03187-2931 DAW 78 (HD 20668)
03h 18m 39.22s -29° 30' 51.9" P.A. 320.00 sep 0.0 mag 9.50,9.70 Sp F3V
Coord 2000 |
03187-2931 |
|
Discov num |
DAW 78 |
|
Comp |
|
|
Coord arcsec 2000 |
03 18 39.22 -29 30 51.9 |
|
Date first |
1920 |
|
Date last |
2021 |
|
Obs |
14 |
|
Pa first |
295 |
|
Pa last |
320.4 |
|
P.A. Now (θ) |
320.4° |
|
Sep first |
0.3 |
|
Sep last |
0.039 |
|
Sep. Now (ρ) |
0.039" |
|
Mag pri |
9.50 |
|
Mag sec |
9.70 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
F3V (yellow-white) |
|
Pri motion ra |
-007 |
|
Sec motion ra |
|
|
Pri motion dec |
+040 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 20668 |
|
Constellation |
Fornax |
|
SAO |
168455 |
|
Tycho2 |
6445-00718-1 |
|
Gaia DR2 |
5058565343965278720 |
|
HD |
20668 |
|
WDS 03187-2931 DAW 78 (HD 20668) : NOTES
No records found.
REFERENCES
refcode |
metd |
author |
reference |
Daw1918a |
Ma - |
Dawson, B.H. |
. |
Daw1918a |
|
Pub. La Plata Obs. 4, Pt.1, 1918 |
|
Daw1918b |
Ma - |
Dawson, B.H. (measure by Chaves, A.J.) |
. |
Daw1918b |
|
Pub. La Plata Obs. 4, Pt.1, 1918 |
|
Daw1919 |
orb - |
Dawson, B.H. |
1919AJ.....32..109D |
Daw1919 |
|
AJ 32, 109, 1919 |
|
Daw1920 |
orb - |
Dawson, B.H. |
1920AJ.....32..141D |
Daw1920 |
|
AJ 32, 141, 1920 |
|
Daw1920b |
orb - |
Dawson, B.H. |
1920AJ.....32..161D |
Daw1920b |
|
AJ 32, 161, 1920 |
|
Daw1922 |
Ma - |
Dawson, B.H. |
. |
Daw1922 |
|
Pub. La Plata Obs. 4, Pt.2, 1922 |
|
Daw1922b |
orb - |
Dawson, B.H. |
1922AJ.....34...17D |
Daw1922b |
|
AJ 34, 17, 1922 |
|
Daw1924a |
Ma - |
Dawson, B.H. |
1924AJ.....35..147D |
Daw1924a |
|
AJ 35, 147, 1924 (DAW 112 - 158; data also in Daw1937) |
|
Daw1924b |
orb - |
Dawson, B.H. |
1924AJ.....36...23D |
Daw1924b |
|
AJ 36, 23, 1924 |
|
Daw1926 |
orb - |
Dawson, B.H. |
1926AJ.....36..181D |
Daw1926 |
|
AJ 36, 181, 1926 |
|
Daw1927A |
Ma - |
Dawson, B.H. |
1927sdsc.book...... |
Daw1927A |
|
cited in SDS (Southern Double Star Cat.), 1927 |
|
Daw1933 |
orb - |
Dawson, B.H. |
1933AJ.....43...15D |
Daw1933 |
|
AJ 43, 15, 1933 |
|
Daw1937 |
Ma - |
Dawson, B.H. |
. |
Daw1937 |
|
Pub. La Plata Obs. 6, 85, 1937 |
|
Daw9999 |
Ma - |
Dawson, B.H. |
................... |
Daw9999 |
|
Unpublished, manuscript or reference not found. |
|
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
03187-2931 |
DAW 78 |
|
1990 |
11 |
300 |
0.3 |
9.50 |
9.70 |
F3V |
|
031839.22-293051.9 |
03187-2931 |
DAW 78 |
|
2016 |
12 |
307 |
0.1 |
9.50 |
9.70 |
F3V |
|
031839.22-293051.9 |
03187-2931 |
DAW 78 |
|
2019 |
12 |
132 |
0.1 |
9.50 |
9.70 |
F3V |
|
031839.22-293051.9 |
03187-2931 |
DAW 78 |
|
2020 |
13 |
134 |
0.1 |
9.50 |
9.70 |
F3V |
|
031839.22-293051.9 |
03187-2931 |
DAW 78 |
|
2021 |
14 |
320 |
0.0 |
9.50 |
9.70 |
F3V |
|
031839.22-293051.9 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 03187-2931 DAW 78 (HD 20668) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 03187-2931 DAW 78 (HD 20668) : MEASURES
No records found.
