03217+0845 STF 380 (HD 20837)
03h 21m 43.84s +08° 45' 23.5" P.A. 4.00 sep 0.9 mag 9.02,9.81 Sp G0
Coord 2000 |
03217+0845 |
|
Discov num |
STF 380 |
|
Comp |
|
|
Coord arcsec 2000 |
03 21 43.84 +08 45 23.5 |
|
Date first |
1829 |
|
Date last |
2018 |
|
Obs |
92 |
|
Pa first |
90 |
|
Pa last |
4 |
|
P.A. Now (θ) |
4° |
|
Sep first |
1.5 |
|
Sep last |
0.888 |
|
Sep. Now (ρ) |
0.888" |
|
Mag pri |
9.02 |
|
Mag sec |
9.81 |
|
delta mag (ΔM) |
0.79 |
|
Spectral class |
G0 (yellow) |
|
Pri motion ra |
-027 |
|
Sec motion ra |
-027 |
|
Pri motion dec |
-098 |
|
Sec motion dec |
-098 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 20837 |
|
Constellation |
Cetus |
|
SAO |
111150 |
|
Tycho2 |
0649-00737-1 |
|
Gaia DR2 |
11143687789164544 |
|
HD |
20837 |
|
GC |
4015 |
|
ADS |
2491 |
|
ORBITAL ELEMENTS
Period (P) | 663.5558y | ± 324.0899 |
Periastron (T) | 1786.8967y | ± 49.1078 |
Semi-major axis (a) | 1.47962a | ± 0.40496 |
Eccentricity (e) | 0.35215 | ± 0.23884 |
Inclination (i) | 119.531° | ± 9.369 |
Longitude of periastron (ω) | 293.683° | ± 36.696 |
Node (Ω) | 83.256° | ± 14.967 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
15.6 |
0.951 |
2001 |
15.0 |
0.949 |
2002 |
14.3 |
0.948 |
2003 |
13.7 |
0.947 |
2004 |
13.1 |
0.945 |
2005 |
12.5 |
0.944 |
2006 |
11.9 |
0.943 |
2007 |
11.3 |
0.942 |
2008 |
10.7 |
0.941 |
2009 |
10.0 |
0.940 |
2010 |
9.4 |
0.940 |
2011 |
8.8 |
0.939 |
2012 |
8.2 |
0.938 |
2013 |
7.6 |
0.938 |
2014 |
6.9 |
0.937 |
2015 |
6.3 |
0.937 |
2016 |
5.7 |
0.936 |
2017 |
5.1 |
0.936 |
2018 |
4.4 |
0.936 |
2019 |
3.8 |
0.935 |
2020 |
3.2 |
0.935 |
2021 |
2.5 |
0.935 |
2022 |
1.9 |
0.935 |
2023 |
1.3 |
0.935 |
2024 |
0.7 |
0.936 |
2025 |
|
0.936 |
2026 |
359.4 |
0.936 |
2027 |
358.8 |
0.936 |
2028 |
358.2 |
0.937 |
2029 |
357.5 |
0.937 |
2030 |
356.9 |
0.938 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 03217+0845 STF 380 (HD 20837) : NOTES
discov_num |
notes |
refcode |
STF 380 |
A premature orbit has been calculated. |
|
REFERENCES
refcode |
metd |
author |
reference |
Izm2019 |
orb u |
Izmailov, I.S. |
2019AstL...45...30I |
Izm2019 |
|
Ast. Lett. 45, 30, 2019 |
|
Izm2019 |
|
(Orbital elements from weighted solutions used when available (Table 2), |
|
Izm2019 |
|
unweighted elements (Table 1) used for remaining 29 systems.) |
|
DISCOVERER
idgroup |
discov |
author |
1 |
STF |
Struve, F.G.W. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
03217+0845 |
STF 380 |
|
2006 |
84 |
11 |
0.9 |
9.02 |
9.81 |
G0 |
NO |
032143.84+084523.5 |
03217+0845 |
STF 380 |
|
2008 |
85 |
10 |
1.0 |
9.02 |
9.81 |
G0 |
NO |
032143.84+084523.5 |
03217+0845 |
STF 380 |
|
2015 |
87 |
6 |
0.9 |
9.02 |
9.81 |
G0 |
NO |
032143.84+084523.5 |
03217+0845 |
STF 380 |
|
2016 |
88 |
7 |
0.9 |
9.02 |
9.81 |
G0 |
NO |
032143.84+084523.5 |
03217+0845 |
STF 380 |
|
2018 |
89 |
4 |
0.9 |
9.02 |
9.81 |
G0 |
NO |
032143.84+084523.5 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 03217+0845 STF 380 (HD 20837) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 03217+0845 STF 380 (HD 20837) : MEASURES
No records found.
