18039-2422 SNA  78 (9 Sgr)

 
 
18h 03m 52.44s -24 21' 38.6" P.A. 68 mag 6.30,6.80 Sp O4V dist. 2040.82 pc (6657.15 l.y.)
 
 
Coord 2000
18039-2422
Discov num
SNA  78
Comp
Coord arcsec 2000
18 03 52.44 -24 21 38.6
Date first
2009
Date last
2016
Obs
19
Pa first
70
Pa last
68
P.A. Now (θ)
68°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
6.30
Mag sec
6.80
delta mag (ΔM)
0.5
Spectral class
O4V (blue)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
9 Sgr
Constellation
Sagittarius
SAO
186204
HIP
88469
Tycho2
6842-01702-1
HD
164794
HR
6736
GC
24574
CD
CD-2413814
CP
CP-24 6144
Flamsteed
9 Sagittarii
Flamsteed name
9 Sgr
Distance
2040.82
Distance ly
6657.15
last precise pa
68
last precise sep
0.022
 
 
ORBITAL ELEMENTS
 
 
Period (P)3310.4d (9.06y)± 7 Periastron (T)46613d (1986.498y)± 21 Semi-major axis (a)14.78m± 0.13
Eccentricity (e)0.6508± 0.0039 Inclination (i)86.64°± 0.53 Longitude of periastron (ω)210.4°± 1.3
Node (Ω)67.21°± 0.51 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000-01-01 0.021 69.1
2001-01-01 0.018 70.1
2002-01-01 0.013 71.7
2003-01-01 0.005 77.3
2004-01-01 0.004 239.2
2005-01-01 0.002 53.5
2006-01-01 0.014 66.1
2007-01-01 0.020 67.4
2008-01-01 0.022 68.2
2009-01-01 0.021 69.0
2010-01-01 0.018 70.0
2011-01-01 0.013 71.6
2012-01-01 0.006 76.5
2013-01-01 0.003 237.0
2014-01-01 0.001 32.0
2015-01-01 0.014 66.0
2016-01-01 0.020 67.4
2017-01-01 0.022 68.2
2018-01-01 0.022 69.0
2019-01-01 0.019 69.9
2020-01-01 0.013 71.5
2021-01-01 0.006 75.9
2022-01-01 0.003 234.0
2023-01-01 0.001 278.6
2024-01-01 0.013 65.9
2025-01-01 0.020 67.3
2026-01-01 0.022 68.1
2027-01-01 0.022 68.9
2028-01-01 0.019 69.9
2029-01-01 0.014 71.3
2030-01-01 0.007 75.3

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18039-2422 SNA 78 2013 1 242 0.0 6.30 6.80 O4V V K 180352.44-242138.6

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