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Current system
09036+4709
A 1585
Alkaphrah


Nearby doubles
21' : 09020+4722
ES 598

31' : 09008+4718
CVR1184

32' : 09033+4740
HU 720

33' : 09068+4707
COU2687

47' : 09080+4720
STF1310AB

54' : 08591+4736
SKF 516

56' : 08589+4737
SLW 319

70' : 08577+4743
UC 1734

72' : 09087+4620
KPP1497

73' : 09069+4605
TDS 514

80' : 09105+4747
TDS6370

80' : 08589+4607
COU2685

82' : 09012+4552
SKF 858

83' : 08563+4745
HDS1292

87' : 08553+4656
HJ 1163

89' : 08559+4632
LDS 908

89' : 09076+4551
SKF 881

97' : 09013+4843
ES 1083

97' : 09062+4842
TDS6318

98' : 09097+4555
SKF 886

98' : 09020+4534
DAM1522

99' : 09037+4531
COU2686

100' : 09134+4709
CBL 275

100' : 09020+4531
SKF 862

103' : 09136+4659
STF1318

106' : 09135+4638
UC 1768



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.

09036+4709 A 1585 (Alkaphrah)

 
 
09h 03m 37.56s +47° 09' 24.0" P.A. 278.00 sep 0.3 mag 4.16,4.54 Sp A1V dist. 109.89 pc (358.46 l.y.)
 
 
Coord 2000 09036+4709 Discov num A  1585 Comp Coord arcsec 2000 09 03 37.56 +47 09 24.0
Date first 1907 Date last 2019 Obs 206
Pa first 283 Pa last 277.7 P.A. Now (θ) 275.6°
Sep first 0.2 Sep last 0.27 Sep. Now (ρ) 0.213"
Mag pri 4.16 Mag sec 4.54 delta mag (ΔM) 0.38 Spectral class A1V (white)
Pri motion ra -033 Sec motion ra
Pri motion dec -054 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Alkaphrah Var name NSV4357 UMa Constellation Ursa Major SAO 42661
HIP 44471 Tycho2 3424-01626-1 HD 77327 HR 3594
GC 12503 ADS 7158 BD BD+47 1633 Bayer Kappa Ursae Majoris
Bayer name Kap UMa Flamsteed 12 Ursae Majoris Flamsteed name 12 UMa FK5 341
Distance 109.89 Distance ly 358.46 Bayer greek κ UMa
Other names Talitha australis, Alkafzah, El Koprah
Meaning leap (of the gazelle)
 
 
ORBITAL ELEMENTS
 
 
Period (P)13007.2d (35.61y)± 9.7 Periastron (T)50404m (1996.879y)± 12 Semi-major axis (a)0.18194a± 0.00025
Eccentricity (e)0.5584± 0.0015 Inclination (i)109.41°± 0.066 Longitude of periastron (ω)355.63°± 0.36
Node (Ω)105.641°± 0.08 Notesn ReferenceMut2010b
Equinox2000 Last observation2008 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 18.4 0.043
2001 340.3 0.060
2002 322.3 0.087
2003 313.0 0.115
2004 307.4 0.141
2005 303.4 0.166
2006 300.5 0.188
2007 298.1 0.208
2008 296.2 0.225
2009 294.5 0.240
2010 293.0 0.253
2011 291.6 0.264
2012 290.3 0.272
2013 289.1 0.278
2014 287.9 0.281
2015 286.7 0.283
2016 285.6 0.282
2017 284.4 0.280
2018 283.2 0.274
2019 282.0 0.267
2020 280.6 0.257
2021 279.1 0.245
2022 277.5 0.230
2023 275.6 0.213
2024 273.4 0.192
2025 270.6 0.169
2026 266.8 0.144
2027 261.2 0.115
2028 251.8 0.085
2029 231.7 0.055
2030 184.3 0.039


