02060-2209 SEE 16 (HD 12912)

02h 05m 59.35s -22° 09' 03.0" P.A. 109.00 sep 0.1 mag 8.88,9.30 Sp F5 dist. 116.14 pc (378.85 l.y.)

Coord 2000 02060-2209 Discov num SEE  16 Comp Coord arcsec 2000 02 05 59.35 -22 09 03.0
Date first 1897 Date last 2020 Obs 20
Pa first 36 Pa last 109.4 P.A. Now (θ) 109.4°
Sep first 0.5 Sep last 0.1 Sep. Now (ρ) 0.1"
Mag pri 8.88 Mag sec 9.30 delta mag (ΔM) 0.42 Spectral class F5 (yellow-white)
Pri motion ra +004 Sec motion ra
Pri motion dec +063 Sec motion dec
Notes O (Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 12912 Constellation Cetus HIP 9798 Tycho2 5858-00110-1
Gaia DR2 5124331291949164416 HD 12912 ADS 1665 BD BD-22 352
CD CD-22 705 CP CP-22 212 Distance 116.14 Distance ly 378.85




ORBITAL ELEMENTS

Period (P)228y Periastron (T)1971.9y Semi-major axis (a)0.404a
Eccentricity (e)0.585 Inclination (i)101.8° Longitude of periastron (ω)133.1°
Node (Ω)33.8° Notes ReferenceTok2019h
Equinox2000 Last observation2019 Grade4(1=Definitive, 9=Indet.)

label theta rho
2000 187.4 0.149
2001 185.4 0.144
2002 183.3 0.139
2003 181.0 0.134
2004 178.5 0.129
2005 175.8 0.124
2006 172.9 0.120
2007 169.8 0.115
2008 166.5 0.111
2009 162.9 0.107
2010 159.0 0.104
2011 155.0 0.101
2012 150.6 0.098
2013 146.1 0.096
2014 141.4 0.095
2015 136.6 0.094
2016 131.8 0.094
2017 127.0 0.094
2018 122.2 0.095
2019 117.6 0.097
2020 113.1 0.099
2021 108.9 0.102
2022 104.9 0.105
2023 101.1 0.109
2024 97.6 0.113
2025 94.4 0.117
2026 91.4 0.122
2027 88.6 0.127
2028 86.0 0.132
2029 83.7 0.137
2030 81.5 0.143


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



 
 


wds02060-2209a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic