09110-1929 I   824

 
 
09h 11m 00.59s -19 28' 59.1" P.A. 162.20 sep 0.1 mag 9.30,9.40 Sp F0mdD
 
 
Coord 2000
09110-1929
Discov num
I   824
Comp
Coord arcsec 2000
09 11 00.59 -19 28 59.1
Date first
1910
Date last
2019
Obs
16
Pa first
260
Pa last
160
P.A. Now (θ)
162.2°
Sep first
0.5
Sep last
0.1
Sep. Now (ρ)
0.08"
Mag pri
9.30
Mag sec
9.40
delta mag (ΔM)
0.1
Spectral class
F0mdD (yellow-white)
Pri motion ra
-022
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
N (See Notes)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.2
Precise sep
0.074
Constellation
Hydra
SAO
154979
Tycho2
6035-01215-1
Gaia DR2
71631938944
HD
79034
ADS
7225
last precise pa
160.2
last precise sep
0.074
 
 
ORBITAL ELEMENTS
 
 
Period (P)940y Periastron (T)2029.4y Semi-major axis (a)0.492a
Eccentricity (e)0.869 Inclination (i)130.3° Longitude of periastron (ω)18°
Node (Ω)116.5° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.139 223.6
2001 0.135 222.0
2002 0.131 220.3
2003 0.127 218.6
2004 0.123 216.7
2005 0.119 214.6
2006 0.116 212.5
2007 0.112 210.2
2008 0.108 207.7
2009 0.105 205.1
2010 0.101 202.3
2011 0.098 199.3
2012 0.095 196.1
2013 0.092 192.7
2014 0.089 189.1
2015 0.086 185.2
2016 0.084 181.1
2017 0.081 176.7
2018 0.079 172.1
2019 0.077 167.3
2020 0.076 162.2
2021 0.074 157.0
2022 0.073 151.5
2023 0.072 145.9
2024 0.071 140.1
2025 0.070 134.1
2026 0.069 127.9
2027 0.067 121.5
2028 0.065 114.7
2029 0.063 107.6
2030 0.061 100.0

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






wds09110-1929a.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
09110-1929 I 824 1989 12 236 0.2 9.30 9.40 N 091100.59-192859.1
09110-1929 I 824 2018 14 171 0.1 9.30 9.40 F0mdD N 091100.59-192859.1
09110-1929 I 824 2019 16 160 0.1 9.30 9.40 F0mdD N 091100.59-192859.1

If you need more information about this double, apply for a data request form to the WDS.