Coord 2000 | 15245+3723 | Discov num | STF1938 | Comp | Ba,Bb | Coord arcsec 2000 | 15 24 30.89 +37 20 52.5 | ||||
Date first | 1823 | Date last | 2020 | Obs | 763 | ||||||
Pa first | 333 | Pa last | 2.1 | P.A. Now (θ) | 1° | ||||||
Sep first | 1.8 | Sep last | 2.2 | Sep. Now (ρ) | 2.187" | ||||||
Mag pri | 7.09 | Mag sec | 7.63 | delta mag (ΔM) | 0.54 | Spectral class | G0V (yellow) | ||||
Pri motion ra | -154 | Sec motion ra | -151 | ||||||||
Pri motion dec | +092 | Sec motion dec | +087 | ||||||||
Notes | N O (See Notes, Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 64686 | 15 24 30 +37 22 37 | CHR 181 Aa,Ab | 2012 | 47 | 188 | 0.1 | 4.31 | Y | ||||
Show | Alkalurops | 64686 | 15 24 30 +37 22 37 | STFA 28 AB | 2020 | 154 | 171 | 109.2 | 4.33 | 7.09 | 2.76 | ||
Show | 64687 | 15 24 31 +37 20 52 | STF 1938 Ba,Bb | 2020 | 763 | 2 | 2.2 | 7.09 | 7.63 | 0.54 | Y | <=== |
Constellation | Bootes | SAO | 64687 | HIP | 75415 | Tycho2 | 2570-01518-1 | ||||
Gaia DR2 | 1387349065960639232 | HD | 137392 | HR | 5734 | GC | 20725 | ||||
ADS | 9626 | GL | NN 3904B | BD | BD+37 2637 | Bayer | Mu 2 Bootis | ||||
Bayer name | Mu2 Boo | Flamsteed | 51 Bootis | Flamsteed name | 51 Boo | Distance | 36.06 | ||||
Distance ly | 117.63 | Bayer greek | μ2 Boo |
Period (P) | 256.5y | Periastron (T) | 1864.25y | Semi-major axis (a) | 1.45a | |||
Eccentricity (e) | 0.579 | Inclination (i) | 134.2° | Longitude of periastron (ω) | 338.7° | |||
Node (Ω) | 176.2° | Notes | n | Reference | Sca2013a | |||
Equinox | 2000 | Last observation | 2012 | Grade | 2 | (1=Definitive, 9=Indet.) |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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discov_num | notes | refcode |
CHR 181 | Aa,Ab: mu 1 Boo = 51 Boo A = Alkalurops. SB, P=298.75d. | |
More speckle observations are needed to confirm preliminary orbit. | ||
Aa,Ab: Calculated mass sum is 3.24 +/- 0.23 Msun. Absorption lines too | ||
broad and blended for RV measurements. | Mut2010b | |
Aa,Ab: Orbital elements provided in Guerrero et al. (2021) match | Gur2021 | |
measures and previous orbits of STF1938Ba,Bb. The orbit is therefore | ||
attributed to STF1938Ba,Bb in ORB6. | ||
STF1938 | Ba,Bb: mu 2 Boo = 51 Boo B. | |
See Baize & Petit (1989) catalog of doubles with variable component. | Baz1989d | |
STFA 28 | AB: HJL 221. | HJL1986 |
AB: H 6 17. STF1938Ba,Bb: H 1 17. | MEv2010 | |
AB: SHY 275. Bayesian analysis by Shaya & Olling (2011) indicates very | ||
high (near 100%) probability pair is physical. | Shy2011 | |
AB: Kiyaeva et al. (2014) find probably significant differences in the | ||
elemental abundances of the Aa,Ab and Ba,Bb subsystems, and suggest | ||
this quadruple is instead a close passage of two separate binaries. | Kiy2014 |
refcode | metd | author | reference |
Baz1989d | - | Baize, P. & Petit, M. | 1989A&AS...77..497B |
Baz1989d | A&AS 77, 497, 1989 | ||
Gur2021 | S+ j | Guerrero, C.A., Zepeda, C.E., Souza, T.B., Najera, M.R., Borges Fernandes, M., | 2021AJ....161..253G |
Gur2021 | +orb | Hernandez-Aguila, J.B., Carvajal, J.C., Castro-Chacon, J.H., Hernandez-Valencia, B., | |
Gur2021 | +not | Reyes-Ruiz, M., Sanchez, E. & Silva, J.S. | |
Gur2021 | AJ 161, 253, 2021 | ||
HJL1986 | Pa - | Halbwachs, J.L. | 1986A&AS...66..131H |
HJL1986 | A&AS 66, 131, 1986 | ||
HJL1986 | (Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added | ||
HJL1986 | only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113) | ||
Kiy2014 | Po u | Kiyaeva, O.V., Zhuchkov, R.Ya., Malogolovets, E.V., Orlov, V.V., Glukhova, A.V., | 2014ARep...58..835K |
