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Doubles in session


Current system
23125-2349
HDS 3306
HD 218957


Nearby doubles
19' : 23131-2406
SEE 479

27' : 23131-2324
UC 4903

46' : 23125-2303
LDS2971

69' : 23096-2446
UC 4897

81' : 23067-2345
B 588AB

84' : 23071-2310
LDS5047

85' : 23095-2503
B 592

86' : 23171-2252
BRT1576

90' : 23099-2227
RST3320

92' : 23109-2517
HJ 5386

93' : 23064-2310
UC 4882

96' : 23174-2242
UC 4919

106' : 23197-2314
SEE 482

107' : 23181-2503
UC 4921

108' : 23186-2243
TDT3975

108' : 23184-2500
HJ 5393

113' : 23128-2156
HLD 170

115' : 23073-2520
UC 4884

115' : 23095-2202
KPP2637

118' : 23064-2227
ARA1946

122' : 23074-2211
BRT1575

125' : 23140-2551
SWR 270

125' : 23065-2217
TDT3886

125' : 23076-2204
LDS6006

137' : 23221-2316
TDT4001

137' : 23191-2530
RST1162



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.

23125-2349 HDS 3306 (HD 218957)

 
 
23h 12m 30.01s -23° 49' 10.1" P.A. 79.00 sep 0.2 mag 8.45,9.32 Sp F3V dist. 155.76 pc (508.09 l.y.)
 
 
Coord 2000 23125-2349 Discov num HDS3306 Comp Coord arcsec 2000 23 12 30.01 -23 49 10.1
Date first 1991 Date last 2021 Obs 11
Pa first 70 Pa last 79 P.A. Now (θ) 79°
Sep first 0.2 Sep last 0.156 Sep. Now (ρ) 0.156"
Mag pri 8.45 Mag sec 9.32 delta mag (ΔM) 0.87 Spectral class F3V (yellow-white)
Pri motion ra +059 Sec motion ra
Pri motion dec -017 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 218957 Constellation Aquarius SAO 191719 HIP 114568
Tycho2 6972-00785-1 Gaia DR2 2384940162024332032 HD 218957 CD CD-2417535
CP CP-24 7434 Distance 155.76 Distance ly 508.09
 
 
ORBITAL ELEMENTS
 
 
Period (P)35.6y Periastron (T)2011.19y Semi-major axis (a)0.107a
Eccentricity (e)0.8 Inclination (i)135.7° Longitude of periastron (ω)219.2°
Node (Ω)96.5° Notes ReferenceTok2017c
Equinox2000 Last observation2016 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 53.6 0.145
2001 51.1 0.138
2002 48.3 0.130
2003 45.1 0.121
2004 41.4 0.111
2005 37.0 0.101
2006 31.5 0.089
2007 24.1 0.076
2008 13.8 0.063
2009 357.7 0.049
2010 329.1 0.036
2011 268.3 0.022
2012 144.0 0.029
2013 114.5 0.057
2014 103.8 0.080
2015 97.5 0.098
2016 93.0 0.113
2017 89.5 0.126
2018 86.7 0.136
2019 84.2 0.145
2020 81.9 0.153
2021 79.9 0.159
2022 78.0 0.164
2023 76.2 0.168
2024 74.5 0.171
2025 72.8 0.173
2026 71.1 0.174
2027 69.5 0.175
2028 67.9 0.174
2029 66.2 0.173
2030 64.5 0.171


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


 
  


wds23125-2349e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 23125-2349 HDS 3306 (HD 218957) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2017c orb - Tokovinin, A. 2017IAUDS.193....1T
Tok2017c Inf. Circ. 193, 1, 2017
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
23125-2349 HDS3306 1991 1 70 0.2 8.45 9.32 F3V 231230.01-234910.1
23125-2349 HDS3306 2008 2 47 0.8 8.45 9.32 F3V 231230.01-234910.1
23125-2349 HDS3306 2014 3 279 0.1 8.45 9.32 F3V 231230.01-234910.1
23125-2349 HDS3306 2015 4 93 0.1 8.45 9.32 F3V 231230.01-234910.1
23125-2349 HDS3306 2017 7 87 0.1 8.45 9.32 F3V O 231230.01-234910.1
23125-2349 HDS3306 2018 8 85 0.1 8.45 9.32 F3V O 231230.01-234910.1
23125-2349 HDS3306 2019 9 83 0.1 8.45 9.32 F3V O 231230.01-234910.1
23125-2349 HDS3306 2020 10 80 0.2 8.45 9.32 F3V O 231230.01-234910.1
23125-2349 HDS3306 2021 11 79 0.2 8.45 9.32 F3V O 231230.01-234910.1

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

 
 
WDS 23125-2349 HDS 3306 (HD 218957) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 23125-2349 HDS 3306 (HD 218957) : MEASURES
 
 
No records found.

 
 
WDS 23125-2349 (HD 218957) : VIRTUAL EYEPIECE
 
 

23125-2349 HDS3306A mag 8.45 Sp F3V 23125-2349 HDS3306B sep 0.1 P.A. 78.00 mag 9.32 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 23125-2349 (HD 218957) : ALADIN DSS IMAGE @ 23h 12m 30.01s -23° 49' 10.1"
 
 
 
 
WDS 23125-2349 HDS 3306 (HD 218957) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

23125-2349 HDS3306 distance=0' 23131-2406 SEE 479 distance=19' 23131-2324 UC 4903 distance=27' 23125-2303 LDS2971 distance=46' 23096-2446 UC 4897 distance=69' 23067-2345 HDS3293Aa,Ab distance=81' 23067-2345 B 588AB distance=81' 23071-2310 LDS5047 distance=84' 23095-2503 B 592 distance=85' 23171-2252 BRT1576 distance=86' 23099-2227 RST3320 distance=90' 23109-2517 HJ 5386 distance=92' 23064-2310 UC 4882 distance=93' 23174-2242 UC 4919 distance=96' 23197-2314 SEE 482 distance=106' 23181-2503 UC 4921 distance=107' 23186-2243 TDT3975 distance=108' 23184-2500 HJ 5393 distance=108' 23128-2156 HLD 170 distance=113' 23073-2520 UC 4884 distance=115' 23095-2202 KPP2637 distance=115' 23064-2227 ARA1946 distance=118' 23074-2211 BRT1575 distance=122' 23140-2551 SWR 270 distance=125' 23065-2217 TDT3886 distance=125' 23076-2204 LDS6006 distance=125' 23221-2316 TDT4001 distance=137' 23191-2530 RST1162 distance=137' 23223-2415 B 599 distance=138' 23143-2608 LDS6016 distance=144' 23064-2152 HJ 3166 distance=145' 23230-2324 LDS6029 distance=146' 23120-2120 LDS6012 distance=148' 23153-2615 LDS6018 distance=153' 23100-2619 LDS5053 distance=155' 23236-2423 TDT4017 distance=157' 23088-2119 ARA1596AB distance=159' 23141-2107 HJ 3178 distance=164' 23214-2536 LDS6028 distance=164' 23006-2358 LDS5035 distance=165' 23185-2122 LDS6024 distance=168' 23001-2401 RST3315AB distance=172' 23001-2401 RST3315AB,C distance=172' 23228-2231 LDS6397 distance=172' 23152-2639 COO 255 distance=174' 23099-2057 LDS5052 distance=176' 23050-2124 LDS6000 distance=177' 23046-2611 B 587 distance=178' 23009-2216 BU 179 distance=186' 23020-2151 B 1018 distance=188' 23227-2136 WIS 382 distance=194' 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 23125-2349 HDS3306 79 0.2
Show 23131-2406 SEE 479 54 12.1 19
Show 23131-2324 UC 4903 132 15.5 27
Show 23125-2303 LDS2971 270 3.4 46
Show 23096-2446 UC 4897 71 35.6 69
Show 23067-2345 HDS3293 Aa,Ab 20 0.2 81
Show 23067-2345 B 588 AB 83 2.9 81
Show 23071-2310 LDS5047 48 151.1 84
Show 23095-2503 B 592 178 4.2 85
Show 23171-2252 BRT1576 169 4.5 86
Show 23099-2227 RST3320 92 0.2 90
Show 23109-2517 HJ 5386 237 15.4 92
Show 23064-2310 UC 4882 189 16.3 93
Show 23174-2242 UC 4919 183 8.2 96
Show 23197-2314 SEE 482 96 13.8 106
Show 23181-2503 UC 4921 230 24.8 107
Show 23186-2243 TDT3975 286 7.3 108
Show 23184-2500 HJ 5393 292 21.1 108
Show 23128-2156 HLD 170 313 1.0 113
Show 23073-2520 UC 4884 335 41.6 115
Show 23095-2202 KPP2637 112 24.5 115
Show 23064-2227 ARA1946 227 9.6 118
Show 23074-2211 BRT1575 345 3.4 122
Show 23140-2551 SWR 270 83 12.3 125
Show 23065-2217 TDT3886 255 1.4 125
Show 23076-2204 LDS6006 319 15.6 125
Show 23221-2316 TDT4001 243 0.5 137
Show 23191-2530 RST1162 18 0.5 137
Show 23223-2415 B 599 227 0.7 138
Show 23143-2608 LDS6016 166 59.4 144
Show 23064-2152 HJ 3166 138 7.8 145
Show 23230-2324 LDS6029 115 250.2 146
Show 23120-2120 LDS6012 21 88.8 148
Show 23153-2615 LDS6018 104 26.6 153
Show 23100-2619 LDS5053 31 43.3 155
Show 23236-2423 TDT4017 48 0.5 157
Show 23088-2119 ARA1596 AB 273 10.4 159
Show 23141-2107 HJ 3178 148 20.0 164
Show 23214-2536 LDS6028 82 146.7 164
Show 23006-2358 LDS5035 144 74.6 165
Show 23185-2122 LDS6024 77 289.1 168
Show 23001-2401 RST3315 AB 70 0.2 172
Show 23001-2401 RST3315 AB,C 61 5.2 172
Show 23228-2231 LDS6397 143 4.6 172
Show 23152-2639 COO 255 136 3.2 174
Show 23099-2057 LDS5052 25 49.9 176
Show 23050-2124 LDS6000 272 380.0 177
Show 23046-2611 B 587 10 0.1 178
Show 23009-2216 BU 179 116 13.3 186
Show 23020-2151 B 1018 23 6.2 188
Show 23227-2136 WIS 382 121 999.9 194

