15278+2906 JEF 1 (Nusakan)

 
 
15h 27m 49.85s +29° 06' 19.8" P.A. 140.00 sep 0.3 mag 3.68,5.20 Sp A5+F2 dist. 34.28 pc (111.82 l.y.)
 
 
Coord 2000 15278+2906 Discov num JEF   1 Comp Coord arcsec 2000 15 27 49.85 +29 06 19.8
Date first 1973 Date last 2019 Obs 192
Pa first 158 Pa last 139.9 P.A. Now (θ) 306.4°
Sep first 0.2 Sep last 0.272 Sep. Now (ρ) 0.077"
Mag pri 3.68 Mag sec 5.20 delta mag (ΔM) 1.52 Spectral class A5+F2 (white/yellow-white)
Pri motion ra -179 Sec motion ra
Pri motion dec +086 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Nusakan Constellation Corona Borealis SAO 83831 HIP 75695
Tycho2 2032-01605-1 Gaia DR2 1273423791418345344 HD 137909 HR 5747
GC 20795 BD BD+29 2670 Bayer Beta Coronae Borealis Bayer name Bet CrB
Flamsteed 3 Coronae Borealis Flamsteed name 3 CrB FK5 572 Distance 34.28
Distance ly 111.82 Bayer greek β CrB
Meaning the two series (sequences)
 
 
ORBITAL ELEMENTS
 
 
Period (P)3848.54d (10.54y)± 0.52 Periastron (T)44412.8m (1980.475y)± 1.4 Semi-major axis (a)204.008m± 0.034
Eccentricity (e)0.53971± 0.00021 Inclination (i)111.452°± 0.014 Longitude of periastron (ω)180.21°± 0.13
Node (Ω)148.041°± 0.03 Notesn ReferenceMut2010b
Equinox2000 Last observation2008 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 112.3 0.107
2001 4.5 0.064
2002 300.5 0.071
2003 187.4 0.097
2004 165.1 0.197
2005 157.0 0.266
2006 151.7 0.305
2007 147.2 0.314
2008 142.5 0.294
2009 136.5 0.244
2010 125.7 0.163
2011 80.7 0.062
2012 332.3 0.093
2013 237.8 0.053
2014 173.2 0.146
2015 160.7 0.233
2016 154.3 0.288
2017 149.5 0.312
2018 145.1 0.308
2019 140.0 0.274
2020 132.5 0.210
2021 114.9 0.115
2022 13.0 0.059
2023 306.4 0.077
2024 191.1 0.090
2025 166.0 0.191
2026 157.4 0.262
2027 152.0 0.303
2028 147.5 0.314
2029 142.8 0.296
2030 137.0 0.249


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



 
 


wds15278%2B2906a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 15278+2906 JEF 1 (Nusakan) : NOTES
 
