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Doubles in session


Current system
23218-1217
HU 95
HD 220188


Nearby doubles
30' : 23237-1218
LDS2984

39' : 23195-1234
BRT2803

42' : 23228-1138
J 1422

44' : 23224-1259
HJ 310

59' : 23256-1156
SHN 44

73' : 23211-1327
LDS5073

76' : 23263-1138
HJ 3193

77' : 23167-1158
BRT2801

78' : 23188-1113
GWP3277

82' : 23191-1328
STF2998AB

84' : 23214-1340
HDS3326AB

90' : 23220-1345
GWP3284

90' : 23157-1221
LDS2977

91' : 23247-1056
ALD 80

99' : 23226-1353
RST4125

104' : 23184-1346
GWP3272

104' : 23206-1359
NSN 785

105' : 23175-1339
WIS 380

113' : 23168-1051
UC 4915AB

118' : 23171-1349
BU 182AB

119' : 23299-1223
SKF 126

120' : 23139-1241
GWP3257

124' : 23289-1108
LDS6034

129' : 23170-1404
BRT2802

132' : 23287-1052
TOI 291

133' : 23306-1146
UC 4969



Selections
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Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

23218-1217 HU 95 (HD 220188)

 
 
23h 21m 50.70s -12° 16' 04.7" P.A. 269.00 sep 0.5 mag 10.26,11.40 Sp G6/K1V dist. 83.19 pc (271.37 l.y.)
 
 
Coord 2000 23218-1217 Discov num HU   95 Comp Coord arcsec 2000 23 21 50.70 -12 16 04.7
Date first 1899 Date last 2022 Obs 25
Pa first 221 Pa last 268.7 P.A. Now (θ) 264.6° (calc)
Sep first 0.5 Sep last 0.504 Sep. Now (ρ) 0.507" (calc)
Mag pri 10.26 Mag sec 11.40 delta mag (ΔM) 1.14 Spectral class G6/K1V (yellow)
Pri motion ra +032 Sec motion ra
Pri motion dec -009 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 220188 Constellation Aquarius HIP 115346 Tycho2 5825-01149-1
Gaia DR2 2412452863529239296 HD 220188 ADS 16700 BD BD-13 6390
Distance 83.19 Distance ly 271.37
 
 
ORBITAL ELEMENTS
 
 
Period (P)161.73y± 6 Periastron (T)1943.3y± 1.33 Semi-major axis (a)0.4a± 0.016
Eccentricity (e)0.371± 0.021 Inclination (i)155.6°± 7 Longitude of periastron (ω)290.7°± 9.2
Node (Ω)19.3°± 12 Notesn ReferenceTok2023a
Equinox2000 Last observation2022 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 297.1 0.468
2001 295.7 0.471
2002 294.3 0.473
2003 293.0 0.475
2004 291.7 0.477
2005 290.4 0.479
2006 289.0 0.481
2007 287.8 0.483
2008 286.5 0.485
2009 285.2 0.487
2010 283.9 0.489
2011 282.7 0.491
2012 281.4 0.492
2013 280.2 0.494
2014 279.0 0.495
2015 277.7 0.497
2016 276.5 0.498
2017 275.3 0.499
2018 274.1 0.500
2019 272.9 0.501
2020 271.7 0.502
2021 270.5 0.503
2022 269.3 0.504
2023 268.1 0.505
2024 267.0 0.506
2025 265.8 0.506
2026 264.6 0.507
2027 263.4 0.507
2028 262.3 0.508
2029 261.1 0.508
2030 259.9 0.508
2031 258.8 0.508
2032 257.6 0.508
2033 256.4 0.508
2034 255.3 0.508
2035 254.1 0.508
2036 252.9 0.507
2037 251.8 0.507
2038 250.6 0.506
2039 249.4 0.506
2040 248.2 0.505
2041 247.0 0.504
2042 245.9 0.503
2043 244.7 0.502
2044 243.5 0.501
2045 242.3 0.499
2046 241.0 0.498
2047 239.8 0.496
2048 238.6 0.494
2049 237.4 0.493
2050 236.1 0.491


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds23218-1217c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 23218-1217 HU 95 (HD 220188) : NOTES
 
 
discov_num notes refcode
HU 95 Combined magnitude from HD. Some visual observers report the pair
to be brighter.
 