 
 
WDS 23125-2349 : COMPONENTS
 
 
  A
B pa=78.0°
sep=0.14"
 
 
23125-2349 A
 
 
Componente originario normalizzato AB Name HD 218957 Coord arcsec 2000 231230.01-234910.1 Mag 8.45
Spectral class F3V (yellow-white) PmRA 59.00 PmDE -17.0 SAO 191719
HIP 114568 Tycho2 6972-00785-1 HD 218957 CD CD-2417535
CP CP-24 7434
Tycho2
Tycho2 6972-00785-1 Pflag RAmdeg 348.12520634 DEmdeg -23.81952898
PmRA 56.8 PmDE -18.9 E RAmdeg 5 E DEmdeg 6
E pmRA 1.2 E pmDE 1.3 EpRAm 1991.30 EpDEm 1991.07
Num 12 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 8.451 E BTmag 0.016 VTmag 7.997
E VTmag 0.012 Prox 999 TYC T HIP 114568
CCDM AB RAdeg 348.12506556 DEdeg -23.81948500 EpRA 1990 1.83
EpDE 1990 1.66 E RAdeg 5.2 E DEdeg 6.3 Posflg P
Corr -0.2
SAO
SAO 191719 DelFlag RA1950 PmRA1950 0.0065
DE1950 PmDE1950 -0.006 Vmag 8 SpType F5
Double code Source 25 CatNum 15585 DM CD-2417535
DMcomp BDsup HD 218957 M HD 0
GC RA1950rad 6.06427954 DE1950rad -0.42047298 PmRA2000 0.0065
PmDE2000 -0.01
Hipparcos
Catalog H HIP 114568 Proxy H RAhms 23 12 30.01
DEdms -23 49 10.1 Vmag 7.95 VarFlag R Vmag G
RAdeg 348.125 DEdeg -23.8195 AstroRef * Plx 7.8
CCDM 23125-2349 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 70 Rho 0.176 HD 218957 BD
CD CD-2417535 CP CP-24 7434 Dm number -2417535 VIred 0.52
SpType F3V R SpType Coord arcsec 2000 231230.01-234910.1
Hipparcos 2
HIP 114568 Sn 55 So 3 Nc 2
RArad 6.075928442 DErad -0.4157284291 Plx 6.42 PmRA 59.05
PmDE -17.61 E RArad 0.88 E DErad 0.51 E Plx 0.93
E pmRA 1.23 E pmDE 0.74 Hpmag 8.0437 E Hpmag 0.0013
SHp 0.009 VA 0 BV 0.446 E BV 0.015
VI 0.52
CCDM
Ccdm 23125-2349 RComp Comp A Note1
Note2 Discov num DRAs 0.04 DDEs -10.3
R dRAs 82 Year Theta Rho
Obs 2 Vmag 8.4 Sp F3 PmNote *
PmRA 59 PmDE -17 Dm number -2417535 Cat1 CD
Name2 191719 Cat2 SAO HD 218957 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 114568
 
 
23125-2349 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 231230.02-234910.1 Mag 9.32 Calc delta mag 0.87
Calc coord yes
CCDM
Ccdm 23125-2349 RComp Comp B Note1
Note2 Discov num HDS DRAs 0.05 DDEs -10.3
R dRAs 82 Year 1991 Theta 70 Rho 0.2
Obs 1 Vmag 9.3 Sp PmNote *
PmRA 59 PmDE -17 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 114568