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Doubles in session


Current system
18439+0237
STF 2369
HD 173174


Nearby doubles
22' : 18449+0253
HEI 562

30' : 18424+0218
BAL1969

44' : 18464+0259
BAL1970

44' : 18440+0321
A 2388

49' : 18429+0324
BAL2499

51' : 18410+0302
BU 1328

52' : 18386+0236
HJ 5500AB

59' : 18406+0307
STF2361

61' : 18436+0337
TDT1019

61' : 18456+0142
A 2262

62' : 18425+0334
J 464AB

68' : 18473+0323
LDS5866

70' : 18439+0346
TDS 939

72' : 18481+0203
J 2530

73' : 18401+0321
AG 224

79' : 18393+0315
BAL2498AB

80' : 18473+0136
TDT1055

90' : 18380+0248
LDS5240

98' : 18374+0238
BU 1327

99' : 18447-0100
HJ 5501

104' : 18375+0313
ARY 15

106' : 18409+0102
CON 36AB

107' : 18465-0058
STF2379AB

111' : 18394+0111
BAL1503

111' : 18465+0420
TDT1050

112' : 18418+0052
HJ 865



Selections
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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.

18439+0237 STF 2369 (HD 173174)

 
 
18h 43m 55.78s +02° 37' 16.6" P.A. 25.00 sep 0.3 mag 9.43,8.32 Sp G0 dist. 85.47 pc (278.8 l.y.)
 
 
Coord 2000 18439+0237 Discov num STF2369 Comp Coord arcsec 2000 18 43 55.78 +02 37 16.6
Date first 1830 Date last 2016 Obs 111
Pa first 98 Pa last 24.8 P.A. Now (θ) 24.8°
Sep first 1.5 Sep last 0.279 Sep. Now (ρ) 0.279"
Mag pri 9.43 Mag sec 8.32 delta mag (ΔM) 1.11 Spectral class G0 (yellow)
Pri motion ra -033 Sec motion ra -033
Pri motion dec -060 Sec motion dec -060
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173174 Constellation Serpens SAO 123858 HIP 91889
Tycho2 0451-01023-1 Gaia DR2 4280130490399573248 HD 173174 GC 25622
ADS 11617 BD BD+02 3668 Distance 85.47 Distance ly 278.8
 
 
ORBITAL ELEMENTS
 
 
Period (P)1458.9093y± 684.0089 Periastron (T)2066.3115y± 285.9756 Semi-major axis (a)3.70102a± 2.12697
Eccentricity (e)0.95848± 0.25228 Inclination (i)98.969°± 6.87 Longitude of periastron (ω)242.157°± 51.826
Node (Ω)126.819°± 23.556 Notes ReferenceIzm2019
Equinox Last observation2007 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 55.2 0.379
2001 54.1 0.373
2002 53.0 0.367
2003 51.9 0.361
2004 50.7 0.356
2005 49.5 0.350
2006 48.3 0.345
2007 47.0 0.340
2008 45.7 0.335
2009 44.3 0.330
2010 42.9 0.325
2011 41.5 0.321
2012 40.0 0.316
2013 38.5 0.312
2014 36.9 0.308
2015 35.3 0.304
2016 33.7 0.301
2017 32.0 0.297
2018 30.3 0.294
2019 28.5 0.291
2020 26.7 0.288
2021 24.9 0.286
2022 23.0 0.284
2023 21.1 0.282
2024 19.2 0.280
2025 17.3 0.278
2026 15.4 0.277
2027 13.4 0.276
2028 11.4 0.276
2029 9.5 0.275
2030 7.5 0.275


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


 
  


wds18439%2B0237a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18439+0237 STF 2369 (HD 173174) : NOTES
 
 
No records found.

 
 
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
18439+0237 STF2369 2007 109 50 0.4 9.43 8.32 G0 D 184355.78+023716.6
18439+0237 STF2369 2016 110 25 0.3 9.43 8.32 G0 O 184355.78+023716.6

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

 
 
WDS 18439+0237 STF 2369 (HD 173174) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18439+0237 STF 2369 (HD 173174) : MEASURES
 
 
No records found.

