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Doubles in session


Current system
16446+7145
MLR 182 Aa,Ab


Nearby doubles
25' : 16428+7122
HDS2373

26' : 16473+7208
CRB 196

43' : 16529+7203
NSN 685

47' : 16545+7145
TDS 842

50' : 16343+7156
TVB 285

52' : 16339+7159
HDS2342

66' : 16311+7131
UC 3182

73' : 16363+7247
TDS9998

74' : 16391+7256
LDS1853

79' : 16588+7106
STF2126

80' : 16315+7237
HDS2334

80' : 16316+7056
TDS 819AB

81' : 16520+7034
TOK 309

85' : 16524+7030
LDS1857

91' : 16384+7020
STF2099

94' : 16255+7123
TOK 676

99' : 16349+7019
LDS1848

100' : 16407+7323
MLR 197AB

100' : 16310+7304
NSN 679

106' : 16573+7314
CRB 198

125' : 16366+6948
BU 953AB

125' : 16356+7343
LDS1850

126' : 16536+7344
UR 10

126' : 17010+7327
UC 3275AB

129' : 16420+7353
MLR 198

132' : 16256+7325
TDS9892



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.

16446+7145 MLR 182 Aa,Ab

 
 
16h 44m 36.02s +71° 45' 25.0" P.A. 94.00 sep 0.3 mag 9.15,10.21 Sp G5 dist. 62.38 pc (203.48 l.y.)
 
 
Coord 2000 16446+7145 Discov num MLR 182 Comp Aa,Ab Coord arcsec 2000 16 44 36.02 +71 45 25.0
Date first 1971 Date last 2012 Obs 24
Pa first 91 Pa last 94 P.A. Now (θ) 94°
Sep first 0.2 Sep last 0.303 Sep. Now (ρ) 0.303"
Mag pri 9.15 Mag sec 10.21 delta mag (ΔM) 1.06 Spectral class G5 (yellow)
Pri motion ra -109 Sec motion ra
Pri motion dec +118 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
16446+7145 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 8611 16 44 36 +71 45 25 MLR 182 Aa,Ab 2012 24 94 0.3 9.15 10.21 1.06 Y <===
Show 8611 16 44 36 +71 45 25 UC 3219 AB 2015 7 113 27.7 8.90 13.40 4.50
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 8611 HIP 81961 Tycho2 4423-01079-1
Gaia DR2 1653447101974540160 HD 152027 BD BD+72 751 Distance 62.38
Distance ly 203.48
 
 
ORBITAL ELEMENTS
 
 
Period (P)39.72y± 0.78 Periastron (T)1995.56y± 0.33 Semi-major axis (a)0.233a± 0.004
Eccentricity (e)0.399± 0.017 Inclination (i)124.7°± 1.5 Longitude of periastron (ω)45.2°± 2.5
Node (Ω)293.4°± 1.3 Notesn ReferenceTok2020i
Equinox Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 149.5 0.142
2001 139.0 0.172
2002 131.5 0.199
2003 125.7 0.223
2004 121.0 0.243
2005 117.0 0.260
2006 113.3 0.273
2007 110.0 0.282
2008 106.9 0.289
2009 103.8 0.293
2010 100.9 0.294
2011 97.9 0.293
2012 94.9 0.290
2013 91.8 0.285
2014 88.5 0.278
2015 85.1 0.269
2016 81.4 0.259
2017 77.4 0.247
2018 73.0 0.235
2019 68.1 0.222
2020 62.5 0.209
2021 56.2 0.195
2022 49.0 0.183
2023 40.8 0.171
2024 31.5 0.162
2025 21.2 0.154
2026 10.0 0.150
2027 358.5 0.149
2028 347.0 0.151
2029 336.0 0.154
2030 325.5 0.159


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


 
  


wds16446%2B7145b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 16446+7145 MLR 182 Aa,Ab : NOTES
 
 
discov_num notes refcode
MLR 182 Aa,Ab SB1, P=403.9d Tok2014d
UC 3219 AB: Candidate on Tokovinin list, now reconfirmed as CPM. Tok2013c
 
 
REFERENCES
 
 
refcode metd author reference
Tok2013c - Tokovinin, A. .
Tok2013c private communication, 2013
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
Tok2020i orb+j Tokovinin, A. & Latham, D.W. 2020AJ....160..251T
Tok2020i +St AJ 160, 251, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 MLR Muller, P.
147 UC USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4)
147 UC Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G.,
147 UC & Zacharias, M.I. (UCAC4 Catalog)
158 UC Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C.,
158 UC DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
158 UC Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16446+7145 MLR 182 Aa,Ab 2008 21 284 0.3 9.15 10.21 G5 O 164436.02+714525.0
16446+7145 MLR 182 Aa,Ab 2012 24 94 0.3 9.15 10.21 G5 NO 164436.02+714525.0

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

 
 
