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Current system
20154+6412
MLR 60 AB


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STF2642AB

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BU 470

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STF2640AB

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UC 4066

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TDT2071



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20154+6412 MLR 60 AB

 
 
20h 15m 21.50s +64° 11' 55.6" P.A. 173.00 sep 0.2 mag 8.46,8.50 Sp G5 dist. 68.97 pc (224.98 l.y.)
 
 
Coord 2000 20154+6412 Discov num MLR  60 Comp AB Coord arcsec 2000 20 15 21.50 +64 11 55.6
Date first 1970 Date last 2008 Obs 24
Pa first 20 Pa last 173.2 P.A. Now (θ) 11.4°
Sep first 0.2 Sep last 0.249 Sep. Now (ρ) 0.18"
Mag pri 8.46 Mag sec 8.50 delta mag (ΔM) 0.04 Spectral class G5 (yellow)
Pri motion ra +178 Sec motion ra
Pri motion dec +232 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
20154+6412 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18780 20 15 22 +64 11 56 MLR 60 AB 2008 24 173 0.2 8.46 8.50 0.04 Y <===
Show 20 15 22 +64 11 56 LDS 5245 AC 1960 1 122 20.0 8.46 17.03 8.57
Show 20 15 22 +64 11 56 SHY 772 AD 2016 4 247 999.9 8.46 10.12 1.66
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 18780 HIP 99832 Tycho2 4240-00516-1
Gaia DR2 2244572934213430272 HD 193215 BD BD+63 1608 Distance 68.97
Distance ly 224.98
 
 
ORBITAL ELEMENTS
 
 
Period (P)50y Periastron (T)1963.9y Semi-major axis (a)0.239a
Eccentricity (e)0.035 Inclination (i)107.5° Longitude of periastron (ω)68.2°
Node (Ω)176° Notesn ReferenceDoc2012j
Equinox2000 Last observation2008 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 188.2 0.200
2001 185.3 0.213
2002 182.8 0.224
2003 180.4 0.231
2004 178.1 0.235
2005 175.9 0.236
2006 173.6 0.233
2007 171.3 0.226
2008 168.8 0.216
2009 165.9 0.203
2010 162.7 0.187
2011 158.8 0.169
2012 153.9 0.148
2013 147.3 0.127
2014 138.0 0.105
2015 124.2 0.086
2016 104.0 0.073
2017 79.0 0.070
2018 56.2 0.079
2019 39.8 0.096
2020 28.8 0.117
2021 21.2 0.139
2022 15.7 0.160
2023 11.4 0.180
2024 8.0 0.198
2025 5.0 0.213
2026 2.5 0.225
2027 0.1 0.234
2028 357.9 0.240
2029 355.8 0.242
2030 353.7 0.241


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


 
  


wds20154%2B6412b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20154+6412 MLR 60 AB : NOTES
 
 
discov_num notes refcode
SHY 772 AD: HIP 99832 + HIP 98613.
MLR 60 AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 1.60 +/- 0.87, 2.37, and 0.95 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Doc2012j orb - Docobo, J.A. & Andrade, M. 2012IAUDS.178Q...1D
Doc2012j Inf. Circ. 178, 1, 2012
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 LDS Luyten p.m. catalog (from additional DD list)
1 MLR Muller, P.
147 SHY Shaya, E.J. & Olling, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20154+6412 MLR 60 AB 1997 21 349 0.2 8.46 8.50 G5 O 201521.50+641153.5
20154+6412 MLR 60 AB 2007 22 349 0.2 8.46 8.50 G5 O 201521.50+641153.5
20154+6412 MLR 60 AB 2008 24 173 0.2 8.46 8.50 G5 NOD 201521.50+641153.5

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

 
 
WDS 20154+6412 MLR 60 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20154+6412 MLR 60 AB : MEASURES
 
 
No records found.

 
 
WDS 20154+6412 : VIRTUAL EYEPIECE
 
 

20154+6412 MLR 60A mag 8.46 Sp G5 20154+6412 MLR 60B sep 0.2 P.A. 177.00 mag 8.5 20154+6412 LDS5245C sep 12.9 P.A. 145.10 mag 17.03 20154+6412 SHY 772D sep 3276.0 P.A. 225.70 mag 10.12 Sp K2 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 20154+6412 : ALADIN DSS IMAGE @ 20h 15m 21.50s +64° 11' 55.6"
 
 
 
