22180-6249 I    20

 
 
22h 18m 02.09s -62 48' 40.8" P.A. 185.9 sep 0.67 mag 7.36,8.42 Sp F5V dist. 121.8 pc (397.31 l.y.)
 
 
Coord 2000
22180-6249
Discov num
I    20
Comp
Coord arcsec 2000
22 18 02.09 -62 48 40.8
Date first
1894
Date last
2016
Obs
37
Pa first
320
Pa last
188
P.A. Now (θ)
185.9°
Sep first
0.6
Sep last
0.7
Sep. Now (ρ)
0.67"
Mag pri
7.36
Mag sec
8.42
delta mag (ΔM)
1.06
Spectral class
F5V (yellow-white)
Pri motion ra
+001
Sec motion ra
+001
Pri motion dec
-003
Sec motion dec
-003
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
187.5
Precise sep
0.65
Constellation
Tucana
SAO
255187
HIP
110088
Tycho2
9120-00218-1
HD
211299
CP
CP-63 4769
Distance
121.8
Distance ly
397.31
last precise pa
187.5
last precise sep
0.65
 
 
ORBITAL ELEMENTS
 
 
Period (P)982.79y± 479.6 Periastron (T)2948.63y± 16.3 Semi-major axis (a)1.157a± 0.325
Eccentricity (e)0.526± 0.258 Inclination (i)123°± 4.5 Longitude of periastron (ω)115.2°± 17.5
Node (Ω)4.2°± 0.8 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1996
label rho theta
2000 0.580 195.8
2001 0.586 195.1
2002 0.592 194.5
2003 0.598 193.8
2004 0.604 193.2
2005 0.609 192.6
2006 0.615 192.0
2007 0.620 191.4
2008 0.625 190.8
2009 0.630 190.2
2010 0.636 189.7
2011 0.641 189.1
2012 0.646 188.5
2013 0.650 188.0
2014 0.655 187.5
2015 0.660 186.9
2016 0.664 186.4
2017 0.669 185.9
2018 0.673 185.4
2019 0.678 184.9
2020 0.682 184.4
2021 0.686 183.9
2022 0.690 183.5
2023 0.694 183.0
2024 0.698 182.5
2025 0.702 182.1
2026 0.705 181.6
2027 0.709 181.1
2028 0.713 180.7
2029 0.716 180.2
2030 0.719 179.8

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

grafico orbita





wds22180-6249b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
22180-6249 I 20 1996 32 198 0.6 7.36 8.42 F5V NOD 221802.09-624840.8
22180-6249 I 20 2008 33 189 0.6 7.36 8.42 F5V NOD 221802.09-624840.8
22180-6249 I 20 2010 35 188 0.6 7.36 8.42 F5V NOD 221802.09-624840.8
22180-6249 I 20 2016 37 188 0.7 7.36 8.42 F5V NO 221802.09-624840.8

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