01218-2408 SEE  13

 
 
01H 21M 46.64S -24 07' 41.0" P.A. 176.1 SEP 1.31 MAG 8.89,9.29 SP G1V DIST. 86.06 PC (280.73 L.Y.)
 
 
Coord 2000
01218-2408
Discov num
SEE  13
Comp
Coord arcsec 2000
01 21 46.64 -24 07 41.0
Date first
1897
Date last
2008
Obs
30
Pa first
126
Pa last
175
P.A. Now (θ)
176.1°
Sep first
0.2
Sep last
1.2
Sep. Now (ρ)
1.31"
Mag pri
8.89
Mag sec
9.29
delta mag (ΔM)
0.4
Spectral class
G1V (yellow)
Pri motion ra
+073
Sec motion ra
+073
Pri motion dec
+027
Sec motion dec
+027
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
SAO
166988
HIP
6367
Tycho2
6425-01613-1
HD
8281
ADS
1102
CD
CD-24 588
CP
CP-24 155
Distance
86.06
Distance ly
280.73
last precise pa
175.4
last precise sep
1.229
 
 
ORBITAL ELEMENTS
 
 
Period (P)1530.34y Periastron (T)1846.51y Semi-major axis (a)2.021a
Eccentricity (e)0.9 Inclination (i)67.2° Longitude of periastron (ω)148.1°
Node (Ω)207° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 1.197 174.4
2001 1.204 174.5
2002 1.211 174.6
2003 1.218 174.7
2004 1.225 174.8
2005 1.232 174.9
2006 1.239 175.0
2007 1.246 175.2
2008 1.253 175.3
2009 1.260 175.4
2010 1.267 175.5
2011 1.273 175.6
2012 1.280 175.7
2013 1.287 175.8
2014 1.294 175.9
2015 1.301 176.0
2016 1.308 176.0
2017 1.314 176.1
2018 1.321 176.2
2019 1.328 176.3
2020 1.335 176.4
2021 1.341 176.5
2022 1.348 176.6
2023 1.355 176.7
2024 1.361 176.8
2025 1.368 176.9
2026 1.375 177.0
2027 1.381 177.0
2028 1.388 177.1
2029 1.394 177.2
2030 1.401 177.3

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