23587-0333 BU  730 (27 Psc)

 
 
23h 58m 40.41s -03 33' 20.9" P.A. 330.7 sep 0.86 mag 4.90,8.90 Sp G9III dist. 71.89 pc (234.51 l.y.)
 
 
Coord 2000
23587-0333
Discov num
BU  730
Comp
Coord arcsec 2000
23 58 40.41 -03 33 20.9
Date first
1878
Date last
2012
Obs
30
Pa first
265
Pa last
325
P.A. Now (θ)
330.7°
Sep first
1.4
Sep last
0.8
Sep. Now (ρ)
0.86"
Mag pri
4.90
Mag sec
8.90
delta mag (ΔM)
4
Spectral class
G9III (yellow)
Pri motion ra
-051
Sec motion ra
Pri motion dec
-072
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
324.6
Precise sep
0.753
Name
27 Psc
Constellation
Pisces
SAO
147008
HIP
118209
HD
224533
HR
9067
GC
-32288
ADS
17137
Flamsteed
27 Piscium
Flamsteed name
27 Psc
Distance
71.89
Distance ly
234.51
last precise pa
324.6
last precise sep
0.753
 
 
ORBITAL ELEMENTS
 
 
Period (P)695y Periastron (T)2550y Semi-major axis (a)3.67a
Eccentricity (e)0.766 Inclination (i)81° Longitude of periastron (ω)109.6°
Node (Ω)81.1° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1997
label rho theta
2000 0.936 314.8
2001 0.930 315.6
2002 0.925 316.4
2003 0.919 317.3
2004 0.914 318.1
2005 0.909 318.9
2006 0.904 319.8
2007 0.899 320.6
2008 0.894 321.5
2009 0.890 322.4
2010 0.885 323.3
2011 0.881 324.2
2012 0.877 325.1
2013 0.874 326.0
2014 0.870 326.9
2015 0.867 327.9
2016 0.864 328.8
2017 0.861 329.8
2018 0.858 330.7
2019 0.855 331.7
2020 0.853 332.6
2021 0.851 333.6
2022 0.849 334.6
2023 0.848 335.5
2024 0.846 336.5
2025 0.845 337.5
2026 0.844 338.5
2027 0.843 339.5
2028 0.843 340.4
2029 0.843 341.4
2030 0.843 342.4

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

grafico orbita





wds23587-0333a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
23587-0333 BU 730 1997 24 311 0.9 4.90 8.90 G9III O 235840.41-033320.9
23587-0333 BU 730 2008 26 323 0.8 4.90 8.90 G9III O 235840.41-033320.9
23587-0333 BU 730 2009 28 322 0.8 4.90 8.90 G9III NOD 235840.41-033320.9
23587-0333 BU 730 2012 29 326 0.8 4.90 8.90 G9III NOD 235840.41-033320.9

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