17506-4019 EGN 21 AB (HD 162020)
17h 50m 38.34s -40° 19' 05.8" P.A. 24.00 sep 1.0 mag 9.10, Sp K3V dist. 29.43 pc (96 l.y.)
Coord 2000 |
17506-4019 |
|
Discov num |
EGN 21 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 50 38.34 -40 19 05.8 |
|
Date first |
2003 |
|
Date last |
2021 |
|
Obs |
6 |
|
Pa first |
183 |
|
Pa last |
23.5 |
|
P.A. Now (θ) |
23.5° |
|
Sep first |
1.4 |
|
Sep last |
0.992 |
|
Sep. Now (ρ) |
0.992" |
|
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
U
K
(See Notes, Proper motion indicates non-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 not physical.
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
Name |
HD 162020 |
|
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 AB (HD 162020) : 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 |
AB |
2005 |
5 |
185 |
1.3 |
9.10 |
|
K3V |
NUD |
175038.34-401905.8 |
17506-4019 |
EGN 21 |
AB |
2021 |
6 |
24 |
1.0 |
9.10 |
|
K3V |
NU K |
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 AB (HD 162020) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 17506-4019 EGN 21 AB (HD 162020) : MEASURES
No records found.
WDS 17506-4019 (HD 162020) : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 17506-4019 (HD 162020) : ALADIN DSS IMAGE @ 17h 50m 38.34s -40° 19' 05.8"
WDS 17506-4019 EGN 21 AB (HD 162020) : NEIGHBORHOODS
|
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 |
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 |
|
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 |
|
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 |
|