WDS 03217+0845 (HD 20837) : 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 03217+0845 (HD 20837) : ALADIN DSS IMAGE @ 03h 21m 43.84s +08° 45' 23.5"
WDS 03217+0845 STF 380 (HD 20837) : 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 |
|
03217+0845 |
STF 380 |
|
4 |
0.9 |
1 |
Show |
|
03210+0827 |
PLQ 41 |
AB |
310 |
42.7 |
22 |
Show |
|
03210+0827 |
PLQ 41 |
AC |
8 |
50.8 |
22 |
Show |
|
03206+0902 |
GIC 40 |
|
84 |
81.8 |
24 |
Show |
|
03216+0821 |
LDS3482 |
|
249 |
17.3 |
25 |
Show |
|
03214+0803 |
J 304 |
|
84 |
4.5 |
41 |
Show |
|
03186+0827 |
LUH 6 |
BC |
48 |
71.2 |
50 |
Show |
|
03186+0827 |
SKF 482 |
AB |
353 |
5.1 |
50 |
Show |
|
03186+0827 |
LUH 6 |
AC |
45 |
74.8 |
50 |
Show |
|
03244+0810 |
LDS3489 |
|
55 |
80.6 |
54 |
Show |
|
03181+0803 |
HDS 414 |
AB |
310 |
0.9 |
69 |
Show |
|
03181+0803 |
TOK 475 |
AC |
298 |
528.9 |
69 |
Show |
|
03245+1003 |
UC 45 |
|
261 |
51.7 |
88 |
Show |
|
03273+0810 |
TDS2551 |
|
61 |
0.7 |
90 |
Show |
|
03174+0739 |
BU 1039 |
AB |
201 |
2.5 |
92 |
Show |
|
03174+0739 |
BU 1039 |
AC |
38 |
156.0 |
92 |
Show |
|
03233+0711 |
HEI 631 |
|
102 |
1.5 |
98 |
Show |
|
03272+0944 |
HDS 433 |
AB |
267 |
0.6 |
100 |
Show |
|
03272+0944 |
MKT 15 |
Aa,Ab |
337 |
0.0 |
100 |
Show |
|
03240+1028 |
LSC 25 |
|
284 |
0.6 |
108 |
Show |
|
03276+0954 |
J 305 |
|
113 |
0.9 |
112 |
Show |
|
03276+0956 |
CFN 3 |
|
297 |
1.5 |
113 |
Show |
|
03213+1038 |
HEI 449 |
|
53 |
0.3 |
113 |
Show |
|
03227+1037 |
GIC 41 |
AB |
9 |
170.1 |
114 |
Show |
|
03227+1037 |
GIC 41 |
AC |
312 |
213.1 |
114 |
Show |
|
03141+0832 |
GIC 38 |
|
19 |
28.2 |
114 |
Show |
|
03143+0911 |
A 828 |
|
204 |
1.2 |
114 |
Show |
|
03198+0655 |
LDS3477 |
|
74 |
21.9 |
114 |
Show |
|
03227+1037 |
GIC 41 |
BC |
263 |
186.7 |
116 |
Show |
|
03181+0629 |
TOK 474 |
|
189 |
999.9 |
147 |
Show |
|
03315+0750 |
CLZ 23 |
|
355 |
17.2 |
155 |
Show |
|
03112+0912 |
LEP 12 |
|
1 |
4.3 |
159 |
Show |
|
03318+0749 |
A 1931 |
|
47 |
0.8 |
160 |
Show |
|
03258+0616 |
SKF1685 |
|
6 |
1.8 |
162 |
Show |
|
03170+0618 |
CLZ 20 |
|
210 |
75.9 |
164 |
Show |
|
03201+1135 |
LDS3478 |
|
27 |
17.1 |
172 |
Show |
|
03280+1114 |
SKF1432 |
|
237 |
2.3 |
176 |
Show |
|
03337+0832 |
KPP3168 |
|
313 |
1.5 |
179 |
Show |
|
03264+1131 |
SKF1431 |
|
313 |
4.1 |
180 |
Show |
|
03183+0550 |
LAS 22 |
|
272 |
19.1 |
183 |
Show |
|
03257+0551 |
JNN 255 |
AB |
179 |
0.2 |
184 |
Show |
|
03257+0551 |
JNN 255 |
AC |
217 |
2.1 |
184 |
Show |
|
03112+0710 |
A 2031 |
|
249 |
1.4 |
184 |
Show |
|
03317+0656 |
SLW 157 |
|
261 |
13.1 |
184 |
Show |
|
03341+0901 |
KPP1669 |
|
237 |
12.9 |
185 |
Show |
|
03332+0727 |
SKF1142 |
|
145 |
7.4 |
188 |
Show |
|
03286+1123 |
BU 879 |
|
71 |
24.5 |
188 |
Show |
|
03161+1138 |
WIS 87 |
|
139 |
682.2 |
192 |
Show |
|
03148+1127 |
RAO 539 |
|
186 |
0.6 |
192 |
Show |
|
03171+1145 |
GRV 169 |
|
298 |
15.1 |
193 |
Show |
|
03250+0537 |
HEI 632 |
|
111 |
0.9 |
195 |
|
|