Kiy2014 | +S | Balega, Yu., Yu. & Bikmaev, I.F. | |
Kiy2014 | +orb | ARep 58, 835, 2014 (SvA 91, 943, 2014) | |
MEv2010 | - | MacEvoy, B. | ................... |
MEv2010 | private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) | ||
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 | ||
Sca2013a | orb - | Scardia, M., Prieur, J.-L., Pansecchi, L., & Argyle, R.W. | 2013IAUDS.179....1S |
Sca2013a | Inf. Circ. 179, 1, 2013 | ||
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.) |
idgroup | discov | author |
1 | CHR | Center for High Ang. Res. Astronomy (speckle interferometry systems) |
3 | STF | Struve, F.G.W. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
15245+3723 | STF1938 | Ba,Bb | 2007 | 709 | 6 | 2.2 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2008 | 711 | 6 | 2.2 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2009 | 712 | 6 | 2.2 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2010 | 718 | 6 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2011 | 723 | 6 | 2.4 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2013 | 736 | 5 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2014 | 728 | 4 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2015 | 731 | 3 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.97+372049.5 |
15245+3723 | STF1938 | Ba,Bb | 2016 | 743 | 4 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.89+372052.5 |
15245+3723 | STF1938 | Ba,Bb | 2017 | 745 | 3 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.89+372052.5 |
15245+3723 | STF1938 | Ba,Bb | 2018 | 751 | 4 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.89+372052.5 |
15245+3723 | STF1938 | Ba,Bb | 2019 | 757 | 3 | 2.3 | 7.09 | 7.63 | G0V | NO | 152430.89+372052.5 |
15245+3723 | STF1938 | Ba,Bb | 2020 | 762 | 2 | 2.2 | 7.09 | 7.63 | G0V | NO | 152430.89+372052.5 |
Show | date | username | difficulty | separation | pa_estim | interest ⇓ | notes |
Show | 23/06/16 | Daedalus1 | mean difficulty | separated | 2 | Yellow-white stars; primary is slightly brighter. |
Show | date | username | difficulty | sep | sep_sigma | pa | pa_sigma | delta_mag | # | notes |
Show | 23/06/16 | Daedalus1 | mean difficulty | 2.27 | 0.07 | 2.00 | 0.00 | 0.53 | 12 | Seeing: Pickering 7, good |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | Ab | B | |
Ab | pa=186.2° sep=0.07" | ||
B | pa=171.3° sep=105.83" | pa=171.2° sep=105.76" | |
Bb | pa=171.0° sep=103.67" | pa=171.0° sep=103.60" | pa=1.7° sep=2.20" |
Common name | Alkalurops | Meaning | crook | Other names | INKALUNIS, ICALURUS, CLAVA, VENABULUM | Coord arcsec 2000 | 152429.54+372237.1 | ||||
Mag | 4.33 | Spectral class | F2IVa (yellow-white) | PmRA | -147.00 | PmDE | 80.0 | ||||
SAO | 64686 | HIP | 75411 | Tycho2 | 2570-01521-1 | HD | 137391 | ||||
HR | 5733 | GC | 20724 | BD | BD+37 2636 | Bayer | Mu 1 Bootis | ||||
Bayer name | Mu1 Boo | Flamsteed | 51 Bootis | Flamsteed name | 51 Boo | FK5 | 568 |
Tycho2 | 2570-01521-1 | Pflag | RAmdeg | 231.12261791 | DEmdeg | 37.37716970 | |||||
PmRA | -146.9 | PmDE | 85.5 | E RAmdeg | 3 | E DEmdeg | 3 | ||||
E pmRA | 0.6 | E pmDE | 0.7 | EpRAm | 1991.19 | EpDEm | 1991.35 | ||||
Num | 20 | Q RAmdeg | 1.0 | Q DEmdeg | 1.7 | Q pmRA | 1.0 | ||||
Q pmDE | 1.7 | BTmag | 4.667 | E BTmag | 0.014 | VTmag | 4.334 | ||||
E VTmag | 0.009 | Prox | 999 | TYC | T | HIP | 75411 | ||||
CCDM | RAdeg | 231.12304972 | DEdeg | 37.37697139 | EpRA 1990 | 1.59 | |||||
EpDE 1990 | 1.65 | E RAdeg | 3.3 | E DEdeg | 3.3 | Posflg | |||||
Corr | -0.2 |
