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Doubles in session


Current system
09104+6708
STF 1306 AB
Sig2 UMa


Nearby doubles
34' : 09046+6710
LDS2302

48' : 09081+6622
MLB1074

49' : 09162+6633
CVR 526

50' : 09018+6712
LDS2299

53' : 09076+6758
MLB 404

56' : 09156+6755
LDS2305

57' : 09009+6719
TDS6245

59' : 09201+6655
LDS2309

59' : 09048+6619
MLB 346

63' : 09004+6733
TDS6242

64' : 09058+6807
MLR 700

69' : 09040+6805
LDS1223

70' : 09222+6711
STF1330

71' : 09076+6600
TDS6332

74' : 09229+6719
LDS2310

80' : 09228+6638
TDS6517

85' : 09239+6743
HDS1350

86' : 08559+6655
TDS6193

91' : 09173+6547
LDS2307

99' : 09162+6536
LDS2306

105' : 08555+6808
TDS6186

106' : 09134+6853
RAO 568

106' : 09156+6526
LDS2576

112' : 09083+6517
HU 1126

114' : 09230+6544
TDS6520

117' : 09039+6858
UC 1747



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.

09104+6708 STF 1306 AB (Sig2 UMa)

 
 
09h 10m 23.53s +67° 08' 03.3" P.A. 346.00 sep 4.4 mag 4.87,8.85 Sp F7V dist. 20.38 pc (66.48 l.y.)
 
 
Coord 2000 09104+6708 Discov num STF1306 Comp AB Coord arcsec 2000 09 10 23.53 +67 08 03.3
Date first 1782 Date last 2020 Obs 233
Pa first 283 Pa last 346.3 P.A. Now (θ) 346.3°
Sep first 8.0 Sep last 4.35 Sep. Now (ρ) 4.35"
Mag pri 4.87 Mag sec 8.85 delta mag (ΔM) 3.98 Spectral class F7V (yellow-white)
Pri motion ra +007 Sec motion ra +004
Pri motion dec -095 Sec motion dec -030
Notes N O (See Notes, Orbital solution)
rPM=0.683
This double is physical.
 
 
09104+6708 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Sig2 UMa 14788 09 10 24 +67 08 03 STF 1306 AB 2020 233 346 4.4 4.87 8.85 3.98 Y <===
Show 14788 09 10 24 +67 08 03 STF 1306 AC 2003 10 148 197.8 4.87 10.32 5.45
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Sig2 UMa Var name NSV4392 UMa Constellation Ursa Major SAO 14788
HIP 45038 Tycho2 4141-01496-1 Gaia DR2 1068982214258617216 HD 78154
HR 3616 GC 12619 ADS 7203 GL Gl 335A
BD BD+67 577 Bayer Sigma 2 Ursae Majoris Bayer name Sig2 UMa Flamsteed 13 Ursae Majoris
Flamsteed name 13 UMa Distance 20.38 Distance ly 66.48 Bayer greek σ2 UMa
 
 
ORBITAL ELEMENTS
 
 
Period (P)920.9005y± 90.7281 Periastron (T)1917.0555y± 0.2205 Semi-major axis (a)5.73856a± 0.40385
Eccentricity (e)0.79257± 0.01527 Inclination (i)144.031°± 1.72 Longitude of periastron (ω)334.501°± 1.122
Node (Ω)105.205°± 1.772 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 353.5 3.884
2001 353.0 3.919
2002 352.6 3.953
2003 352.2 3.987
2004 351.8 4.020
2005 351.4 4.054
2006 351.1 4.088
2007 350.7 4.121
2008 350.3 4.154
2009 349.9 4.187
2010 349.6 4.220
2011 349.2 4.253
2012 348.9 4.286
2013 348.5 4.319
2014 348.2 4.351
2015 347.9 4.384
2016 347.5 4.416
2017 347.2 4.448
2018 346.9 4.480
2019 346.6 4.512
2020 346.3 4.544
2021 346.0 4.576
2022 345.7 4.607
2023 345.4 4.638
2024 345.1 4.670
2025 344.8 4.701
2026 344.5 4.732
2027 344.2 4.763
2028 343.9 4.794
2029 343.7 4.824
2030 343.4 4.855


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


 
  


wds09104%2B6708d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 09104+6708 STF 1306 AB (Sig2 UMa) : NOTES
 
 
discov_num notes refcode
STF1306 sig 2 UMa = 13 UMa.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
AB: H 3 54. MEv2010
 
 
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 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
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
09104+6708 STF1306 AB 2006 205 351 4.1 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2007 207 351 4.2 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2008 213 350 4.1 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2009 215 352 4.0 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2010 216 350 4.3 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2012 221 349 4.3 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2013 224 349 4.3 4.87 8.85 F7V NOD 091023.53+670803.3
09104+6708 STF1306 AB 2015 225 348 4.5 4.87 8.85 F7V NO 091023.53+670803.3
09104+6708 STF1306 AB 2016 227 348 4.3 4.87 8.85 F7V NO 091023.53+670803.3
09104+6708 STF1306 AB 2018 231 348 4.6 4.87 8.85 F7V NO 091023.53+670803.3
09104+6708 STF1306 AB 2020 233 346 4.4 4.87 8.85 F7V NO 091023.53+670803.3

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

 
 
WDS 09104+6708 STF 1306 AB (Sig2 UMa) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09104+6708 STF 1306 AB (Sig2 UMa) : MEASURES
 
 
No records found.

 
 
WDS 09104+6708 (Sig2 UMa) : VIRTUAL EYEPIECE
 
 

09104+6708 STF1306A mag 4.87 Sp F7V 09104+6708 STF1306B sep 4.2 P.A. 354.60 mag 8.85 09104+6708 STF1306C sep 172.4 P.A. 166.30 mag 10.32 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 09104+6708 (Sig2 UMa) : ALADIN DSS IMAGE @ 09h 10m 23.53s +67° 08' 03.3"
 
 
 
 
WDS 09104+6708 STF 1306 AB (Sig2 UMa) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

09104+6708 STF1306AB distance=0' 09046+6710 LDS2302 distance=34' 09081+6622 MLB1074 distance=48' 09162+6633 CVR 526 distance=49' 09018+6712 LDS2299 distance=50' 09076+6758 MLB 404 distance=53' 09156+6755 LDS2305 distance=56' 09009+6719 TDS6245 distance=57' 09201+6655 LDS2309 distance=59' 09048+6619 MLB 346 distance=59' 09004+6733 TDS6242 distance=63' 09058+6807 MLR 700 distance=64' 09040+6805 LDS1223 distance=69' 09222+6711 STF1330 distance=70' 09076+6600 TDS6332 distance=71' 09229+6719 LDS2310 distance=74' 09228+6638 TDS6517 distance=80' 09239+6743 HDS1350 distance=85' 08559+6655 TDS6193 distance=86' 09173+6547 LDS2307 distance=91' 09162+6536 LDS2306 distance=99' 08555+6808 TDS6186 distance=105' 09134+6853 RAO 568 distance=106' 09156+6526 LDS2576 distance=106' 09083+6517 HU 1126 distance=112' 09230+6544 TDS6520 distance=114' 09039+6858 UC 1747 distance=117' 08505+6741 HDS1280 distance=120' 08530+6817 HDS1282 distance=121' 09103+6506 LDS2304 distance=122' 09077+6459 STF1303 distance=131' 09026+6913 SKF2684 distance=133' 09115+6453 SKF2571 distance=135' 09156+6456 LDS1224 distance=136' 09048+6455 MLR 322 distance=138' 09002+6503 TDS 506 distance=140' 09120+6928 TDS6387 distance=140' 09060+6930 TDS 513 distance=144' 09162+6931 LDS1693 distance=146' 09042+6446 LDS2301 distance=147' 09127+6442 MMA 37 distance=147' 09127+6938 DAM1564 distance=151' 09130+6939 MLR 417 distance=151' 09119+6436 CVR 87 distance=153' 08522+6521 DAM1496 distance=154' 08524+6520 LDS2296 distance=155' 09128+6943 MLR 416 distance=156' 08558+6458 ARG 21AB distance=157' 08509+6913 UC 1721 distance=166' 08558+6447 TDS6192 distance=167' 09054+6421 TDS6305 distance=170' 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 09104+6708 STF1306 AB 346 4.4
Show 09104+6708 STF1306 AC 148 197.8
Show 09046+6710 LDS2302 181 11.3 34
Show 09081+6622 MLB1074 329 9.6 48
Show 09162+6633 CVR 526 105 9.2 49
Show 09018+6712 LDS2299 153 6.6 50
Show 09076+6758 MLB 404 160 3.2 53
Show 09156+6755 LDS2305 47 26.5 56
Show 09009+6719 TDS6245 61 0.8 57
Show 09201+6655 LDS2309 314 1.9 59
Show 09048+6619 MLB 346 301 3.0 59
Show 09004+6733 TDS6242 175 0.5 63
Show 09058+6807 MLR 700 194 0.2 64
Show 09040+6805 LDS1223 2 12.1 69
Show 09222+6711 STF1330 303 25.2 70
Show 09076+6600 TDS6332 175 1.2 71
Show 09229+6719 LDS2310 314 3.0 74
Show 09228+6638 TDS6517 185 0.5 80
Show 09239+6743 HDS1350 234 2.7 85
Show 08559+6655 TDS6193 261 0.4 86
Show 09173+6547 LDS2307 45 73.1 91
Show 09162+6536 LDS2306 128 4.0 99
Show 08555+6808 TDS6186 89 0.6 105
Show 09134+6853 RAO 568 232 0.6 106
Show 09156+6526 LDS2576 314 9.6 106
Show 09083+6517 HU 1126 36 3.9 112
Show 09230+6544 TDS6520 158 1.4 114
Show 09039+6858 UC 1747 48 47.7 117
Show 08505+6741 HDS1280 102 0.1 120
Show 08530+6817 HDS1282 270 0.4 121
Show 09103+6506 LDS2304 129 4.7 122
Show 09077+6459 STF1303 282 2.8 131
Show 09026+6913 SKF2684 251 48.9 133
Show 09115+6453 SKF2571 346 9.9 135
Show 09156+6456 LDS1224 309 6.0 136
Show 09048+6455 MLR 322 156 1.1 138
Show 09002+6503 TDS 506 129 1.1 140
Show 09120+6928 TDS6387 284 0.9 140
Show 09060+6930 TDS 513 260 2.4 144
Show 09162+6931 LDS1693 78 2.3 146
Show 09042+6446 LDS2301 82 143.2 147
Show 09127+6442 MMA 37 155 13.5 147
Show 09127+6938 DAM1564 39 2.0 151
Show 09130+6939 MLR 417 96 0.9 151
Show 09119+6436 CVR 87 304 106.0 153
Show 08522+6521 DAM1496 313 2.5 154
Show 08524+6520 LDS2296 324 3.5 155
Show 09128+6943 MLR 416 249 0.5 156
Show 08558+6458 ARG 21 AB 106 21.6 157
Show 08509+6913 UC 1721 280 7.3 166
Show 08558+6447 TDS6192 257 0.7 167