 
WDS 20154+6412 MLR 60 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20154+6412 MLR 60AB distance=0' 20171+6410 STI 961 distance=13' 20142+6429 STI 958 distance=20' 20137+6353 LDS2449 distance=22' 20119+6431 STF2660 distance=30' 20178+6343 STI 962 distance=34' 20102+6419 STI 950 distance=35' 20212+6359 BU 1134 distance=41' 20198+6333 LDS2451 distance=41' 20229+6411 STF2685 distance=50' 20213+6341 STI 971 distance=50' 20085+6346 STI 947 distance=53' 20185+6313 HJ 2958 distance=63' 20086+6328 STI 948 distance=64' 20056+6342 STF2642AB distance=71' 20056+6342 STF2642AC distance=71' 20052+6346 BU 470 distance=72' 20047+6353 STF2640AB distance=73' 20047+6353 STF2640AC distance=73' 20042+6434 BU 1479 distance=76' 20035+6412 TDT1939 distance=78' 20074+6511 HJL1102 distance=79' 20183+6526 MLB 219 distance=79' 20258+6325 STI 979 distance=84' 20185+6533 KPP 467 distance=84' 20023+6438 STTA200AB distance=89' 20023+6438 STTA200AC distance=89' 20034+6330 STF2632 distance=90' 20012+6409 UC 4066 distance=93' 20117+6542 TDT2071 distance=94' 20298+6400 MLR 52 distance=96' 20129+6236 STI 954 distance=97' 20015+6449 H 6 38AB distance=98' 20276+6513 UC 4188 distance=100' 20202+6236 HU 958 distance=102' 20198+6235 LDS1470 distance=102' 20061+6538 TDT1975 distance=104' 20023+6515 STI 941 distance=105' 20010+6323 STI 940 distance=107' 20194+6600 TDT2167 distance=111' 19582+6430 UC 4059 distance=113' 20081+6227 STI 946 distance=116' 20254+6237 TDT2259 distance=117' 20080+6225 BVD 335 distance=118' 20097+6220 ES 1853 distance=119' 20227+6224 STI 973 distance=119' 20332+6442 MLB 220 distance=120' 20196+6215 GUL 2 distance=120' 20207+6609 SKF2610 distance=122' 20240+6222 ES 1854 distance=124' 19579+6326 HU 955 distance=124' 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 20154+6412 MLR 60 AB 173 0.2
Show 20154+6412 LDS5245 AC 122 20.0
Show 20154+6412 SHY 772 AD 247 999.9
Show 20171+6410 STI 961 179 6.7 13
Show 20142+6429 STI 958 6 7.3 20
Show 20137+6353 LDS2449 165 24.9 22
Show 20119+6431 STF2660 166 22.3 30
Show 20178+6343 STI 962 182 14.9 34
Show 20102+6419 STI 950 200 6.5 35
Show 20212+6359 BU 1134 81 4.3 41
Show 20198+6333 LDS2451 85 25.4 41
Show 20229+6411 STF2685 347 4.2 50
Show 20213+6341 STI 971 141 7.1 50
Show 20085+6346 STI 947 320 11.1 53
Show 20185+6313 HJ 2958 316 9.5 63
Show 20086+6328 STI 948 321 17.9 64
Show 20056+6342 STF2642 AB 191 1.8 71
Show 20056+6342 STF2642 AC 34 68.6 71
Show 20052+6346 BU 470 210 2.6 72
Show 20047+6353 STF2640 AB 14 5.7 73
Show 20047+6353 STF2640 AC 81 153.0 73
Show 20042+6434 BU 1479 46 43.0 76
Show 20035+6412 TDT1939 330 0.8 78
Show 20074+6511 HJL1102 123 126.7 79
Show 20183+6526 MLB 219 333 2.9 79
Show 20258+6325 STI 979 52 6.7 84
Show 20185+6533 KPP 467 243 4.7 84
Show 20023+6438 STTA200 AB 332 98.9 89
Show 20023+6438 STTA200 AC 190 27.0 89
Show 20034+6330 STF2632 299 26.2 90
Show 20012+6409 UC 4066 95 15.8 93
Show 20117+6542 TDT2071 65 0.8 94
Show 20298+6400 MLR 52 32 0.2 96
Show 20129+6236 STI 954 286 9.4 97
Show 20015+6449 H 6 38 AB 171 193.1 98
Show 20276+6513 UC 4188 18 30.7 100
Show 20202+6236 HU 958 354 0.9 102
Show 20198+6235 LDS1470 128 12.7 102
Show 20061+6538 TDT1975 274 0.8 104
Show 20023+6515 STI 941 96 11.7 105
Show 20010+6323 STI 940 69 14.1 107
Show 20194+6600 TDT2167 125 0.4 111
Show 19582+6430 UC 4059 43 8.6 113
Show 20081+6227 STI 946 302 5.3 116
Show 20254+6237 TDT2259 158 2.1 117
Show 20080+6225 BVD 335 39 9.7 118
Show 20097+6220 ES 1853 293 4.3 119
Show 20227+6224 STI 973 65 4.0 119
Show 20332+6442 MLB 220 84 7.2 120
Show 20196+6215 GUL 2 347 0.3 120
Show 20207+6609 SKF2610 187 13.0 122

