18346-2734 I 1027 CD

 
 
18h 34m 39.20s -27° 34' 27.7" P.A. 69.00 sep 1.9 mag 11.01,12.00 Sp A2V
 
 
Coord 2000 18346-2734 Discov num I  1027 Comp CD Coord arcsec 2000 18 34 39.20 -27 34 27.7
Date first 1910 Date last 2015 Obs 4
Pa first 60 Pa last 69 P.A. Now (θ) 69°
Sep first 1.6 Sep last 1.926 Sep. Now (ρ) 1.926"
Mag pri 11.01 Mag sec 12.00 delta mag (ΔM) 0.99 Spectral class A2V (white)
Pri motion ra -009 Sec motion ra
Pri motion dec -009 Sec motion dec
Notes N S (See Notes, Parallax indidates non-physical)
This double is not physical.
 
 
18346-2734 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 186996 18 34 38 -27 33 58 TOK 422 Aa,Ab 2021 8 102 0.1 9.80 11.00 1.20 Y
Show 186996 18 34 38 -27 33 58 I 1026 AB 2015 7 41 9.0 8.90 13.00 4.10
Show HD 171226 186996 18 34 38 -27 33 58 I 1026 A,CD 1999 4 145 36.1 8.90 11.00 2.10
Show 18 34 39 -27 34 28 I 1027 CD 2015 4 69 1.9 11.01 12.00 0.99 <===
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Gaia DR2 4048713873001096576
 
 
WDS 18346-2734 I 1027 CD : NOTES
 
 
discov_num notes refcode
I 1026 AB + TOK 422Aa,Ab: HIP 91075 was noted as a double-lined binary by
the GCS (one observation only). The separation of 86mas implies a
period of ~10yr, while the double-lined observation matches the
moderate magnitude difference (estimated masses 1.04 and 0.77 Msun.
The star is an X-ray source, so a future combined orbit could
determine masses for testing evolutionary models of young stars. The
sky around the object is quite crowded; the 9" companion I 1026 is
optical (it moves too fast). Tok2015c
I 1027 CD: CPD-27@6461.
 
 
REFERENCES
 
 
refcode metd author reference
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
 
 
DISCOVERER
 
 
idgroup discov author
1 I Innes, R.T.A.
5 I MNRAS 57, 533, 1897 (data also in I__1897b,
5 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18346-2734 I 1027 CD 1928 3 68 2.0 11.01 12.00 N 183439.20-273427.7
18346-2734 I 1027 CD 2015 4 69 1.9 11.01 12.00 A2V NS 183439.20-273427.7

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

 
 
WDS 18346-2734 I 1027 CD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18346-2734 I 1027 CD : MEASURES
 
 
No records found.

 
 
WDS 18346-2734 : VIRTUAL EYEPIECE
 
 

18346-2734 I  1026A mag 8.9 Sp G3/5V 18346-2734 TOK 422Ab sep 0.1 P.A. 103.90 mag 11 18346-2734 I  1026B sep 8.6 P.A. 37.40 mag 13 18346-2734 I  1027C sep 36.0 P.A. 144.80 mag 11.01 Sp A2V 18346-2734 I  1027D sep 36.4 P.A. 142.10 mag 12 virtual eyepiece
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Radius:
Components only
 
 
WDS 18346-2734 : ALADIN DSS IMAGE @ 18h 34m 39.20s -27° 34' 27.7"
 
 
 
