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Doubles in session


Current system
12154+5702
JNN 240 AE


Nearby doubles
10' : 12162+5710
KPP3252

34' : 12185+5725
STI2280

43' : 12193+5730
SMH 16

50' : 12189+5622
STF1630

64' : 12079+5719
CVR1408

65' : 12225+5731
KPP3868

72' : 12193+5558
CVR 651

75' : 12094+5758
TDS8247

76' : 12232+5621
MLB 67

78' : 12066+5637
RAO 271

84' : 12222+5805
WNC 4

87' : 12050+5651
HDS1701

88' : 12149+5830
CVR 125

89' : 12056+5659
A 1358AB

91' : 12115+5827
SLW 691

93' : 12052+5624
TDS8216

100' : 12114+5837
LDS2634

104' : 12030+5726
UC 2258

105' : 12085+5535
LDS3040

106' : 12197+5523
HJ 2608

112' : 12147+5853
ES 1788

113' : 12081+5528
STF1603AB

116' : 12296+5656
LDS2644

116' : 12077+5841
ES 1787

116' : 12144+5506
HJ 2604

119' : 12030+5806
DEA 77



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

12154+5702 JNN 240 AE

 
 
12h 15m 25.45s +57° 01' 57.4" P.A. 169.00 sep 5.7 mag 3.31,19.30 Sp A2Vn dist. 24.69 pc (80.54 l.y.)
 
 
Coord 2000 12154+5702 Discov num JNN 240 Comp AE Coord arcsec 2000 12 15 25.45 +57 01 57.4
Date first 2010 Date last 2011 Obs 2
Pa first 167 Pa last 169.2 P.A. Now (θ) 169.2°
Sep first 5.7 Sep last 5.69 Sep. Now (ρ) 5.69"
Mag pri 3.31 Mag sec 19.30 delta mag (ΔM) 15.99 Spectral class A2Vn (white)
Pri motion ra +104 Sec motion ra
Pri motion dec +007 Sec motion dec
Notes N K (See Notes, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
12154+5702 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Megrez 28315 12 15 25 +57 01 57 BLL 29 AB 2020 17 75 181.9 3.30 10.21 6.91
Show 28315 12 15 25 +57 01 57 BUP 140 AC 2020 9 130 174.8 3.30 11.62 8.32
Show 28315 12 15 25 +57 01 57 JNN 240 AD 2011 2 113 3.3 3.31 18.40 15.09
Show 28315 12 15 25 +57 01 57 JNN 240 AE 2011 2 169 5.7 3.31 19.30 15.99 <===
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Megrez Var name NSV5513 UMa Constellation Ursa Major SAO 28315
HIP 59774 Tycho2 3837-01070-1 Gaia DR2 1575287046603149056 HD 106591
HR 4660 GC 16736 BD BD+57 1363 Bayer Delta Ursae Majoris
Bayer name Del UMa Flamsteed 69 Ursae Majoris Flamsteed name 69 UMa FK5 456
Distance 24.69 Distance ly 80.54 Bayer greek δ UMa
Other names KAFFA
Meaning insertion point
 
 
WDS 12154+5702 JNN 240 AE : NOTES
 
 
discov_num notes refcode
BLL 29 69 UMa = del UMa = Megrez. Smyth's quoted separation is difference in Smy1844
RA only.
 
 
REFERENCES
 
 
refcode metd author reference
Smy1844 Ma - Smyth, W.H. 1844QB43.S66.......
Smy1844 Cycle of Celestial Objects 2, 1844
 
 
DISCOVERER
 
 
discov author
BLL Ball, R.S.
JNN Janson, M., Brandner, W., Lenzen, R., Close, L., Nielsen, E., Hartung, M.,
JNN Henning, T., & Rouy, H.
JNN Janson, M., Carson, J., Thalmann, C., McElwain, M.W., Goto, M., Crepp, J.,
JNN Wisniewski, J., Abe, L., et al.
JNN Janson, M., Bonavita, M., Klahr, H., Lafreniere, D., Jayawardhana, R.,
JNN & Zinnecker, H.
JNN Janson, M., Hormuth, F., Bergfors, C., Brandner, W., Hippler, S., Daemgen, S.,
JNN Kudryavtseva, N., Schmalzl, E., Schnupp, C., & Henning, T.
JNN Janson, M., Jayawardhana, R., Girard, J.H., Lafreniere, D., Bonavita, M.,
JNN Gizis, J., & Brandeker, A.
JNN Janson, M., Lafreniere, D., Jayawardhana, R., Bonavita, M., Girard, J.H.,
JNN Brandeker, A., & Gizis, J.E.
JNN Janson, M., Brandt, T.D., Moro-Martin, A., Usuda, T., Thalmann, C., Carson, J.C.,
JNN Goto, M., Currie, T., McElwain, M.W., Itoh, Y., Fukagawa, M., Crepp, J., et al.
JNN Janson, M., Bergfors, C., Brandner, W., Kudryavtseva, N., Hormuth, F.,
JNN Hippler, S., & Henning, T.
JNN Janson, M., Bergfors, C., Brandner, W., Bonnefoy, M., Schlieder, J., Kohler, R.,
JNN Hormuth, F., Henning, T., & Hippler, S.
JNN Janson, M., Durkan, S., Hippler, S., Dai, X., Brandner, W., Schlieder, J.,
JNN Bonnefoy, M., & Henning, T. Jnn201
JNN Calissendorff, P., Janson, M., Kohler, R., Durkan, S., Hippler, S., Dai, X.,
JNN Brandner, W., Schlieder, J., & Henning, T.
JNN Janson, M., Durkan, S., Bonnefoy, M., Rodet, L., Kohler, R., Lacour, S., Brandner,
JNN Calissendorff, P., Janson, M. & Bonnefoy, M.
JNN Calissendorff, P., Janson, M., Rodet, L., Bonnefoy, M., Brandner, W., Brown-Sevilla,
JNN S., Chauvin, G., Delorme, P., Desidera, S., Durkan, S., Fontanive, C., Gratton, R.,
JNN Hagelbe3rg, J., Henning, T., Hippler, S., Lagrange, A.-M., Langlois, M., Lazzoni, C.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
12154+5702 JNN 240 AE 2011 2 169 5.7 3.31 19.30 A2Vn N K 121525.45+570157.4

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

 
 
WDS 12154+5702 JNN 240 AE : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 12154+5702 JNN 240 AE : MEASURES
 
 
No records found.

 
 
WDS 12154+5702 : VIRTUAL EYEPIECE
 
 

12154+5702 BLL 29A mag 3.3 Sp A2V 12154+5702 BLL 29B sep 181.9 P.A. 74.90 mag 10.21 12154+5702 BUP 140C sep 174.8 P.A. 129.70 mag 11.62 12154+5702 JNN 240D sep 3.3 P.A. 112.80 mag 18.4 12154+5702 JNN 240E sep 5.7 P.A. 169.20 mag 19.3 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 12154+5702 : ALADIN DSS IMAGE @ 12h 15m 25.45s +57° 01' 57.4"
 
 
 
 
WDS 12154+5702 JNN 240 AE : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

12154+5702 JNN 240AE (Megrez) distance=0' 12162+5710 KPP3252 distance=10' 12185+5725 STI2280 distance=34' 12193+5730 SMH 16 distance=43' 12189+5622 STF1630 distance=50' 12079+5719 CVR1408 distance=64' 12225+5731 KPP3868 distance=65' 12193+5558 CVR 651 distance=72' 12094+5758 TDS8247 distance=75' 12232+5621 MLB 67 distance=76' 12066+5637 RAO 271 distance=78' 12222+5805 WNC 4 distance=84' 12050+5651 HDS1701 distance=87' 12149+5830 CVR 125 distance=88' 12056+5659 A 1358AB distance=89' 12056+5659 A 1358AB,C distance=89' 12056+5659 YSC 211A,Bb distance=89' 12115+5827 SLW 691 distance=91' 12052+5624 TDS8216 distance=93' 12114+5837 LDS2634 distance=100' 12030+5726 UC 2258 distance=104' 12085+5535 LDS3040 distance=105' 12197+5523 HJ 2608 distance=106' 12147+5853 ES 1788 distance=112' 12081+5528 STF1603AB distance=113' 12296+5656 LDS2644 distance=116' 12077+5841 ES 1787 distance=116' 12144+5506 HJ 2604 distance=116' 12030+5806 DEA 77 distance=119' 12150+5501 HJ 2605 distance=122' 12095+5856 TVB 249 distance=124' 12081+5852 LDS2631 distance=125' 12000+5728 LDS2621 distance=128' 12289+5556 TDS8406 distance=131' 12014+5600 STI2278 distance=132' 12104+5455 ES 73BC distance=134' 12104+5455 ES 73AB distance=135' 12312+5747 UC 176 distance=136' 12319+5736 SLN 71 distance=138' 12227+5458 SLW 712 distance=139' 12272+5519 MLB1076 distance=143' 12113+5925 STI 743 distance=147' 12007+5544 LDS3035 distance=147' 12034+5507 TDS8196 distance=154' 12007+5841 HJ 2592 distance=154' 12339+5629 LDS1322 distance=155' 12123+5429 VYS 5 distance=155' 12301+5850 SLW 730 distance=160' 12065+5926 LDS2628 distance=160' 11595+5532 SHN 147 distance=161' 12119+5942 HDS1723 distance=163' 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 Megrez 12154+5702 BLL 29 AB 75 181.9 0
Show Megrez 12154+5702 BUP 140 AC 130 174.8 0
Show Megrez 12154+5702 JNN 240 AD 113 3.3 0
Show Megrez 12154+5702 JNN 240 AE 169 5.7 0
Show 12162+5710 KPP3252 156 5.4 10
Show 12185+5725 STI2280 175 21.0 34
Show 12193+5730 SMH 16 331 9.6 43
Show 12189+5622 STF1630 171 2.5 50
Show 12079+5719 CVR1408 267 3.9 64
Show 12225+5731 KPP3868 280 3.2 65
Show 12193+5558 CVR 651 204 16.3 72
Show 12094+5758 TDS8247 326 0.6 75
Show 12232+5621 MLB 67 136 8.5 76
Show 12066+5637 RAO 271 290 0.5 78
Show 12222+5805 WNC 4 76 53.2 84
Show 12050+5651 HDS1701 321 2.1 87
Show 12149+5830 CVR 125 156 13.2 88
Show 12056+5659 A 1358 AB 49 0.5 89
Show 12056+5659 A 1358 AB,C 173 34.8 89
Show 12056+5659 YSC 211 A,Bb 50 0.5 89
Show 12115+5827 SLW 691 65 15.5 91
Show 12052+5624 TDS8216 34 0.5 93
Show 12114+5837 LDS2634 220 10.7 100
Show 12030+5726 UC 2258 126 72.4 104
Show 12085+5535 LDS3040 96 216.6 105
Show 12197+5523 HJ 2608 267 10.0 106
Show 12147+5853 ES 1788 189 3.0 112
Show 12081+5528 STF1603 AB 85 22.3 113
Show 12296+5656 LDS2644 162 36.7 116
Show 12077+5841 ES 1787 141 5.7 116
Show 12144+5506 HJ 2604 337 19.7 116
Show 12030+5806 DEA 77 66 14.1 119
Show 12150+5501 HJ 2605 311 21.9 122
Show 12095+5856 TVB 249 78 2.6 124
Show 12081+5852 LDS2631 87 33.2 125
Show 12000+5728 LDS2621 0 8.0 128
Show 12289+5556 TDS8406 256 1.7 131
Show 12014+5600 STI2278 297 4.9 132
Show 12104+5455 ES 73 BC 307 3.1 134
Show 12104+5455 ES 73 AB 30 37.8 135
Show 12312+5747 UC 176 37 78.0 136
Show 12319+5736 SLN 71 120 3.2 138
Show 12227+5458 SLW 712 109 47.3 139
Show 12272+5519 MLB1076 225 11.1 143
Show 12113+5925 STI 743 217 10.4 147
Show 12007+5544 LDS3035 304 3.0 147
Show 12034+5507 TDS8196 346 1.3 154
Show 12007+5841 HJ 2592 11 4.3 154
Show 12339+5629 LDS1322 211 6.5 155
Show 12123+5429 VYS 5 10 14.7 155
Show 12301+5850 SLW 730 263 29.8 160