 
 
WDS 09104+6708 : COMPONENTS
 
 
  A B
B pa=354.6°
sep=4.25"
 
C pa=166.3°
sep=172.37"
pa=166.5°
sep=176.57"
 
 
09104+6708 A
 
 
Name Sig2 UMa Coord arcsec 2000 091023.53+670803.3 Mag 4.87 Spectral class F7V (yellow-white)
PmRA 7.00 PmDE -95.0 SAO 14788 HIP 45038
Tycho2 4141-01496-1 HD 78154 HR 3616 GC 12619
BD BD+67 577 Bayer Sigma 2 Ursae Majoris Bayer name Sig2 UMa Flamsteed 13 Ursae Majoris
Flamsteed name 13 UMa
Tycho2
Tycho2 4141-01496-1 Pflag RAmdeg 137.59807450 DEmdeg 67.13400723
PmRA 7.1 PmDE -95.1 E RAmdeg 3 E DEmdeg 3
E pmRA 0.8 E pmDE 0.9 EpRAm 1991.59 EpDEm 1991.49
Num 9 Q RAmdeg 2.3 Q DEmdeg 0.7 Q pmRA 2.5
Q pmDE 0.8 BTmag 5.384 E BTmag 0.014 VTmag 4.869
E VTmag 0.009 Prox 36 TYC T HIP 45038
CCDM A RAdeg 137.59803333 DEdeg 67.13422750 EpRA 1990 1.82
EpDE 1990 1.66 E RAdeg 3.2 E DEdeg 3.3 Posflg
Corr -0.4
SAO
SAO 14788 DelFlag RA1950 PmRA1950 -0.0034
DE1950 PmDE1950 -0.077 Vmag 4.9 SpType F8
Double code Source 71 CatNum 344 DM BD+67 577
DMcomp BDsup HD 78154 M HD 0
GC 12619 RA1950rad 2.3824567 DE1950rad 1.17529343 PmRA2000 -0.0035
PmDE2000 -0.074
Hipparcos
Catalog H HIP 45038 Proxy H RAhms 09 10 23.53
DEdms +67 08 03.3 Vmag 4.8 VarFlag R Vmag G
RAdeg 137.598 DEdeg 67.1342 AstroRef A Plx 48.87
CCDM 09105+6707 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 358 Rho 3.59 HD 78154 BD BD+67 577
CD CP Dm number +67 577 VIred 0.57
SpType F7IV-V R SpType Coord arcsec 2000 091023.53+670803.3
Hipparcos 2
HIP 45038 Sn 15 So 3 Nc 2
RArad 2.4015385997 DErad 1.1717135088 Plx 49.07 PmRA 13.13
PmDE -90.93 E RArad 0.19 E DErad 0.25 E Plx 0.37
E pmRA 0.22 E pmDE 0.3 Hpmag 4.8936 E Hpmag 0.0004
SHp 0.006 VA 0 BV 0.489 E BV 0.007
VI 0.57
 
 
09104+6708 B
 
 
Coord arcsec 2000 091023.46+670807.5 Mag 8.85 PmRA 4.00 PmDE -30.0
Calc delta mag 3.98 Calc coord yes
 
 
09104+6708 C
 
 
Coord arcsec 2000 091030.56+670515.9 Mag 10.32 PmRA 2.00 PmDE -20.0
Calc delta mag 5.45 Calc coord yes