10038-0823 HDS1454

 
 
10h 03m 49.96s -08 23' 08.7" P.A. 24.70 sep 0.1 mag 9.66,9.84 Sp F5 dist. 129.37 pc (422 l.y.)
 
 
Coord 2000
10038-0823
Discov num
HDS1454
Comp
Coord arcsec 2000
10 03 49.96 -08 23 08.7
Date first
1991
Date last
2020
Obs
8
Pa first
20
Pa last
27
P.A. Now (θ)
24.7°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.11"
Mag pri
9.66
Mag sec
9.84
delta mag (ΔM)
0.18
Spectral class
F5 (yellow-white)
Pri motion ra
-011
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
26.8
Precise sep
0.104
Constellation
Sextans
HIP
49305
Tycho2
5476-00830-1
Gaia DR2
3772130481697461504
HD
87273
BD
BD-07 2948
Distance
129.37
Distance ly
422
last precise pa
26.8
last precise sep
0.104
 
 
ORBITAL ELEMENTS
 
 
Period (P)32.46y Periastron (T)2010.87y Semi-major axis (a)0.086a
Eccentricity (e)0.7 Inclination (i)128.3° Longitude of periastron (ω)335.3°
Node (Ω)175° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2020
label rho theta
2000 0.134 0.7
2001 0.130 358.6
2002 0.124 356.4
2003 0.117 353.9
2004 0.109 351.1
2005 0.099 347.7
2006 0.088 343.6
2007 0.073 337.9
2008 0.057 329.3
2009 0.038 312.4
2010 0.021 262.4
2011 0.026 183.3
2012 0.030 137.4
2013 0.034 100.4
2014 0.043 75.0
2015 0.054 59.2
2016 0.065 48.9
2017 0.076 41.5
2018 0.086 36.0
2019 0.095 31.5
2020 0.104 27.9
2021 0.111 24.7
2022 0.118 22.0
2023 0.124 19.5
2024 0.128 17.2
2025 0.133 15.1
2026 0.136 13.0
2027 0.138 11.1
2028 0.139 9.2
2029 0.140 7.4
2030 0.139 5.5


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



 
 


wds10038-0823a.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
10038-0823 HDS1454 1991 1 20 0.1 9.66 9.84 F5 100349.96-082308.7
10038-0823 HDS1454 2017 5 40 0.1 9.66 9.84 F5 100349.96-082308.7
10038-0823 HDS1454 2018 6 36 0.1 9.66 9.84 F5 100349.96-082308.7
10038-0823 HDS1454 2019 7 31 0.1 9.66 9.84 F5 100349.96-082308.7

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