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Doubles in session


Current system
17085-3639
EGN 20 AB
HD 154682


Nearby doubles
18' : 17100-3641
BRT1710

34' : 17058-3633
TDS 853

38' : 17064-3706
TOK 310

39' : 17094-3716
HDS2423

44' : 17063-3714
HDO 266AB

48' : 17051-3702
WFC 185

51' : 17068-3553
B 895AB

51' : 17044-3631
B 889

55' : 17080-3733
JSP 707

56' : 17058-3554
TDT 210

57' : 17131-3651
B 901

61' : 17096-3738
TDT 238

66' : 17132-3714
B 2827

70' : 17029-3652
DAW 20

71' : 17128-3728
B 899

75' : 17055-3743
JSP 706

75' : 17091-3753
B 896

76' : 17084-3754
RST3070

76' : 17065-3527
B 894AB

79' : 17136-3729
TDS 858

82' : 17025-3603
HJ 4910

87' : 17137-3738
RST3969

88' : 17048-3753
HJ 4915

88' : 17076-3512
B 2403AB

89' : 17128-3751
TDT 264

91' : 17048-3757
B 892



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.

17085-3639 EGN 20 AB (HD 154682)

 
 
17h 08m 32.74s -36° 38' 34.2" P.A. 78.00 sep 1.0 mag 6.29,10.30 Sp G5V+M3V dist. 47.26 pc (154.16 l.y.)
 
 
Coord 2000 17085-3639 Discov num EGN  20 Comp AB Coord arcsec 2000 17 08 32.74 -36 38 34.2
Date first 2004 Date last 2005 Obs 3
Pa first 79 Pa last 78.2 P.A. Now (θ) 78.2°
Sep first 1.0 Sep last 0.981 Sep. Now (ρ) 0.981"
Mag pri 6.29 Mag sec 10.30 delta mag (ΔM) 4.01 Spectral class G5V+M3V (yellow/red)
Pri motion ra +045 Sec motion ra
Pri motion dec -085 Sec motion dec
Notes N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
17085-3639 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 154682 208457 17 08 33 -36 38 34 EGN 20 AB 2005 3 78 1.0 6.29 10.30 4.01 <===
Show 208457 17 08 33 -36 38 34 EGN 20 AC 2005 3 140 3.4 6.17 13.90 7.73
Show 208457 17 08 33 -36 38 34 EGN 20 AD 2005 1 113 4.3 6.17 15.90 9.73
Show 208457 17 08 33 -36 38 34 EGN 20 AE 2005 3 358 4.8 6.17 13.00 6.83
Show 208457 17 08 33 -36 38 34 EGN 20 AF 2005 3 57 5.0 6.17 13.80 7.63
Show 208457 17 08 33 -36 38 34 EGN 20 AG 2005 1 238 6.0 6.17 15.00 8.83
Show 208457 17 08 33 -36 38 34 EGN 20 AH 2005 1 169 6.4 6.17 16.20 10.03
Show 208457 17 08 33 -36 38 34 EGN 20 AI 2005 1 53 6.5 6.17 15.80 9.63
Show 208457 17 08 33 -36 38 34 EGN 20 AJ 2005 1 112 6.7 6.17 15.10 8.93
Show 208457 17 08 33 -36 38 34 EGN 20 AK 2005 1 109 10.0 6.17 16.10 9.93
Show 208457 17 08 33 -36 38 34 EGN 20 AL 2005 2 244 10.8 6.17 11.98 5.81
Show 208457 17 08 33 -36 38 34 EGN 20 AM 2015 4 34 20.2 7.75 13.90 6.15
13-fold system
13 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 154682 Constellation Scorpius SAO 208457 HIP 83874
Tycho2 7373-01297-1 Gaia DR2 5976865876277242112 HD 154682 GC 23113
CD CD-3611257 CP CP-36 7166 Distance 47.26 Distance ly 154.16
 
