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Doubles in session


Current system
03217+0845
STF 380
HD 20837


Nearby doubles
22' : 03210+0827
PLQ 41AB

24' : 03206+0902
GIC 40

25' : 03216+0821
LDS3482

41' : 03214+0803
J 304

50' : 03186+0827
SKF 482AB

54' : 03244+0810
LDS3489

69' : 03181+0803
HDS 414AB

88' : 03245+1003
UC 45

90' : 03273+0810
TDS2551

92' : 03174+0739
BU 1039AB

98' : 03233+0711
HEI 631

100' : 03272+0944
HDS 433AB

108' : 03240+1028
LSC 25

112' : 03276+0954
J 305

113' : 03276+0956
CFN 3

113' : 03213+1038
HEI 449

114' : 03227+1037
GIC 41AB

114' : 03141+0832
GIC 38

114' : 03143+0911
A 828

114' : 03198+0655
LDS3477

147' : 03181+0629
TOK 474

155' : 03315+0750
CLZ 23

159' : 03112+0912
LEP 12

160' : 03318+0749
A 1931

162' : 03258+0616
SKF1685

164' : 03170+0618
CLZ 20



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.

03217+0845 STF 380 (HD 20837)

 
 
03h 21m 43.84s +08° 45' 23.5" P.A. 4.00 sep 0.9 mag 9.02,9.81 Sp G0
 
 
Coord 2000 03217+0845 Discov num STF 380 Comp Coord arcsec 2000 03 21 43.84 +08 45 23.5
Date first 1829 Date last 2018 Obs 92
Pa first 90 Pa last 4 P.A. Now (θ) 4°
Sep first 1.5 Sep last 0.888 Sep. Now (ρ) 0.888"
Mag pri 9.02 Mag sec 9.81 delta mag (ΔM) 0.79 Spectral class G0 (yellow)
Pri motion ra -027 Sec motion ra -027
Pri motion dec -098 Sec motion dec -098
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 20837 Constellation Cetus SAO 111150 Tycho2 0649-00737-1
Gaia DR2 11143687789164544 HD 20837 GC 4015 ADS 2491
 
 
ORBITAL ELEMENTS
 
 
Period (P)663.5558y± 324.0899 Periastron (T)1786.8967y± 49.1078 Semi-major axis (a)1.47962a± 0.40496
Eccentricity (e)0.35215± 0.23884 Inclination (i)119.531°± 9.369 Longitude of periastron (ω)293.683°± 36.696
Node (Ω)83.256°± 14.967 Notesn ReferenceIzm2019
Equinox Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 15.6 0.951
2001 15.0 0.949
2002 14.3 0.948
2003 13.7 0.947
2004 13.1 0.945
2005 12.5 0.944
2006 11.9 0.943
2007 11.3 0.942
2008 10.7 0.941
2009 10.0 0.940
2010 9.4 0.940
2011 8.8 0.939
2012 8.2 0.938
2013 7.6 0.938
2014 6.9 0.937
2015 6.3 0.937
2016 5.7 0.936
2017 5.1 0.936
2018 4.4 0.936
2019 3.8 0.935
2020 3.2 0.935
2021 2.5 0.935
2022 1.9 0.935
2023 1.3 0.935
2024 0.7 0.936
2025 0.936
2026 359.4 0.936
2027 358.8 0.936
2028 358.2 0.937
2029 357.5 0.937
2030 356.9 0.938


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


 
  


wds03217%2B0845b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 03217+0845 STF 380 (HD 20837) : NOTES
 
 
discov_num notes refcode
STF 380 A premature orbit has been calculated.
 
 
REFERENCES
 
 
refcode metd author reference
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03217+0845 STF 380 2006 84 11 0.9 9.02 9.81 G0 NO 032143.84+084523.5
03217+0845 STF 380 2008 85 10 1.0 9.02 9.81 G0 NO 032143.84+084523.5
03217+0845 STF 380 2015 87 6 0.9 9.02 9.81 G0 NO 032143.84+084523.5
03217+0845 STF 380 2016 88 7 0.9 9.02 9.81 G0 NO 032143.84+084523.5
03217+0845 STF 380 2018 89 4 0.9 9.02 9.81 G0 NO 032143.84+084523.5

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

 
 
WDS 03217+0845 STF 380 (HD 20837) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03217+0845 STF 380 (HD 20837) : MEASURES
 
 
No records found.

