01500-0408 A  2602

 
 
01H 50M 02.13S -04 07' 34.3" P.A. 181.4 SEP 0.83 MAG 10.40,10.40 SP K2+K2
 
 
Coord 2000
01500-0408
Discov num
A  2602
Comp
Coord arcsec 2000
01 50 02.13 -04 07 34.3
Date first
1913
Date last
2015
Obs
15
Pa first
338
Pa last
182
P.A. Now (θ)
181.4°
Sep first
0.3
Sep last
0.8
Sep. Now (ρ)
0.83"
Mag pri
10.40
Mag sec
10.40
delta mag (ΔM)
0
Spectral class
K2+K2 (yellow-orange/yellow-orange)
Pri motion ra
+018
Sec motion ra
Pri motion dec
-045
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
Tycho2
4688-01077-1
ADS
1458
last precise pa
181.9
last precise sep
0.81
 
 
ORBITAL ELEMENTS
 
 
Period (P)1606y± 150 Periastron (T)1976.2y± 0.2 Semi-major axis (a)2.455a± 0.15
Eccentricity (e)0.868± 0.008 Inclination (i)82.4°± 0.5 Longitude of periastron (ω)45.3°± 0.5
Node (Ω)4.5°± 0.5 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 0.463 177.6
2001 0.487 177.9
2002 0.512 178.3
2003 0.535 178.6
2004 0.559 178.9
2005 0.582 179.2
2006 0.605 179.4
2007 0.627 179.7
2008 0.649 179.9
2009 0.671 180.1
2010 0.692 180.3
2011 0.713 180.5
2012 0.734 180.6
2013 0.754 180.8
2014 0.775 181.0
2015 0.795 181.1
2016 0.814 181.2
2017 0.834 181.4
2018 0.853 181.5
2019 0.872 181.6
2020 0.890 181.7
2021 0.909 181.8
2022 0.927 181.9
2023 0.945 182.0
2024 0.963 182.1
2025 0.980 182.2
2026 0.997 182.3
2027 1.015 182.4
2028 1.032 182.5
2029 1.048 182.6
2030 1.065 182.7

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