13239+5456 PEA 1 Aa,Ab

 
 
13h 23m 55.42s +54° 55' 31.5" P.A. 34.00 sep 0.0 mag 3.00,3.00 Sp A1VpSrSi dist. 26.31 pc (85.82 l.y.)
 
 
Coord 2000 13239+5456 Discov num PEA   1 Comp Aa,Ab Coord arcsec 2000 13 23 55.42 +54 55 31.5
Date first 1925 Date last 2004 Obs 63
Pa first 247 Pa last 33.7 P.A. Now (θ) 33.7°
Sep first 0.0 Sep last 0.008 Sep. Now (ρ) 0.008"
Mag pri 3.00 Mag sec 3.00 delta mag (ΔM) 0 Spectral class A1VpSrSi (white)
Pri motion ra +122 Sec motion ra
Pri motion dec -020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
13239+5456 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 28737 13 23 55 +54 55 32 PEA 1 Aa,Ab 2004 63 34 0.0 3.00 3.00 0.00 Y <===
Show Mizar 28737 13 23 55 +54 55 32 STF 1744 AB 2020 500 154 14.7 2.23 3.88 1.65
Show 28737 13 23 55 +54 55 32 STF 1744 AC 2020 15 73 715.5 2.23 4.01 1.78
Show 28737 13 23 55 +54 55 32 SMR 4 AD 2020 11 103 498.1 2.23 7.62 5.39
Show 28737 13 23 55 +54 55 32 SHY 247 AE 1999 3 321 999.9 2.23 6.88 4.65
Show 28737 13 23 55 +54 55 32 SHY 247 AF 1999 3 359 999.9 2.23 9.86 7.63
Show Alcor 28751 13 25 14 +54 59 17 PSF 1 Ca,Cb 2009 5 207 1.0 4.01 8.00 3.99
Show Alcor 28751 13 25 14 +54 59 17 SHY 248 CE 1999 3 317 999.9 4.01 6.88 2.87
Show Alcor 28751 13 25 14 +54 59 17 SHY 248 CF 1999 3 355 999.9 4.01 9.86 5.85
Show Alcor 28751 13 25 14 +54 59 17 SHY 248 CG 1999 3 271 999.9 4.01 8.21 4.20
Show Alcor 28751 13 25 14 +54 59 17 SHY 248 CH 1999 3 243 999.9 4.01 8.63 4.62
Decuple system
8 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Mizar Var name NSV6224 UMa Constellation Ursa Major SAO 28737
HIP 65378 Tycho2 3850-01385-1 Gaia DR2 1563590579345330944 HD 116656
HR 5054 GC 18133 ADS 8891 GL NN 3783A
BD BD+55 1598 Bayer Zeta Ursae Majoris Bayer name Zet UMa Flamsteed 79 Ursae Majoris
Flamsteed name 79 UMa FK5 497 Distance 26.31 Distance ly 85.82
Bayer greek ζ UMa
Other names Mizat, Mirza, Mitsar
Meaning bandage (thong)
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)20.53835d± 0.00005 Periastron (T)47636.07d (1989.299y)± 0.02 Semi-major axis (a)9.83m± 0.03
Eccentricity (e)0.5354± 0.0025 Inclination (i)60.5°± 0.3 Longitude of periastron (ω)104.3°± 0.3
Node (Ω)106°± 0.4 Notesn ReferenceMkT1998
Equinox2000 Last observation1997 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 349.7 0.007
2001-01-01 291.8 0.007
2002-01-01 102.5 0.009
2003-01-01 70.5 0.010
2004-01-01 27.5 0.007
2005-01-01 326.9 0.007
2006-01-01 225.7 0.002
2007-01-01 89.3 0.010
2008-01-01 56.9 0.009
2009-01-01 4.4 0.007
2010-01-01 306.0 0.008
2011-01-01 115.2 0.007
2012-01-01 77.9 0.010
2013-01-01 40.0 0.008
2014-01-01 340.6 0.007
2015-01-01 279.6 0.006
2016-01-01 96.9 0.009
2017-01-01 65.6 0.010
2018-01-01 18.9 0.007
2019-01-01 318.8 0.008
2020-01-01 150.2 0.003
2021-01-01 84.8 0.010
2022-01-01 50.8 0.009
2023-01-01 355.1 0.007
2024-01-01 297.4 0.007
2025-01-01 106.4 0.008
2026-01-01 73.3 0.010
2027-01-01 32.3 0.008
2028-01-01 331.9 0.007
2029-01-01 256.8 0.004
2030-01-01 92.0 0.010


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



 
 


wds13239%2B5456a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)36.5y± 2 Periastron (T)1994.8y± 1 Semi-major axis (a)0.78a± 0.03
Eccentricity (e)0.6± 0.2 Inclination (i)93°± 7 Longitude of periastron (ω)287°± 14
Node (Ω)32°± 10 Notesn ReferenceGon2010
Equinox Last observation Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 28.4 0.477
2001 27.2 0.437
2002 25.7 0.387
2003 23.8 0.330
2004 20.9 0.268
2005 16.3 0.203
2006 7.3 0.138
2007 344.3 0.081
2008 286.6 0.064
2009 247.4 0.108
2010 233.8 0.171
2011 227.6 0.237
2012 224.1 0.303
2013 221.8 0.367
2014 220.2 0.429
2015 219.0 0.488
2016 218.1 0.544
2017 217.3 0.595
2018 216.6 0.642
2019 216.1 0.684
2020 215.6 0.719
2021 215.1 0.747
2022 214.7 0.766
2023 214.2 0.776
2024 213.8 0.773
2025 213.4 0.755
2026 212.9 0.719
2027 212.4 0.659
2028 211.7 0.567
2029 210.7 0.432
2030 208.4 0.238


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



 
 


wds13239%2B5456r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 13239+5456 PEA 1 Aa,Ab : NOTES
 
 
discov_num notes refcode
STF1744 A is zet UMa = Mizar. B is 80 UMa = Alcor.
Split by Benedetto Castelli. After resolving AD in C__1616
1617 he wrote to his friend, Galileo, to observe the pair, "It's one of C__1617
the beautiful things in the sky and I don't believe that in our pursuit
one could desire better." Galileo measured it in early 1617. See the G__1617
excellent discussion of its discovery in Leos Ondra's July 2004 Sky &
Telescope article, from which Galileo's measure was extracted. It was
independently found double in 1650 by Jean Baptiste Riccioli in Ric1651
Bologna: "There appears to be one star in the middle of the Great
Bear's tail, where there are actually two, as the telescope reveals."
This was also the first to be observed photographically, by John A.
Whipple with the Harvard 15inch on 27 April 1857. According to Aitken,
this was the first observed photographically (G.P. Bond at Harvard A__1935f
College Observatory in 1857 using an 8 second exposure on a collodion BdG1858
plate), and the first spectroscopic binary discovered (E.C. Pickering Pck1890
in 1889). A is a spectroscopic binary, P = 20.54d (first orbit 1901). Vog1901
B is also a spectroscopic binary (first orbits 1908), P = 175.6d, XXX1908a
spectrum A1m or A1/A2/A7. Also, common proper motion with 80 UMa XXX1908b
80 UMa (Alcor) and other members of the Ursa Major stream.
AC: SHY 247. Bayesian analysis by Shaya & Olling (2011) indicates very Shy2011
high (near 100%) probability pair is physical.
PEA 1 Mistakenly given the discoverer designation 'MKT 8' in the WDS, Pea1925
but actually first resolved by Pease in 1925, six decades before the
Mark III interferometer measures. This system has completed some 1,350
revolutions since its first resolution, probably a record for any
"visual" binary.
The orbit of Aa,Ab by Russell (1927) is combined interferometric/ Rus1927
spectroscopic (double-lined spectrum). A small magnitude difference
(which would probably place the ascending node in the second quadrant)
is uncertain.
Star B (mag. 3.96, 15") is physical, and is itself a 175.55d SB1.
Visual orbit by Hummel et al. (1995) is based on astrometry from the MkT1995
Mark III interferometer. Additional spectroscopic data yield component
masses, luminosities, radii, effective temperatures, and distance.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Pourbaix gives combined solution for this resolved SB2, yielding
orbital parallaxes and component masses. Pbx2000b
SMR 4 AD: This was the first component of Mizar split by Benedetto Castelli C__1616
in late 1616. It was called "Sidus Ludoviciana" (Ludwig's Star) by XXX2004
Johann Georg Liebnecht for the Landgrave Ludwig of Hessen-Darmstadt
who thought he has discovered a planet. He was wrong.
SHY 247 AE: HIP 65378 + HIP 64532. E component = A component of 13136+5643
= C component of 12487+6019.
SHY 247 AF: HIP 65378 + HIP 65327. F component = D component of 12417+5543.
SHY 248 CE: HIP 65477 + HIP 64532.
SHY 248 CF: HIP 65477 + HIP 65327.
SHY 248 CG: HIP 65477 + HIP 61100. G component = G component of 13136+5643.
SHY 248 CH: HIP 65477 + HIP 61481.
STF1744 AB: H 3 2. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
A__1935f - Aitken, R.G. 1935QB821.A3.......
A__1935f The Binary Stars, 1935
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
C__1616 V - Castelli, B. 2004S&T...108a..72O
C__1616 (as cited by Ondra, L., S&T, July 2004, p 72)
C__1616 (see also: http://www.leosondra.cz/en/mizar/)
C__1617 not - Castelli, B. 2004S&T...108a..72O
C__1617 +V (as cited by Ondra, L., S&T, July 2004, p 72)
C__1617 (see also: http://www.leosondra.cz/en/mizar/)
G__1617 V - Galileo Galilei 2004S&T...108a..72O
G__1617 +not Galilo manuscript 70 c, 10r, Biblioteca Nazionale Centrale, Florence, p 74
G__1617 (also see Ond2004)
Gon2010 orb - Gontcharov, G.A. & Kiyaeva, O.V. 2010NewA...15..324G
Gon2010 New Astron. 15, 324, 2010
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
MkT1995 Km j Hummel, C.A., Armstrong, J.T., Buscher, D.F., Mozurkewich, D., Quirrenbach, A., & 1995AJ....110..376H
MkT1995 +orb Vivekanand, M.
MkT1995 AJ 110, 376, 1995
MkT1998 Km j Hummel, C.A., Mozurkewich, D., Armstrong, J.T., Hajian, A.R., Elias, N.M., & 1998AJ....116.2536H
MkT1998 +orb Hutter, D.J.
MkT1998 AJ 116, 2536, 1998
Pbx2000b orb - Pourbaix, D. 2000A&AS..145..215P
Pbx2000b A&AS 145, 215, 2000
Pck1890 not - Pickering, E. 1890SidM....9...80P
Pck1890 Siderial Messenger 9, 80, 1890
Pea1925 Jp j Pease, F.G. 1925PASP...37..155P
Pea1925 PASP 37, 155, 1925
Ric1651 V - Riccoli, G.B. 2004S&T...108a..72O
Ric1651 +not (as cited by Ondra, L., S&T, July 2004, p 72)
Ric1651 also see : http://www.leosondra.cz/en/mizar/riccioli/
Rus1927 orb - Russell, H.N. 1927PASP...39..313R
Rus1927 PASP 39, 313, 1927
Shy2011 - Shaya, E.J. & Olling, R. 2011ApJS..192....2S
Shy2011 ApJS 192, 2, 2011
Shy2011 (Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011 added to WDS only if probability 90% or greater.)
Vog1901 not - Vogel, H.C. 1901ApJ....13..324V
Vog1901 ApJ 13, 324, 1890
XXX1908a not - Frost, E.B. 1908AN....177..171F
XXX1908a AN 177, 171, 1908
XXX1908b not - Ludendorff, H. 1908AN....177....7L
XXX1908b AN 177, 7, 1908
XXX2004 not - Ondra, L. 2004S&T...108a..72O
XXX2004 S&T, July 2004, p 72)
XXX2004 also see : http://www.leosondra.cz/en/mizar/riccioli/
 
 
DISCOVERER
 
 
idgroup discov author
1 PSF Project Sixteen Forty - see Zmm2010
1 SMR Schlimmer, J.
56 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
13239+5456 PEA 1 Aa,Ab 1997 60 136 0.0 2.23   A1VpSrSi NO 132355.42+545531.5
13239+5456 PEA 1 Aa,Ab 2004 63 34 0.0 2.23   A1VpSrSi NO 132355.42+545531.5

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

 
 
WDS 13239+5456 PEA 1 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 13239+5456 PEA 1 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 13239+5456 : VIRTUAL EYEPIECE
 
 

13239+5456 STF1744A mag 2.23 Sp A1VpSrSi 13239+5456 PEA   1Ab mag 3 13239+5456 STF1744B sep 13.8 P.A. 164.20 mag 3.88 13239+5456 SHY 248C sep 709.4 P.A. 71.50 mag 4.01 Sp A5V 13239+5456 PSF   1Cb sep 708.9 P.A. 71.60 mag 8 13239+5456 SMR   4D sep 301.1 P.A. 112.20 mag 7.62 13239+5456 SHY 247E sep 7067.2 P.A. 335.00 mag 6.88 Sp G1Va 13239+5456 SHY 247F sep 9997.9 P.A. 359.20 mag 9.86 Sp K5 13239+5456 SHY 248G sep 5080.7 P.A. 274.50 mag 8.21 Sp K2V 13239+5456 SHY 248H sep 6235.5 P.A. 226.00 mag 8.63 Sp K0V 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 13239+5456 : ALADIN DSS IMAGE @ 13h 23m 55.42s +54° 55' 31.5"
 
 
 
 
WDS 13239+5456 PEA 1 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


13239+5456  PEA   1Aa,Ab (Mizar) distance=0' 13239+5456  PSF   1Ca,Cb (Alcor) distance=12' 13239+5456  SHY 248CG (Alcor) distance=12' 13239+5456  SHY 248CH (Alcor) distance=12' 13239+5456  SHY 248CE (Alcor) distance=12' 13239+5456  SHY 248CF (Alcor) distance=12' 13273+5528  UC 2542 distance=44' 13205+5419  BEM9017 distance=48' 13195+5423  STI2296 distance=50' 13184+5420  HJ 2649 distance=60' 13219+5554  CBL  56 distance=62' 13198+5358  CBL 420 distance=69' 13198+5557  TDS 701 distance=71' 13275+5601  HDS1885Aa,Ab distance=73' 13275+5601  A  1361AB distance=73' 13157+5424  HDS1858 distance=79' 13279+5345  TDS8835 distance=79' 13312+5354  CVR 699 distance=89' 13291+5614  A  1362 distance=90' 13146+5417  A  1608 distance=90' 13337+5418  BEM   6 distance=94' 13213+5321  ES  733 distance=98' 13200+5322  SLW 855 distance=100' 13138+5550  CVR1496 distance=103' 13119+5445  SKF1742 distance=104' 13109+5439  CBL 412 distance=114' 13254+5649  HJ 2652 distance=115' 13276+5721  VBS  22 distance=118' 13146+5330  LDS5221 distance=119' 13099+5504  GRV1155 distance=121' 13098+5448  TDS8712 distance=123' 13258+5658  LAF  49 distance=124' 13383+5519  MLB 171 distance=126' 13351+5621  HJ 2664 distance=128' 13386+5532  WAA  44 distance=132' 13136+5643  STTA122BC distance=138' 13136+5643  STTA122AB distance=138' 13136+5643  MET  62AD distance=138' 13136+5643  STTA122AC distance=138' 13136+5643  SHY 246AE distance=138' 13136+5643  SHY 246AF distance=138' 13204+5710  CVR1503 distance=138' 13077+5441  MLB 170 distance=141' 13197+5238  TDS8787 distance=143' 13161+5705  HDS1861 distance=146' 13257+5227  BEM   5 distance=151' 13134+5252  A  1607 distance=155' 13054+5452  UC  182 distance=160' 13315+5725  MLR 555 distance=163' 13069+5612  UC 2483 distance=164' 13048+5418  UC 2471 distance=171' 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 Mizar 13239+5456 PEA 1 Aa,Ab 34 0.0
Show Mizar 13239+5456 STF1744 AB 154 14.7
Show Mizar 13239+5456 STF1744 AC 73 715.5
Show Mizar 13239+5456 SMR 4 AD 103 498.1
Show Mizar 13239+5456 SHY 247 AE 321 999.9
Show Mizar 13239+5456 SHY 247 AF 359 999.9
Show Alcor 13239+5456 PSF 1 Ca,Cb 207 1.0 12
Show Alcor 13239+5456 SHY 248 CG 271 999.9 12
Show Alcor 13239+5456 SHY 248 CH 243 999.9 12
Show Alcor 13239+5456 SHY 248 CE 317 999.9 12
Show Alcor 13239+5456 SHY 248 CF 355 999.9 12
Show 13273+5528 UC 2542 211 8.1 44
Show 13205+5419 BEM9017 211 13.0 48
Show 13195+5423 STI2296 288 6.8 50
Show 13184+5420 HJ 2649 346 20.9 60
Show 13219+5554 CBL 56 77 25.1 62
Show 13198+5358 CBL 420 171 16.0 69
Show 13198+5557 TDS 701 253 3.6 71
Show 13275+5601 HDS1885 Aa,Ab 335 0.4 73
Show 13275+5601 A 1361 AB 44 4.1 73
Show 13157+5424 HDS1858 172 0.5 79
Show 13279+5345 TDS8835 6 1.9 79
Show 13312+5354 CVR 699 184 7.9 89
Show 13291+5614 A 1362 117 2.3 90
Show 13146+5417 A 1608 266 3.2 90
Show 13337+5418 BEM 6 190 8.3 94
Show 13213+5321 ES 733 211 6.2 98
Show 13200+5322 SLW 855 15 50.4 100
Show 13138+5550 CVR1496 309 3.8 103
Show 13119+5445 SKF1742 302 1.3 104
Show 13109+5439 CBL 412 343 9.2 114
Show 13254+5649 HJ 2652 252 21.3 115
Show 13276+5721 VBS 22 239 16.8 118
Show 13146+5330 LDS5221 82 84.8 119
Show 13099+5504 GRV1155 273 13.0 121
Show 13098+5448 TDS8712 18 1.9 123
Show 13258+5658 LAF 49 17 9.3 124
Show 13383+5519 MLB 171 288 2.3 126
Show 13351+5621 HJ 2664 61 19.9 128
Show 13386+5532 WAA 44 6 0.8 132
Show 13136+5643 STTA122 BC 246 64.6 138
Show 13136+5643 STTA122 AB 216 126.0 138
Show 13136+5643 MET 62 AD 359 1.6 138
Show 13136+5643 STTA122 AC 226 184.8 138
Show 13136+5643 SHY 246 AE 48 999.9 138
Show 13136+5643 SHY 246 AF 255 999.9 138
Show 13204+5710 CVR1503 20 3.7 138
Show 13077+5441 MLB 170 272 3.7 141
Show 13197+5238 TDS8787 213 0.7 143
Show 13161+5705 HDS1861 141 0.7 146
Show 13257+5227 BEM 5 216 9.5 151

 
 
WDS 13239+5456 : COMPONENTS
 
 
  A Ab B C Cb D E F G
Ab pa=21.0°
sep=0.01"
 
B pa=164.2°
sep=13.75"
pa=164.2°
sep=13.75"
 
C pa=71.5°
sep=709.42"
pa=71.5°
sep=709.41"
pa=70.4°
sep=710.23"
 
Cb pa=71.6°
sep=708.86"
pa=71.6°
sep=708.86"
pa=70.5°
sep=709.66"
pa=196.4°
sep=0.97"
 
D pa=112.2°
sep=301.06"
pa=112.2°
sep=301.06"
pa=110.1°
sep=292.81"
pa=229.3°
sep=520.02"
pa=229.4°
sep=519.21"
 
E pa=335.0°
sep=7067.16"
pa=335.0°
sep=7067.15"
pa=335.1°
sep=7080.77"
pa=329.5°
sep=7166.75"
pa=329.5°
sep=7167.43"
pa=333.4°
sep=7286.75"
 
F pa=359.2°
sep=9997.93"
pa=359.2°
sep=9997.92"
pa=359.2°
sep=10011.21"
pa=355.2°
sep=9803.33"
pa=355.2°
sep=9804.23"
pa=357.6°
sep=10118.83"
pa=37.4°
sep=4464.42"
 
G pa=274.5°
sep=5080.74"
pa=274.5°
sep=5080.74"
pa=274.6°
sep=5085.75"
pa=271.7°
sep=5735.43"
pa=271.8°
sep=5735.20"
pa=275.5°
sep=5369.91"
pa=198.2°
sep=6365.45"
pa=205.5°
sep=10708.40"
 
H pa=226.0°
sep=6235.54"
pa=226.0°
sep=6235.54"
pa=226.1°
sep=6229.33"
pa=228.5°
sep=6889.33"
pa=228.5°
sep=6888.52"
pa=228.5°
sep=6369.33"
pa=187.4°
sep=10829.29"
pa=195.7°
sep=14905.89"
pa=172.5°
sep=4740.80"
 
 
13239+5456 A
 
 
Common name Mizar Meaning bandage (thong) Other names Mizat, Mirza, Mitsar Coord arcsec 2000 132355.42+545531.5
Mag 2.23 Spectral class A1VpSrSi (white) PmRA 121.00 PmDE -22.0
SAO 28737 HIP 65378 Tycho2 3850-01385-1 HD 116656
HR 5054 GC 18133 BD BD+55 1598 Bayer Zeta Ursae Majoris
Bayer name Zet UMa Flamsteed 79 Ursae Majoris Flamsteed name 79 UMa FK5 497
SAO
SAO 28737 DelFlag RA1950 PmRA1950 0.0139
DE1950 PmDE1950 -0.025 Vmag 2.4 SpType A2p
Double code Source 74 CatNum 497 DM BD+55 1598
DMcomp A BDsup HD 116656 M HD 0
GC 18133 RA1950rad 3.4990154 DE1950rad 0.96317673 PmRA2000 0.0142
PmDE2000 -0.02
Hipparcos
Catalog H HIP 65378 Proxy RAhms 13 23 55.42
DEdms +54 55 31.5 Vmag 2.23 VarFlag R Vmag H
RAdeg 200.981 DEdeg 54.9254 AstroRef A Plx 41.73
CCDM 13240+5456 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP AC
Theta 152 Rho 14.431 HD 116656 BD BD+55 1598
CD CP Dm number +55 1598 VIred 0.07
SpType A2V R SpType Coord arcsec 2000 132355.42+545531.5
Hipparcos 2
HIP 65378 Sn 15 So 3 Nc 2
RArad 3.5077787053 DErad 0.9586293363 Plx 38.01 PmRA 119.01
PmDE -25.97 E RArad 1.28 E DErad 1.4 E Plx 1.71
E pmRA 1.49 E pmDE 1.65 Hpmag 2.254 E Hpmag 0.0088
SHp 0.041 VA 0 BV 0.057 E BV 0.004
VI 0.07
 
 
13239+5456 Ab
 
 
Coord arcsec 2000 132355.42+545531.5 Mag 3 Calc coord yes
 
 
13239+5456 B
 
 
Coord arcsec 2000 132355.85+545518.3 Mag 3.88 PmRA 121.00 PmDE -22.0
Calc delta mag 0.88 Calc coord yes
 