 
 
WDS 03217+0845 (HD 20837) : VIRTUAL EYEPIECE
 
 

03217+0845 STF 380A mag 9.02 Sp G0 03217+0845 STF 380B sep 0.9 P.A. 4.00 mag 9.81 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 03217+0845 (HD 20837) : ALADIN DSS IMAGE @ 03h 21m 43.84s +08° 45' 23.5"
 
 
 
 
WDS 03217+0845 STF 380 (HD 20837) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03217+0845 STF 380 distance=1' 03210+0827 PLQ 41AB distance=22' 03210+0827 PLQ 41AC distance=22' 03206+0902 GIC 40 distance=24' 03216+0821 LDS3482 distance=25' 03214+0803 J 304 distance=41' 03186+0827 LUH 6BC distance=50' 03186+0827 SKF 482AB distance=50' 03186+0827 LUH 6AC distance=50' 03244+0810 LDS3489 distance=54' 03181+0803 HDS 414AB distance=69' 03181+0803 TOK 475AC distance=69' 03245+1003 UC 45 distance=88' 03273+0810 TDS2551 distance=90' 03174+0739 BU 1039AB distance=92' 03174+0739 BU 1039AC distance=92' 03233+0711 HEI 631 distance=98' 03272+0944 HDS 433AB distance=100' 03272+0944 MKT 15Aa,Ab distance=100' 03240+1028 LSC 25 distance=108' 03276+0954 J 305 distance=112' 03276+0956 CFN 3 distance=113' 03213+1038 HEI 449 distance=113' 03227+1037 GIC 41AB distance=114' 03227+1037 GIC 41AC distance=114' 03141+0832 GIC 38 distance=114' 03143+0911 A 828 distance=114' 03198+0655 LDS3477 distance=114' 03227+1037 GIC 41BC distance=116' 03181+0629 TOK 474 distance=147' 03315+0750 CLZ 23 distance=155' 03112+0912 LEP 12 distance=159' 03318+0749 A 1931 distance=160' 03258+0616 SKF1685 distance=162' 03170+0618 CLZ 20 distance=164' 03201+1135 LDS3478 distance=172' 03280+1114 SKF1432 distance=176' 03337+0832 KPP3168 distance=179' 03264+1131 SKF1431 distance=180' 03183+0550 LAS 22 distance=183' 03257+0551 JNN 255AB distance=184' 03257+0551 JNN 255AC distance=184' 03112+0710 A 2031 distance=184' 03317+0656 SLW 157 distance=184' 03341+0901 KPP1669 distance=185' 03332+0727 SKF1142 distance=188' 03286+1123 BU 879 distance=188' 03161+1138 WIS 87 distance=192' 03148+1127 RAO 539 distance=192' 03171+1145 GRV 169 distance=193' 03250+0537 HEI 632 distance=195' 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 03217+0845 STF 380 4 0.9 1
Show 03210+0827 PLQ 41 AB 310 42.7 22
Show 03210+0827 PLQ 41 AC 8 50.8 22
Show 03206+0902 GIC 40 84 81.8 24
Show 03216+0821 LDS3482 249 17.3 25
Show 03214+0803 J 304 84 4.5 41
Show 03186+0827 LUH 6 BC 48 71.2 50
Show 03186+0827 SKF 482 AB 353 5.1 50
Show 03186+0827 LUH 6 AC 45 74.8 50
Show 03244+0810 LDS3489 55 80.6 54
Show 03181+0803 HDS 414 AB 310 0.9 69
Show 03181+0803 TOK 475 AC 298 528.9 69
Show 03245+1003 UC 45 261 51.7 88
Show 03273+0810 TDS2551 61 0.7 90
Show 03174+0739 BU 1039 AB 201 2.5 92
Show 03174+0739 BU 1039 AC 38 156.0 92
Show 03233+0711 HEI 631 102 1.5 98
Show 03272+0944 HDS 433 AB 267 0.6 100
Show 03272+0944 MKT 15 Aa,Ab 337 0.0 100
Show 03240+1028 LSC 25 284 0.6 108
Show 03276+0954 J 305 113 0.9 112
Show 03276+0956 CFN 3 297 1.5 113
Show 03213+1038 HEI 449 53 0.3 113
Show 03227+1037 GIC 41 AB 9 170.1 114
Show 03227+1037 GIC 41 AC 312 213.1 114
Show 03141+0832 GIC 38 19 28.2 114
Show 03143+0911 A 828 204 1.2 114
Show 03198+0655 LDS3477 74 21.9 114
Show 03227+1037 GIC 41 BC 263 186.7 116
Show 03181+0629 TOK 474 189 999.9 147
Show 03315+0750 CLZ 23 355 17.2 155
Show 03112+0912 LEP 12 1 4.3 159
Show 03318+0749 A 1931 47 0.8 160
Show 03258+0616 SKF1685 6 1.8 162
Show 03170+0618 CLZ 20 210 75.9 164
Show 03201+1135 LDS3478 27 17.1 172
Show 03280+1114 SKF1432 237 2.3 176
Show 03337+0832 KPP3168 313 1.5 179
Show 03264+1131 SKF1431 313 4.1 180
Show 03183+0550 LAS 22 272 19.1 183
Show 03257+0551 JNN 255 AB 179 0.2 184
Show 03257+0551 JNN 255 AC 217 2.1 184
Show 03112+0710 A 2031 249 1.4 184
Show 03317+0656 SLW 157 261 13.1 184
Show 03341+0901 KPP1669 237 12.9 185
Show 03332+0727 SKF1142 145 7.4 188
Show 03286+1123 BU 879 71 24.5 188
Show 03161+1138 WIS 87 139 682.2 192
Show 03148+1127 RAO 539 186 0.6 192
Show 03171+1145 GRV 169 298 15.1 193
Show 03250+0537 HEI 632 111 0.9 195

 
 
WDS 03217+0845 : COMPONENTS
 
 
  A
B pa=4.0°
sep=0.89"
 
 
03217+0845 A
 
 
Componente originario normalizzato AB Name HD 20837 Coord arcsec 2000 032143.84+084523.5 Mag 9.02
Spectral class G0 (yellow) PmRA -27.00 PmDE -98.0 SAO 111150
Tycho2 0649-00737-1 HD 20837 GC 4015 ADS 2491
DM BD+08 500
Tycho2
Tycho2 0649-00737-1 Pflag P RAmdeg 50.43266415 DEmdeg 8.75652838
PmRA -27.3 PmDE -97.6 E RAmdeg 12 E DEmdeg 14
E pmRA 2.0 E pmDE 1.9 EpRAm 1991.19 EpDEm 1990.81
Num 5 Q RAmdeg 0.5 Q DEmdeg 0.5 Q pmRA 0.4
Q pmDE 0.5 BTmag 9.717 E BTmag 0.026 VTmag 9.023
E VTmag 0.019 Prox 9 TYC T HIP
CCDM RAdeg 50.43270528 DEdeg 8.75670667 EpRA 1990 1.72
EpDE 1990 1.60 E RAdeg 11.5 E DEdeg 13.9 Posflg D
Corr -0.2
SAO
SAO 111150 DelFlag RA1950 PmRA1950 -0.0017
DE1950 PmDE1950 -0.133 Vmag 8.3 SpType G0
Double code Source 70 CatNum 4015 DM BD+08 500
DMcomp BDsup HD 20837 M HD 0
GC 4015 RA1950rad 0.8684703 DE1950rad 0.1497241 PmRA2000 -0.0016
PmDE2000 -0.137
CCDM
Ccdm 03217+0845 RComp Comp A Note1
Note2 Discov num DRAs 1.88 DDEs 23.4
R dRAs 12 Year Theta Rho
Obs 2 Vmag 8.7 Sp G0 PmNote
PmRA -22 PmDE 36 Dm number +08 500 Cat1 BD
Name2 +08 351 Cat2 AGK2/3 HD 20837 M HD
ADS BDS A 2491 M ADS BDS N IDS IDS 03164N0824A
HIC
 
 
03217+0845 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 032143.84+084524.4 Mag 9.81 PmRA -27.00
PmDE -98.0 Tycho2 0649-00737-2 Calc delta mag 0.79 Calc coord yes
Tycho2
Tycho2 0649-00737-2 Pflag P RAmdeg 50.43266415 DEmdeg 8.75652838
PmRA -27.3 PmDE -97.6 E RAmdeg 12 E DEmdeg 14
E pmRA 2.0 E pmDE 1.9 EpRAm 1991.19 EpDEm 1990.81
Num 5 Q RAmdeg 0.5 Q DEmdeg 0.5 Q pmRA 0.4
Q pmDE 0.5 BTmag 10.663 E BTmag 0.049 VTmag 9.807
E VTmag 0.033 Prox 9 TYC T HIP
CCDM RAdeg 50.43281000 DEdeg 8.75694056 EpRA 1990 1.73
EpDE 1990 1.60 E RAdeg 22.0 E DEdeg 27.5 Posflg D
Corr -0.2
CCDM
Ccdm 03217+0845 RComp Comp B Note1
Note2 Discov num STF 380 DRAs DDEs
R dRAs Year 1959 Theta 036 Rho 1.1
Obs 99 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2491 M ADS BDS N IDS IDS 03164N0824B
HIC