02456-7114 HDS 357 (HD 17653)

 
 
02h 45m 36.86s -71° 14' 09.4" P.A. 17.00 sep 0.4 mag 6.79,10.56 Sp F6V dist. 60.06 pc (195.92 l.y.)
 
 
Coord 2000 02456-7114 Discov num HDS 357 Comp Coord arcsec 2000 02 45 36.86 -71 14 09.4
Date first 1991 Date last 2021 Obs 12
Pa first 132 Pa last 16.6 P.A. Now (θ) 16.6°
Sep first 0.5 Sep last 0.425 Sep. Now (ρ) 0.425"
Mag pri 6.79 Mag sec 10.56 delta mag (ΔM) 3.77 Spectral class F6V (yellow-white)
Pri motion ra +064 Sec motion ra
Pri motion dec +003 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 17653 Constellation Hydrus SAO 255919 HIP 12884
Tycho2 9148-01833-1 Gaia DR2 4644328667526505600 HD 17653 GC 3360
CP CP-71 165 Distance 60.06 Distance ly 195.92
 
 
ORBITAL ELEMENTS
 
 
Period (P)78.7y Periastron (T)2041.99y Semi-major axis (a)0.545a
Eccentricity (e)0.401 Inclination (i)116.1° Longitude of periastron (ω)256.6°
Node (Ω)160.8° Notesn ReferenceHrt2011d
Equinox2000 Last observation2010 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 108.9 0.402
2001 105.4 0.390
2002 101.7 0.379
2003 97.8 0.368
2004 93.6 0.358
2005 89.3 0.349
2006 84.7 0.342
2007 79.9 0.336
2008 75.0 0.332
2009 70.0 0.330
2010 64.9 0.329
2011 59.9 0.330
2012 54.9 0.332
2013 50.0 0.337
2014 45.2 0.342
2015 40.7 0.349
2016 36.3 0.358
2017 32.1 0.367
2018 28.1 0.377
2019 24.4 0.387
2020 20.8 0.397
2021 17.4 0.408
2022 14.2 0.418
2023 11.2 0.428
2024 8.2 0.437
2025 5.4 0.445
2026 2.7 0.452
2027 0.457
2028 357.4 0.460
2029 354.9 0.462
2030 352.3 0.460


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



 
 


wds02456-7114a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic