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Current system
17400-0038
BU 631
HD 160438


Nearby doubles
12' : 17407-0043
A 1160

27' : 17394+0103
GIC 147

34' : 17397-0003
J 2509

40' : 17417+0109
A 2249

45' : 17417+0115
GWP2729

54' : 17414+0127
LDS1000

66' : 17358+0100
STF2186

67' : 17364-0000
BAL1188AB

69' : 17377+0138
GWP2727

72' : 17356+0107
SKF 919

73' : 17351-0036
HDS2484AB

76' : 17349-0044
BAL 891AB

77' : 17448-0027
RST5093

80' : 17349+0102
DOO 67

83' : 17454-0032
J 516

85' : 17344+0032
RST5438

85' : 17391+0202
SHJ 251AB

93' : 17348+0130
J 2507

106' : 17464+0122
ORL 11

106' : 17362+0207
TDT 430

106' : 17459+0135
ORL 9

107' : 17376-0102
BU 960

107' : 17398+0225
OSO 83AB

112' : 17391+0231
BAL1941

118' : 17397-0119
A 1159AB

120' : 17320-0042
TDT 399



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.

17400-0038 BU 631 (HD 160438)

 
 
17h 39m 57.70s -00° 38' 21.2" P.A. 81.00 sep 0.3 mag 7.23,7.40 Sp B9IV dist. 245.7 pc (801.47 l.y.)
 
 
Coord 2000 17400-0038 Discov num BU  631 Comp Coord arcsec 2000 17 39 57.70 -00 38 21.2
Date first 1878 Date last 2018 Obs 127
Pa first 70 Pa last 80.8 P.A. Now (θ) 74.6°
Sep first 0.4 Sep last 0.306 Sep. Now (ρ) 0.335"
Mag pri 7.23 Mag sec 7.40 delta mag (ΔM) 0.17 Spectral class B9IV (blue-white)
Pri motion ra -008 Sec motion ra
Pri motion dec -016 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 160438 Constellation Ophiuchus SAO 141795 HIP 86463
Tycho2 5081-02482-1 HD 160438 GC 23947 ADS 10696
BD BD-00 3338 Distance 245.7 Distance ly 801.47
 
 
ORBITAL ELEMENTS
 
 
Period (P)147.5y Periastron (T)1978.3y Semi-major axis (a)0.217a
Eccentricity (e)0.78 Inclination (i)162.5° Longitude of periastron (ω)146°
Node (Ω)26.8° Notesn ReferenceHei1996a
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 94.2 0.229
2001 93.0 0.235
2002 91.8 0.241
2003 90.6 0.247
2004 89.5 0.253
2005 88.5 0.259
2006 87.5 0.264
2007 86.5 0.269
2008 85.6 0.275
2009 84.7 0.280
2010 83.8 0.284
2011 83.0 0.289
2012 82.2 0.294
2013 81.4 0.298
2014 80.6 0.302
2015 79.9 0.306
2016 79.2 0.310
2017 78.5 0.314
2018 77.8 0.318
2019 77.1 0.322
2020 76.5 0.325
2021 75.8 0.329
2022 75.2 0.332
2023 74.6 0.335
2024 74.0 0.338
2025 73.4 0.341
2026 72.8 0.344
2027 72.2 0.346
2028 71.6 0.349
2029 71.1 0.352
2030 70.5 0.354


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


 
  


wds17400-0038c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17400-0038 BU 631 (HD 160438) : NOTES
 
 
discov_num notes refcode
BU 631 Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 6.97 +/- 4.66, 4.77, and 2.82 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Hei1996a Ma j Heintz, W.D. 1996ApJS..105..475H
Hei1996a +orb ApJS 105, 475, 1996
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17400-0038 BU 631 2006 117 89 0.2 7.23 7.40 B9IV NO 173957.70-003821.2
17400-0038 BU 631 2009 120 87 0.3 7.23 7.40 B9IV NO 173957.70-003821.2
17400-0038 BU 631 2017 124 88 0.3 7.23 7.40 B9IV NO 173957.70-003821.2
17400-0038 BU 631 2018 125 81 0.3 7.23 7.40 B9IV NO 173957.70-003821.2

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

 
 
WDS 17400-0038 BU 631 (HD 160438) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17400-0038 BU 631 (HD 160438) : MEASURES
 
 
No records found.

