23216-2018 HU 292 (HD 220145)

 
 
23h 21m 34.30s -20° 17' 43.5" P.A. 118.00 sep 0.4 mag 9.29,11.05 Sp G2V dist. 154.8 pc (504.96 l.y.)
 
 
Coord 2000 23216-2018 Discov num HU  292 Comp Coord arcsec 2000 23 21 34.30 -20 17 43.5
Date first 1900 Date last 2022 Obs 8
Pa first 37 Pa last 117.8 P.A. Now (θ) 120.8°
Sep first 0.4 Sep last 0.37 Sep. Now (ρ) 0.345"
Mag pri 9.29 Mag sec 11.05 delta mag (ΔM) 1.76 Spectral class G2V (yellow)
Pri motion ra +037 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 220145 Constellation Aquarius SAO 191844 HIP 115329
Tycho2 6402-01008-1 Gaia DR2 2392577266711704064 HD 220145 ADS 16694
BD BD-21 6409 Distance 154.8 Distance ly 504.96
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)1991.892y Semi-major axis (a)0.516a
Eccentricity (e)0.606 Inclination (i)126.4° Longitude of periastron (ω)227°
Node (Ω)101.7° Notes ReferenceTok2023a
Equinox2000 Last observation2022 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 186.9 0.137
2001 179.1 0.142
2002 172.0 0.149
2003 165.6 0.158
2004 159.9 0.168
2005 154.9 0.179
2006 150.4 0.190
2007 146.5 0.202
2008 143.0 0.214
2009 139.9 0.226
2010 137.1 0.239
2011 134.6 0.251
2012 132.3 0.263
2013 130.2 0.275
2014 128.3 0.287
2015 126.6 0.299
2016 125.0 0.311
2017 123.5 0.323
2018 122.1 0.334
2019 120.8 0.345
2020 119.5 0.356
2021 118.4 0.366
2022 117.3 0.377
2023 116.2 0.387
2024 115.3 0.397
2025 114.3 0.407
2026 113.4 0.416
2027 112.6 0.426
2028 111.8 0.435
2029 111.0 0.444
2030 110.2 0.452
2031 109.5 0.461
2032 108.8 0.469
2033 108.1 0.477
2034 107.5 0.485
2035 106.8 0.493
2036 106.2 0.500
2037 105.6 0.507
2038 105.1 0.515
2039 104.5 0.522
2040 104.0 0.528
2041 103.4 0.535
2042 102.9 0.542
2043 102.4 0.548
2044 101.9 0.554
2045 101.4 0.560
2046 100.9 0.566
2047 100.5 0.572
2048 100.0 0.577
2049 99.6 0.583
2050 99.1 0.588


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds23216-2018a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic