16271-1205 HU 158 (HD 148246)

 
 
16h 27m 06.46s -12° 05' 28.0" P.A. 168.00 sep 0.1 mag 9.50,9.70 Sp G0 dist. 172.41 pc (562.4 l.y.)
 
 
Coord 2000 16271-1205 Discov num HU  158 Comp Coord arcsec 2000 16 27 06.46 -12 05 28.0
Date first 1900 Date last 2022 Obs 17
Pa first 135 Pa last 168.2 P.A. Now (θ) 173.3°
Sep first 0.5 Sep last 0.119 Sep. Now (ρ) 0.102"
Mag pri 9.50 Mag sec 9.70 delta mag (ΔM) 0.2 Spectral class G0 (yellow)
Pri motion ra +025 Sec motion ra
Pri motion dec +027 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 148246 Constellation Ophiuchus SAO 159921 HIP 80576
Tycho2 5634-01345-1 Gaia DR2 4331512008788888832 HD 148246 ADS 10064
BD BD-11 4140 Distance 172.41 Distance ly 562.4
 
 
ORBITAL ELEMENTS
 
 
Period (P)260.3y± 52.3 Periastron (T)2001.6y± 2.4 Semi-major axis (a)0.306a± 0.034
Eccentricity (e)0.717± 0.053 Inclination (i)108.7°± 2.5 Longitude of periastron (ω)181.7°± 5.2
Node (Ω)137°± 2.7 Notes ReferenceTok2022g
Equinox2000 Last observation2022 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 322.7 0.085
2001 318.8 0.087
2002 314.9 0.086
2003 310.9 0.084
2004 306.7 0.080
2005 301.9 0.075
2006 296.4 0.070
2007 289.8 0.063
2008 281.8 0.057
2009 272.1 0.052
2010 260.3 0.048
2011 246.9 0.046
2012 233.0 0.046
2013 219.8 0.048
2014 208.4 0.053
2015 199.1 0.059
2016 191.7 0.066
2017 185.8 0.074
2018 181.0 0.082
2019 177.1 0.090
2020 173.8 0.099
2021 171.1 0.108
2022 168.8 0.116
2023 166.8 0.125
2024 165.1 0.134
2025 163.6 0.142
2026 162.2 0.150
2027 161.0 0.159
2028 159.9 0.167
2029 158.9 0.175
2030 158.0 0.183
2031 157.2 0.191
2032 156.4 0.199
2033 155.7 0.206
2034 155.1 0.214
2035 154.5 0.221
2036 153.9 0.228
2037 153.4 0.235
2038 152.8 0.242
2039 152.4 0.249
2040 151.9 0.256
2041 151.5 0.263
2042 151.1 0.269
2043 150.7 0.276
2044 150.3 0.282
2045 150.0 0.288
2046 149.6 0.294
2047 149.3 0.300
2048 149.0 0.306
2049 148.7 0.312
2050 148.4 0.318


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds16271-1205a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic