discov_num |
notes |
refcode |
STF1744 |
A is zet UMa = Mizar. B is 80 UMa = Alcor. |
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Split by Benedetto Castelli. After resolving AD in |
C__1616 |
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1617 he wrote to his friend, Galileo, to observe the pair, "It's one of |
C__1617 |
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the beautiful things in the sky and I don't believe that in our pursuit |
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one could desire better." Galileo measured it in early 1617. See the |
G__1617 |
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excellent discussion of its discovery in Leos Ondra's July 2004 Sky & |
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Telescope article, from which Galileo's measure was extracted. It was |
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independently found double in 1650 by Jean Baptiste Riccioli in |
Ric1651 |
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Bologna: "There appears to be one star in the middle of the Great |
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Bear's tail, where there are actually two, as the telescope reveals." |
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This was also the first to be observed photographically, by John A. |
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Whipple with the Harvard 15inch on 27 April 1857. According to Aitken, |
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this was the first observed photographically (G.P. Bond at Harvard |
A__1935f |
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College Observatory in 1857 using an 8 second exposure on a collodion |
BdG1858 |
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plate), and the first spectroscopic binary discovered (E.C. Pickering |
Pck1890 |
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in 1889). A is a spectroscopic binary, P = 20.54d (first orbit 1901). |
Vog1901 |
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B is also a spectroscopic binary (first orbits 1908), P = 175.6d, |
XXX1908a |
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spectrum A1m or A1/A2/A7. Also, common proper motion with 80 UMa |
XXX1908b |
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80 UMa (Alcor) and other members of the Ursa Major stream. |
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AC: SHY 247. Bayesian analysis by Shaya & Olling (2011) indicates very |
Shy2011 |
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high (near 100%) probability pair is physical. |
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PEA 1 |
Mistakenly given the discoverer designation 'MKT 8' in the WDS, |
Pea1925 |
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but actually first resolved by Pease in 1925, six decades before the |
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Mark III interferometer measures. This system has completed some 1,350 |
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revolutions since its first resolution, probably a record for any |
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"visual" binary. |
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The orbit of Aa,Ab by Russell (1927) is combined interferometric/ |
Rus1927 |
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spectroscopic (double-lined spectrum). A small magnitude difference |
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(which would probably place the ascending node in the second quadrant) |
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is uncertain. |
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Star B (mag. 3.96, 15") is physical, and is itself a 175.55d SB1. |
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Visual orbit by Hummel et al. (1995) is based on astrometry from the |
MkT1995 |
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Mark III interferometer. Additional spectroscopic data yield component |
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masses, luminosities, radii, effective temperatures, and distance. |
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See Baize & Petit (1989) catalog of doubles with variable component. |
Baz1989d |
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Pourbaix gives combined solution for this resolved SB2, yielding |
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orbital parallaxes and component masses. |
Pbx2000b |
SMR 4 |
AD: This was the first component of Mizar split by Benedetto Castelli |
C__1616 |
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in late 1616. It was called "Sidus Ludoviciana" (Ludwig's Star) by |
XXX2004 |
|
Johann Georg Liebnecht for the Landgrave Ludwig of Hessen-Darmstadt |
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who thought he has discovered a planet. He was wrong. |
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SHY 247 |
AE: HIP 65378 + HIP 64532. E component = A component of 13136+5643 |
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= C component of 12487+6019. |
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SHY 247 |
AF: HIP 65378 + HIP 65327. F component = D component of 12417+5543. |
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SHY 248 |
CE: HIP 65477 + HIP 64532. |
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SHY 248 |
CF: HIP 65477 + HIP 65327. |
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SHY 248 |
CG: HIP 65477 + HIP 61100. G component = G component of 13136+5643. |
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SHY 248 |
CH: HIP 65477 + HIP 61481. |
|
STF1744 |
AB: H 3 2. |
MEv2010 |
refcode |
metd |
author |
reference |
A__1935f |
- |
Aitken, R.G. |
1935QB821.A3....... |
A__1935f |
|
The Binary Stars, 1935 |
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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 |
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(also see Ond2004) |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
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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 |
|
Pbx2000b |
orb - |
Pourbaix, D. |
2000A&AS..145..215P |
Pbx2000b |
|
A&AS 145, 215, 2000 |
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Pck1890 |
not - |
Pickering, E. |
1890SidM....9...80P |
Pck1890 |
|
Siderial Messenger 9, 80, 1890 |
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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.) |
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Vog1901 |
not - |
Vogel, H.C. |
1901ApJ....13..324V |
Vog1901 |
|
ApJ 13, 324, 1890 |
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XXX1908a |
not - |
Frost, E.B. |
1908AN....177..171F |
XXX1908a |
|
AN 177, 171, 1908 |
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XXX1908b |
not - |
Ludendorff, H. |
1908AN....177....7L |
XXX1908b |
|
AN 177, 7, 1908 |
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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/ |
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