 
 
WDS 18439+0237 (HD 173174) : VIRTUAL EYEPIECE
 
 

18439+0237 STF2369A mag 9.43 Sp G0 18439+0237 STF2369B sep 0.3 P.A. 24.80 mag 8.32 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 18439+0237 (HD 173174) : ALADIN DSS IMAGE @ 18h 43m 55.78s +02° 37' 16.6"
 
 
 
 
WDS 18439+0237 STF 2369 (HD 173174) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18439+0237 STF2369 distance=0' 18449+0253 HEI 562 distance=22' 18424+0218 BAL1969 distance=30' 18464+0259 BAL1970 distance=44' 18440+0321 A 2388 distance=44' 18429+0324 BAL2499 distance=49' 18410+0302 BU 1328 distance=51' 18386+0236 HJ 5500AB distance=52' 18386+0236 DAM 381AC distance=52' 18386+0236 SKF2135AD distance=52' 18406+0307 STF2361 distance=59' 18436+0337 TDT1019 distance=61' 18456+0142 A 2262 distance=61' 18425+0334 J 464AB distance=62' 18425+0334 J 464AC distance=62' 18473+0323 LDS5866 distance=68' 18439+0346 TDS 939 distance=70' 18481+0203 J 2530 distance=72' 18401+0321 AG 224 distance=73' 18393+0315 BAL2498AB distance=79' 18393+0315 BAL2498AC distance=79' 18473+0136 TDT1055 distance=80' 18380+0248 LDS5240 distance=90' 18374+0238 BU 1327 distance=98' 18447-0100 HJ 5501 distance=99' 18375+0313 ARY 15 distance=104' 18409+0102 CON 36AB distance=106' 18409+0102 CON 36CD distance=106' 18465-0058 STF2379BC distance=107' 18465-0058 MCA 53Aa,Ab distance=107' 18465-0058 STF2379AB distance=107' 18465-0058 STF2379AC distance=107' 18394+0111 BAL1503 distance=111' 18465+0420 TDT1050 distance=111' 18418+0052 HJ 865 distance=112' 18379+0352 KPP 421 distance=118' 18424+0040 HDZ 2 distance=120' 18360+0234 STN 43 distance=120' 18413+0433 J 2143 distance=123' 18357+0239 TDT 950 distance=123' 18425+0439 HJ 866AB distance=124' 18425+0439 HJ 866AC distance=124' 18382+0410 TDT 968 distance=127' 18436+0444 A 357 distance=127' 18454+0444 BAL2935 distance=129' 18526+0212 TDS 951 distance=133' 18468+0443 TDT1051 distance=133' 18514+0351 DOO 72 distance=135' 18462+0019 TDT1044 distance=143' 18437-0014 A 858AB distance=144' 18437-0014 AOT 74AB,C distance=144' 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 18439+0237 STF2369 25 0.3
Show 18449+0253 HEI 562 253 0.4 22
Show 18424+0218 BAL1969 279 21.4 30
Show 18464+0259 BAL1970 253 2.8 44
Show 18440+0321 A 2388 131 0.3 44
Show 18429+0324 BAL2499 319 11.5 49
Show 18410+0302 BU 1328 283 2.1 51
Show 18386+0236 HJ 5500 AB 40 84.0 52
Show 18386+0236 DAM 381 AC 228 14.2 52
Show 18386+0236 SKF2135 AD 238 54.4 52
Show 18406+0307 STF2361 211 24.9 59
Show 18436+0337 TDT1019 132 0.4 61
Show 18456+0142 A 2262 325 1.2 61
Show 18425+0334 J 464 AB 110 0.9 62
Show 18425+0334 J 464 AC 134 3.4 62
Show 18473+0323 LDS5866 294 7.1 68
Show 18439+0346 TDS 939 68 1.3 70
Show 18481+0203 J 2530 232 1.4 72
Show 18401+0321 AG 224 348 22.1 73
Show 18393+0315 BAL2498 AB 64 6.6 79
Show 18393+0315 BAL2498 AC 109 14.8 79
Show 18473+0136 TDT1055 89 0.4 80
Show 18380+0248 LDS5240 6 3.3 90
Show 18374+0238 BU 1327 174 13.6 98
Show 18447-0100 HJ 5501 6 21.0 99
Show 18375+0313 ARY 15 142 153.6 104
Show 18409+0102 CON 36 AB 141 0.2 106
Show 18409+0102 CON 36 CD 281 2.2 106
Show 18465-0058 STF2379 BC 172 13.4 107
Show 18465-0058 MCA 53 Aa,Ab 95 0.0 107
Show 18465-0058 STF2379 AB 121 12.5 107
Show 18465-0058 STF2379 AC 155 21.8 107
Show 18394+0111 BAL1503 245 3.7 111
Show 18465+0420 TDT1050 134 0.5 111
Show 18418+0052 HJ 865 114 20.4 112
Show 18379+0352 KPP 421 99 3.9 118
Show 18424+0040 HDZ 2 110 11.8 120
Show 18360+0234 STN 43 28 10.1 120
Show 18413+0433 J 2143 319 15.2 123
Show 18357+0239 TDT 950 262 0.5 123
Show 18425+0439 HJ 866 AB 83 17.7 124
Show 18425+0439 HJ 866 AC 322 12.7 124
Show 18382+0410 TDT 968 35 0.4 127
Show 18436+0444 A 357 71 0.6 127
Show 18454+0444 BAL2935 161 5.8 129
Show 18526+0212 TDS 951 113 0.7 133
Show 18468+0443 TDT1051 168 1.6 133
Show 18514+0351 DOO 72 52 31.5 135
Show 18462+0019 TDT1044 4 0.5 143
Show 18437-0014 A 858 AB 245 0.9 144
Show 18437-0014 AOT 74 AB,C 303 25.5 144

