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Doubles in session


Current system
17121+4540
KUI 79 AB
HD 155876


Nearby doubles
9' : 17117+4533
DAM 975

45' : 17110+4457
DAM 955

53' : 17171+4540
DVG 2

57' : 17073+4604
COU1773

60' : 17178+4535
STF2152

67' : 17150+4441
TDT 288

68' : 17105+4645
A 1645

70' : 17153+4439
POP 131AB

71' : 17113+4650
DAM 968

74' : 17060+4616
TDT 212

78' : 17165+4642
KPP3314

78' : 17164+4643
HDS2442

86' : 17084+4656
SLE 80

98' : 17214+4552
BRT 343

100' : 17212+4609
KPP4035

100' : 17043+4445
COU1593

105' : 17109+4357
ES 1412

105' : 17023+4523
CVR1688

105' : 17089+4720
UC 3299

106' : 17198+4434
UC 3325

107' : 17051+4658
STT 323

108' : 17067+4408
SHN 218

111' : 17172+4404
KPP1440

112' : 17020+4507
GRV1224

115' : 17029+4643
BEM9010

117' : 17078+4727
A 1644



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.

17121+4540 KUI 79 AB (HD 155876)

 
 
17h 12m 07.78s +45° 39' 57.6" P.A. 289.00 sep 0.7 mag 10.02,10.25 Sp M3V dist. 5.98 pc (19.51 l.y.)
 
 
Coord 2000 17121+4540 Discov num KUI  79 Comp AB Coord arcsec 2000 17 12 07.78 +45 39 57.6
Date first 1934 Date last 2018 Obs 237
Pa first 229 Pa last 289.4 P.A. Now (θ) 242.2°
Sep first 1.1 Sep last 0.662 Sep. Now (ρ) 1.139"
Mag pri 10.02 Mag sec 10.25 delta mag (ΔM) 0.23 Spectral class M3V (red)
Pri motion ra +022 Sec motion ra
Pri motion dec -162 Sec motion dec
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
17121+4540 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 155876 17 12 08 +45 39 58 KUI 79 AB 2018 237 289 0.7 10.02 10.25 0.23 Y <===
Show 17 12 08 +45 39 58 KUI 79 AB,C 2013 6 343 157.4 9.52 13.30 3.78
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 155876 Constellation Hercules HIP 84140 Tycho2 3501-01952-1
HD 155876 GL Gl 661A BD BD+45 2505 Distance 5.98
Distance ly 19.51
 
 
ORBITAL ELEMENTS
 
 
Period (P)12.9551y± 0.0043 Periastron (T)57730d (2016.935y)± 1.9 Semi-major axis (a)776.12m± 1.01
Eccentricity (e)0.75167± 0.00062 Inclination (i)146.96°± 0.26 Longitude of periastron (ω)98.31°± 0.58
Node (Ω)159.18°± 0.67 Notesn ReferenceMnA2019
Equinox Last observation Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 220.8 1.055
2001 211.6 0.950
2002 199.4 0.788
2003 178.1 0.535
2004 52.3 0.164
2005 303.7 0.525
2006 281.0 0.757
2007 267.8 0.916
2008 258.1 1.027
2009 249.9 1.099
2010 242.5 1.138
2011 235.5 1.144
2012 228.3 1.116
2013 220.4 1.051
2014 211.2 0.944
2015 198.7 0.779
2016 176.6 0.520
2017 37.5 0.173
2018 302.3 0.538
2019 280.3 0.765
2020 267.3 0.922
2021 257.7 1.031
2022 249.6 1.102
2023 242.2 1.139
2024 235.1 1.143
2025 227.9 1.114
2026 220.0 1.048
2027 210.7 0.938
2028 198.0 0.769
2029 175.0 0.505
2030 24.6 0.187


