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Doubles in session


Current system
18253+4846
HU 66 AB


Nearby doubles
21' : 18273+4852
TDT 880

29' : 18268+4822
COU2277

33' : 18263+4917
TDT 868

33' : 18272+4913
RAO 392

40' : 18221+4821
HU 582

43' : 18296+4851
ES 2667AB

45' : 18276+4926
COU2278

53' : 18294+4813
TDT 905

54' : 18283+4930
TDT 896

57' : 18291+4928
UC 3589

66' : 18308+4810
KPP 415

80' : 18192+4754
UC 3553

84' : 18334+4823
TDS 928

84' : 18169+4856
LDS5174AB

86' : 18322+4755
KPP2097

94' : 18277+5016
LEP 158

98' : 18179+4743
TDT 780

102' : 18193+4724
ES 1158

108' : 18146+4827
SHN 228

113' : 18253+4653
BU 134

118' : 18264+4649
STT 352

120' : 18161+4729
COU2120

125' : 18197+4654
TDS 916

129' : 18145+4737
COU2119

132' : 18133+4944
HDS2572

133' : 18386+4901
CBL 171



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.

18253+4846 HU 66 AB

 
 
18h 25m 18.20s +48° 45' 42.5" P.A. 197.00 sep 0.2 mag 7.90,8.40 Sp G5 dist. 144.72 pc (472.08 l.y.)
 
 
Coord 2000 18253+4846 Discov num HU   66 Comp AB Coord arcsec 2000 18 25 18.20 +48 45 42.5
Date first 1883 Date last 2016 Obs 65
Pa first 24 Pa last 197.3 P.A. Now (θ) 197.3°
Sep first 0.5 Sep last 0.203 Sep. Now (ρ) 0.203"
Mag pri 7.90 Mag sec 8.40 delta mag (ΔM) 0.5 Spectral class G5 (yellow)
Pri motion ra +024 Sec motion ra
Pri motion dec +003 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18253+4846 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 47482 18 25 18 +48 45 42 HU 66 AB 2016 65 197 0.2 7.90 8.40 0.50 Y <===
Show HD 170109 47482 18 25 18 +48 45 42 STT 351 AC 2021 102 26 1.0 7.90 8.25 0.35 Y
Show 18 25 18 +48 45 42 HU 66 BC 2019 20 26 0.8 8.40 8.25 0.15 Y
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 47482 HIP 90284 Tycho2 3534-00302-1
Gaia DR2 2123486226905640960 HD 170109 GC 25163 ADS 11344
BD BD+48 2692 Distance 144.72 Distance ly 472.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)2022y Semi-major axis (a)0.392a
Eccentricity (e)0.546 Inclination (i)123.2° Longitude of periastron (ω)269.6°
Node (Ω)59.7° Notesn ReferenceUSN2002
Equinox2000 Last observation1995 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 235.6 0.255
2001 234.3 0.248
2002 232.9 0.242
2003 231.4 0.235
2004 229.8 0.227
2005 228.1 0.220
2006 226.3 0.212
2007 224.3 0.204
2008 222.2 0.196
2009 219.9 0.188
2010 217.4 0.179
2011 214.6 0.170
2012 211.5 0.161
2013 208.1 0.152
2014 204.2 0.143
2015 199.8 0.135
2016 194.8 0.126
2017 189.2 0.119
2018 182.8 0.112
2019 175.7 0.106
2020 167.8 0.101
2021 159.3 0.099
2022 150.4 0.097
2023 141.6 0.098
2024 133.0 0.101
2025 125.0 0.105
2026 117.8 0.111
2027 111.3 0.118
2028 105.5 0.125
2029 100.5 0.134
2030 96.0 0.142


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


 
  


wds18253%2B4846a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18253+4846 HU 66 AB : NOTES
 
 
discov_num notes refcode
HU 66 Van Biesbroeck (1954) was unable to resolve this system in 1943,
1944 or 1945 on the 82-inch telescope at the McDonald Observatory.
However, since he resolved the system successfully in 1946 with the
same telescope, and in 1940 with a smaller (40-inch) telescope, the
non-resolution is probably due to bad seeing or ID error. USN2002
STT 351 AC: Additional notes may be found in Muller (1955). Mlr1955c
 
 
REFERENCES
 
 
refcode metd author reference
Mlr1955c Mc - Muller, P. 1955JO.....38..221M
Mlr1955c J. Obs. 38, 221, 1955
USN2002 orb - Seymour, D., Mason, B.D., Hartkopf, W.I., & Wycoff, G.L. 2002AJ....123.1023S
USN2002 AJ 123, 1023, 2002
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
58 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18253+4846 HU 66 AB 2000 56 238 0.2 8.44 8.94 G5 NO 182518.20+484542.5
18253+4846 HU 66 AB 2007 57 223 0.2 8.44 8.94 G5 NO 182518.20+484542.5
18253+4846 HU 66 AB 2009 59 221 0.2 7.90 8.40 G5 NO 182518.20+484542.5
18253+4846 HU 66 AB 2011 60 216 0.2 7.90 8.40 G5 NO 182518.20+484542.5
18253+4846 HU 66 AB 2016 62 197 0.2 7.90 8.40 G5 NO 182518.20+484542.5
18253+4846 HU 66 AB 2017 61 207 0.8 7.90 8.40 G5 NO 182518.20+484542.5

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

 
 
WDS 18253+4846 HU 66 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18253+4846 HU 66 AB : MEASURES
 
 
No records found.

