00576+5424 HLD   4

 
 
00H 57M 35.79S +54 23' 44.8" P.A. 50.8 SEP 0.43 MAG 9.00,9.50 SP G0
 
 
Coord 2000
00576+5424
Discov num
HLD   4
Comp
Coord arcsec 2000
00 57 35.79 +54 23 44.8
Date first
1881
Date last
2007
Obs
35
Pa first
125
Pa last
38
P.A. Now (θ)
50.8°
Sep first
1.0
Sep last
0.3
Sep. Now (ρ)
0.43"
Mag pri
9.00
Mag sec
9.50
delta mag (ΔM)
0.5
Spectral class
G0 (yellow)
Pri motion ra
+054
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cassiopeia
SAO
21874
Tycho2
3672-00063-1
HD
5502
ADS
795
last precise pa
38.3
last precise sep
0.307
 
 
ORBITAL ELEMENTS
 
 
Period (P)788.16y Periastron (T)1990.92y Semi-major axis (a)0.948a
Eccentricity (e)0.892 Inclination (i)13.3° Longitude of periastron (ω)191.7°
Node (Ω)90.1° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation1996
label rho theta
2000 0.201 16.0
2001 0.216 20.2
2002 0.230 23.8
2003 0.245 27.0
2004 0.259 29.9
2005 0.273 32.5
2006 0.287 34.8
2007 0.301 36.8
2008 0.314 38.8
2009 0.328 40.5
2010 0.341 42.1
2011 0.354 43.6
2012 0.366 45.0
2013 0.379 46.3
2014 0.391 47.5
2015 0.404 48.7
2016 0.416 49.8
2017 0.427 50.8
2018 0.439 51.7
2019 0.451 52.7
2020 0.462 53.5
2021 0.473 54.3
2022 0.484 55.1
2023 0.495 55.9
2024 0.506 56.6
2025 0.517 57.3
2026 0.528 58.0
2027 0.538 58.6
2028 0.548 59.2
2029 0.559 59.8
2030 0.569 60.4

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