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Current system
18112-1642
RST 4000
HD 166418


Nearby doubles
10' : 18106-1645
S 700AB

21' : 18107-1624
FEN 27

22' : 18103-1700
ARA 268

28' : 18108-1709
HU 195AB

31' : 18102-1616
ARA 98

34' : 18093-1624
BRT 627

34' : 18099-1710
ARA 267

34' : 18128-1618
HJ 2821AB

39' : 18117-1605
J 1620AB

39' : 18095-1712
SKF 94AB

41' : 18112-1723
RST3161

47' : 18143-1631
J 1648

47' : 18080-1637
RST3996

55' : 18079-1709
ARA 265

57' : 18124-1548
BRT 586

61' : 18154-1648
HJ 2824

63' : 18118-1541
HO 429

64' : 18154-1622
J 1649

64' : 18105-1745
J 2197AB

67' : 18157-1658
FOX 223

72' : 18130-1537
J 2200

72' : 18159-1706
FOX 224

74' : 18066-1712
HJ 2818

75' : 18136-1536
BU 131AB

76' : 18156-1602
AOT 72

76' : 18160-1713
ARA 273



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18112-1642 RST 4000 (HD 166418)

 
 
18h 11m 13.23s -16° 42' 14.1" P.A. 292.00 sep 0.5 mag 8.54,10.19 Sp B0Ia/ab dist. 800 pc (2609.6 l.y.)
 
 
Coord 2000 18112-1642 Discov num RST4000 Comp Coord arcsec 2000 18 11 13.23 -16 42 14.1
Date first 1937 Date last 1991 Obs 5
Pa first 288 Pa last 292.4 P.A. Now (θ) 292.4°
Sep first 0.6 Sep last 0.54 Sep. Now (ρ) 0.54"
Mag pri 8.54 Mag sec 10.19 delta mag (ΔM) 1.65 Spectral class B0Ia/ab (blue-white)
Pri motion ra +001 Sec motion ra +001
Pri motion dec +001 Sec motion dec +001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 166418 Constellation Sagittarius SAO 161155 HIP 89111
Tycho2 6264-00701-1 Gaia DR2 4145571772051266304 HD 166418 BD BD-16 4744
Distance 800 Distance ly 2609.6
 
 
WDS 18112-1642 RST 4000 (HD 166418) : 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
18112-1642 RST4000 1991 5 292 0.5 8.54 10.19 B0Ia/ab D 181113.23-164214.1

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

 
 
WDS 18112-1642 RST 4000 (HD 166418) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18112-1642 RST 4000 (HD 166418) : MEASURES
 
 
No records found.

 
 
WDS 18112-1642 (HD 166418) : VIRTUAL EYEPIECE
 
 

18112-1642 RST4000A mag 8.54 Sp B0Ia/ab 18112-1642 RST4000B sep 0.5 P.A. 293.30 mag 10.19 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18112-1642 (HD 166418) : ALADIN DSS IMAGE @ 18h 11m 13.23s -16° 42' 14.1"
 
 
 
 
WDS 18112-1642 RST 4000 (HD 166418) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18112-1642 RST4000 distance=0' 18106-1645 S 700AB distance=10' 18106-1645 S 700AC distance=10' 18106-1645 ABH 94AD distance=10' 18106-1645 ABH 94AE distance=10' 18106-1645 ABH 94AF distance=10' 18106-1645 S 700AG distance=10' 18107-1624 FEN 27 distance=21' 18103-1700 ARA 268 distance=22' 18108-1709 HU 195AB distance=28' 18108-1709 HJ 593AC distance=28' 18102-1616 ARA 98 distance=31' 18093-1624 BRT 627 distance=34' 18099-1710 ARA 267 distance=34' 18128-1618 HJ 2821AB distance=34' 18128-1618 BU 1463AC distance=34' 18117-1605 J 1620BC distance=39' 18117-1605 J 1620BD distance=39' 18117-1605 J 1620AB distance=39' 18117-1605 ABH 95AE distance=39' 18117-1605 ABH 95AF distance=39' 18095-1712 SKF 94AB distance=39' 18095-1712 SKF 94AC distance=39' 18112-1723 RST3161 distance=41' 18143-1631 J 1648 distance=47' 18080-1637 RST3996 distance=47' 18079-1709 ARA 265 distance=55' 18124-1548 BRT 586 distance=57' 18154-1648 HJ 2824 distance=61' 18118-1541 HO 429 distance=63' 18154-1622 J 1649 distance=64' 18105-1745 J 2197AB distance=64' 18105-1745 J 2197BC distance=65' 18157-1658 FOX 223 distance=67' 18130-1537 J 2200 distance=72' 18159-1706 FOX 224 distance=72' 18066-1712 HJ 2818 distance=74' 18136-1536 BU 131BC distance=75' 18136-1536 BU 131AB distance=75' 18136-1536 FOX 221AD distance=75' 18136-1536 BU 131AC distance=75' 18156-1602 AOT 72 distance=76' 18160-1713 ARA 273 distance=76' 18146-1742 SKF 96 distance=77' 18167-1649 TOB 278AB distance=79' 18167-1649 TOB 278BC distance=79' 18165-1652 HJ 2826AB distance=80' 18165-1652 DAM 104AC distance=80' 18165-1652 WFC 290AD distance=80' 18152-1738 ARA 270 distance=81' 18168-1631 SNA 84AB distance=82' 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 18112-1642 RST4000 292 0.5
Show 18106-1645 S 700 AB 291 18.8 10
Show 18106-1645 S 700 AC 353 28.6 10
Show 18106-1645 ABH 94 AD 348 47.7 10
Show 18106-1645 ABH 94 AE 65 58.0 10
Show 18106-1645 ABH 94 AF 49 99.2 10
Show 18106-1645 S 700 AG 297 35.6 10
Show 18107-1624 FEN 27 21 4.6 21
Show 18103-1700 ARA 268 304 14.0 22
Show 18108-1709 HU 195 AB 71 1.3 28
Show 18108-1709 HJ 593 AC 312 19.8 28
Show 18102-1616 ARA 98 76 9.0 31
Show 18093-1624 BRT 627 220 4.6 34
Show 18099-1710 ARA 267 348 14.7 34
Show 18128-1618 HJ 2821 AB 278 7.8 34
Show 18128-1618 BU 1463 AC 12 53.1 34
Show 18117-1605 J 1620 BC 235 7.3 39
Show 18117-1605 J 1620 BD 11 8.0 39
Show 18117-1605 J 1620 AB 272 27.8 39
Show 18117-1605 ABH 95 AE 346 46.8 39
Show 18117-1605 ABH 95 AF 300 120.2 39
Show 18095-1712 SKF 94 AB 243 4.6 39
Show 18095-1712 SKF 94 AC 279 6.2 39
Show 18112-1723 RST3161 241 0.4 41
Show 18143-1631 J 1648 90 6.2 47
Show 18080-1637 RST3996 90 0.2 47
Show 18079-1709 ARA 265 326 14.2 55
Show 18124-1548 BRT 586 76 5.1 57
Show 18154-1648 HJ 2824 74 21.9 61
Show 18118-1541 HO 429 30 4.3 63
Show 18154-1622 J 1649 337 3.4 64
Show 18105-1745 J 2197 AB 109 72.6 64
Show 18105-1745 J 2197 BC 82 6.2 65
Show 18157-1658 FOX 223 325 5.6 67
Show 18130-1537 J 2200 222 7.7 72
Show 18159-1706 FOX 224 42 6.5 72
Show 18066-1712 HJ 2818 139 17.7 74
Show 18136-1536 BU 131 BC 310 6.2 75
Show 18136-1536 BU 131 AB 277 3.2 75
Show 18136-1536 FOX 221 AD 34 40.8 75
Show 18136-1536 BU 131 AC 300 9.2 75
Show 18156-1602 AOT 72 348 8.4 76
Show 18160-1713 ARA 273 271 8.7 76
Show 18146-1742 SKF 96 50 3.3 77
Show 18167-1649 TOB 278 AB 108 25.7 79
Show 18167-1649 TOB 278 BC 113 17.2 79
Show 18165-1652 HJ 2826 AB 257 8.9 80
Show 18165-1652 DAM 104 AC 55 5.5 80
Show 18165-1652 WFC 290 AD 204 5.3 80
Show 18152-1738 ARA 270 333 15.0 81
Show 18168-1631 SNA 84 AB 117 5.1 82