 
 
WDS 18253+4846 : VIRTUAL EYEPIECE
 
 

18253+4846 HU 66A mag 7.9 Sp G5 18253+4846 HU 66B mag 8.4 Sp G5 18253+4846 STT 351C sep 0.9 P.A. 17.60 mag 8.25 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 18253+4846 : ALADIN DSS IMAGE @ 18h 25m 18.20s +48° 45' 42.5"
 
 
 
 
WDS 18253+4846 HU 66 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18253+4846 HU 66AB distance=0' 18273+4852 TDT 880 distance=21' 18268+4822 COU2277 distance=29' 18263+4917 TDT 868 distance=33' 18272+4913 RAO 392 distance=33' 18221+4821 HU 582 distance=40' 18296+4851 ES 2667AB distance=43' 18296+4851 CRB 4BC distance=43' 18276+4926 COU2278 distance=45' 18294+4813 TDT 905 distance=53' 18283+4930 TDT 896 distance=54' 18291+4928 UC 3589 distance=57' 18308+4810 KPP 415 distance=66' 18192+4754 UC 3553 distance=80' 18334+4823 TDS 928 distance=84' 18169+4856 LDS5174AB distance=84' 18322+4755 KPP2097 distance=86' 18277+5016 LEP 158 distance=94' 18179+4743 TDT 780 distance=98' 18193+4724 ES 1158 distance=102' 18146+4827 SHN 228 distance=108' 18253+4653 BU 134 distance=113' 18264+4649 STT 352 distance=118' 18161+4729 COU2120 distance=120' 18164+5014 JNN 117DE distance=124' 18164+5014 UC 3540CD distance=124' 18197+4654 TDS 916 distance=125' 18145+4737 COU2119 distance=129' 18133+4944 HDS2572 distance=132' 18386+4901 CBL 171 distance=133' 18182+5050 ES 647 distance=143' 18328+4644 BRT1918 distance=144' 18147+5027 TDT 760 distance=145' 18117+4758 COU2116 distance=145' 18340+5045 ES 786 distance=146' 18118+4955 COU2393 distance=149' 18405+4906 COU2394 distance=152' 18119+4733 COU2117 distance=154' 18099+4824 STF2293AB distance=155' 18410+4848 COU2395 distance=155' 18340+5058 ES 785AB distance=157' 18340+5058 ES 785AC distance=157' 18340+5058 ABH 102AD distance=157' 18095+4829 TDT 713 distance=158' 18172+5103 AG 220 distance=158' 18109+4958 KPP3328 distance=158' 18319+5110 ES 784 distance=159' 18220+5122 UC 3560 distance=160' 18387+4716 KPP2651 distance=162' 18116+5027 ES 782 distance=167' 18386+4700 ES 1159AB distance=169' 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 18253+4846 HU 66 AB 197 0.2
Show 18253+4846 STT 351 AC 26 1.0
Show 18253+4846 HU 66 BC 26 0.8
Show 18273+4852 TDT 880 217 1.6 21
Show 18268+4822 COU2277 320 0.2 29
Show 18263+4917 TDT 868 109 0.5 33
Show 18272+4913 RAO 392 129 0.9 33
Show 18221+4821 HU 582 191 2.3 40
Show 18296+4851 ES 2667 AB 67 13.7 43
Show 18296+4851 CRB 4 BC 291 3.2 43
Show 18276+4926 COU2278 15 1.4 45
Show 18294+4813 TDT 905 110 2.0 53
Show 18283+4930 TDT 896 152 8.8 54
Show 18291+4928 UC 3589 32 17.0 57
Show 18308+4810 KPP 415 9 3.7 66
Show 18192+4754 UC 3553 99 15.8 80
Show 18334+4823 TDS 928 317 1.9 84
Show 18169+4856 LDS5174 AB 155 109.7 84
Show 18322+4755 KPP2097 171 16.9 86
Show 18277+5016 LEP 158 238 5.1 94
Show 18179+4743 TDT 780 165 0.5 98
Show 18193+4724 ES 1158 197 4.9 102
Show 18146+4827 SHN 228 -1 0.1 108
Show 18253+4653 BU 134 125 1.1 113
Show 18264+4649 STT 352 221 24.2 118
Show 18161+4729 COU2120 107 3.2 120
Show 18164+5014 JNN 117 DE 333 0.7 124
Show 18164+5014 UC 3540 CD 177 19.5 124
Show 18197+4654 TDS 916 201 0.9 125
Show 18145+4737 COU2119 275 1.3 129
Show 18133+4944 HDS2572 69 14.6 132
Show 18386+4901 CBL 171 260 47.5 133
Show 18182+5050 ES 647 291 2.4 143
Show 18328+4644 BRT1918 190 4.2 144
Show 18147+5027 TDT 760 139 0.5 145
Show 18117+4758 COU2116 302 1.4 145
Show 18340+5045 ES 786 323 5.9 146
Show 18118+4955 COU2393 78 1.9 149
Show 18405+4906 COU2394 219 0.6 152
Show 18119+4733 COU2117 119 0.4 154
Show 18099+4824 STF2293 AB 83 12.8 155
Show 18410+4848 COU2395 137 0.6 155
Show 18340+5058 ES 785 AB 98 9.4 157
Show 18340+5058 ES 785 AC 293 10.9 157
Show 18340+5058 ABH 102 AD 17 54.2 157
Show 18095+4829 TDT 713 332 0.5 158
Show 18172+5103 AG 220 126 10.9 158
Show 18109+4958 KPP3328 63 4.1 158
Show 18319+5110 ES 784 65 7.1 159
Show 18220+5122 UC 3560 292 66.1 160
Show 18387+4716 KPP2651 302 24.7 162

 
 
WDS 18253+4846 : COMPONENTS
 
 
  A B
B pa=0.0°
sep=0.00"
 
C pa=17.6°
sep=0.91"
pa=17.6°
sep=0.91"
 
 
18253+4846 A
 
 
Coord arcsec 2000 182518.20+484542.5 Mag 7.9 Spectral class G5 (yellow) PmRA 24.00
PmDE 3.0 SAO 47482 HIP 90284 Tycho2 3534-00302-1
HD 170109 GC 25163 BD BD+48 2692
Tycho2
Tycho2 3534-00302-1 Pflag RAmdeg 276.32581940 DEmdeg 48.76168452
PmRA 19.1 PmDE 4.0 E RAmdeg 5 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.21 EpDEm 1991.27
Num 9 Q RAmdeg 1.0 Q DEmdeg 0.8 Q pmRA 0.9
Q pmDE 0.7 BTmag 8.420 E BTmag 0.016 VTmag 7.450
E VTmag 0.011 Prox 999 TYC T HIP 90284
CCDM AB RAdeg 276.32575139 DEdeg 48.76167500 EpRA 1990 1.52
EpDE 1990 1.56 E RAdeg 5.1 E DEdeg 4.9 Posflg P
Corr -0.2
SAO
SAO 47482 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 0.006 Vmag 7.2 SpType G5
Double code Source 70 CatNum 25163 DM BD+48 2692
DMcomp BDsup HD 170109 M HD 0
GC 25163 RA1950rad 4.81710718 DE1950rad 0.85052969 PmRA2000 0.0009
PmDE2000 0.006
Hipparcos
Catalog H HIP 90284 Proxy H RAhms 18 25 18.20
DEdms +48 45 42.5 Vmag 7.21 VarFlag R Vmag H
RAdeg 276.326 DEdeg 48.7618 AstroRef C Plx 5.39
CCDM 18253+4846 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual A M HIP
Theta Rho HD 170109 BD BD+48 2692
CD CP Dm number +48 2692 VIred 0.85
SpType G5 R SpType Coord arcsec 2000 182518.20+484542.5
Hipparcos 2
HIP 90284 Sn 15 So 3 Nc 3
RArad 4.8227958088 DErad 0.8510541182 Plx 6.91 PmRA 20.15
PmDE 2.26 E RArad 1.04 E DErad 1.14 E Plx 0.96
E pmRA 1.41 E pmDE 1.55 Hpmag 7.3593 E Hpmag 0.0009
SHp 0.008 VA 0 BV 0.799 E BV 0.041
VI 0.85
CCDM
Ccdm 18253+4846 RComp Comp A Note1
Note2 Discov num DRAs 0.22 DDEs -18.4
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.9 Sp G5 PmNote *
PmRA 18 PmDE -1 Dm number +48 2692 Cat1 BD
Name2 +48 1411 Cat2 AGK2/3 HD 170109 M HD
ADS BDS A11344 M ADS BDS N IDS IDS 18227N4842A
HIC 90284
 
 
18253+4846 B
 
 
Coord arcsec 2000 182518.20+484542.5 Coord calc 182518.20+484542.5 Mag 8.4 Spectral class G5 (yellow)
PmRA 19.00 PmDE 3.0 Calc delta mag 0.5
CCDM
Ccdm 18253+4846 RComp Comp B Note1
Note2 Discov num HU 66 DRAs DDEs
R dRAs Year 1960 Theta 271 Rho 0.4
Obs 30 Vmag 8.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11344 M ADS BDS N N IDS IDS 18227N4842B
HIC 90284
 
 
18253+4846 C
 
 
Coord arcsec 2000 182518.23+484543.4 Mag 8.25 PmRA 19.00 PmDE 4.0
Calc delta mag 0.35 Calc coord yes
CCDM
Ccdm 18253+4846 RComp Comp C Note1
Note2 Discov num STT 351 DRAs DDEs
R dRAs Year 1960 Theta 018 Rho 0.7
Obs 26 Vmag 8.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11344 M ADS BDS N IDS IDS 18227N4842C
HIC 90284