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Doubles in session


Current system
18218-1619
CHR 69
V4390 Sgr


Nearby doubles
8' : 18213-1622
FGS 31

19' : 18210-1633
BRT 630

23' : 18204-1630
TOB 287

27' : 18234-1635
WRH 11

28' : 18201-1631
TDT 802

35' : 18194-1618
BRT 628

38' : 18196-1600
DAM 106

41' : 18196-1601
OL 13

43' : 18195-1647
TOB 284AB

46' : 18231-1701
HU 237

46' : 18202-1539
BRT 629

47' : 18197-1655
TOB 285

47' : 18187-1631
TOB 281

48' : 18196-1630
WRH 10AB

49' : 18204-1535
BRT1944

49' : 18203-1535
J 2207

51' : 18205-1706
TDT 806

51' : 18247-1648
KRV 49

53' : 18254-1631
HU 64AB

53' : 18199-1704
SMY9003

53' : 18202-1707
TDT 803

56' : 18210-1714
J 1627

57' : 18209-1524
BRT 589

58' : 18214-1522
CBL 168

60' : 18177-1611
ARA 102

65' : 18175-1638
HJ 2829AB



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

18218-1619 CHR 69 (V4390 Sgr)

 
 
18h 21m 48.85s -16° 19' 28.5" P.A. 209.00 sep 0.1 mag 7.90, Sp K0III+A dist. 735.29 pc (2398.52 l.y.)
 
 
Coord 2000 18218-1619 Discov num CHR  69 Comp Coord arcsec 2000 18 21 48.85 -16 19 28.5
Date first 1985 Date last 2007 Obs 3
Pa first 11 Pa last 209.3 P.A. Now (θ) 209.3°
Sep first 0.1 Sep last 0.076 Sep. Now (ρ) 0.076"
Mag pri 7.90 Mag sec delta mag (ΔM) Spectral class K0III+A (yellow-orange/white)
Pri motion ra -003 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes X (Dubious double)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V4390 Sgr Constellation Sagittarius SAO 161385 HIP 90001
Tycho2 6265-01796-1 Gaia DR2 4097798477173398144 HD 168701 GC 25052
BD BD-16 4836 Distance 735.29 Distance ly 2398.52
 
 
WDS 18218-1619 CHR 69 (V4390 Sgr) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
CHR (see papers by Hartkopf, Mason, McAlister, etc.)
CHR9999 Sc j McAlister, H.A., Hartkopf, W.I., et al. ...................
CHR9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18218-1619 CHR 69 1991 2 307 0.1 7.90   K0III+A 182148.85-161928.5
18218-1619 CHR 69 2007 3 209 0.1 7.90   K0III+A 182148.85-161928.5

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

 
 
WDS 18218-1619 CHR 69 (V4390 Sgr) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18218-1619 CHR 69 (V4390 Sgr) : MEASURES
 
 
No records found.

 
 
WDS 18218-1619 (V4390 Sgr) : VIRTUAL EYEPIECE
 
 

18218-1619 CHR 69A mag 7.9 Sp K0III 18218-1619 CHR 69B sep 0.1 P.A. 208.30 Sp A virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18218-1619 (V4390 Sgr) : ALADIN DSS IMAGE @ 18h 21m 48.85s -16° 19' 28.5"
 
 
 