 
 
WDS 12154+5702 : COMPONENTS
 
 
  A B C D
B pa=74.9°
sep=181.91"
 
C pa=129.7°
sep=174.82"
pa=194.5°
sep=164.28"
 
D pa=112.8°
sep=3.34"
pa=254.2°
sep=179.28"
pa=310.0°
sep=171.62"
 
E pa=169.2°
sep=5.69"
pa=253.1°
sep=182.43"
pa=308.5°
sep=170.47"
pa=205.1°
sep=4.74"
 
 
12154+5702 A
 
 
Common name Megrez Meaning insertion point Other names KAFFA Coord arcsec 2000 121525.45+570157.4
Mag 3.3 Spectral class A2V (white) PmRA 104.00 PmDE 7.0
SAO 28315 HIP 59774 Tycho2 3837-01070-1 HD 106591
HR 4660 GC 16736 BD BD+57 1363 Bayer Delta Ursae Majoris
Bayer name del UMa Flamsteed 69 Ursae Majoris Flamsteed name 69 UMa FK5 456
Tycho2
Tycho2 3837-01070-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 3.410 E BTmag 0.014 VTmag 3.298
E VTmag 0.009 Prox 999 TYC T HIP 59774
CCDM RAdeg 183.85605417 DEdeg 57.03259861 EpRA 1990 1.55
EpDE 1990 1.53 E RAdeg 3.2 E DEdeg 3.2 Posflg
Corr -0.2
SAO
SAO 28315 DelFlag RA1950 PmRA1950 0.0126
DE1950 PmDE1950 0.004 Vmag 3.4 SpType A2
Double code Source 74 CatNum 456 DM BD+57 1363
DMcomp BDsup HD 106591 M HD 0
GC 16736 RA1950rad 3.19814016 DE1950rad 1.0002528 PmRA2000 0.0128
PmDE2000 0.009
Hipparcos
Catalog H HIP 59774 Proxy RAhms 12 15 25.45
DEdms +57 01 57.4 Vmag 3.32 VarFlag R Vmag H
RAdeg 183.856 DEdeg 57.0326 AstroRef Plx 40.05
CCDM 103.56 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD BD BD+57 1363
CD CP Dm number +57 1363 VIred 0.03
SpType A3Vvar R SpType Coord arcsec 2000 121525.45+570157.4
Hipparcos 2
HIP 59774 Sn 5 So 0 Nc 1
RArad 3.2088932061 DErad 0.9954066109 Plx 40.51 PmRA 104.11
PmDE 7.3 E RArad 0.1 E DErad 0.11 E Plx 0.15
E pmRA 0.14 E pmDE 0.13 Hpmag E Hpmag 0.0004
SHp 0.004 VA 0 BV 0.077 E BV 0.005
VI 0.03
 
 
12154+5702 B
 
 
Coord arcsec 2000 121546.97+570244.8 Mag 10.21 PmRA 20.00 PmDE -18.0
Delta magnitude 6.91 Coordinate calculated yes
 
 
12154+5702 C
 
 
Coord arcsec 2000 121541.92+570005.8 Mag 11.62 PmRA -47.00 PmDE 4.0
Delta magnitude 8.32 Coordinate calculated yes
 
 
12154+5702 D
 
 
Coord arcsec 2000 121525.83+570156.1 Mag 18.4 Delta magnitude 15.1 Coordinate calculated yes
 
 
12154+5702 E
 
 
Coord arcsec 2000 121525.58+570151.8 Mag 19.3 Delta magnitude 16 Coordinate calculated yes