 
 
WDS 20154+6412 : COMPONENTS
 
 
  A B C
B pa=177.0°
sep=0.25"
 
C pa=145.1°
sep=12.92"
pa=144.6°
sep=12.71"
 
D pa=225.7°
sep=3275.98"
pa=225.7°
sep=3275.82"
pa=225.9°
sep=3274.12"
 
 
20154+6412 A
 
 
Coord arcsec 2000 201521.50+641155.6 Mag 8.46 Spectral class G5 (yellow) PmRA 178.00
PmDE 232.0
CCDM
Ccdm 20154+6412 RComp Comp A Note1
Note2 Discov num DRAs -2.49 DDEs -4.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.7 Sp G5 PmNote *
PmRA 180 PmDE 229 Dm number +63 1608 Cat1 BD
Name2 +64 971 Cat2 AGK2/3 HD 193215 M HD
ADS BDS M ADS BDS N IDS IDS 20140N6353A
HIC 99832
 
 
20154+6412 B
 
 
Coord arcsec 2000 201521.50+641155.4 Mag 8.5 SAO 18780 HIP 99832
Tycho2 4240-00516-1 HD 193215 BD BD+63 1608 Calc delta mag 0.04
Calc coord yes
Tycho2
Tycho2 4240-00516-1 Pflag RAmdeg 303.83960060 DEmdeg 64.19876552
PmRA 180.3 PmDE 228.0 E RAmdeg 8 E DEmdeg 8
E pmRA 1.6 E pmDE 1.6 EpRAm 1991.14 EpDEm 1991.23
Num 8 Q RAmdeg 0.9 Q DEmdeg 0.6 Q pmRA 0.9
Q pmDE 0.6 BTmag 9.431 E BTmag 0.019 VTmag 8.544
E VTmag 0.013 Prox 999 TYC T HIP 99832
CCDM RAdeg 303.83864278 DEdeg 64.19824472 EpRA 1990 1.69
EpDE 1990 1.78 E RAdeg 7.9 E DEdeg 7.7 Posflg
Corr 0.0
SAO
SAO 18780 DelFlag RA1950 PmRA1950 0.0252
DE1950 PmDE1950 0.225 Vmag 8 SpType G5
Double code Source 2 CatNum 971 DM BD+63 1608
DMcomp BDsup HD 193215 M HD 0
GC RA1950rad 5.3000384 DE1950rad 1.11772425 PmRA2000 0.0256
PmDE2000 0.223
Hipparcos
Catalog H HIP 99832 Proxy RAhms 20 15 21.26
DEdms +64 11 53.6 Vmag 8.44 VarFlag R Vmag H
RAdeg 303.839 DEdeg 64.1982 AstroRef Plx 14.79
CCDM 20154+6412 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 193215 BD BD+63 1608
CD CP Dm number +63 1608 VIred 0.85
SpType G5 R SpType Coord arcsec 2000 201521.26+641153.6
Hipparcos 2
HIP 99832 Sn 5 So 0 Nc 1
RArad 5.302983794 DErad 1.1204701836 Plx 14.5 PmRA 180.63
PmDE 230.46 E RArad 0.48 E DErad 0.47 E Plx 0.48
E pmRA 0.41 E pmDE 0.59 Hpmag 8.5946 E Hpmag 0.0013
SHp 0.01 VA 0 BV 0.807 E BV 0.017
VI 0.83
CCDM
Ccdm 20154+6412 RComp Comp B Note1
Note2 Discov num MLR 60 DRAs DDEs
R dRAs Year 1970 Theta 200 Rho 0.2
Obs 1 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20140N6353B
HIC 99832
 
 
20154+6412 C
 
 
Coord arcsec 2000 201522.63+641145.0 Mag 17.03 PmRA 180.00 PmDE 228.0
Calc delta mag 8.57 Calc coord yes
 
 
20154+6412 D
 
 
Coord arcsec 2000 200924.34+633401.5 Mag 10.12 Spectral class K2 (yellow-orange) PmRA 166.00
PmDE 239.0 Calc delta mag 1.66 Calc coord yes