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Current system
16309+0159
STF 2055 AB
Marfik


Nearby doubles
21' : 16304+0140
SKF1592

40' : 16284+0147
HEI 795

47' : 16330+0233
A 2234

52' : 16313+0108
BAL1473

53' : 16293+0246
BAL1917

62' : 16312+0057
BAL1472

67' : 16298+0303
BAL2415

68' : 16339+0106
BAL1474

71' : 16263+0211
LDS5851AB

71' : 16264+0216
ARN 74

73' : 16330+0053
KPP2569

75' : 16265+0234
BAL1916

77' : 16269+0113
BAL1471

79' : 16311+0318
BAL2416

80' : 16269+0251
GWP2636

82' : 16329+0315
LEP 79AB

84' : 16321+0321
BAL2417

84' : 16308-0035
CVR 826

85' : 16269+0101
A 2233

85' : 16352+0255
BAL2418

88' : 16331+0038
TDS9967

89' : 16347+0051
KPP3306

90' : 16363+0238
BAL1918

99' : 16326+0024
TOB 260

102' : 16265-0042
BVD 118

103' : 16354+0317
BAL2419



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Binary Systems
Triple Systems
Quadruple Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

16309+0159 STF 2055 AB (Marfik)

 
 
16h 30m 54.84s +01° 59' 02.8" P.A. 46.00 sep 1.3 mag 4.15,5.15 Sp A0V+A0V dist. 53.08 pc (173.15 l.y.)
 
 
Coord 2000 16309+0159 Discov num STF2055 Comp AB Coord arcsec 2000 16 30 54.84 +01 59 02.8
Date first 1825 Date last 2023 Obs 817
Pa first 332 Pa last 45.9 P.A. Now (θ) 49.7°
Sep first 0.8 Sep last 1.3 Sep. Now (ρ) 1.332"
Mag pri 4.15 Mag sec 5.15 delta mag (ΔM) 1 Spectral class A0V+A0V (white/white)
Pri motion ra -021 Sec motion ra -021
Pri motion dec -088 Sec motion dec -088
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
16309+0159 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Marfik 121658 16 30 55 +01 59 03 STF 2055 AB 2023 817 46 1.3 4.15 5.15 1.00 Y <===
Show Lam Oph 121658 16 30 55 +01 59 03 STF 2055 AB,C 2013 10 169 119.6 3.82 11.84 8.02
Show Marfik 121658 16 30 55 +01 59 03 STF 2055 AD 2020 9 247 308.1 4.15 10.93 6.78
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Marfik Var name NSV7784 Oph Constellation Ophiuchus SAO 121658
HIP 80883 Tycho2 0386-02062-1 Gaia DR2 4432032213656434176 HD 148857
HR 6149 GC 22203 ADS 10087 BD BD+02 3118
Bayer Lambda Ophiuchi Bayer name Lam Oph Flamsteed 10 Ophiuchi Flamsteed name 10 Oph
Distance 53.08 Distance ly 173.15 Bayer greek λ Oph
Other names MARSIK, MIRFAK, Marfic
Meaning wrist, elbow
 
 
ORBITAL ELEMENTS
 
 
Period (P)129.0034y± 0.7176 Periastron (T)1939.4892y± 0.1387 Semi-major axis (a)0.89777a± 0.00774
Eccentricity (e)0.61536± 0.0051 Inclination (i)23.761°± 1.786 Longitude of periastron (ω)148.772°± 5.235
Node (Ω)61.239°± 4.938 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 29.0 1.408
2001 29.8 1.411
2002 30.6 1.414
2003 31.4 1.416
2004 32.2 1.418
2005 33.0 1.420
2006 33.8 1.420
2007 34.6 1.421
2008 35.4 1.420
2009 36.2 1.420
2010 37.1 1.418
2011 37.9 1.416
2012 38.7 1.414
2013 39.5 1.411
2014 40.3 1.408
2015 41.1 1.404
2016 41.9 1.399
2017 42.8 1.394
2018 43.6 1.388
2019 44.5 1.382
2020 45.3 1.375
2021 46.2 1.368
2022 47.1 1.360
2023 47.9 1.351
2024 48.8 1.342
2025 49.7 1.332
2026 50.7 1.322
2027 51.6 1.311
2028 52.5 1.299
2029 53.5 1.287
2030 54.5 1.274
2031 55.5 1.260
2032 56.6 1.246
2033 57.6 1.231
2034 58.7 1.215
2035 59.8 1.199
2036 61.0 1.182
2037 62.1 1.164
2038 63.3 1.145
2039 64.6 1.126
2040 65.9 1.105
2041 67.3 1.084
2042 68.7 1.063
2043 70.1 1.040
2044 71.7 1.016
2045 73.3 0.992
2046 75.0 0.967
2047 76.8 0.940
2048 78.7 0.913
2049 80.7 0.885
2050 82.8 0.856


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds16309%2B0159b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 16309+0159 STF 2055 AB (Marfik) : NOTES
 
 
discov_num notes refcode
STF2055 lam Oph = Marfik. RV possibly variable.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Spectral types and masses of components assigned by ten Brummelaar et TtB2000
al. (2000) based on adaptive optics.
AB: H 1 83. MEv2010
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 6.77 +/- 1.92, 4.88, and 4.48 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019
Izm2019
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
TtB2000 Ac j ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., 2000AJ....119.2403T
TtB2000 Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr.
TtB2000 AJ 119, 2403, 2000 (magnitude differences from Mt. Wilson AO)
 
 
DISCOVERER
 
 
discov author
BAZ Baize, P.
IZM Izmailov, I.S., Khovricheva, M.L., Khovrichev, M. Yu., Kiyaeva, O.V., Khrutskaya,
IZM E.V., Romanenko, L.G., Grosheva, E.A., Maslennikov, K.L. & Kalinichenko, O.A.
TTB ten Brummelaar, T.A., Mason, B.D., Bagnuolo, W.G., Jr., Hartkopf, W.,
TTB McAlister, H.A., & Turner, N.H.
TTB ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr.,
TTB Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
16309+0159 STF2055 AB 2008 775 36 1.4 4.15 5.15 A0V+A0V +02 3118 NOD 163054.84+015902.8
16309+0159 STF2055 AB 2009 780 36 1.4 4.15 5.15 A0V+A0V +02 3118 NOD 163054.84+015902.8
16309+0159 STF2055 AB 2010 792 37 1.4 4.15 5.15 A0V+A0V +02 3118 NOD 163054.84+015902.8
16309+0159 STF2055 AB 2012 796 39 1.4 4.15 5.15 A0V A0V +02 3118 NOD 163054.84+015902.8
16309+0159 STF2055 AB 2013 802 40 1.5 4.15 5.15 A0V A0V +02 3118 NOD 163054.84+015902.8
16309+0159 STF2055 AB 2014 786 41 1.6 4.15 5.15 A0V A0V +02 3118 NOD 163054.84+015902.8
16309+0159 STF2055 AB 2015 788 42 1.6 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8
16309+0159 STF2055 AB 2016 792 44 1.4 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8
16309+0159 STF2055 AB 2017 795 44 1.5 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8
16309+0159 STF2055 AB 2018 797 44 1.4 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8
16309+0159 STF2055 AB 2019 802 44 1.4 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8
16309+0159 STF2055 AB 2022 807 48 1.3 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8
16309+0159 STF2055 AB 2023 817 46 1.3 4.15 5.15 A0V+A0V +02 3118 NO 163054.84+015902.8

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

 
 
WDS 16309+0159 STF 2055 AB (Marfik) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest seeing notes
Show 22/06/05 oldscope difficut separated      

 
 
WDS 16309+0159 STF 2055 AB (Marfik) : MEASURES
 
 
No records found.

 
 
WDS 16309+0159 (Marfik) : VIRTUAL EYEPIECE
 
 

16309+0159 STF2055A mag 4.15 Sp A0V 16309+0159 STF2055B sep 1.3 P.A. 45.90 mag 5.15 Sp A0V 16309+0159 STF2055C sep 119.6 P.A. 169.00 mag 11.84 Sp A0V 16309+0159 STF2055D sep 308.1 P.A. 247.00 mag 10.93 Sp A0V 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 16309+0159 (Marfik) : ALADIN DSS IMAGE @ 16h 30m 54.84s +01° 59' 02.8"
 
 
 
 
WDS 16309+0159 STF 2055 AB (Marfik) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

16309+0159 STF2055AB (Marfik) distance=0' 16304+0140 SKF1592 distance=21' 16284+0147 HEI 795 distance=40' 16330+0233 A 2234 distance=47' 16313+0108 BAL1473 distance=52' 16293+0246 BAL1917 distance=53' 16312+0057 BAL1472 distance=62' 16298+0303 BAL2415 distance=67' 16339+0106 BAL1474 distance=68' 16263+0211 LDS5851AB distance=71' 16263+0211 BAL1915AC distance=71' 16264+0216 ARN 74 distance=71' 16330+0053 KPP2569 distance=73' 16265+0234 BAL1916 distance=75' 16269+0113 BAL1471 distance=77' 16311+0318 BAL2416 distance=79' 16269+0251 GWP2636 distance=80' 16329+0315 DAM 649BC distance=80' 16329+0315 LEP 79AB distance=82' 16329+0315 DSG 7Aa,Ab distance=82' 16329+0315 DSG 7Aa,Ac distance=82' 16321+0321 BAL2417 distance=84' 16308-0035 CVR 826 distance=84' 16269+0101 A 2233 distance=85' 16352+0255 BAL2418 distance=85' 16331+0038 TDS9967 distance=88' 16347+0051 KPP3306 distance=89' 16363+0238 BAL1918 distance=90' 16326+0024 TOB 260 distance=99' 16265-0042 BVD 118 distance=102' 16354+0317 BAL2419 distance=103' 16260+0312 BAL2414AB distance=104' 16275+0029 BAL1181 distance=104' 16269-0034 SKF1411 distance=105' 16292+0015 GKM9360Ba,Bb distance=107' 16291+0015 GRV 929 distance=108' 16323+0012 HDO 308 distance=110' 16381+0139 AG 204 distance=110' 16325+0012 DAM 369 distance=111' 16351+0331 TDS9979 distance=112' 16235+0213 STF2038 distance=112' 16323+0009 BU 9013AB distance=112' 16323+0009 BU 9013BC distance=113' 16387+0218 BAL1919 distance=118' 16368+0320 GWP2647 distance=120' 16360-0025 TOK 175 distance=121' 16390+0204 TDS 828 distance=122' 16257+0337 BAL2413 distance=126' 16354-0004 BAL1183 distance=133' 16231-0051 A 692 distance=136' 16371+0015 RST5414 distance=140' 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 Marfik 16309+0159 STF2055 AB 46 1.3 0
Show Marfik 16309+0159 STF2055 AD 247 308.1 0
Show 16309+0159 STF2055 AB,C 169 119.6 0
Show 16304+0140 SKF1592 220 63.2 21
Show 16284+0147 HEI 795 329 1.0 40
Show 16330+0233 A 2234 119 1.0 47
Show 16313+0108 BAL1473 84 2.1 52
Show 16293+0246 BAL1917 209 8.4 53
Show 16312+0057 BAL1472 210 6.4 62
Show 16298+0303 BAL2415 195 9.2 67
Show 16339+0106 BAL1474 283 6.9 68
Show 16263+0211 LDS5851 AB 320 9.8 71
Show 16263+0211 BAL1915 AC 8 51.3 71
Show 16264+0216 ARN 74 34 65.1 71
Show 16330+0053 KPP2569 262 23.2 73
Show 16265+0234 BAL1916 205 11.2 75
Show 16269+0113 BAL1471 263 16.6 77
Show 16311+0318 BAL2416 224 8.7 79
Show 16269+0251 GWP2636 285 13.4 80
Show 16329+0315 DAM 649 BC 137 6.4 80
Show 16329+0315 LEP 79 AB 138 252.0 82
Show 16329+0315 DSG 7 Aa,Ab 16 0.0 82
Show 16329+0315 DSG 7 Aa,Ac 269 0.2 82
Show 16321+0321 BAL2417 358 3.5 84
Show 16308-0035 CVR 826 301 26.0 84
Show 16269+0101 A 2233 28 2.7 85
Show 16352+0255 BAL2418 188 11.9 85
Show 16331+0038 TDS9967 73 0.4 88
Show 16347+0051 KPP3306 317 0.8 89
Show 16363+0238 BAL1918 7 15.5 90
Show 16326+0024 TOB 260 268 27.4 99
Show 16265-0042 BVD 118 239 21.8 102
Show 16354+0317 BAL2419 324 16.9 103
Show 16260+0312 BAL2414 AB 128 4.0 104
Show 16275+0029 BAL1181 207 4.9 104
Show 16269-0034 SKF1411 341 0.7 105
Show 16292+0015 GKM9360 Ba,Bb 257 0.2 107
Show 16291+0015 GRV 929 70 69.7 108
Show 16323+0012 HDO 308 305 7.0 110
Show 16381+0139 AG 204 15 4.3 110
Show 16325+0012 DAM 369 187 10.4 111
Show 16351+0331 TDS9979 264 0.5 112
Show 16235+0213 STF2038 213 17.6 112
Show 16323+0009 BU 9013 AB 114 10.0 112
Show 16323+0009 BU 9013 BC 116 6.9 113
Show 16387+0218 BAL1919 159 9.2 118
Show 16368+0320 GWP2647 319 25.5 120
Show 16360-0025 TOK 175 275 16.7 121
Show 16390+0204 TDS 828 274 1.1 122
Show 16257+0337 BAL2413 86 5.4 126
Show 16354-0004 BAL1183 226 13.8 133

 
 
WDS 16309+0159 : COMPONENTS
 
 
  A B C
B pa=45.9°
sep=1.30"
 
C pa=169.0°
sep=119.64"
pa=169.5°
sep=120.35"
 
D pa=247.0°
sep=308.11"
pa=246.9°
sep=309.33"
pa=269.4°
sep=306.47"
 
 
16309+0159 A
 
 
Common name Marfik Meaning wrist, elbow Other names MARSIK, MIRFAK, Marfic Coord arcsec 2000 163054.84+015902.8
Mag 4.15 Spectral class A0V (white) PmRA -21.00 PmDE -88.0
SAO 121658 HIP 80883 Tycho2 0386-02062-1 HD 148857
HR 6149 GC 22203 BD BD+02 3118 Bayer Lambda Ophiuchi
Bayer name lam Oph Flamsteed 10 Ophiuchi Flamsteed name 10 Oph
Tycho2
Tycho2 0386-02062-1 Pflag P RAmdeg 247.72847810 DEmdeg 1.98395581
PmRA -21.3 PmDE -87.7 E RAmdeg 3 E DEmdeg 4
E pmRA 1.6 E pmDE 1.5 EpRAm 1991.58 EpDEm 1991.33
Num 4 Q RAmdeg 1.0 Q DEmdeg 2.2 Q pmRA 1.0
Q pmDE 2.3 BTmag 4.190 E BTmag 0.014 VTmag 4.147
E VTmag 0.009 Prox 14 TYC T HIP 80883
CCDM A RAdeg 247.72850056 DEdeg 1.98409722 EpRA 1990 1.63
EpDE 1990 1.43 E RAdeg 3.4 E DEdeg 3.7 Posflg D
Corr 0.1
SAO
SAO 121658 DelFlag RA1950 PmRA1950 -0.002
DE1950 PmDE1950 -0.075 Vmag 3.9 SpType A0
Double code Source 71 CatNum 617 DM BD+02 3118
DMcomp BDsup HD 148857 M HD 0
GC 22203 RA1950rad 4.31266063 DE1950rad 0.0365116 PmRA2000 -0.0018
PmDE2000 -0.073
Hipparcos
Catalog H HIP 80883 Proxy H RAhms 16 30 54.84
DEdms +01 59 02.8 Vmag 3.82 VarFlag R Vmag G
RAdeg 247.729 DEdeg 1.9841 AstroRef A Plx 19.63
CCDM -31.37 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 21 Rho 1.35 HD BD BD+02 3118
CD CP Dm number +02 3118 VIred 0.03
SpType A2V R SpType Coord arcsec 2000 163054.84+015902.8
Hipparcos 2
HIP 80883 Sn 15 So 3 Nc 2
RArad 4.3236780648 DErad 0.034629094 Plx 18.84 PmRA -30.98
PmDE -73.42 E RArad 0.58 E DErad 0.46 E Plx 0.55
E pmRA 0.61 E pmDE 0.58 Hpmag E Hpmag 0.0005
SHp 0.004 VA 0 BV 0.022 E BV 0.014
VI 0.03
CCDM
Ccdm 16309+0159 RComp Comp A Note1
Note2 Discov num DRAs 0.79 DDEs 2.1
R dRAs 10 Year Theta Rho
Obs 4 Vmag 3.9 Sp A0 PmNote *
PmRA -40 PmDE -80 Dm number +02 3118 Cat1 BD
Name2 Cat2 HD 148857 M HD
ADS BDS A10087 M ADS BDS N IDS IDS 16259N0212A
HIC 80883
 
 
16309+0159 B
 
 
Coord arcsec 2000 163054.90+015903.7 Mag 5.15 Spectral class A0V (white) PmRA -21.00
PmDE -88.0 Delta magnitude 1 Coordinate calculated yes
CCDM
Ccdm 16309+0159 RComp Comp B Note1 *
Note2 Discov num STF2055 DRAs DDEs
R dRAs Year 1825 Theta Rho
Obs 99 Vmag 6.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10087 M ADS BDS N IDS IDS 16259N0212B
HIC 80883
 
 
16309+0159 C
 
 
Coord arcsec 2000 163056.36+015705.4 Mag 11.84 Spectral class A0V (white) PmRA -31.00
PmDE -77.0 Delta magnitude 7.69 Coordinate calculated yes
CCDM
Ccdm 16309+0159 RComp Comp C Note1
Note2 Discov num STF2055 DRAs DDEs
R dRAs Year 1960 Theta 170 Rho 119.2
Obs 4 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10087 M ADS BDS N IDS IDS 16259N0212C
HIC
 
 
16309+0159 D
 
 
Coord arcsec 2000 163035.92+015702.4 Mag 10.93 Spectral class A0V (white) PmRA -4.00
PmDE 1.0 Delta magnitude 6.78 Coordinate calculated yes
CCDM
Ccdm 16309+0159 RComp Comp D Note1
Note2 Discov num STF2055 DRAs DDEs
R dRAs Year 1918 Theta 246 Rho 313.8
Obs 2 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10087 M ADS BDS N IDS IDS 16259N0212D
HIC