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Doubles in session


Current system
20462+1554
WSI 110 Aa,Ab


Nearby doubles
11' : 20468+1602
BPM2264

15' : 20467+1607
STF2727AB

20' : 20457+1537
BPM2255

23' : 20466+1616
BPM2261

23' : 20466+1532
J 3110

27' : 20446+1605
BPM2245

29' : 20481+1601
BPM2269

30' : 20463+1624
BPM2257

32' : 20467+1523
BPM2263

35' : 20462+1520
YR 27AB

35' : 20481+1616
SKF1770

35' : 20485+1545
BPM2272

40' : 20489+1558
BPM2275

40' : 20436+1537
J 3108

41' : 20434+1604
HJ 1564

42' : 20477+1519
BPM2266

43' : 20435+1540
GWP2990

47' : 20446+1635
BPM2248AB

47' : 20485+1628
BPM2271

48' : 20448+1512
BPM2253

53' : 20446+1642
BPM2246AB

55' : 20437+1635
BPM2237

56' : 20501+1556
BPM2278

60' : 20434+1512
UC 4270

61' : 20444+1500
BPM2243

64' : 20506+1601
BPM2281



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.

20462+1554 WSI 110 Aa,Ab

 
 
20h 46m 13.31s +15° 54' 26.4" P.A. 343.00 sep 0.0 mag 7.90,8.90 Sp K0 dist. 4000 pc (13048 l.y.)
 
 
Coord 2000 20462+1554 Discov num WSI 110 Comp Aa,Ab Coord arcsec 2000 20 46 13.31 +15 54 26.4
Date first 2008 Date last 2021 Obs 7
Pa first 328 Pa last 343.1 P.A. Now (θ) 147.2°
Sep first 0.1 Sep last 0.05 Sep. Now (ρ) 0.072"
Mag pri 7.90 Mag sec 8.90 delta mag (ΔM) 1 Spectral class K0 (yellow-orange)
Pri motion ra +095 Sec motion ra
Pri motion dec +067 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
20462+1554 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 106466 20 46 13 +15 54 26 WSI 110 Aa,Ab 2021 7 343 0.0 7.90 8.90 1.00 Y <===
Show OR Del 106466 20 46 13 +15 54 26 STF 2725 AB 2019 287 12 6.2 7.54 8.20 0.66 Y
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus SAO 106466 HIP 102065 Tycho2 1634-03058-1
Gaia DR2 1762987494080694016 HD 197193 ADS 14270 BD BD+33 3987
Distance 4000 Distance ly 13048
 
 
ORBITAL ELEMENTS
 
 
Period (P)4.871y± 0 Periastron (T)2003.25y± 0.01 Semi-major axis (a)0.0979a± 0.0015
Eccentricity (e)0.254± 0.006 Inclination (i)78.5°± 1.5 Longitude of periastron (ω)344°± 1.5
Node (Ω)143.6°± 1 Notesn ReferenceTok2020e
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 307.8 0.068
2001 322.1 0.121
2002 334.5 0.077
2003 131.3 0.052
2004 169.2 0.038
2005 311.0 0.080
2006 323.3 0.121
2007 338.1 0.064
2008 136.6 0.063
2009 186.9 0.027
2010 313.5 0.090
2011 324.5 0.120
2012 343.7 0.049
2013 140.5 0.071
2014 222.7 0.020
2015 315.4 0.099
2016 325.7 0.117
2017 353.9 0.035
2018 143.9 0.074
2019 264.2 0.023
2020 317.1 0.106
2021 327.1 0.111
2022 18.3 0.021
2023 147.2 0.072
2024 286.9 0.034
2025 318.6 0.112
2026 328.6 0.105
2027 72.1 0.018
2028 150.8 0.067
2029 298.1 0.047
2030 319.9 0.117