WDS 16446+7145 MLR 182 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 16446+7145 MLR 182 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 16446+7145 : VIRTUAL EYEPIECE
 
 

16446+7145 UC 3219A mag 8.9 Sp G5 16446+7145 MLR 182Ab sep 0.1 P.A. 102.60 mag 10.21 16446+7145 UC 3219B sep 13.5 P.A. 143.90 mag 13.4 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 16446+7145 : ALADIN DSS IMAGE @ 16h 44m 36.02s +71° 45' 25.0"
 
 
 
 
WDS 16446+7145 MLR 182 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

16446+7145 MLR 182Aa,Ab distance=0' 16428+7122 HDS2373 distance=25' 16473+7208 CRB 196 distance=26' 16529+7203 NSN 685 distance=43' 16545+7145 TDS 842 distance=47' 16343+7156 TVB 285 distance=50' 16339+7159 HDS2342 distance=52' 16311+7131 UC 3182 distance=66' 16363+7247 TDS9998 distance=73' 16391+7256 LDS1853 distance=74' 16588+7106 STF2126 distance=79' 16315+7237 HDS2334 distance=80' 16316+7056 TDS 819AB distance=80' 16316+7056 CBL 159AC distance=80' 16520+7034 TOK 309 distance=81' 16524+7030 LDS1857 distance=85' 16384+7020 STF2099 distance=91' 16255+7123 TOK 676 distance=94' 16349+7019 LDS1848 distance=99' 16407+7323 MLR 197AB distance=100' 16407+7323 MLR 197AC distance=100' 16310+7304 NSN 679 distance=100' 16573+7314 CRB 198 distance=106' 16366+6948 BAZ 7Da,Db distance=123' 16366+6948 BU 953AB distance=125' 16366+6948 BU 953AB,C distance=125' 16366+6948 BU 953AB,D distance=125' 16366+6948 ABH 86AB,E distance=125' 16356+7343 LDS1850 distance=125' 16536+7344 UR 10 distance=126' 17010+7327 UC 3275AB distance=126' 17010+7327 UC 3275AC distance=126' 16420+7353 MLR 198 distance=129' 16256+7325 TDS9892 distance=132' 16542+6944 LDS1858 distance=132' 16322+6940 MLR 180 distance=140' 16592+7349 TDT 166 distance=140' 16584+6935 WRH 25AB distance=148' 16584+6935 WRH 25AC distance=148' 16491+7412 TDT 101 distance=149' 16376+6919 CBL 160 distance=151' 17036+6948 A 1146 distance=151' 17013+6937 HEI 245 distance=154' 17013+6935 HEI 244 distance=155' 17011+6929 SKF2731AB distance=159' 16380+6910 HDS2353 distance=160' 16343+7419 LDS1849 distance=160' 16563+7417 A 1144 distance=160' 16479+6906 LDS1855 distance=162' 16461+6903 TDT 76 distance=163' 16269+7411 LDS1846 distance=166' 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 16446+7145 MLR 182 Aa,Ab 94 0.3
Show 16446+7145 UC 3219 AB 113 27.7
Show 16428+7122 HDS2373 181 0.2 25
Show 16473+7208 CRB 196 189 50.2 26
Show 16529+7203 NSN 685 138 10.1 43
Show 16545+7145 TDS 842 25 1.6 47
Show 16343+7156 TVB 285 300 24.5 50
Show 16339+7159 HDS2342 265 0.3 52
Show 16311+7131 UC 3182 183 9.9 66
Show 16363+7247 TDS9998 336 0.5 73
Show 16391+7256 LDS1853 316 7.2 74
Show 16588+7106 STF2126 133 23.0 79
Show 16315+7237 HDS2334 175 1.1 80
Show 16316+7056 TDS 819 AB 110 1.1 80
Show 16316+7056 CBL 159 AC 132 40.0 80
Show 16520+7034 TOK 309 111 455.0 81
Show 16524+7030 LDS1857 1 33.3 85
Show 16384+7020 STF2099 215 9.8 91
Show 16255+7123 TOK 676 122 7.1 94
Show 16349+7019 LDS1848 207 1.7 99
Show 16407+7323 MLR 197 AB 74 0.5 100
Show 16407+7323 MLR 197 AC 247 1.9 100
Show 16310+7304 NSN 679 338 2.0 100
Show 16573+7314 CRB 198 358 11.8 106
Show 16366+6948 BAZ 7 Da,Db 283 0.4 123
Show 16366+6948 BU 953 AB 90 0.5 125
Show 16366+6948 BU 953 AB,C 148 75.2 125
Show 16366+6948 BU 953 AB,D 45 146.7 125
Show 16366+6948 ABH 86 AB,E 340 77.5 125
Show 16356+7343 LDS1850 101 234.1 125
Show 16536+7344 UR 10 9 46.3 126
Show 17010+7327 UC 3275 AB 57 44.7 126
Show 17010+7327 UC 3275 AC 76 1.3 126
Show 16420+7353 MLR 198 51 0.2 129
Show 16256+7325 TDS9892 198 0.6 132
Show 16542+6944 LDS1858 188 3.7 132
Show 16322+6940 MLR 180 247 0.6 140
Show 16592+7349 TDT 166 257 0.5 140
Show 16584+6935 WRH 25 AB 174 0.2 148
Show 16584+6935 WRH 25 AC 342 1.3 148
Show 16491+7412 TDT 101 141 0.7 149
Show 16376+6919 CBL 160 125 99.2 151
Show 17036+6948 A 1146 104 0.3 151
Show 17013+6937 HEI 245 297 1.4 154
Show 17013+6935 HEI 244 282 2.6 155
Show 17011+6929 SKF2731 AB 156 19.2 159
Show 16380+6910 HDS2353 202 0.3 160
Show 16343+7419 LDS1849 286 169.2 160
Show 16563+7417 A 1144 307 5.3 160
Show 16479+6906 LDS1855 6 6.6 162
Show 16461+6903 TDT 76 227 1.0 163