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


 
  


wds17121%2B4540c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17121+4540 KUI 79 AB (HD 155876) : NOTES
 
 
discov_num notes refcode
KUI 79 Proper motion of A +257 -1565.
Poor Hipparcos solution. Sod1999
AB: Martin et al. (1998) derive component masses 0.379 +/- 0.035 and
0.369 +/- 0.035 Msun. Mig1998
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 0.56 +/- 0.05, 0.68, and 0.65 Msun, respectively. Mlk2012
AB,C: Rectilinear solution by Mason & Hartkopf (2016). Msn2016a
 
 
REFERENCES
 
 
refcode metd author reference
Mig1998 orb - Martin, Ch., Mignard, F., Hartkopf, W.I., & McAlister, H.A. 1998A&AS..133..149M
Mig1998 A&AS 133, 149, 1998
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
MnA2019 C j Mann, A.W., Dupuy, T., Kraus, A.L., Gaidos, E., Ansdell, M., Ireland, M., Rizzuto, 2019ApJ...871...63M
MnA2019 +orb A.C., Hung, C..-L., Dittmann, J., Factor, S., Feiden, G., Martinez, R.A.,
MnA2019 Ruiz-Rodriguez, D. & Chia Thao, P.
MnA2019 ApJ 871, 63, 2019
Msn2016a lin - Mason, B.D. & Hartkopf, W.I. 2016IAUDS.189....1M
Msn2016a Inf. Circ. 189, 1, 2016
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
DISCOVERER
 
 
idgroup discov author
1 KUI Kuiper, G.P., Schilt, van den Bos, W., and van Gent
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17121+4540 KUI 79 AB 2002 197 196 0.7 10.02 10.25 K5 NODP 171207.62+454011.4
17121+4540 KUI 79 AB 2007 198 264 1.0 10.02 10.25 K5 NODP 171207.62+454011.4
17121+4540 KUI 79 AB 2008 200 255 1.0 10.02 10.25 K5 NODP 171207.62+454011.4
17121+4540 KUI 79 AB 2010 202 240 1.1 10.02 10.25 K5 NODP 171207.62+454011.4
17121+4540 KUI 79 AB 2011 214 232 1.1 10.02 10.25 K5 NO P 171207.78+453957.6
17121+4540 KUI 79 AB 2016 220 146 0.3 10.02 10.25 K5 NO P 171207.78+453957.6
17121+4540 KUI 79 AB 2018 229 289 0.7 10.02 10.25 K5 NO P 171207.78+453957.6

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

 
 
WDS 17121+4540 KUI 79 AB (HD 155876) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17121+4540 KUI 79 AB (HD 155876) : MEASURES
 
 
No records found.

 
 
WDS 17121+4540 (HD 155876) : VIRTUAL EYEPIECE
 
 

17121+4540 KUI 79A mag 10.02 Sp M3V 17121+4540 KUI 79B sep 0.5 P.A. 296.70 mag 10.25 17121+4540 KUI 79C sep 153.9 P.A. 347.90 mag 13.3 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 17121+4540 (HD 155876) : ALADIN DSS IMAGE @ 17h 12m 07.78s +45° 39' 57.6"
 
 
 