 
WDS 17085-3639 EGN 20 AB (HD 154682) : NOTES
 
 
discov_num notes refcode
EGN 20 System is close to galactic plane, so found to have 12 companion
candidates. The B component is physical, colors are compatible with an
M1.5-M4.5 spectral type and mass 0.27 +/- 0.02 Msun. The C component
is unbound, and the F component is likely unrelated as well. Single
epoch observations, so nature of D, G, H, I, J, K components unknown.
Nature of E and M are also inconclusive. Egn2007
 
 
REFERENCES
 
 
refcode metd author reference
Egn2007 Ao j Eggenberger, P., Udry, S., Chauvin, G. Beuzit, J.-L., Lagrange, A.-M., Segransan, 2007A&A...474..273E
Egn2007 D., & Mayor, M.
Egn2007 A&A 474, 273, 2007
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17085-3639 EGN 20 AB 2005 3 78 1.0 7.69   G5V M3V NVD 170832.74-363834.2

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

 
 
WDS 17085-3639 EGN 20 AB (HD 154682) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17085-3639 EGN 20 AB (HD 154682) : MEASURES
 
 
No records found.

 
 
WDS 17085-3639 (HD 154682) : VIRTUAL EYEPIECE
 
 

17085-3639 EGN 20A mag 6.29 Sp G5V 17085-3639 EGN 20B sep 0.8 P.A. 75.40 mag 10.3 Sp M3V 17085-3639 EGN 20C sep 3.1 P.A. 145.60 mag 13.9 17085-3639 EGN 20D sep 3.6 P.A. 117.90 mag 15.9 17085-3639 EGN 20E sep 4.8 P.A. 358.70 mag 13 17085-3639 EGN 20F sep 4.3 P.A. 50.60 mag 13.8 17085-3639 EGN 20G sep 5.2 P.A. 232.30 mag 15 17085-3639 EGN 20H sep 6.3 P.A. 171.10 mag 16.2 17085-3639 EGN 20I sep 5.7 P.A. 46.50 mag 15.8 17085-3639 EGN 20J sep 5.6 P.A. 117.20 mag 15.1 17085-3639 EGN 20K sep 8.2 P.A. 113.00 mag 16.1 17085-3639 EGN 20L sep 9.1 P.A. 238.70 mag 11.98 17085-3639 EGN 20M sep 19.0 P.A. 28.10 mag 13.9 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 17085-3639 (HD 154682) : ALADIN DSS IMAGE @ 17h 08m 32.74s -36° 38' 34.2"
 
 
 