WDS 03187-2931 (HD 20668) : 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 03187-2931 (HD 20668) : ALADIN DSS IMAGE @ 03h 18m 39.22s -29° 30' 51.9"
WDS 03187-2931 DAW 78 (HD 20668) : 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 |
|
03187-2931 |
DAW 78 |
|
320 |
0.0 |
|
Show |
|
03214-2924 |
I 1145 |
|
67 |
1.6 |
37 |
Show |
|
03179-2855 |
RST1255 |
|
28 |
2.4 |
39 |
Show |
|
03201-2851 |
LDS 93 |
|
358 |
253.0 |
44 |
Show |
|
03199-3014 |
I 719 |
|
325 |
1.5 |
46 |
Show |
|
03160-2845 |
TDS2507 |
|
80 |
0.9 |
59 |
Show |
|
03140-2950 |
SKF1201 |
|
169 |
31.3 |
65 |
Show |
|
03226-3011 |
LDS3487 |
|
253 |
25.0 |
66 |
Show |
|
03195-2815 |
UC 981 |
|
248 |
20.2 |
77 |
Show |
|
03240-3014 |
TDS2538 |
|
|
0.5 |
82 |
Show |
|
03126-3000 |
SKF1827 |
|
6 |
3.0 |
84 |
Show |
|
03163-2811 |
RST 64 |
|
242 |
3.9 |
86 |
Show |
|
03252-2951 |
HDS 427 |
|
137 |
0.3 |
88 |
Show |
|
03124-3004 |
TDS2478 |
|
215 |
0.9 |
88 |
Show |
|
03121-2907 |
LDS5416 |
|
208 |
251.5 |
89 |
Show |
|
03195-3100 |
TSN 126 |
|
130 |
0.6 |
90 |
Show |
|
03129-3003 |
LDS 90 |
|
225 |
13.0 |
92 |
Show |
Dalim |
03121-2859 |
HJ 3555 |
|
301 |
5.4 |
92 |
Show |
|
03246-3021 |
TDS2541 |
|
1 |
0.4 |
93 |
Show |
|
03119-3017 |
SEE 22 |
|
335 |
1.4 |
100 |
Show |
|
03200-3109 |
B 48 |
|
85 |
2.1 |
100 |
Show |
|
03180-2746 |
TDS 110 |
|
108 |
1.0 |
106 |
Show |
|
03113-2841 |
LDS5415 |
|
119 |
89.1 |
109 |
Show |
|
03184-2734 |
BVD 33 |
|
301 |
24.6 |
117 |
Show |
|
03249-2806 |
LDS5424 |
|
211 |
21.2 |
118 |
Show |
|
03262-3037 |
B 2082 |
|
194 |
30.2 |
119 |
Show |
|
03114-3043 |
TDS2471 |
|
167 |
0.5 |
119 |
Show |
|
03267-2834 |
SEE 25 |
|
18 |
10.3 |
121 |
Show |
|
03276-3011 |
TDS2552 |
|
180 |
1.0 |
123 |
Show |
|
03171-3133 |
LDS3471 |
|
49 |
14.3 |
125 |
Show |
|
03094-3004 |
LDS3460 |
|
68 |
10.6 |
126 |
Show |
|
03263-3057 |
LDS5426 |
|
36 |
32.0 |
131 |
Show |
|
03143-3129 |
TDS2491 |
|
159 |
0.5 |
132 |
Show |
|
03227-2714 |
HDS 422 |
|
228 |
0.2 |
147 |
Show |
|
03300-2922 |
RST 75 |
|
61 |
1.7 |
149 |
Show |
|
03123-2727 |
LDS 88 |
|
57 |
12.5 |
150 |
Show |
|
03071-2900 |
UC 951 |
|
180 |
60.3 |
155 |
Show |
|
03248-2722 |
LDS 839 |
|
201 |
7.5 |
156 |
Show |
|
03309-2926 |
HDS 442 |
|
4 |
0.7 |
161 |
Show |
|
03079-2813 |
LDS 86 |
AB |
208 |
66.6 |
161 |
Show |
|
03079-2813 |
HDS3408 |
AC |
96 |
37.4 |
161 |
Show |
|
03116-2719 |
FAR 52 |
|
18 |
0.1 |
162 |
Show |
|
03135-3200 |
TOI 926 |
|
159 |
0.2 |
164 |
Show |
|
03311-2959 |
TDS2560 |
|
162 |
0.4 |
165 |
Show |
|
03238-3204 |
RSS 64 |
AB |
265 |
27.2 |
167 |
Show |
|
03243-2659 |
RST 72 |
|
60 |
1.1 |
170 |
Show |
|
03071-2816 |
LDS3455 |
|
281 |
252.7 |
171 |
Show |
|
03078-2750 |
VIG 3 |
|
29 |
6.1 |
175 |
Show |
|
03313-3031 |
RST2309 |
|
107 |
1.0 |
176 |
Show |
|
03103-3153 |
LDS5413 |
|
268 |
209.1 |
180 |
Show |
|
03093-2717 |
KPP2308 |
|
110 |
19.5 |
182 |
|
|
WDS 03187-2931 : COMPONENTS
03187-2931 A
Componente originario normalizzato |
AB |
|
Name |
HD 20668 |
|
Coord arcsec 2000 |
031839.22-293051.9 |
|
Mag |
9.5 |
|
Spectral class |
F3V (yellow-white) |
|
PmRA |
-7.00 |
|
PmDE |
40.0 |
|
SAO |
168455 |
|
Tycho2 |
6445-00718-1 |
|
HD |
20668 |
|
DM |
CD-29 1220 |
|
Tycho2 |
6445-00718-1 |
|
Pflag |
|
|
RAmdeg |
49.66345322 |
|
DEmdeg |
-29.51442305 |
|
PmRA |
-3.0 |
|
PmDE |
41.0 |
|
E RAmdeg |
8 |
|
E DEmdeg |
6 |
|
E pmRA |
1.4 |
|
E pmDE |
1.3 |
|
EpRAm |
1990.75 |
|
EpDEm |
1991.22 |
|
Num |
8 |
|
Q RAmdeg |
1.5 |
|
Q DEmdeg |
0.8 |
|
Q pmRA |
1.5 |
|
Q pmDE |
0.9 |
|
BTmag |
9.471 |
|
E BTmag |
0.017 |
|
VTmag |
8.998 |
|
E VTmag |
0.013 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
49.66346139 |
|
DEdeg |
-29.51451722 |
|
EpRA 1990 |
1.73 |
|
EpDE 1990 |
1.72 |
|
E RAdeg |
7.5 |
|
E DEdeg |
6.4 |
|
Posflg |
|
|
Corr |
0.1 |
|
SAO |
168455 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0002 |
|
DE1950 |
|
|
PmDE1950 |
0.051 |
|
Vmag |
8.7 |
|
SpType |
F5 |
|
Double code |
|
|
Source |
24 |
|
CatNum |
1278 |
|
DM |
CD-29 1220 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
20668 |
|
M HD |
0 |
|
GC |
|
|
RA1950rad |
0.85770811 |
|
DE1950rad |
-0.51829481 |
|
PmRA2000 |
0.0001 |
|
PmDE2000 |
0.048 |
|
Ccdm |
03187-2931 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
-2.74 |
|
DDEs |
8.9 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
2 |
|
Vmag |
9.5 |
|
Sp |
F5 |
|
PmNote |
* |
|
PmRA |
-3 |
|
PmDE |
51 |
|
Dm number |
-29 1220 |
|
Cat1 |
CD |
|
Name2 |
168455 |
|
Cat2 |
SAO |
|
HD |
20668 |
|
M HD |
|
|
ADS BDS |
A 2467 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03145S2953A |
|
HIC |
|
|
03187-2931 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
031839.22-293051.9 |
|
Mag |
9.7 |
|
Calc delta mag |
0.2 |
|
Calc coord |
yes |
|
Ccdm |
03187-2931 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
DAW 78 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1959 |
|
Theta |
120 |
|
Rho |
0.1 |
|
Obs |
7 |
|
Vmag |
9.7 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A 2467 |
|
M ADS BDS |
N |
|
N IDS |
|
|
IDS |
03145S2953B |
|
HIC |
|
|