 2015 |
236.0 |
0.423 |
| 2016 |
224.4 |
0.475 |
| 2017 |
215.3 |
0.540 |
| 2018 |
208.3 |
0.614 |
| 2019 |
202.9 |
0.693 |
| 2020 |
198.6 |
0.774 |
| 2021 |
195.1 |
0.857 |
| 2022 |
192.2 |
0.941 |
| 2023 |
189.8 |
1.024 |
| 2024 |
187.8 |
1.106 |
| 2025 |
186.0 |
1.188 |
| 2026 |
184.5 |
1.267 |
| 2027 |
183.1 |
1.346 |
| 2028 |
181.9 |
1.422 |
| 2029 |
180.8 |
1.497 |
| 2030 |
179.9 |
1.570 |
| 2031 |
179.0 |
1.641 |
| 2032 |
178.1 |
1.710 |
| 2033 |
177.4 |
1.778 |
| 2034 |
176.7 |
1.843 |
| 2035 |
176.0 |
1.906 |
| 2036 |
175.4 |
1.967 |
| 2037 |
174.8 |
2.027 |
| 2038 |
174.3 |
2.084 |
| 2039 |
173.7 |
2.139 |
| 2040 |
173.2 |
2.193 |
| 2041 |
172.8 |
2.244 |
| 2042 |
172.3 |
2.294 |
| 2043 |
171.9 |
2.342 |
| 2044 |
171.5 |
2.387 |
| 2045 |
171.1 |
2.431 |
| 2046 |
170.7 |
2.473 |
| 2047 |
170.3 |
2.513 |
| 2048 |
170.0 |
2.552 |
| 2049 |
169.6 |
2.588 |
| 2050 |
169.3 |
2.623 |
|
|
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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