 
13239+5456 C
 
 
Common name Alcor Meaning the faint one Other name g UMa Coord arcsec 2000 132513.53+545916.6
Coord calc 132513.53+545916.6 Mag 4.01 Spectral class A5V (white) PmRA 119.00
PmDE -18.0 SAO 28751 HIP 65477 Tycho2 3850-01384-1
HD 116842 HR 5062 GC 18155 BD BD+55 1603
Flamsteed 80 Ursae Majoris Flamsteed name 80 UMa Calc delta mag 1.01
Tycho2
Tycho2 3850-01384-1 Pflag RAmdeg 201.30640150 DEmdeg 54.98795585
PmRA 119.0 PmDE -18.3 E RAmdeg 3 E DEmdeg 3
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.57 EpDEm 1991.55
Num 10 Q RAmdeg 0.3 Q DEmdeg 1.0 Q pmRA 0.4
Q pmDE 0.9 BTmag 4.203 E BTmag 0.014 VTmag 4.007
E VTmag 0.009 Prox 999 TYC T HIP 65477
CCDM RAdeg 201.30592361 DEdeg 54.98799833 EpRA 1990 1.71
EpDE 1990 1.68 E RAdeg 3.2 E DEdeg 3.2 Posflg
Corr -0.2
SAO
SAO 28751 DelFlag RA1950 PmRA1950 0.0134
DE1950 PmDE1950 -0.021 Vmag 4 SpType A5
Double code Source 70 CatNum 18155 DM BD+55 1603
DMcomp BDsup HD 116842 M HD 0
GC 18155 RA1950rad 3.50472857 DE1950rad 0.96426041 PmRA2000 0.0138
PmDE2000 -0.016
Hipparcos
Catalog H HIP 65477 Proxy RAhms 13 25 13.42
DEdms +54 59 16.8 Vmag 3.99 VarFlag 1 R Vmag H
RAdeg 201.306 DEdeg 54.988 AstroRef Plx 40.19
CCDM 13240+5456 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 116842 BD BD+55 1603
CD CP Dm number +55 1603 VIred 0.19
SpType A5V SB R SpType Coord arcsec 2000 132513.42+545916.8
Hipparcos 2
HIP 65477 Sn 5 So 0 Nc 1
RArad 3.5134507307 DErad 0.9597216255 Plx 39.91 PmRA 120.21
PmDE -16.04 E RArad 0.11 E DErad 0.11 E Plx 0.13
E pmRA 0.12 E pmDE 0.14 Hpmag 4.0506 E Hpmag 0.0008
SHp 0.008 VA 2 BV 0.169 E BV 0.006
VI 0.19
 
 
13239+5456 Cb
 
 
Coord arcsec 2000 132513.50+545915.7 Mag 8 Calc delta mag 5 Calc coord yes
 
 
13239+5456 D
 
 
Coord arcsec 2000 132427.75+545337.8 Mag 7.62 PmRA -20.00 PmDE -5.0
Calc delta mag 4.62 Calc coord yes
 
 
13239+5456 E
 
 
Coord arcsec 2000 131808.13+564244.6 Mag 6.88 Spectral class G1Va (yellow) PmRA 113.00
PmDE -20.0 Calc delta mag 3.88 Calc coord yes
 
 
13239+5456 F
 
 
Coord arcsec 2000 132339.13+574208.5 Mag 9.86 Spectral class K5 (yellow-orange) PmRA 119.00
PmDE -20.0 Calc delta mag 6.86 Calc coord yes
 
 
13239+5456 G
 
 
Coord arcsec 2000 131406.96+550211.1 Mag 8.21 Spectral class K2V (yellow-orange) PmRA 108.00
PmDE -1.0 Calc delta mag 5.21 Calc coord yes
 
 
13239+5456 H
 
 
Coord arcsec 2000 131519.00+534352.3 Mag 8.63 Spectral class K0V (yellow-orange) PmRA 109.00
PmDE -5.0 Calc delta mag 5.63 Calc coord yes