 
WDS 17121+4540 KUI 79 AB (HD 155876) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17121+4540 KUI 79AB distance=0' 17117+4533 DAM 975 distance=9' 17110+4457 DAM 955 distance=45' 17171+4540 DVG 2 distance=53' 17073+4604 COU1773 distance=57' 17178+4535 STF2152 distance=60' 17150+4441 TDT 288 distance=67' 17105+4645 A 1645 distance=68' 17153+4439 POP 131AB distance=70' 17153+4439 POP 131AC distance=70' 17153+4439 POP 131AD distance=70' 17113+4650 DAM 968 distance=71' 17060+4616 TDT 212 distance=74' 17165+4642 KPP3314 distance=78' 17164+4643 HDS2442 distance=78' 17084+4656 SLE 80 distance=86' 17214+4552 BRT 343 distance=98' 17212+4609 KPP4035 distance=100' 17043+4445 COU1593 distance=100' 17109+4357 ES 1412 distance=105' 17023+4523 CVR1688 distance=105' 17089+4720 UC 3299 distance=105' 17198+4434 UC 3325 distance=106' 17051+4658 STT 323 distance=107' 17067+4408 SHN 218 distance=108' 17172+4404 KPP1440 distance=111' 17020+4507 GRV1224 distance=112' 17029+4643 BEM9010 distance=115' 17078+4727 A 1644 distance=117' 17190+4408 STF2154AB distance=118' 17190+4408 PRU 4AC distance=118' 17033+4427 SKF2733 distance=119' 17010+4616 ES 1255 distance=122' 17230+4625 UC 3334 distance=122' 17087+4738 HDS2420 distance=124' 17229+4440 CVR1699 distance=129' 16598+4553 KPP 385 distance=131' 17145+4331 HDS2437 distance=132' 17188+4734 UC 3321 distance=133' 16593+4613 CVR1686 distance=139' 17095+4324 CVR1695 distance=139' 17123+4315 BRT 342 distance=145' 17119+4316 KPP3313 distance=145' 17061+4329 WFC 186 distance=147' 17231+4713 TDT 330 distance=147' 17205+4739 A 2088 distance=148' 17091+4315 DAM 903 distance=149' 17259+4505 BVD 251 distance=150' 16579+4523 ES 1254 distance=150' 17149+4311 LDS4731 distance=151' 17229+4723 COU1777 distance=152' 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 17121+4540 KUI 79 AB 289 0.7
Show 17121+4540 KUI 79 AB,C 343 157.4
Show 17117+4533 DAM 975 198 2.7 9
Show 17110+4457 DAM 955 53 6.9 45
Show 17171+4540 DVG 2 256 22.6 53
Show 17073+4604 COU1773 23 0.9 57
Show 17178+4535 STF2152 237 2.0 60
Show 17150+4441 TDT 288 175 0.6 67
Show 17105+4645 A 1645 37 0.2 68
Show 17153+4439 POP 131 AB 137 3.8 70
Show 17153+4439 POP 131 AC 322 27.5 70
Show 17153+4439 POP 131 AD 102 20.1 70
Show 17113+4650 DAM 968 333 4.6 71
Show 17060+4616 TDT 212 132 1.2 74
Show 17165+4642 KPP3314 272 2.9 78
Show 17164+4643 HDS2442 52 0.6 78
Show 17084+4656 SLE 80 294 15.0 86
Show 17214+4552 BRT 343 213 4.5 98
Show 17212+4609 KPP4035 324 5.6 100
Show 17043+4445 COU1593 191 0.6 100
Show 17109+4357 ES 1412 134 3.6 105
Show 17023+4523 CVR1688 202 3.0 105
Show 17089+4720 UC 3299 315 55.9 105
Show 17198+4434 UC 3325 104 45.0 106
Show 17051+4658 STT 323 79 11.4 107
Show 17067+4408 SHN 218 37 0.4 108
Show 17172+4404 KPP1440 272 10.8 111
Show 17020+4507 GRV1224 350 11.0 112
Show 17029+4643 BEM9010 56 20.9 115
Show 17078+4727 A 1644 212 2.3 117
Show 17190+4408 STF2154 AB 253 2.0 118
Show 17190+4408 PRU 4 AC 182 0.9 118
Show 17033+4427 SKF2733 195 1.3 119
Show 17010+4616 ES 1255 49 7.7 122
Show 17230+4625 UC 3334 28 14.9 122
Show 17087+4738 HDS2420 276 0.2 124
Show 17229+4440 CVR1699 79 4.8 129
Show 16598+4553 KPP 385 219 4.8 131
Show 17145+4331 HDS2437 32 0.4 132
Show 17188+4734 UC 3321 216 30.6 133
Show 16593+4613 CVR1686 90 4.6 139
Show 17095+4324 CVR1695 90 3.8 139
Show 17123+4315 BRT 342 4 2.7 145
Show 17119+4316 KPP3313 188 2.1 145
Show 17061+4329 WFC 186 15 18.4 147
Show 17231+4713 TDT 330 52 0.9 147
Show 17205+4739 A 2088 8 0.3 148
Show 17091+4315 DAM 903 14 4.1 149
Show 17259+4505 BVD 251 216 17.2 150
Show 16579+4523 ES 1254 134 5.0 150
Show 17149+4311 LDS4731 61 14.8 151

 
 
WDS 17121+4540 : COMPONENTS
 
 
  A B
B pa=296.7°
sep=0.49"
 
C pa=347.9°
sep=153.87"
pa=348.0°
sep=153.57"
 
 
17121+4540 A
 
 
Name HD 155876 Coord arcsec 2000 171207.78+453957.6 Mag 10.02 Spectral class M3V (red)
PmRA 22.00 PmDE -162.0 HIP 84140 Tycho2 3501-01952-1
HD 155876 BD BD+45 2505
Tycho2
Tycho2 3501-01952-1 Pflag RAmdeg 258.03260683 DEmdeg 45.66606451
PmRA 252.6 PmDE -1571.8 E RAmdeg 20 E DEmdeg 18
E pmRA 1.2 E pmDE 1.2 EpRAm 1988.92 EpDEm 1989.28
Num 4 Q RAmdeg 2.5 Q DEmdeg 2.7 Q pmRA 2.6
Q pmDE 2.7 BTmag 11.223 E BTmag 0.059 VTmag 9.594
E VTmag 0.023 Prox 999 TYC T HIP 84140
CCDM AB RAdeg 258.03176222 DEdeg 45.66971056 EpRA 1990 1.59
EpDE 1990 1.65 E RAdeg 20.3 E DEdeg 18.1 Posflg P
Corr -0.1
Hipparcos
Catalog H HIP 84140 Proxy H RAhms 17 12 07.62
DEdms +45 40 11.4 Vmag 9.31 VarFlag R Vmag H
RAdeg 258.032 DEdeg 45.6698 AstroRef A Plx 158.17
CCDM 17121+4540 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual C M HIP AB
Theta 331 Rho 0.382 HD 155876 BD BD+45 2505
CD CP Dm number +45 2505 VIred 1.98
SpType K5 R SpType Coord arcsec 2000 171207.62+454011.4
Hipparcos 2
HIP 84140 Sn 15 So 3 Nc 2
RArad 4.5035036675 DErad 0.7970891228 Plx 167.29 PmRA 348.59
PmDE -1624.84 E RArad 4.01 E DErad 5.18 E Plx 5.02
E pmRA 5.68 E pmDE 6.8 Hpmag 9.3753 E Hpmag 0.0022
SHp 0.019 VA 0 BV 1.485 E BV 0.028
VI 1.98
CCDM
Ccdm 17121+4540 RComp Comp A Note1
Note2 Discov num DRAs 1.85 DDEs -1.0
R dRAs 10 Year Theta Rho
Obs 3 Vmag 10.1 Sp K5 PmNote *
PmRA 241 PmDE -1567 Dm number +45 2505 Cat1 BD
Name2 +45 1333 Cat2 AGK2/3 HD 155876 M HD
ADS BDS M ADS BDS N IDS IDS 17092N4551A
HIC 84140
 
 
17121+4540 B
 
 
Coord arcsec 2000 171207.74+453957.8 Mag 10.25 Calc delta mag 0.23 Calc coord yes
CCDM
Ccdm 17121+4540 RComp Comp B Note1 *
Note2 Discov num KUI 79 DRAs DDEs
R dRAs Year 1934 Theta Rho
Obs 99 Vmag 10.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17092N4551B
HIC 84140
 
 
17121+4540 C
 
 
Coord arcsec 2000 171204.69+454228.0 Mag 13.3 PmRA 0.00 PmDE 0.0
Calc delta mag 3.28 Calc coord yes
CCDM
Ccdm 17121+4540 RComp Comp C Note1
Note2 Discov num KUI 79 DRAs DDEs
R dRAs Year 1937 Theta 320 Rho 41.4
Obs 4 Vmag 14.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17092N4551C
HIC