 
WDS 18218-1619 CHR 69 (V4390 Sgr) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18218-1619 CHR 69 distance=0' 18213-1622 FGS 31 distance=8' 18210-1633 BRT 630 distance=19' 18204-1630 TOB 287 distance=23' 18234-1635 WRH 11 distance=27' 18201-1631 TDT 802 distance=28' 18194-1618 BRT 628 distance=35' 18196-1600 DAM 106 distance=38' 18196-1601 OL 13 distance=41' 18195-1647 TOB 284AB distance=43' 18195-1647 TOB 284AC distance=43' 18231-1701 HU 237 distance=46' 18202-1539 BRT 629 distance=46' 18197-1655 TOB 285 distance=47' 18187-1631 TOB 281 distance=47' 18196-1630 WRH 10AB distance=48' 18196-1630 WRH 10AC distance=48' 18204-1535 BRT1944 distance=49' 18203-1535 J 2207 distance=49' 18205-1706 TDT 806 distance=51' 18247-1648 KRV 49 distance=51' 18254-1631 HU 64AB distance=53' 18254-1631 HU 64AC distance=53' 18254-1631 HU 64AD distance=53' 18199-1704 SMY9003 distance=53' 18202-1707 TDT 803 distance=53' 18210-1714 J 1627 distance=56' 18209-1524 BRT 589 distance=57' 18214-1522 CBL 168 distance=58' 18177-1611 ARA 102 distance=60' 18175-1638 HJ 2829AB distance=65' 18175-1638 HJ 2829AC distance=65' 18175-1639 TOB 280 distance=66' 18236-1720 KPP2762 distance=67' 18174-1639 TOB 279 distance=67' 18177-1652 BU 463 distance=68' 18229-1726 J 2209 distance=69' 18266-1612 J 461 distance=70' 18168-1622 J 1650 distance=70' 18228-1727 J 2210 distance=70' 18178-1537 J 2205AB distance=72' 18178-1537 J 2205AC distance=72' 18168-1631 SNA 84AB distance=73' 18168-1631 SNA 84AC distance=73' 18168-1631 SNA 84AD distance=73' 18222-1505 MTL 3BC distance=75' 18222-1505 STF2306AB distance=75' 18172-1656 ADP 3 distance=77' 18190-1724 TVB 301 distance=77' 18170-1548 J 2513 distance=77' 18197-1730 TDT 796 distance=77' 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 18218-1619 CHR 69 209 0.1
Show 18213-1622 FGS 31 202 1.1 8
Show 18210-1633 BRT 630 354 5.5 19
Show 18204-1630 TOB 287 196 14.5 23
Show 18234-1635 WRH 11 92 2.5 27
Show 18201-1631 TDT 802 349 1.8 28
Show 18194-1618 BRT 628 319 4.4 35
Show 18196-1600 DAM 106 340 5.8 38
Show 18196-1601 OL 13 176 4.6 41
Show 18195-1647 TOB 284 AB 178 13.3 43
Show 18195-1647 TOB 284 AC 63 20.0 43
Show 18231-1701 HU 237 28 0.5 46
Show 18202-1539 BRT 629 213 3.2 46
Show 18197-1655 TOB 285 194 19.4 47
Show 18187-1631 TOB 281 80 21.3 47
Show 18196-1630 WRH 10 AB 296 6.1 48
Show 18196-1630 WRH 10 AC 153 37.5 48
Show 18204-1535 BRT1944 127 4.6 49
Show 18203-1535 J 2207 106 5.7 49
Show 18205-1706 TDT 806 101 0.5 51
Show 18247-1648 KRV 49 331 7.9 51
Show 18254-1631 HU 64 AB 12 3.7 53
Show 18254-1631 HU 64 AC 18 15.6 53
Show 18254-1631 HU 64 AD 349 24.7 53
Show 18199-1704 SMY9003 134 24.8 53
Show 18202-1707 TDT 803 195 0.7 53
Show 18210-1714 J 1627 239 4.9 56
Show 18209-1524 BRT 589 119 6.2 57
Show 18214-1522 CBL 168 26 18.9 58
Show 18177-1611 ARA 102 95 10.6 60
Show 18175-1638 HJ 2829 AB 320 5.0 65
Show 18175-1638 HJ 2829 AC 167 6.3 65
Show 18175-1639 TOB 280 290 14.9 66
Show 18236-1720 KPP2762 239 3.2 67
Show 18174-1639 TOB 279 194 13.2 67
Show 18177-1652 BU 463 103 2.0 68
Show 18229-1726 J 2209 342 7.4 69
Show 18266-1612 J 461 350 2.8 70
Show 18168-1622 J 1650 249 4.5 70
Show 18228-1727 J 2210 286 8.0 70
Show 18178-1537 J 2205 AB 100 4.6 72
Show 18178-1537 J 2205 AC 47 13.9 72
Show 18168-1631 SNA 84 AB 117 5.1 73
Show 18168-1631 SNA 84 AC 199 5.5 73
Show 18168-1631 SNA 84 AD 261 6.8 73
Show 18222-1505 MTL 3 BC 71 0.8 75
Show 18222-1505 STF2306 AB 222 9.1 75
Show 18172-1656 ADP 3 180 3.4 77
Show 18190-1724 TVB 301 184 7.2 77
Show 18170-1548 J 2513 274 4.0 77
Show 18197-1730 TDT 796 93 0.4 77

