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Doubles in session


Current system
18110-0000
RST 5106
HD 166520


Nearby doubles
20' : 18110-0020
NSN 151

25' : 18117-0023
TDT 732

34' : 18104+0033
STF2286

46' : 18082-0017
KPP2776

46' : 18140+0009
BAL1193

49' : 18087+0034
NSN 702

55' : 18146+0011
STF2294

59' : 18113+0058
CVR 212

61' : 18075+0029
CBL 166

66' : 18119-0104
RST5107

66' : 18080-0047
RST5102

77' : 18061-0022
A 1167

80' : 18163+0000
J 2512

86' : 18054-0019
A 1166

96' : 18056+0051
J 518

98' : 18065-0109
HDS2552

102' : 18166-0058
RST5109

114' : 18061+0127
BAL1497

116' : 18123+0154
A 2260AB

121' : 18117+0200
BAL1499

122' : 18079+0153
OSO 93AB

125' : 18032+0047
BAL1192

129' : 18121+0207
BAL1957

130' : 18103+0209
DAL 18AB

130' : 18036+0107
KPP 571

131' : 18185-0105
TDT 786



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.

18110-0000 RST 5106 (HD 166520)

 
 
18h 11m 00.14s -00° 00' 10.7" P.A. 4.00 sep 1.9 mag 9.29,11.70 Sp K0
 
 
Coord 2000 18110-0000 Discov num RST5106 Comp Coord arcsec 2000 18 11 00.14 -00 00 10.7
Date first 1943 Date last 2016 Obs 4
Pa first 0 Pa last 3.8 P.A. Now (θ) 3.8°
Sep first 1.6 Sep last 1.914 Sep. Now (ρ) 1.914"
Mag pri 9.29 Mag sec 11.70 delta mag (ΔM) 2.41 Spectral class K0 (yellow-orange)
Pri motion ra +028 Sec motion ra
Pri motion dec +009 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 166520 Constellation Serpens SAO 142138 Tycho2 5097-00199-1
Gaia DR2 4275229726557809024 HD 166520
 
 
WDS 18110-0000 RST 5106 (HD 166520) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Rst1933 T - Rossiter, R.A. 1933MmRAS..65...27R
Rst1933 MemRAS 65, 27, 1933
Rst1937 Ma - Rossiter, R.A. 1937MmRAS..65...51R
Rst1937 MemRAS 65, 51, 1937
Rst1943 Ma - Rossiter, R.A. 1943POMic...8..133R
Rst1943 Pub. Univ. Michigan Obs. 8, 133, 1943
Rst1944 - Rossiter, R.A. 1944POMic...9....1R
Rst1944 Pub. Univ. Michigan Obs. 9, 1, 1944
Rst1947 Ma - Rossiter, R.A. 1947POMic...9....7R
Rst1947 Pub. Univ. Michigan Obs. 9, 7, 1947
Rst1955 Ma j Rossiter, R.A. 1955POMic..11....1R
Rst1955 +P+ Pub. Univ. Michigan Obs. 11, 1, 1955
Rst1964 Ma - Rossiter, R.A. 1964POMic...9...73R
Rst1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18110-0000 RST5106 1943 1 0 1.6 9.29 11.70 K0 181100.14-000010.7
18110-0000 RST5106 2015 2 4 1.9 9.29 11.70 K0 181100.14-000010.7
18110-0000 RST5106 2016 3 4 1.9 9.29 11.70 K0 181100.14-000010.7

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

 
 
WDS 18110-0000 RST 5106 (HD 166520) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18110-0000 RST 5106 (HD 166520) : MEASURES
 
 
No records found.

 
 
WDS 18110-0000 (HD 166520) : VIRTUAL EYEPIECE
 
 

18110-0000 RST5106A mag 9.29 Sp K0 18110-0000 RST5106B sep 1.9 P.A. 3.80 mag 11.7 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18110-0000 (HD 166520) : ALADIN DSS IMAGE @ 18h 11m 00.14s -00° 00' 10.7"
 
 
 