 
 
WDS 17400-0038 (HD 160438) : VIRTUAL EYEPIECE
 
 

17400-0038 BU 631A mag 7.23 Sp B9IV 17400-0038 BU 631B sep 0.3 P.A. 80.80 mag 7.4 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 17400-0038 (HD 160438) : ALADIN DSS IMAGE @ 17h 39m 57.70s -00° 38' 21.2"
 
 
 
 
WDS 17400-0038 BU 631 (HD 160438) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17400-0038 BU 631 distance=1' 17407-0043 A 1160 distance=12' 17394+0103 GIC 147 distance=27' 17397-0003 J 2509 distance=34' 17417+0109 A 2249 distance=40' 17417+0115 GWP2729 distance=45' 17414+0127 LDS1000 distance=54' 17358+0100 STF2186 distance=66' 17364-0000 BAL1188AB distance=67' 17364-0000 GWP2725AC distance=67' 17377+0138 GWP2727 distance=69' 17356+0107 SKF 919 distance=72' 17351-0036 HDS2484AB distance=73' 17351-0036 SKF 918AC distance=73' 17349-0044 BAL 891AB distance=76' 17349-0044 BAL 891AC distance=76' 17349-0044 BAL 891BC distance=76' 17448-0027 RST5093 distance=77' 17349+0102 DOO 67 distance=80' 17454-0032 J 516 distance=83' 17344+0032 RST5438 distance=85' 17391+0202 SHJ 251AB distance=85' 17391+0202 SHJ 251AC distance=85' 17391+0202 SHJ 251BC distance=86' 17348+0130 J 2507 distance=93' 17464+0122 ORL 11 distance=106' 17362+0207 TDT 430 distance=106' 17459+0135 ORL 9 distance=106' 17376-0102 BU 960 distance=107' 17398+0225 OSO 83AB distance=107' 17398+0225 OSO 83AC distance=107' 17391+0231 BAL1941 distance=112' 17397-0119 A 1159AB distance=118' 17397-0119 GII 250Aa,Ab distance=118' 17320-0042 TDT 399 distance=120' 17320+0047 BAL1187 distance=120' 17386-0121 A 2986 distance=122' 17319-0025 GWP2720 distance=123' 17390+0240 WSI 88 distance=123' 17463+0157 ORL 10 distance=123' 17318-0055 RST5088 distance=124' 17483+0036 BAL1189 distance=125' 17316-0023 GWP2719 distance=127' 17479+0121 TDT 510 distance=127' 17352+0228 TDS 874 distance=131' 17418+0249 BAL1942 distance=134' 17481+0135 A 2185 distance=134' 17425+0247 UC 3386 distance=135' 17487+0110 STF2221 distance=136' 17446+0235 STF2202AB distance=136' 17446+0235 STF2202BC distance=136' 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 17400-0038 BU 631 81 0.3 1
Show 17407-0043 A 1160 16 1.7 12
Show 17394+0103 GIC 147 114 7.4 27
Show 17397-0003 J 2509 89 2.8 34
Show 17417+0109 A 2249 303 1.5 40
Show 17417+0115 GWP2729 81 5.3 45
Show 17414+0127 LDS1000 148 13.0 54
Show 17358+0100 STF2186 78 3.0 66
Show 17364-0000 BAL1188 AB 117 7.7 67
Show 17364-0000 GWP2725 AC 254 177.0 67
Show 17377+0138 GWP2727 345 48.8 69
Show 17356+0107 SKF 919 2 14.5 72
Show 17351-0036 HDS2484 AB 198 0.8 73
Show 17351-0036 SKF 918 AC 308 3.2 73
Show 17349-0044 BAL 891 AB 204 20.0 76
Show 17349-0044 BAL 891 AC 194 18.5 76
Show 17349-0044 BAL 891 BC 85 3.8 76
Show 17448-0027 RST5093 54 1.7 77
Show 17349+0102 DOO 67 117 46.0 80
Show 17454-0032 J 516 239 3.3 83
Show 17344+0032 RST5438 76 1.4 85
Show 17391+0202 SHJ 251 AB 328 111.3 85
Show 17391+0202 SHJ 251 AC 15 133.1 85
Show 17391+0202 SHJ 251 BC 69 99.8 86
Show 17348+0130 J 2507 234 1.3 93
Show 17464+0122 ORL 11 12 0.6 106
Show 17362+0207 TDT 430 85 0.8 106
Show 17459+0135 ORL 9 349 0.5 106
Show 17376-0102 BU 960 292 3.0 107
Show 17398+0225 OSO 83 AB 273 12.7 107
Show 17398+0225 OSO 83 AC 222 12.3 107
Show 17391+0231 BAL1941 50 15.1 112
Show 17397-0119 A 1159 AB 284 2.4 118
Show 17397-0119 GII 250 Aa,Ab 136 0.2 118
Show 17320-0042 TDT 399 134 0.4 120
Show 17320+0047 BAL1187 272 3.6 120
Show 17386-0121 A 2986 64 0.9 122
Show 17319-0025 GWP2720 302 191.9 123
Show 17390+0240 WSI 88 202 0.1 123
Show 17463+0157 ORL 10 265 0.3 123
Show 17318-0055 RST5088 58 1.2 124
Show 17483+0036 BAL1189 148 4.0 125
Show 17316-0023 GWP2719 111 48.2 127
Show 17479+0121 TDT 510 226 6.2 127
Show 17352+0228 TDS 874 317 1.1 131
Show 17418+0249 BAL1942 187 5.0 134
Show 17481+0135 A 2185 177 0.7 134
Show 17425+0247 UC 3386 270 48.3 135
Show 17487+0110 STF2221 76 19.5 136
Show 17446+0235 STF2202 AB 92 20.8 136
Show 17446+0235 STF2202 BC 28 93.8 136