 
 
WDS 18112-1642 : COMPONENTS
 
 
  A
B pa=293.3°
sep=0.52"
 
 
18112-1642 A
 
 
Componente originario normalizzato AB Name HD 166418 Coord arcsec 2000 181113.23-164214.1 Mag 8.54
Spectral class B0Ia/ab (blue-white) PmRA 1.00 PmDE 1.0 SAO 161155
HIP 89111 Tycho2 6264-00701-1 HD 166418 BD BD-16 4744
Tycho2
Tycho2 6264-00701-1 Pflag RAmdeg 272.80511007 DEmdeg -16.70390117
PmRA 1.1 PmDE 0.5 E RAmdeg 6 E DEmdeg 8
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.04 EpDEm 1990.45
Num 12 Q RAmdeg 1.5 Q DEmdeg 1.4 Q pmRA 1.7
Q pmDE 1.5 BTmag 8.782 E BTmag 0.019 VTmag 8.373
E VTmag 0.014 Prox 870 TYC T HIP 89111
CCDM AB RAdeg 272.80510750 DEdeg -16.70390306 EpRA 1990 1.85
EpDE 1990 1.77 E RAdeg 6.4 E DEdeg 8.3 Posflg P
Corr 0.1
SAO
SAO 161155 DelFlag RA1950 PmRA1950 0.0013
DE1950 PmDE1950 0.003 Vmag 8.8 SpType B3
Double code Source 21 CatNum 6578 DM BD-16 4744
DMcomp BDsup HD 166418 M HD 0
GC RA1950rad 4.74870789 DE1950rad -0.29174489 PmRA2000 0.0014
PmDE2000 0.005
Hipparcos
Catalog H HIP 89111 Proxy H RAhms 18 11 13.23
DEdms -16 42 14.1 Vmag 8.33 VarFlag R Vmag G
RAdeg 272.805 DEdeg -16.7039 AstroRef A Plx 0.54
CCDM 18112-1642 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 291 Rho 0.711 HD 166418 BD BD-16 4744
CD CP Dm number -16 4744 VIred 0.54
SpType B0Ia... R SpType Coord arcsec 2000 181113.23-164214.1
Hipparcos 2
HIP 89111 Sn 15 So 3 Nc 2
RArad 4.7613476221 DErad -0.2915381686 Plx -1.25 PmRA -1.27
PmDE -0.06 E RArad 1.11 E DErad 0.58 E Plx 1.29
E pmRA 1.3 E pmDE 0.67 Hpmag 8.3785 E Hpmag 0.0016
SHp 0.011 VA 0 BV 0.465 E BV 0.025
VI 0.54
CCDM
Ccdm 18112-1642 RComp Comp A Note1
Note2 Discov num DRAs 1.31 DDEs -13.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.8 Sp B3 PmNote *
PmRA 19 PmDE 3 Dm number -16 4744 Cat1 BD
Name2 161155 Cat2 SAO HD 166418 M HD
ADS BDS M ADS BDS N IDS IDS 18054S1643A
HIC 89111
 
 
18112-1642 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 181113.20-164213.9 Mag 10.19 PmRA 1.00
PmDE 1.0 Calc delta mag 1.65 Calc coord yes
CCDM
Ccdm 18112-1642 RComp Comp B Note1
Note2 Discov num RST4000 DRAs DDEs
R dRAs Year 1937 Theta 288 Rho 0.6
Obs 2 Vmag 11.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18054S1643B
HIC 89111