 
WDS 17085-3639 EGN 20 AB (HD 154682) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17085-3639 EGN 20AB distance=0' 17100-3641 BRT1710 distance=18' 17058-3633 TDS 853 distance=34' 17064-3706 TOK 310 distance=38' 17094-3716 HDS2423 distance=39' 17063-3714 HDO 266AB distance=44' 17063-3714 HDO 266AC distance=44' 17063-3714 KOU 73AD distance=44' 17063-3714 HDO 266AE distance=44' 17051-3702 WFC 185 distance=48' 17068-3553 B 895AB distance=51' 17068-3553 HWE 85AB,C distance=51' 17044-3631 B 889 distance=51' 17080-3733 JSP 707 distance=55' 17058-3554 TDT 210 distance=56' 17131-3651 B 901 distance=57' 17096-3738 TDT 238 distance=61' 17132-3714 B 2827 distance=66' 17029-3652 DAW 20 distance=70' 17128-3728 B 899 distance=71' 17055-3743 JSP 706 distance=75' 17091-3753 B 896 distance=75' 17084-3754 RST3070 distance=76' 17065-3527 B 894AB distance=76' 17065-3527 SNA 63AC distance=76' 17136-3729 TDS 858 distance=79' 17025-3603 HJ 4910 distance=82' 17137-3738 RST3969 distance=87' 17048-3753 HJ 4915 distance=88' 17076-3512 B 2403AB distance=88' 17076-3512 SIN 125AC distance=88' 17128-3751 TDT 264 distance=89' 17048-3757 B 892 distance=91' 17046-3758 TDT 200 distance=93' 17046-3800 B 890 distance=95' 17139-3748 B 902 distance=95' 17048-3806 B 891AB distance=98' 17048-3806 B 891AC distance=98' 17082-3500 SNA 64 distance=99' 17006-3607 B 887 distance=101' 17041-3808 B 888 distance=104' 17038-3809 PBL 1AB distance=107' 17175-3645 TDT 297 distance=109' 17164-3545 HDO 267 distance=109' 17006-3545 B 886 distance=110' 17114-3825 HDS2427 distance=112' 17094-3445 HDS2422 distance=114' 16597-3726 JNN 233AB distance=117' 16597-3726 JNN 233AC distance=117' 16597-3726 JNN 233AD distance=117' 16597-3726 JNN 233AE distance=117' 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 17085-3639 EGN 20 AB 78 1.0
Show 17085-3639 EGN 20 AC 140 3.4
Show 17085-3639 EGN 20 AD 113 4.3
Show 17085-3639 EGN 20 AE 358 4.8
Show 17085-3639 EGN 20 AF 57 5.0
Show 17085-3639 EGN 20 AG 238 6.0
Show 17085-3639 EGN 20 AH 169 6.4
Show 17085-3639 EGN 20 AI 53 6.5
Show 17085-3639 EGN 20 AJ 112 6.7
Show 17085-3639 EGN 20 AK 109 10.0
Show 17085-3639 EGN 20 AL 244 10.8
Show 17085-3639 EGN 20 AM 34 20.2
Show 17100-3641 BRT1710 358 5.1 18
Show 17058-3633 TDS 853 136 1.8 34
Show 17064-3706 TOK 310 213 97.2 38
Show 17094-3716 HDS2423 151 0.2 39
Show 17063-3714 HDO 266 AB 79 5.8 44
Show 17063-3714 HDO 266 AC 186 40.5 44
Show 17063-3714 KOU 73 AD 135 12.7 44
Show 17063-3714 HDO 266 AE 32 53.8 44
Show 17051-3702 WFC 185 317 9.7 48
Show 17068-3553 B 895 AB 299 1.0 51
Show 17068-3553 HWE 85 AB,C 23 5.2 51
Show 17044-3631 B 889 252 0.5 51
Show 17080-3733 JSP 707 317 0.8 55
Show 17058-3554 TDT 210 7 0.6 56
Show 17131-3651 B 901 297 2.9 57
Show 17096-3738 TDT 238 144 1.4 61
Show 17132-3714 B 2827 150 4.5 66
Show 17029-3652 DAW 20 240 1.3 70
Show 17128-3728 B 899 330 1.8 71
Show 17055-3743 JSP 706 337 2.0 75
Show 17091-3753 B 896 87 4.7 75
Show 17084-3754 RST3070 172 0.4 76
Show 17065-3527 B 894 AB 357 2.6 76
Show 17065-3527 SNA 63 AC 232 6.7 76
Show 17136-3729 TDS 858 70 1.4 79
Show 17025-3603 HJ 4910 81 8.4 82
Show 17137-3738 RST3969 292 0.2 87
Show 17048-3753 HJ 4915 336 11.2 88
Show 17076-3512 B 2403 AB 169 6.3 88
Show 17076-3512 SIN 125 AC 9 24.1 88
Show 17128-3751 TDT 264 205 1.0 89
Show 17048-3757 B 892 311 0.3 91
Show 17046-3758 TDT 200 243 0.5 93
Show 17046-3800 B 890 356 6.0 95
Show 17139-3748 B 902 71 1.6 95
Show 17048-3806 B 891 AB 243 5.6 98
Show 17048-3806 B 891 AC 80 6.4 98
Show 17082-3500 SNA 64 52 1.9 99
Show 17006-3607 B 887 90 0.6 101

 
 
