08579-4744 SNA 9 Aa,Ab
08h 57m 54.61s -47° 44' 15.7" P.A. 329.00 sep 0.0 mag 6.30,7.40 Sp O5I
Coord 2000 |
08579-4744 |
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Discov num |
SNA 9 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
08 57 54.61 -47 44 15.7 |
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Date first |
2012 |
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Date last |
2015 |
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Obs |
16 |
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Pa first |
295 |
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Pa last |
329.2 |
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P.A. Now (θ) |
329.2° |
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Sep first |
0.0 |
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Sep last |
0.001 |
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Sep. Now (ρ) |
0.001" |
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Mag pri |
6.30 |
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Mag sec |
7.40 |
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delta mag (ΔM) |
1.1 |
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Spectral class |
O5I (blue) |
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Pri motion ra |
-004 |
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Sec motion ra |
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Pri motion dec |
+004 |
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Sec motion dec |
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Notes |
N
V
K
(See Notes, Proper motion indicates physical, K-band or other infrared magnitudes) |
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Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
08579-4744 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
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08 57 55 -47 44 16 |
SNA 9 Aa,Ab |
2015 |
16 |
329 |
0.0 |
6.30 |
7.40 |
1.10 |
Y |
<=== |
Show |
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08 57 55 -47 44 16 |
SNA 9 AB |
2015 |
2 |
112 |
5.2 |
6.06 |
13.01 |
6.95 |
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Vela |
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Gaia DR2 |
5328579939188867200 |
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ORBITAL ELEMENTS
Period (P) | 656d | ± 2.3 |
Periastron (T) | 56066.8d (2012.382y) | ± 2.9 |
Semi-major axis (a) | 3.44m | ± 0.18 |
Eccentricity (e) | 0.663 | ± 0.013 |
Inclination (i) | 142.2° | ± 4.6 |
Longitude of periastron (ω) | 87.7° | ± 6 |
Node (Ω) | 92.3° | ± 6.4 |
Notes | | |
Reference | LeB2017 | |
Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
250.6 |
0.003 |
2001-01-01 |
164.3 |
0.004 |
2002-01-01 |
223.9 |
0.004 |
2003-01-01 |
146.4 |
0.004 |
2004-01-01 |
206.4 |
0.004 |
2005-01-01 |
119.4 |
0.003 |
2006-01-01 |
191.8 |
0.005 |
2007-01-01 |
354.9 |
0.001 |
2008-01-01 |
177.7 |
0.004 |
2009-01-01 |
247.1 |
0.003 |
2010-01-01 |
162.7 |
0.004 |
2011-01-01 |
221.9 |
0.004 |
2012-01-01 |
144.4 |
0.004 |
2013-01-01 |
205.0 |
0.004 |
2014-01-01 |
115.5 |
0.003 |
2015-01-01 |
190.4 |
0.005 |
2016-01-01 |
325.7 |
0.001 |
2017-01-01 |
176.4 |
0.004 |
2018-01-01 |
243.9 |
0.003 |
2019-01-01 |
161.1 |
0.004 |
2020-01-01 |
220.1 |
0.004 |
2021-01-01 |
142.3 |
0.004 |
2022-01-01 |
203.5 |
0.004 |
2023-01-01 |
111.2 |
0.002 |
2024-01-01 |
189.1 |
0.005 |
2025-01-01 |
304.9 |
0.001 |
2026-01-01 |
175.0 |
0.004 |
2027-01-01 |
240.9 |
0.003 |
2028-01-01 |
159.5 |
0.004 |
2029-01-01 |
218.3 |
0.004 |
2030-01-01 |
140.1 |
0.004 |
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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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