 
WDS 18110-0000 RST 5106 (HD 166520) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18110-0000 RST5106 distance=0' 18110-0020 NSN 151 distance=20' 18117-0023 TDT 732 distance=25' 18104+0033 STF2286 distance=34' 18082-0017 KPP2776 distance=46' 18140+0009 BAL1193 distance=46' 18087+0034 NSN 702 distance=49' 18146+0011 STF2294 distance=55' 18113+0058 CVR 212 distance=59' 18075+0029 CBL 166 distance=61' 18119-0104 RST5107 distance=66' 18080-0047 RST5102 distance=66' 18061-0022 A 1167 distance=77' 18163+0000 J 2512 distance=80' 18054-0019 A 1166 distance=86' 18056+0051 J 518 distance=96' 18065-0109 HDS2552 distance=98' 18166-0058 RST5109 distance=102' 18061+0127 BAL1497 distance=114' 18123+0154 A 2260AB distance=116' 18123+0154 RAO 66AC distance=116' 18117+0200 BAL1499 distance=121' 18079+0153 OSO 93AB distance=122' 18079+0153 OSO 93AC distance=122' 18079+0153 OSO 93AD distance=122' 18079+0153 OSO 93AE distance=122' 18079+0153 OSO 93AF distance=122' 18032+0047 BAL1192 distance=125' 18121+0207 BAL1957 distance=129' 18103+0209 DAL 18AB distance=130' 18103+0209 DAL 18AC distance=130' 18036+0107 KPP 571 distance=130' 18185-0105 TDT 786 distance=131' 18181-0120 HDS2587AB distance=134' 18181-0120 GII 265AC distance=134' 18069+0159 BAL1498 distance=134' 18083+0209 BAL1954 distance=135' 18081+0213 BU 636AB distance=140' 18081+0213 BU 636AC distance=140' 18081+0213 BU 636AD distance=140' 18081+0213 GII 259Aa,Ab distance=140' 18040-0135 BAL 579 distance=143' 18015+0006 WTT 1 distance=143' 18083+0230 NYS 7BC distance=148' 18083+0230 BAL1953AB distance=148' 18023+0109 J 2669 distance=149' 18080+0222 WLY 9 distance=149' 18129+0228 HEI 559 distance=152' 18040+0150 TOK 695 distance=152' 18104+0232 STF2288 distance=152' 18076+0224 BAL1952 distance=153' 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 18110-0000 RST5106 4 1.9
Show 18110-0020 NSN 151 152 4.0 20
Show 18117-0023 TDT 732 47 0.4 25
Show 18104+0033 STF2286 315 3.0 34
Show 18082-0017 KPP2776 95 3.0 46
Show 18140+0009 BAL1193 277 16.5 46
Show 18087+0034 NSN 702 313 3.7 49
Show 18146+0011 STF2294 93 1.3 55
Show 18113+0058 CVR 212 346 99.8 59
Show 18075+0029 CBL 166 347 45.1 61
Show 18119-0104 RST5107 157 0.4 66
Show 18080-0047 RST5102 305 3.6 66
Show 18061-0022 A 1167 149 5.1 77
Show 18163+0000 J 2512 204 3.9 80
Show 18054-0019 A 1166 90 0.6 86
Show 18056+0051 J 518 142 5.1 96
Show 18065-0109 HDS2552 325 0.2 98
Show 18166-0058 RST5109 114 2.1 102
Show 18061+0127 BAL1497 160 7.2 114
Show 18123+0154 A 2260 AB 107 1.9 116
Show 18123+0154 RAO 66 AC 72 17.2 116
Show 18117+0200 BAL1499 151 6.3 121
Show 18079+0153 OSO 93 AB 21 12.7 122
Show 18079+0153 OSO 93 AC 295 13.1 122
Show 18079+0153 OSO 93 AD 171 17.6 122
Show 18079+0153 OSO 93 AE 66 21.7 122
Show 18079+0153 OSO 93 AF 194 20.9 122
Show 18032+0047 BAL1192 257 4.7 125
Show 18121+0207 BAL1957 231 8.7 129
Show 18103+0209 DAL 18 AB 274 12.5 130
Show 18103+0209 DAL 18 AC 314 45.0 130
Show 18036+0107 KPP 571 11 5.3 130
Show 18185-0105 TDT 786 45 2.3 131
Show 18181-0120 HDS2587 AB 181 0.1 134
Show 18181-0120 GII 265 AC 167 1.8 134
Show 18069+0159 BAL1498 255 3.0 134
Show 18083+0209 BAL1954 226 13.6 135
Show 18081+0213 BU 636 AB 120 1.4 140
Show 18081+0213 BU 636 AC 93 11.7 140
Show 18081+0213 BU 636 AD 348 40.8 140
Show 18081+0213 GII 259 Aa,Ab 168 0.1 140
Show 18040-0135 BAL 579 359 7.1 143
Show 18015+0006 WTT 1 203 0.7 143
Show 18083+0230 NYS 7 BC 84 16.0 148
Show 18083+0230 BAL1953 AB 122 17.1 148
Show 18023+0109 J 2669 247 5.5 149
Show 18080+0222 WLY 9 94 16.4 149
Show 18129+0228 HEI 559 173 0.8 152
Show 18040+0150 TOK 695 23 0.1 152
Show 18104+0232 STF2288 58 15.9 152
Show 18076+0224 BAL1952 153 13.5 153

 
 
WDS 18110-0000 : COMPONENTS
 
 
  A
B pa=3.8°
sep=1.91"
 
 
18110-0000 A
 
 
Componente originario normalizzato AB Name HD 166520 Coord arcsec 2000 181100.14-000010.7 Mag 9.29
Spectral class K0 (yellow-orange) PmRA 28.00 PmDE 9.0 SAO 142138
Tycho2 5097-00199-1 HD 166520 DM BD-00 3432
Tycho2
Tycho2 5097-00199-1 Pflag RAmdeg 272.75059993 DEmdeg -0.00298459
PmRA 29.0 PmDE 4.9 E RAmdeg 14 E DEmdeg 15
E pmRA 1.0 E pmDE 1.0 EpRAm 1988.66 EpDEm 1987.84
Num 10 Q RAmdeg 0.6 Q DEmdeg 0.8 Q pmRA 0.7
Q pmDE 0.8 BTmag 9.967 E BTmag 0.029 VTmag 9.290
E VTmag 0.023 Prox 999 TYC T HIP
CCDM RAdeg 272.75053361 DEdeg -0.00299806 EpRA 1990 1.83
EpDE 1990 1.82 E RAdeg 15.2 E DEdeg 16.6 Posflg
Corr 0.2
SAO
SAO 142138 DelFlag RA1950 PmRA1950 0.0018
DE1950 PmDE1950 -0.004 Vmag 9 SpType K0
Double code Source 31 CatNum 4513 DM BD-00 3432
DMcomp BDsup HD 166520 M HD 0
GC RA1950rad 4.74920462 DE1950rad -0.00026003 PmRA2000 0.002
PmDE2000 -0.004
 
 
18110-0000 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 181100.15+000012.6 Mag 11.7 Calc delta mag 2.41
Calc coord yes