00373-2446 BU  395

 
 
00H 37M 20.68S -24 46' 02.1" P.A. 115.4 SEP 0.69 MAG 6.60,6.20 SP G8V DIST. 15.4 PC (50.23 L.Y.)
 
 
Coord 2000
00373-2446
Discov num
BU  395
Comp
Coord arcsec 2000
00 37 20.68 -24 46 02.1
Date first
1875
Date last
2015
Obs
187
Pa first
315
Pa last
113
P.A. Now (θ)
115.4°
Sep first
0.5
Sep last
0.8
Sep. Now (ρ)
0.69"
Mag pri
6.60
Mag sec
6.20
delta mag (ΔM)
0.4
Spectral class
G8V (yellow)
Pri motion ra
+140
Sec motion ra
+140
Pri motion dec
-001
Sec motion dec
-001
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
SAO
166418
HIP
2941
Tycho2
6421-01924-1
HD
3443
HR
159
ADS
520
GL
Gl 25A
CD
CD-25 225
CP
CP-25 64
Distance
15.4
Distance ly
50.23
last precise pa
112.8
last precise sep
0.757
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.02y Periastron (T)1998.78y Semi-major axis (a)0.675a
Eccentricity (e)0.218 Inclination (i)78.6° Longitude of periastron (ω)318.1°
Node (Ω)291.98° Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.523 289.1
2001 0.558 293.4
2002 0.536 297.5
2003 0.468 302.5
2004 0.369 309.7
2005 0.256 323.1
2006 0.163 354.7
2007 0.168 47.9
2008 0.265 77.5
2009 0.383 90.0
2010 0.496 96.7
2011 0.596 100.9
2012 0.677 104.1
2013 0.737 106.6
2014 0.771 108.8
2015 0.776 110.9
2016 0.751 113.0
2017 0.694 115.4
2018 0.602 118.4
2019 0.478 122.8
2020 0.326 130.8
2021 0.165 154.6
2022 0.132 237.3
2023 0.280 273.0
2024 0.425 283.4
2025 0.522 289.0
2026 0.558 293.3
2027 0.537 297.4
2028 0.470 302.4
2029 0.371 309.6
2030 0.258 322.7

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic