16128+3922 STF 2028 (HD 146100)

 
 
16h 12m 48.11s +39° 21' 35.6" P.A. 147.00 sep 0.5 mag 9.88,9.14 Sp G0 dist. 67.2 pc (219.21 l.y.)
 
 
Coord 2000 16128+3922 Discov num STF2028 Comp Coord arcsec 2000 16 12 48.11 +39 21 35.6
Date first 1906 Date last 2016 Obs 60
Pa first 147 Pa last 146.5 P.A. Now (θ) 147.5°
Sep first 0.5 Sep last 0.491 Sep. Now (ρ) 0.528"
Mag pri 9.88 Mag sec 9.14 delta mag (ΔM) 0.74 Spectral class G0 (yellow)
Pri motion ra -256 Sec motion ra
Pri motion dec +279 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 146100 Constellation Corona Borealis SAO 65149 HIP 79448
Tycho2 3061-01469-1 HD 146100 GC 21827 ADS 9970
BD BD+39 2963 Distance 67.2 Distance ly 219.21
 
 
ORBITAL ELEMENTS
 
 
Period (P)105.34y Periastron (T)1993.38y Semi-major axis (a)0.399a
Eccentricity (e)0.616 Inclination (i)83.6° Longitude of periastron (ω)223.7°
Node (Ω)145.5° Notesn ReferenceHrt2014b
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 138.0 0.156
2001 139.6 0.191
2002 140.8 0.223
2003 141.6 0.252
2004 142.3 0.279
2005 142.9 0.305
2006 143.3 0.328
2007 143.7 0.350
2008 144.1 0.370
2009 144.5 0.388
2010 144.8 0.405
2011 145.0 0.421
2012 145.3 0.435
2013 145.5 0.449
2014 145.8 0.461
2015 146.0 0.472
2016 146.2 0.482
2017 146.4 0.491
2018 146.6 0.499
2019 146.8 0.506
2020 147.0 0.513
2021 147.1 0.519
2022 147.3 0.524
2023 147.5 0.528
2024 147.7 0.531
2025 147.8 0.534
2026 148.0 0.537
2027 148.2 0.538
2028 148.3 0.539
2029 148.5 0.539
2030 148.7 0.539


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



 
 


wds16128%2B3922a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic