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Doubles in session


Current system
22553-4828
I 22 AB


Nearby doubles
21' : 22573-4826
KPP 844

61' : 22496-4805
RST1148

62' : 23009-4856
UC 4868

81' : 23008-4927
SKF1183

85' : 22468-4819
I 304

89' : 22579-4704
HDS3267AB

96' : 22461-4858
FMR 175

97' : 22569-4653
CPO 96

100' : 22568-5006
RST1151

100' : 22453-4831
RST1142

101' : 22547-4647
RST3310

106' : 22447-4818
UC 4805

108' : 22519-4647
I 683

108' : 23032-4715
TOK 681AB

109' : 22503-4652
UC 4830

116' : 22440-4759
I 1458

119' : 23064-4747
HU 1547

126' : 22429-4855
KPP3085

126' : 22467-4656
HJ 5362

128' : 22475-5011
RST1146

128' : 23000-4630
RST3314

129' : 23036-4651
WSI 139

130' : 22445-4943
TDT3684

136' : 23083-4751
B 591

143' : 23053-4649
LDS6389

147' : 23087-4730
UC 4893



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

22553-4828 I 22 AB

 
 
22h 55m 16.15s -48° 27' 56.6" P.A. 178.00 sep 0.6 mag 7.29,8.91 Sp G3/6 dist. 47.69 pc (155.56 l.y.)
 
 
Coord 2000 22553-4828 Discov num I    22 Comp AB Coord arcsec 2000 22 55 16.15 -48 27 56.6
Date first 1894 Date last 2017 Obs 45
Pa first 200 Pa last 177.5 P.A. Now (θ) 177.5°
Sep first 0.6 Sep last 0.56 Sep. Now (ρ) 0.56"
Mag pri 7.29 Mag sec 8.91 delta mag (ΔM) 1.62 Spectral class G3/6 (yellow)
Pri motion ra -224 Sec motion ra -224
Pri motion dec +058 Sec motion dec +058
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
22553-4828 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 231354 22 55 16 -48 27 57 I 22 AB 2017 45 178 0.6 7.29 8.91 1.62 Y <===
Show Tau2 Gru 231354 22 55 16 -48 27 57 I 22 AB,CD 2017 25 181 93.9 7.14 6.71 0.43
Show 231353 22 55 16 -48 29 30 B 2506 CD 1964 5 267 0.1 7.30 7.50 0.20
Quadruple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Grus SAO 231354 HIP 113191 Tycho2 8450-01347-1
Gaia DR2 6515008644030385792 HD 216555 GC 31953 CD CD-4913996
CP CP-4911675 Bayer Tau 2 Gruis Bayer name Tau2 Gru Distance 47.69
Distance ly 155.56 Bayer greek τ2 Gru
 
 
ORBITAL ELEMENTS
 
 
Period (P)198.04y Periastron (T)2001.69y Semi-major axis (a)0.965a
Eccentricity (e)0.763 Inclination (i)87.3° Longitude of periastron (ω)256.7°
Node (Ω)175° Notesn ReferenceZir2012c
Equinox2000 Last observation2009 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 357.5 0.180
2001 0.1 0.108
2002 16.5 0.029
2003 163.7 0.056
2004 170.5 0.134
2005 172.3 0.206
2006 173.3 0.271
2007 173.8 0.328
2008 174.3 0.378
2009 174.6 0.423
2010 174.8 0.464
2011 175.1 0.500
2012 175.3 0.532
2013 175.4 0.561
2014 175.6 0.587
2015 175.7 0.611
2016 175.9 0.633
2017 176.0 0.653
2018 176.1 0.671
2019 176.2 0.688
2020 176.3 0.703
2021 176.4 0.716
2022 176.5 0.729
2023 176.6 0.740
2024 176.7 0.750
2025 176.8 0.760
2026 176.9 0.768
2027 177.0 0.776
2028 177.1 0.783
2029 177.1 0.789
2030 177.2 0.794


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


 
  


wds22553-4828a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 22553-4828 I 22 AB : NOTES
 
 
discov_num notes refcode
I 22 AB: Direct motion, with nearly a complete revolution. B__1956a
AB,CD: SHY 362. Bayesian analysis by Shaya & Olling (2011) indicates Shy2011
very high (near 100%) probability pair is physical.
B 2506 CD: Direct motion.
 
 
REFERENCES
 
 
refcode metd author reference
B__1956a Ma - van den Bos, W.H. 1956CiUO..115..266V
B__1956a +J Union Obs. Johannesburg Circ. 115, 266, 1956
Shy2011 - Shaya, E.J. & Olling, R. 2011ApJS..192....2S
Shy2011 ApJS 192, 2, 2011
Shy2011 (Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011 added to WDS only if probability 90% or greater.)
Zir2012c orb - Zirm, H. 2012IAUDS.178....1Z
Zir2012c Inf. Circ. 178, 1, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
212 I Innes, R.T.A.
216 I MNRAS 57, 533, 1897 (data also in I__1897b,
216 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
22553-4828 I 22 AB 1994 35 173 0.4 7.29 8.91 G3/6 N D 225516.15-482756.6
22553-4828 I 22 AB 2008 38 175 0.4 7.29 8.91 G3/6 N D 225516.15-482756.6
22553-4828 I 22 AB 2009 41 175 0.4 7.29 8.91 G3/6 N D 225516.15-482756.6
22553-4828 I 22 AB 2013 42 175 0.6 7.29 8.91 G3/6 NO 225516.15-482756.6
22553-4828 I 22 AB 2015 43 177 0.6 7.29 8.91 G3/6 NO 225516.15-482756.6
22553-4828 I 22 AB 2017 44 177 0.6 7.29 8.91 G3/6 NO 225516.15-482756.6

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 22553-4828 I 22 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 22553-4828 I 22 AB : MEASURES
 
 
No records found.

 
 
WDS 22553-4828 : VIRTUAL EYEPIECE
 
 

22553-4828 I 22A mag 7.29 Sp G3/6 22553-4828 I 22B sep 0.6 P.A. 178.30 mag 8.91 22553-4828 B 2506C sep 93.7 P.A. 180.90 mag 7.3 Sp F6/8V: 22553-4828 B 2506D sep 93.7 P.A. 181.00 mag 7.5 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 22553-4828 : ALADIN DSS IMAGE @ 22h 55m 16.15s -48° 27' 56.6"
 
 
 
 
WDS 22553-4828 I 22 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

22553-4828 I 22AB distance=0' 22553-4828 B 2506CD distance=2' 22573-4826 KPP 844 distance=21' 22595-4905 I 1461BD distance=56' 22496-4805 RST1148 distance=61' 23009-4856 UC 4868 distance=62' 23008-4927 SKF1183 distance=81' 22468-4819 I 304 distance=85' 22579-4704 HDS3267AB distance=89' 22461-4858 FMR 175 distance=96' 22569-4653 CPO 96 distance=97' 22568-5006 RST1151 distance=100' 22453-4831 RST1142 distance=100' 22547-4647 RST3310 distance=101' 22447-4818 UC 4805 distance=106' 22519-4647 I 683 distance=108' 23032-4715 TOK 681AB distance=108' 23032-4715 TOK 681BC distance=108' 22503-4652 UC 4830 distance=109' 22440-4759 I 1458 distance=116' 23064-4747 HU 1547 distance=119' 22429-4855 KPP3085 distance=126' 22467-4656 HJ 5362 distance=126' 22475-5011 RST1146 distance=128' 23000-4630 RST3314 distance=128' 23036-4651 WSI 139 distance=129' 22445-4943 TDT3684 distance=130' 23083-4751 B 591 distance=136' 23053-4649 LDS6389 distance=143' 23087-4730 UC 4893 distance=147' 22415-4738 UC 4793 distance=148' 22510-5049 RST5488 distance=148' 22426-4713 COO 252AB distance=148' 22426-4713 COO 252AC distance=148' 22581-4601 SKF1181 distance=151' 23100-4921 UC 4898 distance=155' 22501-4559 NSN 460 distance=159' 22403-4931 BRG 33 distance=161' 22576-5107 RST5489 distance=161' 23025-4605 I 1462 distance=161' 22556-5110 UC 4848 distance=163' 23040-4610 COO 254 distance=164' 22393-4737 HJ 5351AB distance=168' 22393-4737 HJ 5351AC distance=168' 22558-5120 TSN 40 distance=173' 22595-5119 KPP2493 distance=177' 23072-5041 DUN 246 distance=177' 22375-4842 UC 4781 distance=178' 23008-4538 UC 4865 distance=180' 23104-4653 CPO 97 distance=180' 22586-4531 HU 1335 distance=181' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 22553-4828 I 22 AB 178 0.6
Show 22553-4828 I 22 AB,CD 181 93.9
Show 22553-4828 B 2506 CD 267 0.1 2
Show 22573-4826 KPP 844 163 7.2 21
Show 22595-4905 I 1461 BD 253 2.3 56
Show 22496-4805 RST1148 329 1.8 61
Show 23009-4856 UC 4868 206 66.1 62
Show 23008-4927 SKF1183 109 11.9 81
Show 22468-4819 I 304 2 4.2 85
Show 22579-4704 HDS3267 AB 190 0.6 89
Show 22461-4858 FMR 175 295 50.7 96
Show 22569-4653 CPO 96 92 62.3 97
Show 22568-5006 RST1151 76 1.4 100
Show 22453-4831 RST1142 255 1.7 100
Show 22547-4647 RST3310 116 1.2 101
Show 22447-4818 UC 4805 191 40.5 106
Show 22519-4647 I 683 352 1.9 108
Show 23032-4715 TOK 681 AB 322 6.4 108
Show 23032-4715 TOK 681 BC 260 0.9 108
Show 22503-4652 UC 4830 62 13.2 109
Show 22440-4759 I 1458 100 1.3 116
Show 23064-4747 HU 1547 155 2.8 119
Show 22429-4855 KPP3085 334 4.6 126
Show 22467-4656 HJ 5362 141 10.4 126
Show 22475-5011 RST1146 240 1.4 128
Show 23000-4630 RST3314 292 3.7 128
Show 23036-4651 WSI 139 156 0.3 129
Show 22445-4943 TDT3684 238 1.0 130
Show 23083-4751 B 591 253 1.5 136
Show 23053-4649 LDS6389 4 56.9 143
Show 23087-4730 UC 4893 247 15.0 147
Show 22415-4738 UC 4793 58 65.1 148
Show 22510-5049 RST5488 117 0.1 148
Show 22426-4713 COO 252 AB 125 7.1 148
Show 22426-4713 COO 252 AC 211 45.3 148
Show 22581-4601 SKF1181 117 68.7 151
Show 23100-4921 UC 4898 308 51.5 155
Show 22501-4559 NSN 460 41 1.2 159
Show 22403-4931 BRG 33 43 3.7 161
Show 22576-5107 RST5489 76 1.7 161
Show 23025-4605 I 1462 288 0.1 161
Show 22556-5110 UC 4848 51 10.1 163
Show 23040-4610 COO 254 106 3.3 164
Show 22393-4737 HJ 5351 AB 233 7.3 168
Show 22393-4737 HJ 5351 AC 332 7.9 168
Show 22558-5120 TSN 40 359 17.3 173
Show 22595-5119 KPP2493 255 22.3 177
Show 23072-5041 DUN 246 254 8.9 177
Show 22375-4842 UC 4781 161 17.5 178
Show 23008-4538 UC 4865 112 26.5 180
Show 23104-4653 CPO 97 135 4.1 180

 
 
WDS 22553-4828 : COMPONENTS
 
 
  A B C
B pa=178.3°
sep=0.56"
 
C pa=180.9°
sep=93.71"
pa=180.9°
sep=93.15"
 
D pa=181.0°
sep=93.72"
pa=181.0°
sep=93.16"
pa=265.2°
sep=0.07"
 