 
REFERENCES
 
 
refcode metd author reference
Tok2023a orb - Tokovinin, A. 2023IAUDS.209....1T
Tok2023a Inf. Circ. 209, 1, 2023
 
 
DISCOVERER
 
 
discov author
HU Hussey, W.F.
TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
TOK Martinez, M., & Mondaca, E.
TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
TOK Tokovinin, A. & Briceno, C.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
23218-1217 HU 95 1991 22 312 0.5 10.26 11.40 G6/K1V -13 6390 NO 232150.70-121604.7
23218-1217 HU 95 2009 23 287 0.5 10.26 11.40 G6/K1V -13 6390 NO 232150.70-121604.7
23218-1217 HU 95 2022 24 269 0.5 10.26 11.40 G6/K1V -13 6390 NO 232150.70-121604.7

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

 
 
WDS 23218-1217 HU 95 (HD 220188) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 23218-1217 HU 95 (HD 220188) : MEASURES
 
 
No records found.

 
 
WDS 23218-1217 (HD 220188) : VIRTUAL EYEPIECE
 
 

23218-1217 HU 95A mag 10.26 Sp G6/K1V 23218-1217 HU 95B sep 0.5 P.A. 268.70 mag 11.4 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 23218-1217 (HD 220188) : ALADIN DSS IMAGE @ 23h 21m 50.70s -12° 16' 04.7"
 
 
 
 
WDS 23218-1217 HU 95 (HD 220188) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

23218-1217 HU 95 distance=1' 23237-1218 LDS2984 distance=30' 23195-1234 BRT2803 distance=39' 23228-1138 J 1422 distance=42' 23224-1259 HJ 310 distance=44' 23256-1156 SHN 44 distance=59' 23211-1327 LDS5073 distance=73' 23263-1138 HJ 3193 distance=76' 23167-1158 BRT2801 distance=77' 23188-1113 GWP3277 distance=78' 23191-1328 MCA 74Aa,Ab distance=82' 23191-1328 STF2998AB distance=82' 23214-1340 HDS3326AB distance=84' 23214-1340 HDS3326Aa,Ab distance=84' 23217-1052 GKM9532Aa,Ab distance=85' 23220-1345 GWP3284 distance=90' 23157-1221 LDS2977 distance=90' 23247-1056 ALD 80 distance=91' 23226-1353 RST4125 distance=99' 23184-1346 GWP3272 distance=104' 23206-1359 NSN 785 distance=104' 23175-1339 WIS 380 distance=105' 23168-1051 UC 4915AB distance=113' 23168-1051 GWP3268AC distance=113' 23171-1349 BU 182AB distance=118' 23171-1349 LDS6393AB,E distance=118' 23171-1349 BU 182AB,C distance=118' 23171-1349 BU 182AB,D distance=118' 23299-1223 SKF 126 distance=119' 23139-1241 GWP3257 distance=120' 23289-1108 LDS6034 distance=124' 23170-1404 BRT2802 distance=129' 23287-1052 TOI 291 distance=132' 23306-1146 UC 4969 distance=133' 23249-1421 KPP4316 distance=133' 23243-1425 KPP1380 distance=135' 23138-1324 BU 181AB distance=136' 23138-1324 BU 181AC distance=136' 23237-1430 HJ 5397 distance=137' 23136-1112 GWP3255 distance=137' 23234-1001 LDS2983 distance=138' 23300-1107 LDS2988 distance=139' 23213-0956 GWP3283 distance=140' 23147-1041 BU 715AB distance=142' 23147-1041 FOX 271AC distance=142' 23147-1041 FOX 271AD distance=142' 23126-1305 BRT2800 distance=144' 23191-0955 LDS6025 distance=146' 23120-1156 STF2988 distance=146' 23219-1442 RST4124 distance=147' 23120-1251 HJ 305 distance=149' 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 23218-1217 HU 95 269 0.5 1
Show 23237-1218 LDS2984 312 34.3 30
Show 23195-1234 BRT2803 104 3.8 39
Show 23228-1138 J 1422 94 7.5 42
Show 23224-1259 HJ 310 339 10.1 44
Show 23256-1156 SHN 44 35 0.2 59
Show 23211-1327 LDS5073 85 90.2 73
Show 23263-1138 HJ 3193 223 40.4 76
Show 23167-1158 BRT2801 234 2.7 77
Show 23188-1113 GWP3277 22 32.0 78
Show 23191-1328 MCA 74 Aa,Ab 88 0.1 82
Show 23191-1328 STF2998 AB 353 12.3 82
Show 23214-1340 HDS3326 AB 65 0.4 84
Show 23214-1340 HDS3326 Aa,Ab 213 0.1 84
Show 23217-1052 GKM9532 Aa,Ab 287 0.1 85
Show 23220-1345 GWP3284 345 11.1 90
Show 23157-1221 LDS2977 101 133.8 90
Show 23247-1056 ALD 80 77 2.5 91
Show 23226-1353 RST4125 351 2.3 99
Show 23184-1346 GWP3272 74 84.8 104
Show 23206-1359 NSN 785 59 6.0 104
Show 23175-1339 WIS 380 14 395.4 105
Show 23168-1051 UC 4915 AB 18 25.0 113
Show 23168-1051 GWP3268 AC 282 296.1 113
Show 23171-1349 BU 182 AB 228 0.7 118
Show 23171-1349 LDS6393 AB,E 52 18.4 118
Show 23171-1349 BU 182 AB,C 41 177.3 118
Show 23171-1349 BU 182 AB,D 102 87.3 118
Show 23299-1223 SKF 126 205 5.3 119
Show 23139-1241 GWP3257 142 20.7 120
Show 23289-1108 LDS6034 149 161.7 124
Show 23170-1404 BRT2802 104 3.1 129
Show 23287-1052 TOI 291 145 0.0 132
Show 23306-1146 UC 4969 345 33.2 133
Show 23249-1421 KPP4316 255 2.0 133
Show 23243-1425 KPP1380 329 10.4 135
Show 23138-1324 BU 181 AB 310 1.5 136
Show 23138-1324 BU 181 AC 247 18.8 136
Show 23237-1430 HJ 5397 345 73.7 137
Show 23136-1112 GWP3255 125 77.2 137
Show 23234-1001 LDS2983 344 14.1 138
Show 23300-1107 LDS2988 250 2.0 139
Show 23213-0956 GWP3283 146 83.2 140
Show 23147-1041 BU 715 AB 256 3.8 142
Show 23147-1041 FOX 271 AC 225 31.4 142
Show 23147-1041 FOX 271 AD 131 114.1 142
Show 23126-1305 BRT2800 172 2.4 144
Show 23191-0955 LDS6025 99 124.0 146
Show 23120-1156 STF2988 97 3.5 146
Show 23219-1442 RST4124 350 0.9 147
Show 23120-1251 HJ 305 104 8.8 149