 
WDS 18346-2734 I 1027 CD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18346-2734  I  1027CD distance=0' 18346-2734  I  1026AB distance=1' 18346-2734  I  1026A,CD distance=1' 18346-2734  TOK 422Aa,Ab distance=1' 18328-2747  KPP 417 distance=28' 18325-2753  SKF2131 distance=35' 18311-2738  J  1632 distance=48' 18312-2757  RST2060Ba,Bb distance=51' 18389-2736  RST2069 distance=56' 18335-2832  BRT3073 distance=60' 18348-2837  B   395 distance=64' 18307-2700  RST2059 distance=64' 18319-2831  RST2062 distance=68' 18400-2743  SKF2132 distance=72' 18322-2630  SKF2066 distance=73' 18296-2803  SKF2128 distance=74' 18359-2849  DOO  71CD distance=76' 18359-2849  HJ 5051AB distance=77' 18359-2849  HJ 5051AC distance=77' 18286-2717  J  2214 distance=79' 18396-2817  J  1596 distance=79' 18356-2617  OCC9050Ba,Bb distance=79' 18356-2617  B   396AB distance=79' 18289-2716  OCC 185 distance=79' 18368-2617  RST3187AB distance=83' 18368-2617  RST3187AC distance=83' 18354-2607  TDT 949 distance=88' 18371-2612  VVV  58 distance=90' 18292-2640  B   391 distance=91' 18305-2848  HDS2624 distance=92' 18386-2850  TDT 971 distance=92' 18401-2638  B   397 distance=93' 18329-2906  SKF2130 distance=95' 18275-2725  FIN 267 distance=96' 18290-2635  WNO   6 distance=97' 18280-2651  I  1366 distance=100' 18281-2645  HDS2615AB distance=101' 18281-2645  ARY 126AC distance=101' 18277-2638  BU  133 distance=109' 18264-2749  B  2865 distance=111' 18261-2740  J  2211AB distance=116' 18261-2740  J  2211AC distance=116' 18279-2848  RST2056 distance=116' 18259-2752  RST2051 distance=118' 18257-2726  OCC 186 distance=119' 18259-2713  RST2050 distance=120' 18317-2541  OCC 264 distance=120' 18256-2724  COO 225AB distance=121' 18256-2724  SIN 109AC distance=121' 18292-2916  B  2450 distance=125' 18398-2920  RSS 487 distance=126' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 18346-2734 I 1027 CD 69 1.9
Show 18346-2734 I 1026 AB 41 9.0 1
Show 18346-2734 I 1026 A,CD 145 36.1 1
Show 18346-2734 TOK 422 Aa,Ab 102 0.1 1
Show 18328-2747 KPP 417 57 5.0 28
Show 18325-2753 SKF2131 47 4.7 35
Show 18311-2738 J 1632 165 5.3 48
Show 18312-2757 RST2060 Ba,Bb 8 0.6 51
Show 18389-2736 RST2069 123 1.7 56
Show 18335-2832 BRT3073 281 3.9 60
Show 18348-2837 B 395 278 1.3 64
Show 18307-2700 RST2059 5 1.9 64
Show 18319-2831 RST2062 3 0.8 68
Show 18400-2743 SKF2132 237 12.4 72
Show 18322-2630 SKF2066 282 17.5 73
Show 18296-2803 SKF2128 291 4.8 74
Show 18359-2849 DOO 71 CD 34 4.3 76
Show 18359-2849 HJ 5051 AB 237 9.3 77
Show 18359-2849 HJ 5051 AC 296 91.6 77
Show 18286-2717 J 2214 119 5.3 79
Show 18396-2817 J 1596 105 8.2 79
Show 18356-2617 OCC9050 Ba,Bb -1 0.0 79
Show 18356-2617 B 396 AB 218 1.7 79
Show 18289-2716 OCC 185 -1 0.1 79
Show 18368-2617 RST3187 AB 201 0.1 83
Show 18368-2617 RST3187 AC 41 12.7 83
Show 18354-2607 TDT 949 91 0.7 88
Show 18371-2612 VVV 58 171 1.7 90
Show 18292-2640 B 391 65 0.2 91
Show 18305-2848 HDS2624 230 0.1 92
Show 18386-2850 TDT 971 163 0.5 92
Show 18401-2638 B 397 193 1.2 93
Show 18329-2906 SKF2130 134 3.0 95
Show 18275-2725 FIN 267 343 4.9 96
Show 18290-2635 WNO 6 182 41.8 97
Show 18280-2651 I 1366 225 0.4 100
Show 18281-2645 HDS2615 AB 186 0.3 101
Show 18281-2645 ARY 126 AC 135 54.1 101
Show 18277-2638 BU 133 230 0.6 109
Show 18264-2749 B 2865 298 11.4 111
Show 18261-2740 J 2211 AB 49 5.7 116
Show 18261-2740 J 2211 AC 196 11.4 116
Show 18279-2848 RST2056 27 2.6 116
Show 18259-2752 RST2051 116 1.4 118
Show 18257-2726 OCC 186 -1 0.1 119
Show 18259-2713 RST2050 77 2.0 120
Show 18317-2541 OCC 264 -1 0.1 120
Show 18256-2724 COO 225 AB 359 5.9 121
Show 18256-2724 SIN 109 AC 89 69.0 121
Show 18292-2916 B 2450 347 14.0 125
Show 18398-2920 RSS 487 303 11.5 126

 
 
WDS 18346-2734 : COMPONENTS
 
 
  A Ab B C
Ab pa=103.9°
sep=0.10"
 
B pa=37.4°
sep=8.58"
pa=36.8°
sep=8.54"
 
C pa=144.8°
sep=35.98"
pa=144.9°
sep=35.91"
pa=156.8°
sep=39.40"
 
D pa=142.1°
sep=36.38"
pa=142.2°
sep=36.30"
pa=154.3°
sep=39.44"
pa=66.6°
sep=1.74"
 