 
 
WDS 18218-1619 : COMPONENTS
 
 
  A
B pa=208.3°
sep=0.08"
 
 
18218-1619 A
 
 
Componente originario normalizzato AB Name V4390 Sgr Coord arcsec 2000 182148.85-161928.5 Mag 7.9
Spectral class K0III (yellow-orange) PmRA -3.00 PmDE 1.0 SAO 161385
HIP 90001 Tycho2 6265-01796-1 HD 168701 GC 25052
BD BD-16 4836
Tycho2
Tycho2 6265-01796-1 Pflag RAmdeg 275.45356045 DEmdeg -16.32458534
PmRA 1.0 PmDE -2.5 E RAmdeg 7 E DEmdeg 7
E pmRA 0.9 E pmDE 0.9 EpRAm 1989.88 EpDEm 1989.92
Num 19 Q RAmdeg 1.0 Q DEmdeg 0.7 Q pmRA 1.0
Q pmDE 0.7 BTmag 9.166 E BTmag 0.020 VTmag 7.821
E VTmag 0.012 Prox 999 TYC T HIP 90001
CCDM RAdeg 275.45355778 DEdeg -16.32457972 EpRA 1990 1.74
EpDE 1990 1.66 E RAdeg 6.6 E DEdeg 7.4 Posflg
Corr 0.0
SAO
SAO 161385 DelFlag RA1950 PmRA1950 0.0009
DE1950 PmDE1950 0 Vmag 7.7 SpType +++
Double code Source 70 CatNum 25052 DM BD-16 4836
DMcomp BDsup HD 168701 M HD 9
GC 25052 RA1950rad 4.794973 DE1950rad -0.28534813 PmRA2000 0.0011
PmDE2000 0.001
Hipparcos
Catalog H HIP 90001 Proxy RAhms 18 21 48.85
DEdms -16 19 28.5 Vmag 7.64 VarFlag 2 R Vmag H
RAdeg 275.454 DEdeg -16.3246 AstroRef Plx 1
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 168701 BD BD-16 4836
CD CP Dm number -16 4836 VIred 1.11
SpType B9V: R SpType Coord arcsec 2000 182148.85-161928.5
Hipparcos 2
HIP 90001 Sn 5 So 0 Nc 1
RArad 4.8075715283 DErad -0.2849176442 Plx 1.36 PmRA 1.2
PmDE -1.63 E RArad 0.8 E DErad 0.6 E Plx 0.86
E pmRA 0.95 E pmDE 0.71 Hpmag 7.7773 E Hpmag 0.0059
SHp 0.042 VA 1 BV 1.116 E BV 0.019
VI 1.08
CCDM
Ccdm 18218-1619 RComp Comp A Note1
Note2 Discov num DRAs 0.90 DDEs -28.3
R dRAs 81 Year Theta Rho
Obs 2 Vmag 7.9 Sp K0 PmNote @
PmRA 18 PmDE 3 Dm number -16 4836 Cat1 BD
Name2 161385 Cat2 SAO HD 168701 M HD
ADS BDS M ADS BDS N IDS W IDS 18218-1619A
HIC 90001
 
 
18218-1619 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182148.85-161928.6 Spectral class A (white) Calc delta mag 7.9
Calc coord yes
CCDM
Ccdm 18218-1619 RComp Comp B Note1
Note2 Discov num CHR 69 DRAs DDEs
R dRAs Year 1985 Theta 11 Rho 0.1
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS W IDS 18218-1619B
HIC 90001