WDS 17085-3639 : COMPONENTS
 
 
  A B C D E F G H I J K L
B pa=75.4°
sep=0.80"
 
C pa=145.6°
sep=3.12"
pa=160.3°
sep=2.94"
 
D pa=117.9°
sep=3.57"
pa=128.1°
sep=3.03"
pa=57.1°
sep=1.66"
 
E pa=358.7°
sep=4.81"
pa=349.2°
sep=4.69"
pa=345.8°
sep=7.61"
pa=333.3°
sep=7.25"
 
F pa=50.6°
sep=4.31"
pa=45.3°
sep=3.60"
pa=16.5°
sep=5.53"
pa=2.3°
sep=4.41"
pa=121.1°
sep=4.01"
 
G pa=232.3°
sep=5.15"
pa=235.3°
sep=5.89"
pa=264.3°
sep=5.87"
pa=258.4°
sep=7.38"
pa=206.5°
sep=8.89"
pa=231.5°
sep=9.46"
 
H pa=171.1°
sep=6.31"
pa=178.1°
sep=6.44"
pa=192.0°
sep=3.74"
pa=205.5°
sep=5.05"
pa=174.4°
sep=11.09"
pa=194.7°
sep=9.27"
pa=121.3°
sep=5.92"
 
I pa=46.5°
sep=5.71"
pa=42.1°
sep=5.03"
pa=20.1°
sep=6.93"
pa=10.0°
sep=5.69"
pa=101.6°
sep=4.34"
pa=34.2°
sep=1.45"
pa=49.2°
sep=10.85"
pa=17.3°
sep=10.64"
 
J pa=117.2°
sep=5.61"
pa=123.2°
sep=5.05"
pa=89.9°
sep=3.23"
pa=116.0°
sep=2.05"
pa=145.3°
sep=8.96"
pa=162.6°
sep=5.56"
pa=86.3°
sep=9.09"
pa=47.6°
sep=5.43"
pa=172.5°
sep=6.55"
 
K pa=113.0°
sep=8.24"
pa=116.6°
sep=7.63"
pa=96.4°
sep=5.86"
pa=109.3°
sep=4.70"
pa=136.2°
sep=11.12"
pa=144.4°
sep=7.32"
pa=90.3°
sep=11.67"
pa=65.5°
sep=7.26"
pa=154.3°
sep=7.94"
pa=104.2°
sep=2.68"
 
L pa=238.7°
sep=9.13"
pa=240.0°
sep=9.90"
pa=257.2°
sep=9.81"
pa=254.3°
sep=11.38"
pa=218.9°
sep=12.27"
pa=236.1°
sep=13.41"
pa=246.9°
sep=4.05"
pa=279.6°
sep=8.91"
pa=234.0°
sep=14.76"
pa=260.3°
sep=12.98"
pa=264.3°
sep=15.47"
 
M pa=28.1°
sep=19.03"
pa=26.2°
sep=18.50"
pa=20.4°
sep=20.66"
pa=17.4°
sep=19.35"
pa=37.1°
sep=15.03"
pa=21.8°
sep=15.14"
pa=33.2°
sep=23.82"
pa=19.1°
sep=24.37"
pa=20.5°
sep=13.73"
pa=11.6°
sep=19.76"
pa=3.9°
sep=20.06"
pa=37.9°
sep=27.29"
 
 
17085-3639 A
 
 
Name HD 154682 Coord arcsec 2000 170832.74-363834.2 Mag 6.29 Spectral class G5V (yellow)
PmRA 45.00 PmDE -85.0 SAO 208457 HIP 83874
Tycho2 7373-01297-1 HD 154682 GC 23113 CD CD-3611257
CP CP-36 7166
Tycho2
Tycho2 7373-01297-1 Pflag RAmdeg 257.13654060 DEmdeg -36.64303302
PmRA 43.2 PmDE -83.1 E RAmdeg 5 E DEmdeg 7
E pmRA 1.1 E pmDE 1.2 EpRAm 1991.10 EpDEm 1990.10
Num 14 Q RAmdeg 0.8 Q DEmdeg 0.7 Q pmRA 0.7
Q pmDE 0.7 BTmag 8.438 E BTmag 0.017 VTmag 7.749
E VTmag 0.012 Prox 983 TYC T HIP 83874
CCDM RAdeg 257.13641667 DEdeg -36.64282694 EpRA 1990 1.70
EpDE 1990 1.06 E RAdeg 4.9 E DEdeg 6.9 Posflg
Corr 0.2
SAO
SAO 208457 DelFlag RA1950 PmRA1950 0.0038
DE1950 PmDE1950 -0.072 Vmag 7.9 SpType G0
Double code Source 70 CatNum 23113 DM CD-3611257
DMcomp BDsup HD 154682 M HD 0
GC 23113 RA1950rad 4.47317009 DE1950rad -0.63840139 PmRA2000 0.0038
PmDE2000 -0.071
Hipparcos
Catalog H HIP 83874 Proxy RAhms 17 08 32.74
DEdms -36 38 34.2 Vmag 7.68 VarFlag R Vmag H
RAdeg 257.136 DEdeg -36.6428 AstroRef Plx 21.84
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 154682 BD
CD CD-3611257 CP CP-36 7166 Dm number -3611257 VIred 0.69
SpType G5V R SpType Coord arcsec 2000 170832.74-363834.2
Hipparcos 2
HIP 83874 Sn 5 So 0 Nc 1
RArad 4.487876924 DErad -0.6395380403 Plx 21.16 PmRA 45.17
PmDE -83.86 E RArad 0.73 E DErad 0.54 E Plx 0.78
E pmRA 1.06 E pmDE 0.63 Hpmag 7.8111 E Hpmag 0.0011
SHp 0.009 VA 0 BV 0.617 E BV 0.015
VI 0.69
 
 
17085-3639 B
 
 
Coord arcsec 2000 170832.80-363834.0 Mag 10.3 Spectral class M3V (red) Calc delta mag 4.01
Calc coord yes
 
 
17085-3639 C
 
 
Coord arcsec 2000 170832.89-363836.8 Mag 13.9 Calc delta mag 7.61 Calc coord yes
 
 
17085-3639 D
 
 
Coord arcsec 2000 170833.00-363835.9 Mag 15.9 Calc delta mag 9.61 Calc coord yes
 
 
17085-3639 E
 
 
Coord arcsec 2000 170832.73-363829.4 Mag 13 Calc delta mag 6.71 Calc coord yes
 
 
17085-3639 F
 
 
Coord arcsec 2000 170833.02-363831.5 Mag 13.8 Calc delta mag 7.51 Calc coord yes
 
 
17085-3639 G
 
 
Coord arcsec 2000 170832.40-363837.4 Mag 15 Calc delta mag 8.71 Calc coord yes
 
 
17085-3639 H
 
 
Coord arcsec 2000 170832.82-363840.4 Mag 16.2 Calc delta mag 9.91 Calc coord yes
 
 
17085-3639 I
 
 
Coord arcsec 2000 170833.08-363830.3 Mag 15.8 Calc delta mag 9.51 Calc coord yes
 
 
17085-3639 J
 
 
Coord arcsec 2000 170833.15-363836.8 Mag 15.1 Calc delta mag 8.81 Calc coord yes
 
 
17085-3639 K
 
 
Coord arcsec 2000 170833.37-363837.4 Mag 16.1 Calc delta mag 9.81 Calc coord yes
 
 
17085-3639 L
 
 
Coord arcsec 2000 170832.09-363838.9 Mag 11.98 Calc delta mag 5.69 Calc coord yes
 
 
17085-3639 M
 
 
Coord arcsec 2000 170833.48-363817.4 Mag 13.9 PmRA 6.00 PmDE 5.0
Calc delta mag 7.61 Calc coord yes