 
18346-2734 A
 
 
Name HD 171226 Coord arcsec 2000 183437.64-273358.3 Mag 8.9 Spectral class G3/5V (yellow)
PmRA 1.00 PmDE 16.0 SAO 186996 HIP 91075
Tycho2 6866-01975-1 HD 171226 ADS 11452 CD CD-2712977
CP CP-27 6460
Tycho2
Tycho2 6866-01975-1 Pflag RAmdeg 278.65681708 DEmdeg -27.56617578
PmRA 1.3 PmDE 15.0 E RAmdeg 11 E DEmdeg 13
E pmRA 1.6 E pmDE 1.6 EpRAm 1990.01 EpDEm 1989.14
Num 7 Q RAmdeg 0.7 Q DEmdeg 1.5 Q pmRA 0.8
Q pmDE 1.5 BTmag 9.637 E BTmag 0.026 VTmag 8.900
E VTmag 0.019 Prox 999 TYC T HIP 91075
CCDM RAdeg 278.65681361 DEdeg -27.56621389 EpRA 1990 1.68
EpDE 1990 1.44 E RAdeg 11.9 E DEdeg 14.3 Posflg
Corr 0.0
SAO
SAO 186996 DelFlag RA1950 PmRA1950 0.0008
DE1950 PmDE1950 0.005 Vmag 8.6 SpType G0
Double code Source 24 CatNum 12059 DM CD-2712977
DMcomp BDsup HD 171226 M HD 0
GC RA1950rad 4.84978317 DE1950rad -0.48182379 PmRA2000 0.0007
PmDE2000 0.005
Hipparcos
Catalog H HIP 91075 Proxy RAhms 18 34 37.64
DEdms -27 33 58.3 Vmag 8.79 VarFlag R Vmag H
RAdeg 278.657 DEdeg -27.5662 AstroRef Plx 16.22
CCDM 18346-2734 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 171226 BD
CD CD-2712977 CP CP-27 6460 Dm number -2712977 VIred 0.67
SpType G3/G5V R SpType Coord arcsec 2000 183437.64-273358.3
Hipparcos 2
HIP 91075 Sn 5 So 0 Nc 1
RArad 4.8634789769 DErad -0.4811210835 Plx 15.02 PmRA -2.16
PmDE 17.57 E RArad 1.14 E DErad 0.78 E Plx 1.14
E pmRA 1.55 E pmDE 1.11 Hpmag 8.9274 E Hpmag 0.0024
SHp 0.02 VA 0 BV 0.648 E BV 0.028
VI 0.71
CCDM
Ccdm 18346-2734 RComp Comp A Note1
Note2 Discov num DRAs 1.67 DDEs 1.2
R dRAs 10 Year Theta Rho
Obs 4 Vmag 8.2 Sp G0 PmNote *
PmRA 11 PmDE 5 Dm number -2712977 Cat1 CD
Name2 186996 Cat2 SAO HD 171226 M HD
ADS BDS A11452 M ADS BDS N IDS IDS 18284S2739A
HIC 91075
 
 
18346-2734 Ab
 
 
Coord arcsec 2000 183437.65-273358.3 Mag 11 Calc delta mag 1.2 Calc coord yes
 
 
18346-2734 B
 
 
Coord arcsec 2000 183438.03-273351.5 Mag 13 PmRA 11.00 PmDE 11.0
Calc delta mag 3.2 Calc coord yes
CCDM
Ccdm 18346-2734 RComp Comp B Note1
Note2 Discov num I 1026 DRAs DDEs
R dRAs Year 1927 Theta 036 Rho 9.1
Obs 1 Vmag 13.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11452 M ADS BDS N IDS IDS 18284S2739B
HIC 91075
 
 
18346-2734 C
 
 
Coord arcsec 2000 183439.20-273427.7 Mag 11.01 Spectral class A2V (white) PmRA -9.00
PmDE -9.0 Calc delta mag 1.21
CCDM
Ccdm 18346-2734 RComp Comp C Note1
Note2 Discov num DRAs DDEs
R dRAs Year Theta Rho
Obs Vmag 11.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 -27 6461 Cat2 CPD HD M HD
ADS BDS A11453 M ADS BDS N IDS IDS 18284S2739A
HIC
 
 
18346-2734 D
 
 
Coord arcsec 2000 183439.32-273427.0 Mag 12 Calc delta mag 2.2 Calc coord yes
CCDM
Ccdm 18346-2734 RComp C Comp D Note1
Note2 Discov num I 1027 DRAs DDEs
R dRAs Year 1927 Theta 069 Rho 2.0
Obs 1 Vmag 12.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11453 M ADS BDS N IDS IDS 18284S2739B
HIC