SAO | 64686 | DelFlag | RA1950 | PmRA1950 | -0.0124 | ||||||
DE1950 | PmDE1950 | 0.084 | Vmag | 4.5 | SpType | F0 | |||||
Double code | Source | 74 | CatNum | 568 | DM | BD+37 2636 | |||||
DMcomp | BDsup | HD | 137391 | M HD | 0 | ||||||
GC | 20724 | RA1950rad | 4.02560153 | DE1950rad | 0.65539774 | PmRA2000 | -0.0121 | ||||
PmDE2000 | 0.087 |
Catalog | H | HIP | 75411 | Proxy | RAhms | 15 24 29.54 | |||||
DEdms | +37 22 37.1 | Vmag | 4.31 | VarFlag | R Vmag | G | |||||
RAdeg | 231.123 | DEdeg | 37.377 | AstroRef | Plx | 26.96 | |||||
CCDM | 15245+3722 | N CCDM | I | Nsys | 2 | Ncomp | 1 | ||||
MultFlag | G | Source | Qual | M HIP | |||||||
Theta | Rho | HD | 137391 | BD | BD+37 2636 | ||||||
CD | CP | Dm number | +37 2636 | VIred | 0.35 | ||||||
SpType | F0V | R SpType | Coord arcsec 2000 | 152429.54+372237.1 |
HIP | 75411 | Sn | 1 | So | 1 | Nc | 1 | ||||
RArad | 4.0338584954 | DErad | 0.6523510313 | Plx | 28.83 | PmRA | -146.73 | ||||
PmDE | 79.85 | E RArad | 0.51 | E DErad | 0.59 | E Plx | 0.74 | ||||
E pmRA | 0.66 | E pmDE | 0.77 | Hpmag | 4.3826 | E Hpmag | 0.0005 | ||||
SHp | 0.005 | VA | 0 | BV | 0.309 | E BV | 0.008 | ||||
VI | 0.35 |
Coord arcsec 2000 | 152429.54+372237.0 | Calc delta mag | 4.31 | Calc coord | yes |
Coord arcsec 2000 | 152430.89+372052.5 | Coord calc | 152430.70+372049.3 | Mag | 7.09 | Mag composta | 7.09 | ||||
Spectral class | G0V (yellow) | PmRA | -154.00 | PmDE | 92.0 | SAO | 64687 | ||||
HIP | 75415 | Tycho2 | 2570-01518-1 | HD | 137392 | HR | 5734 | ||||
GC | 20725 | BD | BD+37 2637 | Bayer | Mu 2 Bootis | Bayer name | Mu2 Boo | ||||
Flamsteed | 51 Bootis | Flamsteed name | 51 Boo | Calc delta mag | 2.78 |
Tycho2 | 2570-01518-1 | Pflag | P | RAmdeg | 231.12862441 | DEmdeg | 37.34747199 | ||||
PmRA | -151.3 | PmDE | 86.9 | E RAmdeg | 4 | E DEmdeg | 5 | ||||
E pmRA | 2.9 | E pmDE | 2.8 | EpRAm | 1991.62 | EpDEm | 1991.52 | ||||
Num | 3 | Q RAmdeg | 3.2 | Q DEmdeg | 0.2 | Q pmRA | 3.3 | ||||
Q pmDE | 0.1 | BTmag | 7.731 | E BTmag | 0.016 | VTmag | 7.092 | ||||
E VTmag | 0.010 | Prox | 22 | TYC | T | HIP | 75415 | ||||
CCDM | B | RAdeg | 231.12902222 | DEdeg | 37.34710306 | EpRA 1990 | 1.65 | ||||
EpDE 1990 | 1.57 | E RAdeg | 4.3 | E DEdeg | 4.5 | Posflg | D | ||||
Corr | -0.2 |
SAO | 64687 | DelFlag | RA1950 | PmRA1950 | -0.0124 | ||||||
DE1950 | PmDE1950 | 0.091 | Vmag | 6.7 | SpType | K0 | |||||
Double code | Source | 70 | CatNum | 20725 | DM | BD+37 2637 | |||||
DMcomp | BDsup | HD | 137392 | M HD | 0 | ||||||
GC | 20725 | RA1950rad | 4.02570389 | DE1950rad | 0.65488093 | PmRA2000 | -0.0121 | ||||
PmDE2000 | 0.094 |
Catalog | H | HIP | 75415 | Proxy | H | RAhms | 15 24 30.97 | ||||
DEdms | +37 20 49.5 | Vmag | 6.51 | VarFlag | R Vmag | G | |||||
RAdeg | 231.129 | DEdeg | 37.3471 | AstroRef | B | Plx | 26.82 | ||||
CCDM | 15245+3722 | N CCDM | I | Nsys | 2 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | BC | |||||
Theta | 12 | Rho | 2.232 | HD | 137392 | BD | BD+37 2637 | ||||
CD | CP | Dm number | +37 2637 | VIred | 0.64 | ||||||
SpType | G1V | R SpType | Coord arcsec 2000 | 152430.97+372049.5 |
HIP | 75415 | Sn | 15 | So | 3 | Nc | 2 | ||||
RArad | 4.0339627643 | DErad | 0.6518297443 | Plx | 27.73 | PmRA | -140.08 | ||||
PmDE | 84.78 | E RArad | 0.41 | E DErad | 0.55 | E Plx | 0.65 | ||||
E pmRA | 0.57 | E pmDE | 0.83 | Hpmag | 6.6404 | E Hpmag | 0.0008 | ||||
SHp | 0.01 | VA | 0 | BV | 0.6 | E BV | 0.042 | ||||
VI | 0.64 |
Coord arcsec 2000 | 152430.90+372054.7 | Mag | 7.63 | PmRA | -151.00 | PmDE | 87.0 | ||||
Calc delta mag | 3.32 | Calc coord | yes |