 
 
WDS 18439+0237 : COMPONENTS
 
 
  A
B pa=24.8°
sep=0.28"
 
 
18439+0237 A
 
 
Componente originario normalizzato AB Name HD 173174 Coord arcsec 2000 184355.78+023716.6 Mag 9.43
Spectral class G0 (yellow) PmRA -33.00 PmDE -60.0 SAO 123858
HD 173174 GC 25622 ADS 11617 DM BD+02 3668
SAO
SAO 123858 DelFlag RA1950 PmRA1950 -0.0019
DE1950 PmDE1950 -0.069 Vmag 7.7 SpType G0
Double code Source 70 CatNum 25622 DM BD+02 3668
DMcomp BDsup HD 173174 M HD 0
GC 25622 RA1950rad 4.89311112 DE1950rad 0.04486221 PmRA2000 -0.0017
PmDE2000 -0.07
CCDM
Ccdm 18439+0237 RComp Comp A Note1
Note2 Discov num DRAs 1.81 DDEs 15.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.2 Sp G0 PmNote *
PmRA -22 PmDE -84 Dm number +02 3668 Cat1 BD
Name2 +02 2302 Cat2 AGK2/3 HD 173174 M HD
ADS BDS A11617 M ADS BDS N IDS IDS 18389N0231A
HIC 91889
 
 
18439+0237 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184355.79+023716.9 Mag 8.32 PmRA -33.00
PmDE -60.0 HIP 91889 Tycho2 0451-01023-1 BD BD+02 3668
Calc delta mag 1.11 Calc coord yes
Tycho2
Tycho2 0451-01023-1 Pflag RAmdeg 280.98249946 DEmdeg 2.62132502
PmRA -32.5 PmDE -60.3 E RAmdeg 5 E DEmdeg 6
E pmRA 1.3 E pmDE 1.2 EpRAm 1991.46 EpDEm 1991.38
Num 10 Q RAmdeg 0.8 Q DEmdeg 1.2 Q pmRA 0.8
Q pmDE 1.2 BTmag 8.700 E BTmag 0.017 VTmag 8.036
E VTmag 0.012 Prox 999 TYC T HIP 91889
CCDM AB RAdeg 280.98257361 DEdeg 2.62146333 EpRA 1990 1.78
EpDE 1990 1.75 E RAdeg 5.3 E DEdeg 6.2 Posflg P
Corr -0.2
Hipparcos
Catalog H HIP 91889 Proxy H RAhms 18 43 55.81
DEdms +02 37 17.3 Vmag 7.95 VarFlag R Vmag H
RAdeg 280.983 DEdeg 2.62146 AstroRef A Plx 9.2
CCDM 18439+0237 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 63 Rho 0.404 HD 173174 BD BD+02 3668
CD CP Dm number +02 3668 VIred 0.7
SpType G0 R SpType Coord arcsec 2000 184355.81+023717.3
Hipparcos 2
HIP 91889 Sn 15 So 3 Nc 2
RArad 4.9040706249 DErad 0.0457530768 Plx 11.7 PmRA -31.98
PmDE -59.62 E RArad 0.98 E DErad 0.76 E Plx 1.16
E pmRA 1.27 E pmDE 1.03 Hpmag 8.0803 E Hpmag 0.0013
SHp 0.014 VA 0 BV 0.622 E BV 0.012
VI 0.69
CCDM
Ccdm 18439+0237 RComp Comp B Note1
Note2 Discov num STF2369 DRAs DDEs
R dRAs Year 1959 Theta 086 Rho 0.6
Obs 99 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11617 M ADS BDS N IDS IDS 18389N0231B
HIC 91889