 
 
WDS 16446+7145 : COMPONENTS
 
 
  A Ab
Ab pa=102.6°
sep=0.10"
 
B pa=143.9°
sep=13.50"
pa=144.1°
sep=13.43"
 
 
16446+7145 A
 
 
Coord arcsec 2000 164436.02+714525.0 Mag 8.9 Spectral class G5 (yellow) PmRA -98.00
PmDE 113.0 SAO 8611 HIP 81961 Tycho2 4423-01079-1
HD 152027 GC 22602 BD BD+72 751
Tycho2
Tycho2 4423-01079-1 Pflag RAmdeg 251.15010074 DEmdeg 71.75693640
PmRA -97.9 PmDE 112.3 E RAmdeg 9 E DEmdeg 8
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.35 EpDEm 1990.76
Num 12 Q RAmdeg 1.0 Q DEmdeg 1.6 Q pmRA 1.0
Q pmDE 1.6 BTmag 9.579 E BTmag 0.021 VTmag 8.743
E VTmag 0.014 Prox 891 TYC T HIP 81961
CCDM AS RAdeg 251.15081833 DEdeg 71.75668000 EpRA 1990 1.75
EpDE 1990 1.77 E RAdeg 8.6 E DEdeg 8.2 Posflg P
Corr -0.1
SAO
SAO 8611 DelFlag RA1950 PmRA1950 -0.0172
DE1950 PmDE1950 0.147 Vmag 8.4 SpType G5
Double code Source 70 CatNum 22602 DM BD+72 751
DMcomp BDsup HD 152027 M HD 0
GC 22602 RA1950rad 4.38629793 DE1950rad 1.25393614 PmRA2000 -0.0161
PmDE2000 0.147
Hipparcos
Catalog H HIP 81961 Proxy H RAhms 16 44 36.21
DEdms +71 45 24.0 Vmag 8.66 VarFlag R Vmag H
RAdeg 251.151 DEdeg 71.7567 AstroRef * Plx 16.42
CCDM 16446+7145 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AS
Theta 326 Rho 0.152 HD 152027 BD BD+72 751
CD CP Dm number +72 751 VIred 0.78
SpType G5 R SpType Coord arcsec 2000 164436.21+714524.0
Hipparcos 2
HIP 81961 Sn 55 So 3 Nc 2
RArad 4.3834093921 DErad 1.2523899929 Plx 16.03 PmRA -96.11
PmDE 113.82 E RArad 0.75 E DErad 0.87 E Plx 0.84
E pmRA 0.81 E pmDE 0.95 Hpmag 8.8006 E Hpmag 0.0016
SHp 0.016 VA 0 BV 0.727 E BV 0.016
VI 0.78
CCDM
Ccdm 16446+7145 RComp Comp A Note1
Note2 Discov num DRAs -0.03 DDEs 24.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.9 Sp G5 PmNote *
PmRA -106 PmDE 101 Dm number +72 751 Cat1 BD
Name2 +71 492 Cat2 AGK2/3 HD 152027 M HD
ADS BDS M ADS BDS N IDS IDS 16459N7156A
HIC 81961
 
 
16446+7145 Ab
 
 
Coord arcsec 2000 164436.04+714525.0 Mag 10.21 Calc delta mag 1.06 Calc coord yes
 
 
16446+7145 B
 
 
Coord arcsec 2000 164437.72+714514.1 Mag 13.4 PmRA -95.00 PmDE 105.0
Calc delta mag 4.25 Calc coord yes
CCDM
Ccdm 16446+7145 RComp Comp B Note1
Note2 Discov num MLR 182 DRAs DDEs
R dRAs Year 1971 Theta 91 Rho 0.2
Obs 1 Vmag 9.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 16459N7156B
HIC 81961