19598-0957 HO  276

 
 
19h 59m 47.49s -09 57' 26.2" P.A. 123.30 sep 0.2 mag 6.22,7.83 Sp F8V dist. 22.2 pc (72.42 l.y.)
 
 
Coord 2000
19598-0957
Discov num
HO  276
Comp
Coord arcsec 2000
19 59 47.49 -09 57 26.2
Date first
1961
Date last
2019
Obs
61
Pa first
136
Pa last
109
P.A. Now (θ)
123.3°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.23"
Mag pri
6.22
Mag sec
7.83
delta mag (ΔM)
1.61
Spectral class
F8V (yellow-white)
Pri motion ra
-276
Sec motion ra
Pri motion dec
-401
Sec motion dec
Notes
N O (See Notes, Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
109.2
Precise sep
0.239
Constellation
Aquila
SAO
163168
HIP
98416
Tycho2
5742-01060-1
HD
189340
HR
7637
GL
Gl 773.3
BD
BD-10 5238
Distance
22.2
Distance ly
72.42
last precise pa
109.2
last precise sep
0.239
 
 
ORBITAL ELEMENTS
 
 
Period (P)4.867y± 0.004 Periastron (T)2012.022y± 0.011 Semi-major axis (a)0.1514a± 0.0013
Eccentricity (e)0.605± 0.004 Inclination (i)18.8°± 2.7 Longitude of periastron (ω)319.4°± 2.2
Node (Ω)326.6°± 1.8 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.238 110.8
2001 0.202 136.1
2002 0.085 202.9
2003 0.139 50.7
2004 0.219 90.2
2005 0.237 113.9
2006 0.192 140.5
2007 0.066 233.4
2008 0.154 58.7
2009 0.224 93.6
2010 0.235 116.9
2011 0.180 145.4
2012 0.058 279.3
2013 0.167 65.3
2014 0.229 96.9
2015 0.231 120.0
2016 0.167 151.0
2017 0.065 325.5
2018 0.179 70.9
2019 0.233 100.1
2020 0.227 123.3
2021 0.152 157.7
2022 0.081 358.0
2023 0.190 75.9
2024 0.236 103.2
2025 0.222 126.6
2026 0.135 166.0
2027 0.098 19.6
2028 0.199 80.4
2029 0.237 106.3
2030 0.215 130.2

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






wds19598-0957e.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
19598-0957 HO 276 2006 46 166 0.1 6.22 7.83 F8V NOD 195947.49-095726.2
19598-0957 HO 276 2009 49 100 0.2 6.22 7.83 F8V NOD 195947.49-095726.2
19598-0957 HO 276 2014 51 114 0.2 6.22 7.83 F8V NO 195947.49-095726.2
19598-0957 HO 276 2015 54 135 0.2 6.22 7.83 F8V NO 195947.49-095726.2
19598-0957 HO 276 2017 59 63 0.2 6.22 7.83 F8V NO 195947.49-095726.2
19598-0957 HO 276 2018 60 87 0.2 6.22 7.83 F8V NO 195947.49-095726.2
19598-0957 HO 276 2019 61 109 0.2 6.22 7.83 F8V NO 195947.49-095726.2

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