04024-2832 DAW  79

 
 
04H 02M 21.85S -28 31' 51.1" P.A. 131.9 SEP 0.48 MAG 8.28,8.71 SP F8/G0V DIST. 61.39 PC (200.25 L.Y.)
 
 
Coord 2000
04024-2832
Discov num
DAW  79
Comp
Coord arcsec 2000
04 02 21.85 -28 31 51.1
Date first
1920
Date last
2013
Obs
37
Pa first
132
Pa last
317
P.A. Now (θ)
131.9°
Sep first
0.6
Sep last
0.4
Sep. Now (ρ)
0.48"
Mag pri
8.28
Mag sec
8.71
delta mag (ΔM)
0.43
Spectral class
F8/G0V (yellow-white)
Pri motion ra
-029
Sec motion ra
Pri motion dec
-036
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Eridanus
SAO
169052
HIP
18839
Tycho2
6461-01335-1
HD
25546
ADS
2952
CD
CD-28 1379
CP
CP-28 443
Distance
61.39
Distance ly
200.25
last precise pa
316.6
last precise sep
0.446
 
 
ORBITAL ELEMENTS
 
 
Period (P)97.138y Periastron (T)1999.55y Semi-major axis (a)0.454a
Eccentricity (e)0.703 Inclination (i)130.3° Longitude of periastron (ω)249.8°
Node (Ω)155.1° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.089 255.6
2001 0.104 215.5
2002 0.141 191.3
2003 0.182 177.6
2004 0.220 168.9
2005 0.254 162.6
2006 0.285 157.7
2007 0.313 153.8
2008 0.338 150.5
2009 0.360 147.6
2010 0.380 145.0
2011 0.399 142.7
2012 0.416 140.6
2013 0.431 138.6
2014 0.445 136.8
2015 0.458 135.1
2016 0.470 133.5
2017 0.481 131.9
2018 0.491 130.4
2019 0.500 129.0
2020 0.508 127.6
2021 0.515 126.2
2022 0.522 124.9
2023 0.528 123.7
2024 0.534 122.4
2025 0.538 121.2
2026 0.543 120.0
2027 0.547 118.8
2028 0.550 117.6
2029 0.553 116.5
2030 0.555 115.3

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