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


 
  


wds09036%2B4709a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 09036+4709 A 1585 (Alkaphrah) : NOTES
 
 
discov_num notes refcode
A 1585 kap UMa = 12 UMa = Alkaphrah.
Elongations and quadrant doubtful. B__1963b
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
1975.950: This observation was made under very poor conditions and
yielded a poor set of fringes. BLM1978
1981.350: This observation was incorrectly attributed to Fin 347 by Tok1982a
Tokovinin (1982a) (noted in Tokovinin 1982b) Tok1982b
Calculated mass sum is 6.30 +/- 0.98 Msun, not well-constrained. Mut2010b
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 6.63 +/- 1.41, 9.53, and 2.19 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
B__1963b Ma j van den Bos, W.H. 1963AJ.....68..582V
B__1963b AJ 68, 582, 1963
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Mut2010b Kp - Muterspaugh, M.W., Hartkopf, W.I., Lane. B.F., O'Connell, J., Williamson, M., 2010AJ....140.1623M
Mut2010b Kulkarni, S.R., Konacki, M., Burke, B.F., Colavita, M.M., Shao, M., &
Mut2010b Wiktorowicz, S.J.
Mut2010b AJ 140, 1623, 2010
Tok1982a Ig j Tokovinin, A.A. 1982SvAL....8...22T
Tok1982a SvAL 8, 22, 1982 (Pisma Astron. Zhur. 8, 43, 1982)
Tok1982b Ig j Tokovinin, A.A. 1982SvAL....8...99T
Tok1982b SvAL 8, 99, 1982 (Pisma Astron. Zhur. 8, 187, 1982)
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09036+4709 A 1585 2005 135 300 0.2 4.16 4.54 A1V NOD 090337.56+470924.0
09036+4709 A 1585 2007 136 298 0.2 4.16 4.54 A1V NOD 090337.56+470924.0
09036+4709 A 1585 2008 140 297 0.2 4.16 4.54 A1V NOD 090337.56+470924.0
09036+4709 A 1585 2010 190 292 0.2 4.16 4.54 A1V NOD 090337.56+470924.0
09036+4709 A 1585 2012 192 290 0.3 4.16 4.54 A1V NO 090337.56+470924.0
09036+4709 A 1585 2014 196 289 0.3 4.16 4.54 A1V NO 090337.56+470924.0
09036+4709 A 1585 2017 197 285 0.3 4.16 4.54 A1V NO 090337.56+470924.0
09036+4709 A 1585 2019 206 278 0.3 4.16 4.54 A1V NO 090337.56+470924.0

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

 
 
WDS 09036+4709 A 1585 (Alkaphrah) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09036+4709 A 1585 (Alkaphrah) : MEASURES
 
 
No records found.

 
 
WDS 09036+4709 (Alkaphrah) : VIRTUAL EYEPIECE
 
 

09036+4709 A 1585A mag 4.16 Sp A1V 09036+4709 A 1585B sep 0.2 P.A. 281.20 mag 4.54 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 09036+4709 (Alkaphrah) : ALADIN DSS IMAGE @ 09h 03m 37.56s +47° 09' 24.0"
 
 
 
 
WDS 09036+4709 A 1585 (Alkaphrah) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