WDS 03217+0845 : COMPONENTS
03217+0845 A
Componente originario normalizzato |
AB |
|
Name |
HD 20837 |
|
Coord arcsec 2000 |
032143.84+084523.5 |
|
Mag |
9.02 |
|
Spectral class |
G0 (yellow) |
|
PmRA |
-27.00 |
|
PmDE |
-98.0 |
|
SAO |
111150 |
|
Tycho2 |
0649-00737-1 |
|
HD |
20837 |
|
GC |
4015 |
|
ADS |
2491 |
|
DM |
BD+08 500 |
|
Tycho2 |
0649-00737-1 |
|
Pflag |
P |
|
RAmdeg |
50.43266415 |
|
DEmdeg |
8.75652838 |
|
PmRA |
-27.3 |
|
PmDE |
-97.6 |
|
E RAmdeg |
12 |
|
E DEmdeg |
14 |
|
E pmRA |
2.0 |
|
E pmDE |
1.9 |
|
EpRAm |
1991.19 |
|
EpDEm |
1990.81 |
|
Num |
5 |
|
Q RAmdeg |
0.5 |
|
Q DEmdeg |
0.5 |
|
Q pmRA |
0.4 |
|
Q pmDE |
0.5 |
|
BTmag |
9.717 |
|
E BTmag |
0.026 |
|
VTmag |
9.023 |
|
E VTmag |
0.019 |
|
Prox |
9 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
50.43270528 |
|
DEdeg |
8.75670667 |
|
EpRA 1990 |
1.72 |
|
EpDE 1990 |
1.60 |
|
E RAdeg |
11.5 |
|
E DEdeg |
13.9 |
|
Posflg |
D |
|
Corr |
-0.2 |
|
SAO |
111150 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0017 |
|
DE1950 |
|
|
PmDE1950 |
-0.133 |
|
Vmag |
8.3 |
|
SpType |
G0 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
4015 |
|
DM |
BD+08 500 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
20837 |
|
M HD |
0 |
|
GC |
4015 |
|
RA1950rad |
0.8684703 |
|
DE1950rad |
0.1497241 |
|
PmRA2000 |
-0.0016 |
|
PmDE2000 |
-0.137 |
|
Ccdm |
03217+0845 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
1.88 |
|
DDEs |
23.4 |
|
R dRAs |
12 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
2 |
|
Vmag |
8.7 |
|
Sp |
G0 |
|
PmNote |
|
|
PmRA |
-22 |
|
PmDE |
36 |
|
Dm number |
+08 500 |
|
Cat1 |
BD |
|
Name2 |
+08 351 |
|
Cat2 |
AGK2/3 |
|
HD |
20837 |
|
M HD |
|
|
ADS BDS |
A 2491 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03164N0824A |
|
HIC |
|
|
03217+0845 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
032143.84+084524.4 |
|
Mag |
9.81 |
|
PmRA |
-27.00 |
|
PmDE |
-98.0 |
|
Tycho2 |
0649-00737-2 |
|
Calc delta mag |
0.79 |
|
Calc coord |
yes |
|
Tycho2 |
0649-00737-2 |
|
Pflag |
P |
|
RAmdeg |
50.43266415 |
|
DEmdeg |
8.75652838 |
|
PmRA |
-27.3 |
|
PmDE |
-97.6 |
|
E RAmdeg |
12 |
|
E DEmdeg |
14 |
|
E pmRA |
2.0 |
|
E pmDE |
1.9 |
|
EpRAm |
1991.19 |
|
EpDEm |
1990.81 |
|
Num |
5 |
|
Q RAmdeg |
0.5 |
|
Q DEmdeg |
0.5 |
|
Q pmRA |
0.4 |
|
Q pmDE |
0.5 |
|
BTmag |
10.663 |
|
E BTmag |
0.049 |
|
VTmag |
9.807 |
|
E VTmag |
0.033 |
|
Prox |
9 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
50.43281000 |
|
DEdeg |
8.75694056 |
|
EpRA 1990 |
1.73 |
|
EpDE 1990 |
1.60 |
|
E RAdeg |
22.0 |
|
E DEdeg |
27.5 |
|
Posflg |
D |
|
Corr |
-0.2 |
|
Ccdm |
03217+0845 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
STF 380 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1959 |
|
Theta |
036 |
|
Rho |
1.1 |
|
Obs |
99 |
|
Vmag |
9.7 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A 2491 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03164N0824B |
|
HIC |
|
|