 
discov_num notes refcode
JEF 1 bet CrB = 3 CrB = Nusakan. A spectroscopic binary resolved visually,
and avariable of Alpha CVn-type.
1973.22, 1973.45: See discussion and orbital elements by Labeyrie et
al. (1974). Lab1974
1975.383, 1975.455: The observations presented here are of poor
quality but the results are consistent with those of Labeyrie et al.
and McAlister. BLM1978
1980.4682: See preliminary elements and discussion in Balega et al.
(1984). Bag1984b
1983.3206: A peculiar SB with a 10.5-year period. Bag1984a
1984.1867 and other observations through 1985.2440: The speckle
interferometric observations are in good agreement with both Balega et Bag1984b
al. (1984) and Tokovinin (1984) orbits; radial velocity measurements Tok1984
are strongly needed to improve the spectroscopic orbit of this system. Bnu1986
Measure of 1988.256 made by MAPPIT. Naj1989
The speckle observations and derived masses leave no room for a
conjectured third component, cf. Kamper et al. (1990). Kpr1990
Hipparcos astrometric solution adopted some elements from the orbit of HIP1997d
Kamper et al. (1990).
Based on combined observations from VLT/Naco and CHARA/FLOUR, Bruntt
et al. (2010) derive the following parameters for the components of Bnt2010
bet CrB: radii 2.63 +/- 0.09 and 1.56 +/- 0.07 Rsun, spectral types A5
and F2, luminosities 25.2 +/- 2.9 and 4.5 +/- 0.05 Lsun, Teff 7980 +/-
180 and 6750 +/- 230K, masses 2.09 +/- 0.15 and 1.40 +/- 0.10 Msun.
The age of the systems is estimated at 0.53 +/- 0.10 Gyr.
Combined spectroscopic/astrometric solution of SB1. Radial velocities
span nearly a century. Calculated masses 1.71 +/- 0.18 and 1.330 +/-
0.074 Msun. Mut2010b
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 3.08 +/- 0.24, 4.09, and 3.17 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Bag1984a S j Balega, Y.Y. & Ryadchenko, V.P. 1984SvAL...10...95B
Bag1984a SvAL 10, 95, 1984
Bag1984b S j Balega, Y.Y., Bonneau, D., & Foy, R 1984A&AS...57...31B
Bag1984b A&AS 57, 31, 1984
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Bnt2010 Ao j Bruntt, H., Kervella, P., Merand, A., Brandao, I.M., Bedding, T.R., 2010A&A...512A..55B
Bnt2010 ten Brummelaar, T.A., Coude Du Foresto, V., Cunha, M.S., et al.
Bnt2010 A&A 512, 55, 2010
Bnu1986 S j Bonneau, D., Balega, Y., Blazit, A, Foy, R., Vakili, F., & Vidal, J.L. 1986A&AS...65...27B
Bnu1986 A&AS 65, 27, 1986
HIP1997d orb - Hipparcos 1997yCat.1239....0E
HIP1997d Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d (DMSA/O Orbital Solutions)
Kpr1990 orb - Kamper, K.W., McAlister, H.A., & Hartkopf, W.I. 1990AJ....100..239K
Kpr1990 AJ 100, 239, 1990
Lab1974 S j Labeyrie, A., Bonneau, D., Stachnik, R.V., & Gezari, D.Y. 1974ApJ...194L.147L
Lab1974 +orb ApJ 194, L147, 1974
Lab1974 (data from Hale 5m, KPNO 3.8m, 2.1m. Aperture listed as mean value of 3.6m unless
Lab1974 specifically given in paper)
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
Naj1989 Sa j Nakajima, T., Kulkarni, S.R., Gorham, P.W., Ghez, A.M., Neugebauer, G., Oke, J.B., 1989AJ.....97.1510N
Naj1989 Prince, T.A., & Readhead, A.C.S.
Naj1989 AJ 97, 1510, 1989
Tok1984 orb - Tokovinin, A.A. 1984SvAL...10..121T
Tok1984 SvAL 10, 121, 1984
 
 
DISCOVERER
 
 
idgroup discov author
1 JEF Jeffers, H.M.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15278+2906 JEF 1 2005 105 154 0.2 3.68 5.20 F0p NOD 152749.85+290619.8
15278+2906 JEF 1 2007 106 142 0.3 3.68 5.20 F0p NOD 152749.85+290619.8
15278+2906 JEF 1 2008 108 140 0.3 3.68 5.20 A5 F2 NOD 152749.85+290619.8
15278+2906 JEF 1 2009 182 131 0.2 3.68 5.20 A5 F2 NOD 152749.85+290619.8
15278+2906 JEF 1 2010 184 123 0.1 3.68 5.20 A5 F2 NO 152749.85+290619.8
15278+2906 JEF 1 2012 189 327 0.1 3.68 5.20 A5+F2 NO 152749.85+290619.8
15278+2906 JEF 1 2019 192 140 0.3 3.68 5.20 A5+F2 NO 152749.85+290619.8

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

 
 
WDS 15278+2906 JEF 1 (Nusakan) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 15278+2906 JEF 1 (Nusakan) : MEASURES
 
 
No records found.

 
 
WDS 15278+2906 (Nusakan) : VIRTUAL EYEPIECE
 
 

15278+2906 JEF   1A mag 3.68 Sp A5 15278+2906 JEF   1B sep 0.3 P.A. 143.70 mag 5.2 Sp F2 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 15278+2906 (Nusakan) : ALADIN DSS IMAGE @ 15h 27m 49.85s +29° 06' 19.8"
 
 
 
 
WDS 15278+2906 JEF 1 (Nusakan) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


15278+2906  JEF   1 (Nusakan) distance=0' 15279+2902  TDS9523 distance=5' 15283+2920  CVR 166 distance=16' 15298+2857  YSC 223 distance=28' 15268+2840  COU 484 distance=30' 15283+2943  KZA  91 distance=37' 15308+2913  CVR 789BC distance=40' 15248+2934  KZA  87 distance=49' 15242+2920  CVR1627 distance=50' 15269+2955  TDS9520 distance=50' 15319+2851  TSN 173 distance=56' 15295+2959  KPP 834 distance=57' 15232+2909  TDS9502 distance=61' 15266+3008  WIS 286 distance=64' 15275+3012  CVR1631 distance=67' 15307+2805  COU 796 distance=71' 15241+2814  TDS9506 distance=72' 15266+2749  UC 3004 distance=79' 15255+3020  KZA  88 distance=80' 15335+2936  TDS9548 distance=81' 15238+3007  KZA  86 distance=81' 15215+2933  LDS4546 distance=88' 15259+3031  KZA  89 distance=88' 15311+2747  J  3321 distance=92' 15303+2739  STF1951 distance=93' 15232+3017  STF1937AB distance=94' 15232+3017  KIR   4AB,E distance=94' 15232+3017  STF1937AB,C distance=94' 15232+3017  STF1937AB,D distance=94' 15347+2938  TDS9550 distance=96' 15219+2807  GIC 127AB distance=98' 15219+2807  LMP  10AC distance=98' 15219+2807  LMP  10AD distance=98' 15252+2734  AZC  90 distance=99' 15201+2937  ENG  53 distance=106' 15197+2859  LDS5170 distance=108' 15356+2944  TDS9557 distance=108' 15268+2719  AZC  91 distance=109' 15362+2912  TDS9558 distance=110' 15358+2823  HO   63 distance=114' 15288+3101  A  1369AB distance=116' 15288+3101  A  1369AC distance=116' 15274+3102  KZA  90 distance=116' 15364+2838  WIS 289 distance=116' 15268+3102  TDS9517 distance=117' 15189+2915  LDS5168 distance=119' 15239+3053  LDS4548 distance=119' 15195+2952  KZA  78 distance=119' 15212+2745  LDS4544 distance=120' 15205+3021  TDS9495 distance=121' 15228+3049  KZA  85 distance=122' 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 Nusakan 15278+2906 JEF 1 140 0.3
Show 15279+2902 TDS9523 52 1.2 5
Show 15283+2920 CVR 166 57 13.0 16
Show 15298+2857 YSC 223 258 0.3 28
Show 15268+2840 COU 484 83 0.3 30
Show 15283+2943 KZA 91 215 30.9 37
Show 15308+2913 CVR 789 BC 170 8.2 40
Show 15248+2934 KZA 87 359 11.7 49
Show 15242+2920 CVR1627 53 3.5 50
Show 15269+2955 TDS9520 308 0.6 50
Show 15319+2851 TSN 173 13 0.1 56
Show 15295+2959 KPP 834 164 7.1 57
Show 15232+2909 TDS9502 288 0.7 61
Show 15266+3008 WIS 286 240 876.7 64
Show 15275+3012 CVR1631 190 3.8 67
Show 15307+2805 COU 796 112 0.4 71
Show 15241+2814 TDS9506 31 0.4 72
Show 15266+2749 UC 3004 130 6.8 79
Show 15255+3020 KZA 88 115 50.4 80
Show 15335+2936 TDS9548 186 0.6 81
Show 15238+3007 KZA 86 21 22.0 81
Show 15215+2933 LDS4546 88 333.3 88
Show 15259+3031 KZA 89 244 41.4 88
Show 15311+2747 J 3321 228 4.4 92
Show 15303+2739 STF1951 293 17.4 93
Show 15232+3017 STF1937 AB 287 0.4 94
Show 15232+3017 KIR 4 AB,E 137 193.6 94
Show 15232+3017 STF1937 AB,C 358 75.1 94
Show 15232+3017 STF1937 AB,D 40 217.9 94
Show 15347+2938 TDS9550 103 0.8 96
Show 15219+2807 GIC 127 AB 255 212.7 98
Show 15219+2807 LMP 10 AC 240 87.9 98
Show 15219+2807 LMP 10 AD 262 132.9 98
Show 15252+2734 AZC 90 130 7.8 99
Show 15201+2937 ENG 53 343 144.1 106
Show 15197+2859 LDS5170 270 31.2 108
Show 15356+2944 TDS9557 346 0.4 108
Show 15268+2719 AZC 91 257 13.7 109
Show 15362+2912 TDS9558 212 0.4 110
Show 15358+2823 HO 63 311 1.5 114
Show 15288+3101 A 1369 AB 316 4.2 116
Show 15288+3101 A 1369 AC 259 73.4 116
Show 15274+3102 KZA 90 298 19.9 116
Show 15364+2838 WIS 289 1 999.9 116
Show 15268+3102 TDS9517 105 0.6 117
Show 15189+2915 LDS5168 193 62.7 119
Show 15239+3053 LDS4548 111 79.2 119
Show 15195+2952 KZA 78 18 42.6 119
Show 15212+2745 LDS4544 184 59.6 120
Show 15205+3021 TDS9495 73 0.6 121
Show 15228+3049 KZA 85 11 25.9 122