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


 
  


wds20462%2B1554d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20462+1554 WSI 110 Aa,Ab : NOTES
 
 
discov_num notes refcode
STF2725 AB: H 2 66. MEv2010
A premature orbit has been computed.
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb AJ 160, 7, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
34 WSI Douglass, G.G., Hindsley, R.B., & Worley, C.E.
43 WSI Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
43 WSI Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
46 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
46 WSI Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
47 WSI Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
47 WSI Hennessy, G.S., Platais, I., et al.
48 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
48 WSI Hennessy, G.S., Rafferty, T.J., et al.
75 WSI Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
75 WSI C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
85 WSI Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,
85 WSI M., Kilian, C.M. & Warner, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20462+1554 WSI 110 Aa,Ab 2008 1 328 0.1 7.90 8.90 204613.31+155426.4
20462+1554 WSI 110 Aa,Ab 2015 2 321 0.1 7.90 8.90 K0 N 204613.31+155426.4
20462+1554 WSI 110 Aa,Ab 2018 3 337 0.1 7.90 8.90 K0 N 204613.31+155426.4
20462+1554 WSI 110 Aa,Ab 2019 4 309 0.1 7.90 8.90 K0 N 204613.31+155426.4
20462+1554 WSI 110 Aa,Ab 2020 5 325 0.1 7.90 8.90 K0 N 204613.31+155426.4
20462+1554 WSI 110 Aa,Ab 2021 7 343 0.0 7.90 8.90 K0 N 204613.31+155426.4

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

 
 
WDS 20462+1554 WSI 110 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20462+1554 WSI 110 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 20462+1554 : VIRTUAL EYEPIECE
 
 

20462+1554 STF2725A mag 7.54 Sp K0 20462+1554 WSI 110Ab mag 8.9 20462+1554 STF2725B sep 6.2 P.A. 11.20 mag 8.2 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 20462+1554 : ALADIN DSS IMAGE @ 20h 46m 13.31s +15° 54' 26.4"
 
 
 
 
WDS 20462+1554 WSI 110 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20462+1554 WSI 110Aa,Ab distance=0' 20468+1602 BPM2264 distance=11' 20467+1607 STF2727AB distance=15' 20467+1607 FYM 18AD distance=15' 20457+1537 BPM2255 distance=20' 20466+1616 BPM2261 distance=23' 20466+1532 J 3110 distance=23' 20446+1605 BPM2245 distance=27' 20481+1601 BPM2269 distance=29' 20463+1624 BPM2257 distance=30' 20467+1523 BPM2263 distance=32' 20462+1520 YR 27AB distance=35' 20481+1616 SKF1770 distance=35' 20485+1545 BPM2272 distance=35' 20489+1558 BPM2275 distance=40' 20436+1537 J 3108 distance=40' 20434+1604 HJ 1564 distance=41' 20477+1519 BPM2266 distance=42' 20435+1540 GWP2990 distance=43' 20446+1635 BPM2250BC distance=46' 20446+1635 BPM2248AB distance=47' 20446+1635 BPM2249AC distance=47' 20485+1628 BPM2271 distance=47' 20448+1512 BPM2253 distance=48' 20446+1642 BPM2246AB distance=53' 20446+1642 BPM2247AC distance=53' 20437+1635 BPM2237 distance=55' 20501+1556 BPM2278 distance=56' 20434+1512 UC 4270 distance=60' 20444+1500 BPM2243 distance=61' 20506+1601 BPM2281 distance=64' 20435+1504 CIA 11 distance=64' 20505+1616 KPP4216 distance=65' 20455+1448 GWP2994 distance=68' 20503+1630 LDS1048AB distance=68' 20503+1630 LDS1048AC distance=68' 20509+1544 BPM2282 distance=68' 20413+1551 UC 4257 distance=72' 20485+1448 J 1890 distance=72' 20485+1450 BRT1349 distance=73' 20415+1611 J 2319 distance=74' 20435+1657 STF2720 distance=74' 20465+1439 BPM2259 distance=76' 20483+1444 LSC 93 distance=76' 20509+1517 J 3113 distance=78' 20514+1619 BPM2283 distance=79' 20503+1649 TDT2571 distance=81' 20463+1715 GWP2995 distance=81' 20456+1714 COU 425 distance=81' 20406+1559 BPM2225 distance=81' 20518+1545 GWP3007 distance=81' 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 20462+1554 WSI 110 Aa,Ab 343 0.0
Show 20462+1554 STF2725 AB 12 6.2
Show 20468+1602 BPM2264 222 107.2 11
Show 20467+1607 STF2727 AB 266 8.8 15
Show 20467+1607 FYM 18 AD 323 109.4 15
Show 20457+1537 BPM2255 85 72.3 20
Show 20466+1616 BPM2261 202 69.5 23
Show 20466+1532 J 3110 222 6.9 23
Show 20446+1605 BPM2245 198 112.1 27
Show 20481+1601 BPM2269 222 81.9 29
Show 20463+1624 BPM2257 337 107.8 30
Show 20467+1523 BPM2263 265 53.6 32
Show 20462+1520 YR 27 AB 240 0.9 35
Show 20481+1616 SKF1770 223 3.4 35
Show 20485+1545 BPM2272 333 103.7 35
Show 20489+1558 BPM2275 143 74.7 40
Show 20436+1537 J 3108 196 6.3 40
Show 20434+1604 HJ 1564 41 11.4 41
Show 20477+1519 BPM2266 294 106.0 42
Show 20435+1540 GWP2990 291 26.5 43
Show 20446+1635 BPM2250 BC 332 117.2 46
Show 20446+1635 BPM2248 AB 95 107.8 47
Show 20446+1635 BPM2249 AC 29 107.0 47
Show 20485+1628 BPM2271 127 97.8 47
Show 20448+1512 BPM2253 241 75.8 48
Show 20446+1642 BPM2246 AB 16 90.0 53
Show 20446+1642 BPM2247 AC 173 116.0 53
Show 20437+1635 BPM2237 49 108.4 55
Show 20501+1556 BPM2278 296 68.3 56
Show 20434+1512 UC 4270 2 52.2 60
Show 20444+1500 BPM2243 169 106.5 61
Show 20506+1601 BPM2281 268 35.3 64
Show 20435+1504 CIA 11 334 0.0 64
Show 20505+1616 KPP4216 237 1.6 65
Show 20455+1448 GWP2994 229 32.3 68
Show 20503+1630 LDS1048 AB 151 13.7 68
Show 20503+1630 LDS1048 AC 213 1.6 68
Show 20509+1544 BPM2282 160 54.6 68
Show 20413+1551 UC 4257 208 20.3 72
Show 20485+1448 J 1890 141 6.8 72
Show 20485+1450 BRT1349 46 2.7 73
Show 20415+1611 J 2319 192 7.5 74
Show 20435+1657 STF2720 177 4.0 74
Show 20465+1439 BPM2259 296 106.3 76
Show 20483+1444 LSC 93 142 0.2 76
Show 20509+1517 J 3113 111 4.8 78
Show 20514+1619 BPM2283 243 38.1 79
Show 20503+1649 TDT2571 258 0.8 81
Show 20463+1715 GWP2995 257 8.3 81
Show 20456+1714 COU 425 327 0.7 81
Show 20406+1559 BPM2225 57 22.7 81

 
 
WDS 20462+1554 : COMPONENTS
 
 
  A Ab
Ab pa=343.7°
sep=0.05"
 
B pa=11.2°
sep=6.19"
pa=11.4°
sep=6.15"
 
 
20462+1554 A
 
 
Name OR Del Coord arcsec 2000 204613.31+155426.4 Mag 7.54 Spectral class K0 (yellow-orange)
PmRA 87.00 PmDE 65.0 SAO 106466 HIP 102490
Tycho2 1634-03058-1 HD 197913 GC 28953 BD BD+15 4251
Tycho2
Tycho2 1634-03058-1 Pflag RAmdeg 311.55546060 DEmdeg 15.90731998
PmRA 95.1 PmDE 67.2 E RAmdeg 4 E DEmdeg 7
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.71 EpDEm 1991.01
Num 6 Q RAmdeg 1.0 Q DEmdeg 0.7 Q pmRA 1.1
Q pmDE 0.7 BTmag 8.430 E BTmag 0.017 VTmag 7.542
E VTmag 0.011 Prox 60 TYC T HIP 102490
CCDM A RAdeg 311.55523583 DEdeg 15.90715806 EpRA 1990 1.81
EpDE 1990 1.33 E RAdeg 4.3 E DEdeg 6.7 Posflg
Corr 0.3
SAO
SAO 106466 DelFlag RA1950 PmRA1950 0.0065
DE1950 PmDE1950 0.065 Vmag 7.5 SpType K0
Double code Source 70 CatNum 28953 DM BD+15 4251
DMcomp A BDsup HD 197913 M HD 0
GC 28953 RA1950rad 5.42749695 DE1950rad 0.27441254 PmRA2000 0.0066
PmDE2000 0.063
Hipparcos
Catalog H HIP 102490 Proxy H RAhms 20 46 13.25
DEdms +15 54 25.8 Vmag 7.09 VarFlag R Vmag H
RAdeg 311.555 DEdeg 15.9072 AstroRef A Plx 26.15
CCDM 20462+1554 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 10 Rho 5.975 HD 197913 BD BD+15 4251
CD CP Dm number +15 4251 VIred 0.81
SpType K0 R SpType Coord arcsec 2000 204613.25+155425.8
Hipparcos 2
HIP 102490 Sn 17 So 3 Nc 2
RArad 5.4376643754 DErad 0.2776322535 Plx 27.43 PmRA 89.17
PmDE 62.44 E RArad 1.26 E DErad 0.71 E Plx 1.2
E pmRA 1.75 E pmDE 0.98 Hpmag 7.2426 E Hpmag 0.0017
SHp 0.013 VA 0 BV 0.794 E BV 0.013
VI 0.83
CCDM
Ccdm 20462+1554 RComp Comp A Note1
Note2 Discov num DRAs 1.30 DDEs 25.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.5 Sp K0 PmNote *
PmRA 94 PmDE 65 Dm number +15 4251 Cat1 BD
Name2 106466 Cat2 SAO HD 197913 M HD
ADS BDS A14270 M ADS BDS N IDS IDS 20416N1532A
HIC 102490
 
 
20462+1554 Ab
 
 
Coord arcsec 2000 204613.31+155426.4 Mag 8.9 Calc delta mag 1 Calc coord yes
 
 
20462+1554 B
 
 
Coord arcsec 2000 204613.39+155432.5 Mag 8.2 PmRA 96.00 PmDE 72.0
Tycho2 1634-02227-1 Calc delta mag 0.3 Calc coord yes
Tycho2
Tycho2 1634-02227-1 Pflag RAmdeg 311.55575434 DEmdeg 15.90897360
PmRA 99.5 PmDE 75.4 E RAmdeg 5 E DEmdeg 9
E pmRA 1.8 E pmDE 1.7 EpRAm 1991.73 EpDEm 1991.00
Num 4 Q RAmdeg 1.0 Q DEmdeg 1.1 Q pmRA 0.9
Q pmDE 1.1 BTmag 9.113 E BTmag 0.019 VTmag 8.200
E VTmag 0.013 Prox 60 TYC T HIP 102490
CCDM B RAdeg 311.55551944 DEdeg 15.90879194 EpRA 1990 1.83
EpDE 1990 1.33 E RAdeg 5.4 E DEdeg 9.3 Posflg D
Corr 0.2
CCDM
Ccdm 20462+1554 RComp Comp B Note1 *
Note2 Discov num STF2725 DRAs 1.31 DDEs 29.4
R dRAs 10 Year 1959 Theta 008 Rho 5.8
Obs 99 Vmag 8.2 Sp PmNote *
PmRA 93 PmDE 37 Dm number Cat1
Name2 106467 Cat2 SAO HD M HD
ADS BDS A14270 M ADS BDS N IDS IDS 20416N1532B
HIC 102490