 
 
WDS 23218-1217 : COMPONENTS
 
 
  A
B pa=268.7°
sep=0.50"
 
 
23218-1217 A
 
 
Name HD 220188 Coord arcsec 2000 232150.70-121604.7 Mag 10.26 Spectral class G6/K1V (yellow)
PmRA 32.00 PmDE -9.0 HIP 115346 Tycho2 5825-01149-1
HD 220188 BD BD-13 6390
Tycho2
Tycho2 5825-01149-1 Pflag RAmdeg 350.46129140 DEmdeg -12.26798549
PmRA 27.7 PmDE -11.7 E RAmdeg 25 E DEmdeg 26
E pmRA 1.6 E pmDE 1.6 EpRAm 1983.90 EpDEm 1981.54
Num 6 Q RAmdeg 0.6 Q DEmdeg 0.8 Q pmRA 0.6
Q pmDE 0.8 BTmag 10.832 E BTmag 0.060 VTmag 10.007
E VTmag 0.044 Prox 999 TYC T HIP 115346
CCDM AB RAdeg 350.46122444 DEdeg -12.26795306 EpRA 1990 1.67
EpDE 1990 1.46 E RAdeg 31.0 E DEdeg 34.5 Posflg P
Corr -0.2
Hipparcos
Catalog H HIP 115346 Proxy H RAhms 23 21 50.70
DEdms -12 16 04.7 Vmag 9.78 VarFlag R Vmag G
RAdeg 350.461 DEdeg -12.268 AstroRef A Plx 12.82
CCDM 36.64 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 312 Rho 0.459 HD BD BD-13 6390
CD CP Dm number -13 6390 VIred 0.79
SpType G8/K0V R SpType Coord arcsec 2000 232150.70-121604.7
Hipparcos 2
HIP 115346 Sn 15 So 3 Nc 2
RArad 6.1167024392 DErad -0.2141163264 Plx 12.02 PmRA 31.69
PmDE -6.92 E RArad 2.04 E DErad 1.87 E Plx 2.53
E pmRA 2.51 E pmDE 2.16 Hpmag E Hpmag 0.0026
SHp 0.021 VA 0 BV 0.74 E BV 0.015
VI 0.79
 
 
23218-1217 B
 
 
Coord arcsec 2000 232150.67-121604.7 Mag 11.4 Delta magnitude 1.14 Coordinate calculated yes