Coord 2000 | 11551+4629 | Discov num | STF1579 | Comp | AB,C | Coord arcsec 2000 | 11 55 05.74 +46 28 36.6 | ||||
Date first | 1782 | Date last | 2021 | Obs | 87 | ||||||
Pa first | 36 | Pa last | 43.7 | P.A. Now (θ) | 43.7° | ||||||
Sep first | 4.0 | Sep last | 3.72 | Sep. Now (ρ) | 3.72" | ||||||
Mag pri | 6.68 | Mag sec | 8.32 | delta mag (ΔM) | 1.64 | Spectral class | A3Vn (white) | ||||
Pri motion ra | +010 | Sec motion ra | +010 | ||||||||
Pri motion dec | +003 | Sec motion dec | +003 | ||||||||
Notes | N U (See Notes, Proper motion indicates non-physical) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 43945 | 11 55 06 +46 28 37 | A 1777 AB | 2019 | 39 | 358 | 0.3 | 6.50 | 9.00 | 2.50 | Y | ||
Show | 65 UMa | 43945 | 11 55 06 +46 28 37 | STF 1579 AB,C | 2021 | 87 | 44 | 3.7 | 6.68 | 8.32 | 1.64 | <=== | |
Show | 43945 | 11 55 06 +46 28 37 | STF 1579 AB,D | 2021 | 73 | 114 | 62.9 | 6.68 | 6.97 | 0.29 | |||
Show | 43946 | 11 55 06 +46 28 40 | STF 1579 CD | 2018 | 14 | 117 | 61.9 | 8.32 | 6.97 | 1.35 | |||
Show | 43946 | 11 55 11 +46 28 11 | BAG 46 Da,Db | 2018 | 4 | 326 | 0.1 | 7.10 | 9.20 | 2.10 |
Name | 65 UMa | Var name | DN UMa | Constellation | Ursa Major | SAO | 43945 | ||||
HIP | 58112 | Tycho2 | 3452-02143-2 | Gaia DR2 | 774274752546451840 | HD | 103483 | ||||
HR | 4560 | GC | 16296 | ADS | 8347 | BD | BD+47 1913 | ||||
Flamsteed | 65 Ursae Majoris | Flamsteed name | 65 UMa | Distance | 211.86 | Distance ly | 691.09 |
discov_num | notes | refcode |
A 1777 | 65 UMa. The primary is the eclipsing binary DN UMa, | |
See Baize & Petit (1989) catalog of doubles with variable component. | Baz1989d | |
Discrepant 1995.3159 speckle measure found not due to a typographical | Hrt1997 | |
error in theta, following reexamination of original data by authors. | ||
Presumably there was an identification error while pointing telescope, | ||
although no probable match to known close pairs in the vicinity has | ||
been found. | ||
65 UMa | After subtracting out the effects of the 118y AB pair, Zasche et al. | |
(2012) find a 640d variation, which they attribute to a closer Aa,Ab | ||
pair. The 1.7d eclipsing pair DN UMa, then, is assumed to be Aa1,Aa2. | ||
Their analysis determines a distance 234 +/- 29 pc to the system | ||
(compared with 212 +/- 30 pc from the revised Hipparcos reduction of | ||
van Leeuwen 2007), a and total mass of 8.25 +/- 1.85 Msun. Derived | vlF2007 | |
spectral types, masses, and radii of the components are as follows: | ||
Aa1 A7 1.74 +/- 0.06 Msun 1.86 +/- 0.08 Rsun | ||
Aa2 A7 1.71 0.06 1.81 0.08 | ||
Ab A1 2.4 0.4 | ||
B 2.4 2.0 | Zas2012b | |
STF1579 | STTA113 = STFA 20. | |
AB,C: H 1 72. | MEv2010 | |
May be a physical septuple: the 1.7d eclipsing pair (2), the 640d | ||
spectroscopic component (+1), the 118y resolved pair A 1777 (+1) | ||
and the wider cpm pair (+1) STF1579AB,D. STF1579AB,C also has similar | ||
proper motion and may be physical and the D component has been split | ||
interferometrically (BAG 46Da,Db). |
refcode | metd | author | reference |
Baz1989d | - | Baize, P. & Petit, M. | 1989A&AS...77..497B |
Baz1989d | A&AS 77, 497, 1989 | ||
Hrt1997 | Sc j | Hartkopf, W.I., McAlister, H.A., Mason, B.D., ten Brummelaar, T.A., Roberts, J.C., | 1997AJ....114.1639H |
Hrt1997 | Jr., Turner, N.H., & Wilson, J.W. | ||
Hrt1997 | AJ 114, 1639, 1997 | ||
MEv2010 | - | MacEvoy, B. | ................... |
