stampa
Login

A workbench to forge your own double stars?
Create your account here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
17506-4019
EGN 21 AC


Nearby doubles
15' : 17502-4005
HDO 279

30' : 17515-4046
HDO 281

30' : 17501-4048
BRT1000

33' : 17480-4008
I 108

37' : 17492-4052
TDS 885

37' : 17476-4008
SEE 338

41' : 17474-4035
CPO 553

42' : 17531-4049
RST1996

42' : 17542-4025
SKF1419

44' : 17537-3953
RST1998

51' : 17474-4053
I 613

56' : 17463-4044
TOK 794

66' : 17452-3958
WG 214

69' : 17484-3915
I 1338

70' : 17468-4112
KPP1691

70' : 17552-3934
BVD 152

72' : 17504-4131
RSS 464

74' : 17553-4110
TDT 573

74' : 17488-4130
I 1339

75' : 17570-4007
RST2007

75' : 17568-3956
COO 222AB

81' : 17504-4139
SEE 341

81' : 17519-3900
TDT 540

82' : 17464-4124
BRT 993

85' : 17471-4133
BRT 995

87' : 17433-4041
RST1981



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.

17506-4019 EGN 21 AC

 
 
17h 50m 38.34s -40° 19' 05.8" P.A. 229.00 sep 5.0 mag 9.10, Sp K3V dist. 29.43 pc (96 l.y.)
 
 
Coord 2000 17506-4019 Discov num EGN  21 Comp AC Coord arcsec 2000 17 50 38.34 -40 19 05.8
Date first 2003 Date last 2005 Obs 5
Pa first 228 Pa last 229 P.A. Now (θ) 229°
Sep first 5.0 Sep last 4.99 Sep. Now (ρ) 4.99"
Mag pri 9.10 Mag sec delta mag (ΔM) Spectral class K3V (yellow-orange)
Pri motion ra +021 Sec motion ra
Pri motion dec -025 Sec motion dec
Notes N K (See Notes, 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
Nature of this double is uncertain.
 
 
17506-4019 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 162020 17 50 38 -40 19 06 EGN 21 AB 2021 6 24 1.0 9.10
Show 17 50 38 -40 19 06 EGN 21 AC 2005 5 229 5.0 9.10 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Scorpius HIP 87330 Tycho2 7890-01378-1 Gaia DR2 5957920668132624256
HD 162020 CD CD-4011894 CP CP-40 8144 Distance 29.43
Distance ly 96
 
 
WDS 17506-4019 EGN 21 AC : NOTES
 
 
discov_num notes refcode
EGN 21 AB pair unbound, but bound/unbound nature of AC pair inconclusive.
Primary is planet host star. Egn2007
HD 162020 Chauvin et al. (2006) note finding at least one faint companion Cvn2006
candidate within separation/magnitude range listed. However, further
observations are required for verification.
 
 
REFERENCES
 
 
refcode metd author reference
Cvn2006 A j Chauvin, G., Lagrange, A.-M., Udry, S., Fusco, T., Galland, F., Naef, D., Beuzit, 2006A&A...456.1165C
Cvn2006 +Ao J.-L., & Mayor, M.
Cvn2006 A&A 456, 1165, 2006
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
17506-4019 EGN 21 AC 2005 5 229 5.0 9.10   K3V N D 175038.34-401905.8

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

 
 
WDS 17506-4019 EGN 21 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17506-4019 EGN 21 AC : MEASURES
 
 
No records found.