09036+4709 A 1585 (Alkaphrah) distance=0' 09020+4722 ES 598 distance=21' 09008+4718 CVR1184 distance=31' 09033+4740 HU 720 distance=32' 09068+4707 COU2687 distance=33' 09080+4720 STF1310AB distance=47' 09080+4720 SIN 43AC distance=47' 08591+4736 SKF 516 distance=54' 08589+4737 SLW 319 distance=56' 08592+4803 HU 628BC distance=70' 08592+4803 HJ 2477A,BC (Talitha) distance=70' 08577+4743 UC 1734 distance=70' 09087+4620 KPP1497 distance=72' 09069+4605 TDS 514 distance=73' 09105+4747 TDS6370 distance=80' 08589+4607 COU2685 distance=80' 09012+4552 SKF 858 distance=82' 08563+4745 HDS1292 distance=83' 08553+4656 HJ 1163 distance=87' 08559+4632 LDS 908 distance=89' 09076+4551 SKF 881 distance=89' 09013+4843 ES 1083 distance=97' 09062+4842 TDS6318 distance=97' 09097+4555 SKF 886 distance=98' 09020+4534 DAM1522 distance=98' 09037+4531 COU2686 distance=99' 09134+4709 CBL 275 distance=100' 09020+4531 SKF 862 distance=100' 09136+4659 STF1318 distance=103' 09135+4638 UC 1768 distance=106' 09013+4855 HDS1309 distance=109' 09036+4903 ES 72 distance=114' 08532+4625 TOB 49 distance=116' 09150+4704 UC 1770 distance=117' 08521+4734 ENG 40AB distance=120' 08521+4734 ENG 40AC distance=120' 08575+4854 HJ 2473 distance=121' 08521+4734 ENG 40BC distance=122' 09081+4510 HJ 1164AB distance=128' 09081+4510 ES 1147AC distance=128' 09050+4501 SKF 874 distance=130' 09036+4459 BVD 206 distance=131' 08508+4726 SLW 305 distance=132' 09120+4531 YSC 91Ba,Bb distance=132' 09120+4531 YSC 91A,Ba distance=132' 09120+4531 YSC 91A,Bb distance=132' 08507+4725 TDS6130 distance=132' 09167+4709 LDS3867 distance=134' 08533+4836 BVD 203 distance=135' 09114+4520 CVR 523 distance=136' 09168+4731 HJ 2488 distance=137' 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 Alkaphrah 09036+4709 A 1585 278 0.3
Show 09020+4722 ES 598 266 8.5 21
Show 09008+4718 CVR1184 241 4.7 31
Show 09033+4740 HU 720 136 0.8 32
Show 09068+4707 COU2687 180 0.5 33
Show 09080+4720 STF1310 AB 57 20.2 47
Show 09080+4720 SIN 43 AC 281 81.5 47
Show 08591+4736 SKF 516 31 1.6 54
Show 08589+4737 SLW 319 297 10.4 56
Show 08592+4803 HU 628 BC 206 0.9 70
Show Talitha 08592+4803 HJ 2477 A,BC 90 2.4 70
Show 08577+4743 UC 1734 272 9.6 70
Show 09087+4620 KPP1497 39 11.2 72
Show 09069+4605 TDS 514 22 0.7 73
Show 09105+4747 TDS6370 175 0.6 80
Show 08589+4607 COU2685 201 1.1 80
Show 09012+4552 SKF 858 279 0.8 82
Show 08563+4745 HDS1292 320 0.2 83
Show 08553+4656 HJ 1163 173 16.8 87
Show 08559+4632 LDS 908 132 9.9 89
Show 09076+4551 SKF 881 59 1.5 89
Show 09013+4843 ES 1083 337 6.4 97
Show 09062+4842 TDS6318 279 0.5 97
Show 09097+4555 SKF 886 116 2.2 98
Show 09020+4534 DAM1522 288 5.3 98
Show 09037+4531 COU2686 99 0.4 99
Show 09134+4709 CBL 275 138 14.9 100
Show 09020+4531 SKF 862 105 1.1 100
Show 09136+4659 STF1318 227 2.6 103
Show 09135+4638 UC 1768 170 13.0 106
Show 09013+4855 HDS1309 319 0.1 109
Show 09036+4903 ES 72 300 13.2 114
Show 08532+4625 TOB 49 254 20.4 116
Show 09150+4704 UC 1770 151 8.3 117
Show 08521+4734 ENG 40 AB 325 184.7 120
Show 08521+4734 ENG 40 AC 286 230.7 120
Show 08575+4854 HJ 2473 246 17.8 121
Show 08521+4734 ENG 40 BC 233 144.4 122
Show 09081+4510 HJ 1164 AB 173 6.0 128
Show 09081+4510 ES 1147 AC 278 39.8 128
Show 09050+4501 SKF 874 27 14.3 130
Show 09036+4459 BVD 206 291 17.3 131
Show 08508+4726 SLW 305 77 12.5 132
Show 09120+4531 YSC 91 Ba,Bb 158 0.1 132
Show 09120+4531 YSC 91 A,Ba 305 0.8 132
Show 09120+4531 YSC 91 A,Bb 302 0.8 132
Show 08507+4725 TDS6130 285 0.5 132
Show 09167+4709 LDS3867 276 441.3 134
Show 08533+4836 BVD 203 318 9.6 135
Show 09114+4520 CVR 523 16 13.4 136
Show 09168+4731 HJ 2488 238 10.2 137