 
 
WDS 15278+2906 : COMPONENTS
 
 
  A
B pa=143.7°
sep=0.26"
 
 
15278+2906 A
 
 
Componente originario normalizzato AB Common name Nusakan Meaning the two series (sequences) Coord arcsec 2000 152749.85+290619.8
Mag 3.68 Spectral class A5 (white) PmRA -179.00 PmDE 86.0
SAO 83831 HIP 75695 Tycho2 2032-01605-1 HD 137909
HR 5747 GC 20795 BD BD+29 2670 Bayer Beta Coronae Borealis
Bayer name Bet CrB Flamsteed 3 Coronae Borealis Flamsteed name 3 CrB FK5 572
Tycho2
Tycho2 2032-01605-1 Pflag RAmdeg 231.95721428 DEmdeg 29.10569774
PmRA -181.5 PmDE 85.2 E RAmdeg 3 E DEmdeg 3
E pmRA 0.6 E pmDE 0.5 EpRAm 1991.28 EpDEm 1991.33
Num 22 Q RAmdeg 1.3 Q DEmdeg 1.0 Q pmRA 1.2
Q pmDE 1.2 BTmag 3.990 E BTmag 0.014 VTmag 3.672
E VTmag 0.009 Prox 999 TYC T HIP 75695
CCDM RAdeg 231.95769139 DEdeg 29.10550250 EpRA 1990 1.74
EpDE 1990 1.76 E RAdeg 3.2 E DEdeg 3.1 Posflg
Corr -0.1
SAO
SAO 83831 DelFlag RA1950 PmRA1950 -0.0137
DE1950 PmDE1950 0.083 Vmag 3.7 SpType F0p
Double code Source 74 CatNum 572 DM BD+29 2670
DMcomp BDsup HD 137909 M HD 0
GC 20795 RA1950rad 4.03941502 DE1950rad 0.51098034 PmRA2000 -0.0135
PmDE2000 0.085
Hipparcos
Catalog H HIP 75695 Proxy RAhms 15 27 49.85
DEdms +29 06 19.8 Vmag 3.66 VarFlag 1 R Vmag H
RAdeg 231.958 DEdeg 29.1055 AstroRef + Plx 28.6
CCDM 15278+2906 N CCDM I Nsys 1 Ncomp 1
MultFlag O Source Qual M HIP
Theta Rho HD 137909 BD BD+29 2670
CD CP Dm number +29 2670 VIred 0.35
SpType F0p R SpType Coord arcsec 2000 152749.85+290619.8
Hipparcos 2
HIP 75695 Sn 75 So 4 Nc 1
RArad 4.0484258681 DErad 0.5079866628 Plx 29.17 PmRA -180.17
PmDE 85.92 E RArad 0.38 E DErad 0.51 E Plx 0.76
E pmRA 0.4 E pmDE 0.64 Hpmag 3.7373 E Hpmag 0.0006
SHp 0.007 VA 1 BV 0.319 E BV 0.002
VI 0.37
CCDM
Ccdm 15278+2906 RComp Comp A Note1
Note2 Discov num DRAs 1.74 DDEs 20.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 3.7 Sp F0 PmNote *
PmRA -180 PmDE 83 Dm number +29 2670 Cat1 BD
Name2 +29 1493 Cat2 AGK2/3 HD 137909 M HD
ADS BDS M ADS BDS N IDS IDS 15237N2927A
HIC 75695
 
 
15278+2906 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 152749.86+290619.6 Mag 5.2 Spectral class F2 (yellow-white)
Calc delta mag 1.52 Calc coord yes
CCDM
Ccdm 15278+2906 RComp Comp B Note1
Note2 Discov num JEF DRAs DDEs
R dRAs Year 1945 Theta 079 Rho 0.1
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N N IDS IDS 15237N2927B
HIC 75695