 
 
WDS 17506-4019 : VIRTUAL EYEPIECE
 
 

17506-4019 EGN 21A mag 9.1 Sp K3V 17506-4019 EGN 21B sep 1.0 P.A. 18.30 17506-4019 EGN 21C sep 4.3 P.A. 221.30 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 17506-4019 : ALADIN DSS IMAGE @ 17h 50m 38.34s -40° 19' 05.8"
 
 
 
 
WDS 17506-4019 EGN 21 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17506-4019 EGN 21AC distance=0' 17502-4005 HDO 279 distance=15' 17515-4046 HDO 281 distance=30' 17501-4048 BRT1000 distance=30' 17480-4008 I 108 distance=33' 17492-4052 TDS 885 distance=37' 17476-4008 SEE 338 distance=37' 17474-4035 CPO 553 distance=41' 17531-4049 RST1996 distance=42' 17542-4025 SKF1419 distance=42' 17537-3953 RST1998 distance=44' 17474-4053 I 613 distance=51' 17463-4044 TOK 794 distance=56' 17452-3958 WG 214 distance=66' 17484-3915 I 1338 distance=69' 17468-4112 KPP1691 distance=70' 17552-3934 BVD 152 distance=70' 17504-4131 RSS 464 distance=72' 17553-4110 TDT 573 distance=74' 17488-4130 I 1339 distance=74' 17570-4007 RST2007 distance=75' 17568-3956 COO 222AB distance=75' 17568-3956 COO 222AC distance=75' 17504-4139 SEE 341 distance=81' 17519-3900 TDT 540 distance=81' 17464-4124 BRT 993 distance=82' 17471-4133 BRT 995 distance=85' 17433-4041 RST1981 distance=87' 17584-4009 WG 219AB distance=90' 17584-4009 SIN 105AC distance=90' 17539-3857 RST1999 distance=91' 17574-3926 WG 218 distance=95' 17429-3942 RST1980 distance=97' 17586-4059 SKF1926 distance=100' 17425-3945 TDT 472 distance=100' 17540-4151 VOU 74 distance=100' 17543-4150 VOU 75 distance=101' 17594-4014 TDT 615 distance=101' 17547-4152 VOU 76 distance=102' 17437-3916 RST1983 distance=102' 17440-3913 VVV 46 distance=102' 17434-4119 TDT 477 distance=102' 17458-4147 BRT 992 distance=104' 17432-4119 RST5441 distance=104' 17594-3955 TDT 614 distance=104' 17529-4200 NSN 380 distance=104' 17554-3851 I 1345 distance=105' 17596-4044 I 1348 distance=105' 17599-4010 WFC 283 distance=107' 17558-4148 VOU 79 distance=107' 17436-4135 CPO 549 distance=111' 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 17506-4019 EGN 21 AB 24 1.0
Show 17506-4019 EGN 21 AC 229 5.0
Show 17502-4005 HDO 279 36 31.6 15
Show 17515-4046 HDO 281 181 21.6 30
Show 17501-4048 BRT1000 153 8.4 30
Show 17480-4008 I 108 256 4.9 33
Show 17492-4052 TDS 885 160 1.9 37
Show 17476-4008 SEE 338 94 37.9 37
Show 17474-4035 CPO 553 124 6.4 41
Show 17531-4049 RST1996 120 0.7 42
Show 17542-4025 SKF1419 50 29.4 42
Show 17537-3953 RST1998 248 5.1 44
Show 17474-4053 I 613 193 1.8 51
Show 17463-4044 TOK 794 30 0.3 56
Show 17452-3958 WG 214 38 3.3 66
Show 17484-3915 I 1338 93 3.2 69
Show 17468-4112 KPP1691 49 13.1 70
Show 17552-3934 BVD 152 148 50.6 70
Show 17504-4131 RSS 464 95 20.5 72
Show 17553-4110 TDT 573 201 2.6 74
Show 17488-4130 I 1339 100 0.4 74
Show 17570-4007 RST2007 296 1.4 75
Show 17568-3956 COO 222 AB 124 3.6 75
Show 17568-3956 COO 222 AC 27 73.3 75
Show 17504-4139 SEE 341 64 19.4 81
Show 17519-3900 TDT 540 53 0.5 81
Show 17464-4124 BRT 993 340 4.8 82
Show 17471-4133 BRT 995 79 5.7 85
Show 17433-4041 RST1981 38 0.8 87
Show 17584-4009 WG 219 AB 213 9.5 90
Show 17584-4009 SIN 105 AC 102 24.4 90
Show 17539-3857 RST1999 214 4.8 91
Show 17574-3926 WG 218 131 10.4 95
Show 17429-3942 RST1980 214 6.9 97
Show 17586-4059 SKF1926 242 2.4 100
Show 17425-3945 TDT 472 321 1.3 100
Show 17540-4151 VOU 74 62 12.7 100
Show 17543-4150 VOU 75 156 8.1 101
Show 17594-4014 TDT 615 247 0.4 101
Show 17547-4152 VOU 76 38 3.6 102
Show 17437-3916 RST1983 237 1.7 102
Show 17440-3913 VVV 46 29 23.5 102
Show 17434-4119 TDT 477 276 8.0 102
Show 17458-4147 BRT 992 215 6.6 104
Show 17432-4119 RST5441 13 0.1 104
Show 17594-3955 TDT 614 265 0.7 104
Show 17529-4200 NSN 380 347 6.8 104
Show 17554-3851 I 1345 186 0.4 105
Show 17596-4044 I 1348 59 3.4 105
Show 17599-4010 WFC 283 263 10.4 107
Show 17558-4148 VOU 79 154 4.7 107

 
 
WDS 17506-4019 : COMPONENTS
 
 
  A B
B pa=18.3°
sep=0.96"
 
C pa=221.3°
sep=4.35"
pa=217.2°
sep=5.25"
 
 
17506-4019 A
 
 
Name HD 162020 Coord arcsec 2000 175038.34-401905.8 Mag 9.1 Spectral class K3V (yellow-orange)
PmRA 21.00 PmDE -25.0 HIP 87330 Tycho2 7890-01378-1
HD 162020 CD CD-4011894 CP CP-40 8144
Tycho2
Tycho2 7890-01378-1 Pflag RAmdeg 267.65981195 DEmdeg -40.31834912
PmRA 20.8 PmDE -25.8 E RAmdeg 14 E DEmdeg 19
E pmRA 1.3 E pmDE 1.3 EpRAm 1988.15 EpDEm 1985.14
Num 6 Q RAmdeg 0.7 Q DEmdeg 0.7 Q pmRA 0.8
Q pmDE 0.7 BTmag 10.367 E BTmag 0.038 VTmag 9.227
E VTmag 0.022 Prox 897 TYC T HIP 87330
CCDM RAdeg 267.65974722 DEdeg -40.31828806 EpRA 1990 1.66
EpDE 1990 1.28 E RAdeg 15.4 E DEdeg 20.8 Posflg
Corr -0.2
Hipparcos
Catalog H HIP 87330 Proxy RAhms 17 50 38.34
DEdms -40 19 05.8 Vmag 9.1 VarFlag R Vmag H
RAdeg 267.66 DEdeg -40.3183 AstroRef Plx 31.99
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 162020 BD
CD CD-4011894 CP CP-40 8144 Dm number -4011894 VIred 0.95
SpType K2V: R SpType Coord arcsec 2000 175038.34-401905.8
Hipparcos 2
HIP 87330 Sn 5 So 0 Nc 1
RArad 4.6715440245 DErad -0.7036868684 Plx 33.98 PmRA 17.27
PmDE -26.84 E RArad 1.33 E DErad 0.94 E Plx 1.31
E pmRA 2.2 E pmDE 1.14 Hpmag 9.248 E Hpmag 0.0026
SHp 0.018 VA 0 BV 0.964 E BV 0.066
VI 1.01
 
 
17506-4019 B
 
 
Coord arcsec 2000 175038.37-401904.9 Calc delta mag 9.1 Calc coord yes
 
 
17506-4019 C
 
 
Coord arcsec 2000 175038.09-401909.1 Calc delta mag 9.1 Calc coord yes