01535-0013 WAA 20 (Xi Psc)

 
 
01h 53m 32.87s -00° 12' 38.1" P.A. 220.00 sep 0.7 mag 18.80,18.80 Sp M1/2 dist. 54.91 pc (179.12 l.y.)
 
 
Coord 2000 01535-0013 Discov num WAA  20 Comp Coord arcsec 2000 01 53 32.87 -00 12 38.1
Date first 2001 Date last 2002 Obs 2
Pa first 220 Pa last 220 P.A. Now (θ) 220°
Sep first 0.7 Sep last 0.7 Sep. Now (ρ) 0.7"
Mag pri 18.80 Mag sec 18.80 delta mag (ΔM) 0 Spectral class M1/2 (red)
Pri motion ra +024 Sec motion ra
Pri motion dec -011 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Xi Psc Var name NSV654 Psc Constellation Cetus SAO 110206
HIP 8833 Tycho2 0033-01213-1 HD 11559 HR 549
GC 2293 BD BD+02 290 Bayer Xi Piscium Bayer name Xi Psc
FK5 65 Distance 54.91 Distance ly 179.12 Bayer greek ξ Psc
Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Psc vs Cet)
 
 
ORBITAL ELEMENTS
 
 
Period (P)1672.4d (4.58y) Periastron (T)37651.5d (1961.962y) Semi-major axis (a)13.1m± 1.66
Eccentricity (e)0.18 Inclination (i)65.85°± 12.24 Longitude of periastron (ω)71°
Node (Ω)270.13°± 17.03 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 98.2 0.014
2001-01-01 151.7 0.007
2002-01-01 250.4 0.011
2003-01-01 297.2 0.008
2004-01-01 80.0 0.012
2005-01-01 112.4 0.012
2006-01-01 206.6 0.007
2007-01-01 267.0 0.012
2008-01-01 22.0 0.005
2009-01-01 93.7 0.014
2010-01-01 136.6 0.008
2011-01-01 242.4 0.010
2012-01-01 285.5 0.010
2013-01-01 72.6 0.010
2014-01-01 106.5 0.013
2015-01-01 185.9 0.006
2016-01-01 261.2 0.012
2017-01-01 340.1 0.005
2018-01-01 89.0 0.013
2019-01-01 125.4 0.009
2020-01-01 232.1 0.009
2021-01-01 277.4 0.011
2022-01-01 61.8 0.008
2023-01-01 101.4 0.013
2024-01-01 164.4 0.006
2025-01-01 255.0 0.011
2026-01-01 309.4 0.006
2027-01-01 83.9 0.012
2028-01-01 117.0 0.011
2029-01-01 218.3 0.007
2030-01-01 270.9 0.012


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



 
 


wds01536%2B0311r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic