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Doubles in session


Current system
11037+6145
BU 1077 AB
Dubhe


Nearby doubles
10' : 11050+6147
LDS2592

14' : 11023+6154
SLW 556

25' : 11020+6124
KPP 236

35' : 10588+6143
STF1491AB

44' : 11004+6222
CVR1332

45' : 11047+6230
KPP 671

49' : 11098+6123
ES 1906

54' : 11057+6237
STF1505AB

55' : 11003+6057
KPP 235

57' : 10558+6147
SLW 541

60' : 11092+6230
STF1512

64' : 10575+6100
TDS7573

75' : 11060+6032
TDS7661

79' : 11046+6304
BVD 317

80' : 11141+6217
LDS2594

83' : 11056+6024
TDS7657

92' : 11124+6037
HJ 3331

94' : 10508+6205
CBL 321

101' : 11178+6133
DAM1441

103' : 11158+6051
STI 723

104' : 11189+6131
LDS2597

104' : 11098+6320
H 4 106AB

106' : 11002+6003
TDS7600

110' : 11190+6131
DAM1442

111' : 11077+5958
PRB 3

112' : 11150+6029
TDS7757



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.

11037+6145 BU 1077 AB (Dubhe)

 
 
11h 03m 43.84s +61° 45' 04.0" P.A. 342.00 sep 0.8 mag 2.02,4.95 Sp G9III dist. 37.68 pc (122.91 l.y.)
 
 
Coord 2000 11037+6145 Discov num BU 1077 Comp AB Coord arcsec 2000 11 03 43.84 +61 45 04.0
Date first 1889 Date last 2017 Obs 83
Pa first 326 Pa last 342.3 P.A. Now (θ) 323.2°
Sep first 0.9 Sep last 0.806 Sep. Now (ρ) 0.819"
Mag pri 2.02 Mag sec 4.95 delta mag (ΔM) 2.93 Spectral class G9III (yellow)
Pri motion ra -119 Sec motion ra
Pri motion dec -067 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
11037+6145 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Dubhe 15384 11 03 44 +61 45 04 BU 1077 AB 2017 83 342 0.8 2.02 4.95 2.93 Y <===
Show 15384 11 03 44 +61 45 04 BU 1077 AC 2020 15 206 384.5 2.02 7.19 5.17
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Dubhe Var name NSV5070 UMa Constellation Ursa Major SAO 15384
HIP 54061 Tycho2 4146-01274-1 HD 95689 HR 4301
GC 15185 ADS 8035 BD BD+62 1161 Bayer Alpha Ursae Majoris
Bayer name Alp UMa Flamsteed 50 Ursae Majoris Flamsteed name 50 UMa FK5 417
Distance 37.68 Distance ly 122.91 Bayer greek α UMa
Other names DUBB, AK
Meaning Bear
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.448y± 0.11 Periastron (T)2002.17y± 0.094 Semi-major axis (a)0.59a± 0.026
Eccentricity (e)0.4392± 0.004 Inclination (i)159.9°± 3.5 Longitude of periastron (ω)232.8°± 7.9
Node (Ω)9.3°± 8.2 Notesn ReferenceSca2011a
Equinox2000 Last observation2010 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 183.7 0.366
2001 164.4 0.338
2002 142.2 0.320
2003 118.6 0.318
2004 96.1 0.335
2005 76.6 0.367
2006 60.7 0.408
2007 47.9 0.453
2008 37.3 0.498
2009 28.5 0.542
2010 21.0 0.582
2011 14.4 0.619
2012 8.5 0.653
2013 3.2 0.683
2014 358.3 0.710
2015 353.7 0.734
2016 349.4 0.754
2017 345.4 0.772
2018 341.4 0.786
2019 337.6 0.798
2020 334.0 0.807
2021 330.3 0.813
2022 326.8 0.817
2023 323.2 0.819
2024 319.7 0.818
2025 316.1 0.814
2026 312.5 0.809
2027 308.8 0.801
2028 305.0 0.791
2029 301.2 0.779
2030 297.2 0.765


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


 
  


wds11037%2B6145a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 11037+6145 BU 1077 AB (Dubhe) : NOTES
 
 
discov_num notes refcode
BU 1077 alp UMa = 50 UMa = Dubhe.
Soderhjelm (1999) orbit has low incl. fixed at 180 deg; observations Sod1999
are lacking near periastron. Pair has a giant primary according to
isochrone fit.
Faint, distant pair at 385", 7.60V. Possible common proper motion
with the SB HD 95638 at 280".
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
photocentric (astrometric) orbit based on combination of ground- Gon2002a
based catalogs with Hipparcos.
Companion could not be seen any more the following years. VBs1954
Mk III Limb-darkened diameter 7.6 +/- 0.4 mas. MkT1988
Mk III Limb-darkened diameter 7.11 +/- 0.10 mas. MkT2001
Mk III Limb-darkened diameter 6.739 +/- 0.099 mas. MkT2003
NPOI Limb-darkened diameter 6.91 +/- 0.08 mas. NOI2001b
NPOI Limb-darkened diameter 6.419 +/- 0.041 mas, Sp = G9III, NOI2018
R =17.03 +/- 0.13 \rsun, Teff = 5012 +/- 65 K, L = 165.1 +/- 8.3 \lsun,
M = 3.44 +/- 0.11 \msun, Age = 0.28 +/- 0.03 Gyr.
AB: Malkov et al. (2012) derive dynamical and spectroscopic masses
5.56 +/- 0.80 and 2.75 Msun, respectively. Mlk2012
Spectroscopic orbital elements have been determined. XXX2018e
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Gon2002a orb - Gontcharov, G.A. & Kiyaeva, O.V. 2002SvAL...28..261G
Gon2002a SvAL 28, 261, 2002
MkT1988 not j Shao, M., Colavita, M.M., Hines, B.E., Staelin, D.H., Hutter, D.J., Johnston, K.J., 1988ApJ...327..905S
MkT1988 Mozurkewich, D., Simon, R.S., Hershey, J.L., Hughes, J.A. & Kaplan, G.H. .
MkT1988 ApJ 327, 905, 1988 .
MkT2001 not j Nordgren, T.E., Sudol, J.J. & Mozurkewich, D. 2001AJ....122.2707N
MkT2001 AJ 122, 2707, 2001 .
MkT2003 Km - Mozurkewich, D., Armstrong, J.T., Hindsley, R., Quirrenbach, A., Hummel, C.A., 2003AJ....126.2502M
MkT2003 +not Hutter, D., Johnston, K.J., Hajian, A., Elias, N.M., II, Buscher, D., & Simon, R.
MkT2003 AJ 126, 2502, 2003
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
NOI2001b not j Nordgren, T.E., Sudol, J.J. & Mozurkewich, D. 2001AJ....122.2707N
NOI2001b AJ 122, 2707, 2001 .
NOI2018 not j Baines, E.K., Armstrong, J.T., Schmitt, H.R., Zavala, R.T., Benson, J.A., Hutter, 2018AJ....155...30B
NOI2018 D.J., Tycner, C. & van Belle, G.T.
NOI2018 AJ 155, 30, 2018
Sca2011a S j Scardia, M., Prieur, J.-L., Pansecchi, L., Argyle, R.W., & Sala, M. 2011AN....332..508S
Sca2011a +orb AN 332, 508, 2011
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
VBs1954 Ma - Van Biesbroeck, G. 1954PYerO...8....6V
VBs1954 +Mb Pub. Yerkes Obs. 8, pt. 6, 1954
VBs1954 +orb
XXX2018e not - Gray, D.F. 2018ApJ...869...81G
XXX2018e ApJ 869, 81, 2018
XXX2018e not - Gray, D.F. 2018ApJ...869...81G
XXX2018e ApJ 869, 81, 2018
 
 
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
11037+6145 BU 1077 AB 2006 65 57 0.4 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2007 66 44 0.5 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2009 69 26 0.6 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2010 73 18 0.6 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2011 75 10 0.6 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2012 76 5 0.7 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2013 78 0 0.7 2.02 4.95 G9III NOD 110343.84+614504.0
11037+6145 BU 1077 AB 2014 79 355 0.7 2.02 4.95 G9III NO 110343.84+614504.0
11037+6145 BU 1077 AB 2017 81 342 0.8 2.02 4.95 G9III NO 110343.84+614504.0

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

 
 
WDS 11037+6145 BU 1077 AB (Dubhe) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 19/07/12 shavarsh easy separated   very interesting The main star was visibly large versus described yellow.

 
 
WDS 11037+6145 BU 1077 AB (Dubhe) : MEASURES
 
 
No records found.

 
 
WDS 11037+6145 (Dubhe) : VIRTUAL EYEPIECE
 
 

11037+6145 BU 1077A mag 2.02 Sp G9III 11037+6145 BU 1077B sep 0.8 P.A. 351.40 mag 4.95 11037+6145 BU 1077C sep 355.4 P.A. 192.80 mag 7.19 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 11037+6145 (Dubhe) : ALADIN DSS IMAGE @ 11h 03m 43.84s +61° 45' 04.0"
 
 
 
 
WDS 11037+6145 BU 1077 AB (Dubhe) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11037+6145 BU 1077AB (Dubhe) distance=0' 11050+6147 LDS2592 distance=10' 11023+6154 SLW 556 distance=14' 11020+6124 KPP 236 distance=25' 10588+6143 STF1491AB distance=35' 10588+6143 FYM 406AC distance=35' 11004+6222 CVR1332 distance=44' 11047+6230 KPP 671 distance=45' 11098+6123 ES 1906 distance=49' 11057+6237 STF1505AB distance=54' 11057+6237 STF1505AC distance=54' 11057+6237 LAD 2AD distance=54' 11003+6057 KPP 235 distance=55' 10558+6147 SLW 541 distance=57' 11092+6230 STF1512 distance=60' 10575+6100 TDS7573 distance=64' 11060+6032 TDS7661 distance=75' 11046+6304 BVD 317 distance=79' 11141+6217 LDS2594 distance=80' 11056+6024 TDS7657 distance=83' 11124+6037 HJ 3331 distance=92' 10508+6205 CBL 321 distance=94' 11178+6133 DAM1441 distance=101' 11158+6051 STI 723 distance=103' 11189+6131 LDS2597 distance=104' 11098+6320 H 4 106AB distance=104' 11098+6320 WAL 58AC distance=104' 11002+6003 TDS7600 distance=106' 11190+6131 DAM1442 distance=110' 11077+5958 PRB 3 distance=111' 11150+6029 TDS7757 distance=112' 11171+6045 TDS7774 distance=114' 11048+5950 TDS7652 distance=116' 10592+6340 HDS1565 distance=120' 11185+6048 CLZ 49 distance=121' 10572+5951 TDS7570 distance=124' 11184+6036 FAL 36 distance=127' 11214+6213 MLR 146 distance=128' 10561+5950 CVR1325 distance=129' 10591+6350 KPP3829CD distance=129' 10591+6350 CBL 46AB distance=130' 10452+6140 FYM 647 distance=132' 10449+6151 STI 713 distance=133' 10449+6150 SKF1812 distance=134' 10451+6115 LDS2586 distance=138' 10453+6205 HJ 3330 distance=140' 11045+6405 TDS7649 distance=141' 10456+6250 STI 714 distance=143' 10569+6401 TDS7567 distance=144' 11024+5921 TDS7627 distance=145' 11156+5947 STF1519 distance=147' 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 Dubhe 11037+6145 BU 1077 AB 342 0.8
Show Dubhe 11037+6145 BU 1077 AC 206 384.5
Show 11050+6147 LDS2592 351 7.1 10
Show 11023+6154 SLW 556 219 41.1 14
Show 11020+6124 KPP 236 121 4.5 25
Show 10588+6143 STF1491 AB 32 14.1 35
Show 10588+6143 FYM 406 AC 259 21.7 35
Show 11004+6222 CVR1332 182 3.9 44
Show 11047+6230 KPP 671 251 6.0 45
Show 11098+6123 ES 1906 280 4.9 49
Show 11057+6237 STF1505 AB 312 8.2 54
Show 11057+6237 STF1505 AC 177 217.7 54
Show 11057+6237 LAD 2 AD 108 32.3 54
Show 11003+6057 KPP 235 159 4.7 55
Show 10558+6147 SLW 541 84 12.6 57
Show 11092+6230 STF1512 51 9.9 60
Show 10575+6100 TDS7573 183 0.4 64
Show 11060+6032 TDS7661 54 2.0 75
Show 11046+6304 BVD 317 95 25.7 79
Show 11141+6217 LDS2594 277 36.0 80
Show 11056+6024 TDS7657 201 0.5 83
Show 11124+6037 HJ 3331 160 9.7 92
Show 10508+6205 CBL 321 49 19.2 94
Show 11178+6133 DAM1441 20 3.6 101
Show 11158+6051 STI 723 1 5.8 103
Show 11189+6131 LDS2597 352 117.0 104
Show 11098+6320 H 4 106 AB 134 20.1 104
Show 11098+6320 WAL 58 AC 171 79.7 104
Show 11002+6003 TDS7600 69 0.5 106
Show 11190+6131 DAM1442 359 2.4 110
Show 11077+5958 PRB 3 215 999.9 111
Show 11150+6029 TDS7757 156 0.7 112
Show 11171+6045 TDS7774 103 1.0 114
Show 11048+5950 TDS7652 110 0.5 116
Show 10592+6340 HDS1565 97 0.2 120
Show 11185+6048 CLZ 49 179 26.6 121
Show 10572+5951 TDS7570 351 0.5 124
Show 11184+6036 FAL 36 17 6.3 127
Show 11214+6213 MLR 146 40 0.8 128
Show 10561+5950 CVR1325 262 4.0 129
Show 10591+6350 KPP3829 CD 325 1.6 129
Show 10591+6350 CBL 46 AB 178 55.2 130
Show 10452+6140 FYM 647 357 13.8 132
Show 10449+6151 STI 713 114 14.7 133
Show 10449+6150 SKF1812 228 12.9 134
Show 10451+6115 LDS2586 173 54.0 138
Show 10453+6205 HJ 3330 105 6.4 140
Show 11045+6405 TDS7649 254 0.4 141
Show 10456+6250 STI 714 35 12.1 143
Show 10569+6401 TDS7567 28 2.0 144
Show 11024+5921 TDS7627 334 0.7 145

 
 
WDS 11037+6145 : COMPONENTS
 
 
  A B
B pa=351.4°
sep=0.78"
 
C pa=192.8°
sep=355.37"
pa=192.8°
sep=356.10"
 
 
11037+6145 A
 
 
Common name Dubhe Meaning Bear Other names DUBB, AK Coord arcsec 2000 110343.84+614504.0
Mag 2.02 Spectral class G9III (yellow) PmRA -119.00 PmDE -67.0
SAO 15384 HIP 54061 Tycho2 4146-01274-1 HD 95689
HR 4301 GC 15185 BD BD+62 1161 Bayer Alpha Ursae Majoris
Bayer name Alp UMa Flamsteed 50 Ursae Majoris Flamsteed name 50 UMa FK5 417
SAO
SAO 15384 DelFlag RA1950 PmRA1950 -0.0168
DE1950 PmDE1950 -0.071 Vmag 2 SpType K0
Double code Source 74 CatNum 417 DM BD+62 1161
DMcomp BDsup HD 95689 M HD 0
GC 15185 RA1950rad 2.88267091 DE1950rad 1.08247647 PmRA2000 -0.0164
PmDE2000 -0.067
Hipparcos
Catalog H HIP 54061 Proxy H RAhms 11 03 43.84
DEdms +61 45 04.0 Vmag 1.81 VarFlag R Vmag H
RAdeg 165.933 DEdeg 61.7511 AstroRef A Plx 26.38
CCDM 11037+6145 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 270 Rho 0.672 HD 95689 BD BD+62 1161
CD CP Dm number +62 1161 VIred 1.04
SpType F7V comp R SpType Coord arcsec 2000 110343.84+614504.0
Hipparcos 2
HIP 54061 Sn 17 So 3 Nc 2
RArad 2.8960711378 DErad 1.0777603439 Plx 26.54 PmRA -134.11
PmDE -34.7 E RArad 0.28 E DErad 0.31 E Plx 0.48
E pmRA 0.35 E pmDE 0.39 Hpmag 1.9519 E Hpmag 0.0004
SHp 0.005 VA 0 BV 1.061 E BV 0.003
VI 1.03
CCDM
Ccdm 11037+6145 RComp Comp A Note1
Note2 Discov num DRAs 1.68 DDEs 3.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 2.0 Sp K0 PmNote *
PmRA -117 PmDE -71 Dm number +62 1161 Cat1 BD
Name2 +62 691 Cat2 AGK2/3 HD 95689 M HD
ADS BDS A 8035 M ADS BDS N IDS IDS 10576N6217A
HIC 54061
 
 
11037+6145 B
 
 
Coord arcsec 2000 110343.82+614504.8 Mag 4.95 Calc delta mag 2.93 Calc coord yes
CCDM
Ccdm 11037+6145 RComp Comp B Note1 *
Note2 Discov num BU 1077 DRAs DDEs
R dRAs Year 1889 Theta Rho
Obs 99 Vmag 4.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 8035 M ADS BDS N N IDS IDS 10576N6217B
HIC 54061
 
 
11037+6145 C
 
 
Coord arcsec 2000 110332.72+613917.5 Mag 7.19 PmRA -117.00 PmDE -66.0
Calc delta mag 5.17 Calc coord yes