MEv2010 | private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) | ||
VlF2007 | - | van Leeuwen, F. | 2007A&A...474..653V |
VlF2007 | A&A 474, 653, 2007 | ||
Zas2012b | orb - | Zasche, P., Uhlar, R., Slechta, M., Wolf, M., Harmanec, P., Nemravova, J.A., & | 2012A&A...542A..78Z |
Zas2012b | Korcakova, D. | ||
Zas2012b | A&A 542, A78, 2012 |
idgroup | discov | author |
1 | A | Aitken, R.G. |
312 | BAG | Balega, Y.Y. & Tikhonov, N.A. |
335 | BAG | Balega, I.I., Balega, Y.Y., Belkin, I.N., Maximov, A.F., Orlov, V.G., Pluzhnik, |
335 | BAG | E.A., Shkhagosheva, Z.U., & Vasyuk, V.A. |
336 | BAG | Balega, I.I., Balega, Yu.Yu., Falcke, H., Osterbart, R., Reinheimer, T., Scholler, |
336 | BAG | M., & Weigelt, G. |
341 | BAG | Balega, I.I., Balega, Y.Y., Maksimov, A.F., Pluzhnik, E.A., Shkhagosheva, Z.U., & |
341 | BAG | Vasyuk, V.A. |
346 | BAG | Balega, I.I., Balega, Yu.Yu., Hofmann, K.-H., Maksimov, A.F., Pluzhnik, E.A., |
346 | BAG | Schertl, D., Shkhagosheva, Z.U., & Weigelt, G. |
349 | BAG | Balega, I.I., Balega, Y.Y., Maksimov, A.F., Pluzhnik, E.A., Schertl, D., |
349 | BAG | Shkhagosheva, Z.U., & Weigelt, G. |
352 | BAG | Balega, I.I., Balega, Y.Y., Hofmann, K.-H., Pluzhnik, E.A., Schertl, D., |
352 | BAG | Shkhagosheva, Z.U., & Weigelt, G. |
355 | BAG | Balega, I.I., Balega, Y.Y., Hoffmann, K.-H., Malogolovets, E., Schertl, D., |
355 | BAG | Shkhagosheva, Z.U., & Weigelt, G. |
357 | BAG | Balega, I.I., Balega, Yu.Yu., Maksimov, A.F., Malogolovets, E.V., Pluzhnik, E.A., |
357 | BAG | & Shkhagosheva, Z. |
358 | BAG | Balega, Y.Y., Beuzit, J.-L., Delfosse, X., Forveille, T., Perrier, C., Mayor, M., |
358 | BAG | Segransan, D., Udry, S., et al. |
359 | BAG | Balega, I.I., Balega, Yu.Yu., Maksimov, A.F., Malogolovets, E.V., Rastegaev, D.A., |
359 | BAG | Shkhagosheva, Z.U., & Weigelt, G. |
366 | BAG | Balega, Yu.Yu., Dyachenko, V.V., Maksimov, A.F., & Malogolovets, E.V., |
366 | BAG | Rastegaev, D.A., & Romanyuk, I.I. |
367 | BAG | Balega, Yu.Yu., Dyachenko, V.V., Maksimov, A.F., & Malogolovets, E.V., |
367 | BAG | Rastegaev, D.A., & Romanyuk, I.I. |
368 | BAG | Balega, I.I., Balega, Yu.Yu., Gasanova, L.T., Dyachenko, V.V., Maksimov, A.F., |
368 | BAG | Malogolovets, E.V., Rastegaev, D.A., & Shkhagosheva, Z.U. |
371 | STF | Struve, F.G.W. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
11551+4629 | STF1579 | AB,C | 2009 | 64 | 42 | 3.9 | 6.68 | 8.32 | N D | 115505.74+462836.6 | |
11551+4629 | STF1579 | AB,C | 2012 | 67 | 42 | 3.9 | 6.68 | 8.32 | N D | 115505.74+462836.6 | |
11551+4629 | STF1579 | AB,C | 2014 | 78 | 42 | 3.9 | 6.68 | 8.32 | A3Vn | N | 115505.74+462836.6 |
11551+4629 | STF1579 | AB,C | 2017 | 80 | 42 | 3.9 | 6.68 | 8.32 | A3Vn | N | 115505.74+462836.6 |
11551+4629 | STF1579 | AB,C | 2019 | 84 | 43 | 3.9 | 6.68 | 8.32 | A3Vn | NU | 115505.74+462836.6 |
11551+4629 | STF1579 | AB,C | 2021 | 87 | 44 | 3.7 | 6.68 | 8.32 | A3Vn | NU | 115505.74+462836.6 |
Show | date | username | difficulty | separation | pa_estim | interest | notes |
Show | 23/05/30 | Daedalus1 | mean difficulty | separated | 43 | Very nice 2+1 configuration. Companion is blue-grey, Primary is much brighter. |
Show | date | username | difficulty | sep | sep_sigma | pa | pa_sigma | delta_mag | # | notes |
Show | 23/05/30 | Daedalus1 | mean difficulty | 3.77 | 0.08 | 43.00 | 0.00 | 1.63 | 12 | Seeing: Pickering 7, good |
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