 
 
WDS 17400-0038 : COMPONENTS
 
 
  A
B pa=80.8°
sep=0.31"
 
 
17400-0038 A
 
 
Componente originario normalizzato AB Name HD 160438 Coord arcsec 2000 173957.70-003821.2 Mag 7.23
Spectral class B9IV (blue-white) PmRA -8.00 PmDE -16.0 SAO 141795
HIP 86463 Tycho2 5081-02482-1 HD 160438 GC 23947
BD BD-00 3338
Tycho2
Tycho2 5081-02482-1 Pflag RAmdeg 264.99040977 DEmdeg -0.63924715
PmRA -6.9 PmDE -13.2 E RAmdeg 4 E DEmdeg 4
E pmRA 1.0 E pmDE 1.1 EpRAm 1991.40 EpDEm 1991.39
Num 16 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 0.9
Q pmDE 1.3 BTmag 6.661 E BTmag 0.015 VTmag 6.528
E VTmag 0.010 Prox 999 TYC T HIP 86463
CCDM AB RAdeg 264.99042556 DEdeg -0.63921639 EpRA 1990 1.78
EpDE 1990 1.61 E RAdeg 3.9 E DEdeg 4.3 Posflg P
Corr -0.2
SAO
SAO 141795 DelFlag RA1950 PmRA1950 -0.0002
DE1950 PmDE1950 -0.012 Vmag 6.7 SpType A0
Double code Source 70 CatNum 23947 DM BD-00 3338
DMcomp BDsup HD 160438 M HD 0
GC 23947 RA1950rad 4.61372143 DE1950rad -0.01070157 PmRA2000 0
PmDE2000 -0.011
Hipparcos
Catalog H HIP 86463 Proxy H RAhms 17 39 57.70
DEdms -00 38 21.2 Vmag 6.51 VarFlag R Vmag H
RAdeg 264.99 DEdeg -0.639213 AstroRef * Plx 3.04
CCDM 17400-0038 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 110 Rho 0.159 HD 160438 BD BD-00 3338
CD CP Dm number -00 3338 VIred 0.12
SpType A0 R SpType Coord arcsec 2000 173957.70-003821.2
Hipparcos 2
HIP 86463 Sn 55 So 3 Nc 2
RArad 4.6249554262 DErad -0.0111563732 Plx 4.07 PmRA -6.94
PmDE -13.35 E RArad 0.66 E DErad 0.41 E Plx 0.83
E pmRA 0.85 E pmDE 0.41 Hpmag 6.5588 E Hpmag 0.0011
SHp 0.006 VA 0 BV 0.122 E BV 0.007
VI 0.14
CCDM
Ccdm 17400-0038 RComp Comp A Note1
Note2 Discov num DRAs -2.30 DDEs -21.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.5 Sp A0 PmNote *
PmRA -9 PmDE -16 Dm number -00 3338 Cat1 BD
Name2 -00 2234 Cat2 AGK2/3 HD 160438 M HD
ADS BDS A10696 M ADS BDS N IDS IDS 17348S0035A
HIC 86463
 
 
17400-0038 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 173957.72+003821.2 Mag 7.4 Calc delta mag 0.17
Calc coord yes
CCDM
Ccdm 17400-0038 RComp Comp B Note1 *
Note2 Discov num BU 631 DRAs DDEs
R dRAs Year 1958 Theta 029 Rho 0.2
Obs 99 Vmag 7.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10696 M ADS BDS N IDS IDS 17348S0035B
HIC 86463