 
 
WDS 09036+4709 : COMPONENTS
 
 
  A
B pa=281.2°
sep=0.19"
 
 
09036+4709 A
 
 
Componente originario normalizzato AB Common name Alkaphrah Meaning leap (of the gazelle) Other names Talitha australis, Alkafzah, El Koprah
Coord arcsec 2000 090337.56+470924.0 Mag 4.16 Spectral class A1V (white) PmRA -33.00
PmDE -54.0 SAO 42661 HIP 44471 Tycho2 3424-01626-1
HD 77327 HR 3594 GC 12503 ADS 7158
BD BD+47 1633 Bayer Kappa Ursae Majoris Bayer name Kap UMa Flamsteed 12 Ursae Majoris
Flamsteed name 12 UMa FK5 341
Tycho2
Tycho2 3424-01626-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 3.555 E BTmag 0.014 VTmag 3.547
E VTmag 0.009 Prox 999 TYC T HIP 44471
CCDM AB RAdeg 135.90648556 DEdeg 47.15664944 EpRA 1990 1.88
EpDE 1990 1.95 E RAdeg 3.2 E DEdeg 3.4 Posflg P
Corr 0.1
SAO
SAO 42661 DelFlag RA1950 PmRA1950 -0.0033
DE1950 PmDE1950 -0.056 Vmag 3.7 SpType A0
Double code Source 74 CatNum 341 DM BD+47 1633
DMcomp BDsup HD 77327 M HD 0
GC 12503 RA1950rad 2.35715921 DE1950rad 0.8265142 PmRA2000 -0.0032
PmDE2000 -0.052
Hipparcos
Catalog H HIP 44471 Proxy H RAhms 09 03 37.56
DEdms +47 09 24.0 Vmag 3.57 VarFlag R Vmag H
RAdeg 135.906 DEdeg 47.1567 AstroRef * Plx 7.71
CCDM 09036+4709 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 265 Rho 0.128 HD 77327 BD BD+47 1633
CD CP Dm number +47 1633 VIred 0.02
SpType A1Vn R SpType Coord arcsec 2000 090337.56+470924.0
Hipparcos 2
HIP 44471 Sn 55 So 3 Nc 2
RArad 2.3720158026 DErad 0.8230389704 Plx 9.1 PmRA -36.19
PmDE -55.4 E RArad 0.41 E DErad 0.35 E Plx 0.5
E pmRA 0.48 E pmDE 0.32 Hpmag 3.5778 E Hpmag 0.0006
SHp 0.005 VA 0 BV 0.007 E BV 0.004
VI 0.03
CCDM
Ccdm 09036+4709 RComp Comp A Note1
Note2 Discov num DRAs 1.54 DDEs 23.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.4 Sp A0 PmNote *
PmRA -33 PmDE -56 Dm number +47 1633 Cat1 BD
Name2 +47 796 Cat2 AGK2/3 HD 77327 M HD
ADS BDS A 7158 M ADS BDS N IDS IDS 08568N4733A
HIC 44471
 
 
09036+4709 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 090337.54+470924.0 Mag 4.54 Calc delta mag 0.38
Calc coord yes
CCDM
Ccdm 09036+4709 RComp Comp B Note1 *
Note2 Discov num A 1585 DRAs DDEs
R dRAs Year 1907 Theta Rho
Obs 99 Vmag 4.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7158 M ADS BDS N IDS IDS 08568N4733B
HIC 44471