 
22553-4828 A
 
 
Coord arcsec 2000 225516.15-482756.6 Mag 7.29 Spectral class G3/6 (yellow) PmRA -224.00
PmDE 58.0 SAO 231354 HIP 113191 Tycho2 8450-01347-1
HD 216655 GC 31953 CD CD-4913996 CP CP-4911675
Bayer Tau 2 Bayer name Tau2
Tycho2
Tycho2 8450-01347-1 Pflag RAmdeg 343.81727678 DEmdeg -48.46574976
PmRA -224.1 PmDE 57.9 E RAmdeg 4 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.50 EpDEm 1991.03
Num 13 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.2 BTmag 7.767 E BTmag 0.016 VTmag 7.140
E VTmag 0.010 Prox 936 TYC T HIP 113191
CCDM AB RAdeg 343.81803861 DEdeg -48.46588500 EpRA 1990 1.88
EpDE 1990 1.60 E RAdeg 4.1 E DEdeg 5.0 Posflg P
Corr 0.0
SAO
SAO 231354 DelFlag RA1950 PmRA1950 -0.0231
DE1950 PmDE1950 0.062 Vmag 7 SpType G0
Double code Source 70 CatNum 31953 DM CD-4913996
DMcomp BDsup HD 216655 M HD 0
GC 31953 RA1950rad 5.988073 DE1950rad -0.85055882 PmRA2000 -0.023
PmDE2000 0.056
Hipparcos
Catalog H HIP 113191 Proxy H RAhms 22 55 16.35
DEdms -48 27 57.4 Vmag 7.04 VarFlag R Vmag G
RAdeg 343.818 DEdeg -48.4659 AstroRef B Plx 21.58
CCDM 22553-4829 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP BA
Theta 354 Rho 0.455 HD 216655 BD
CD CD-4913996 CP CP-4911675 Dm number -4913996 VIred 0.64
SpType G5 R SpType Coord arcsec 2000 225516.35-482757.4
Hipparcos 2
HIP 113191 Sn 15 So 3 Nc 2
RArad 6.0007580169 DErad -0.8458903406 Plx 20.97 PmRA -227.04
PmDE 62.29 E RArad 0.58 E DErad 0.71 E Plx 0.84
E pmRA 0.69 E pmDE 0.82 Hpmag 7.1512 E Hpmag 0.001
SHp 0.009 VA 0 BV 0.56 E BV 0.007
VI 0.64
 
 
22553-4828 B
 
 
Coord arcsec 2000 225516.15-482757.2 Mag 8.91 PmRA -224.00 PmDE 58.0
Calc delta mag 1.62 Calc coord yes
 
 
22553-4828 C
 
 
Coord arcsec 2000 225516.00-482930.3 Mag 7.3 Spectral class F6/8V: (yellow-white) PmRA -227.00
PmDE 56.0 SAO 231353 HIP 113190 Tycho2 8450-01201-1
HD 216656 GC 31952 CD CD-4913997 CP CP-4911676
Calc delta mag 0.01
Tycho2
Tycho2 8450-01201-1 Pflag RAmdeg 343.81664845 DEmdeg -48.49175339
PmRA -226.5 PmDE 55.5 E RAmdeg 4 E DEmdeg 4
E pmRA 0.8 E pmDE 0.8 EpRAm 1991.46 EpDEm 1991.12
Num 15 Q RAmdeg 1.8 Q DEmdeg 1.8 Q pmRA 1.9
Q pmDE 1.9 BTmag 7.209 E BTmag 0.015 VTmag 6.709
E VTmag 0.010 Prox 936 TYC T HIP 113190
CCDM RAdeg 343.81741111 DEdeg -48.49188278 EpRA 1990 1.96
EpDE 1990 1.61 E RAdeg 3.8 E DEdeg 4.3 Posflg
Corr 0.0
SAO
SAO 231353 DelFlag RA1950 PmRA1950 -0.0221
DE1950 PmDE1950 0.058 Vmag 6.7 SpType F5
Double code Source 70 CatNum 31952 DM CD-4913997
DMcomp BDsup HD 216656 M HD 0
GC 31952 RA1950rad 5.9880645 DE1950rad -0.85101286 PmRA2000 -0.022
PmDE2000 0.052
Hipparcos
Catalog H HIP 113190 Proxy RAhms 22 55 16.19
DEdms -48 29 30.8 Vmag 6.67 VarFlag R Vmag G
RAdeg 343.817 DEdeg -48.4919 AstroRef Plx 21.47
CCDM 22553-4829 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 216656 BD
CD CD-4913997 CP CP-4911676 Dm number -4913997 VIred 0.53
SpType F7V: R SpType Coord arcsec 2000 225516.19-482930.8
Hipparcos 2
HIP 113190 Sn 5 So 0 Nc 1
RArad 6.0007469568 DErad -0.8463430753 Plx 22.45 PmRA -225.09
PmDE 55.25 E RArad 0.37 E DErad 0.3 E Plx 0.47
E pmRA 0.44 E pmDE 0.35 Hpmag 6.767 E Hpmag 0.001
SHp 0.01 VA 0 BV 0.458 E BV 0.011
VI 0.53
 
 
22553-4828 D
 
 
Coord arcsec 2000 225515.99-482930.3 Mag 7.5 PmRA -227.00 PmDE 56.0
Calc delta mag 0.21 Calc coord yes