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Doubles in session


Current system
03129-6819
DON 50
HD 20416


Nearby doubles
22' : 03105-6836
EGG 6

28' : 03152-6755
DAM 784

36' : 03085-6846
UC 956

46' : 03211-6817
KPP3520

51' : 03147-6730
R 21

59' : 03111-6917
DAM 783

67' : 03255-6809
LDS 97

68' : 03249-6823
LDS 96

73' : 03154-6930
R 22

75' : 03228-6730
KPP2033

89' : 03180-6656
EHR 3

95' : 02558-6817
SKF1521

102' : 03010-6703
KPP2789

103' : 03185-6957
R 29

105' : 02554-6744
TDS2388

107' : 02555-6908
HJ 3547

114' : 03154-7015
HLN 4

119' : 03138-7018
R 23

122' : 03325-6728
TDS2570

133' : 03178-7029
R 28

134' : 03261-6629
TRR 1

135' : 03221-7022
HEI 628

138' : 03084-7033
HLN 19

139' : 03034-7029
HJ 3552

145' : 03092-7042
B 2081

150' : 03137-6550
HJ 3566



Selections
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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.

03129-6819 DON 50 (HD 20416)

 
 
03h 12m 51.70s -68° 19' 07.2" P.A. 72.00 sep 5.4 mag 9.20,12.20 Sp F6V
 
 
Coord 2000 03129-6819 Discov num DON  50 Comp Coord arcsec 2000 03 12 51.70 -68 19 07.2
Date first 1929 Date last 2016 Obs 5
Pa first 36 Pa last 71.5 P.A. Now (θ) 71.5°
Sep first 0.9 Sep last 5.429 Sep. Now (ρ) 5.429"
Mag pri 9.20 Mag sec 12.20 delta mag (ΔM) 3 Spectral class F6V (yellow-white)
Pri motion ra +046 Sec motion ra +050
Pri motion dec +033 Sec motion dec +037
Notes T (Parallax indicates physical)
rPM=0.091 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 20416 Constellation Hydrus SAO 248756 Tycho2 9152-01872-1
HD 20416
 
 
WDS 03129-6819 DON 50 (HD 20416) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Don1937 Ma j Donner, H.F. 1937MmRAS..65...51R
Don1937 MemRAS 65, 51, 1937
Don1955 Ma - Donner, H.F. 1955POMic..11....1R
Don1955 Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964 Ma j Donner, H.F. 1964POMic...9...73R
Don1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03129-6819 DON 50 1929 1 36 0.9 9.20 12.20 F6V 031251.70-681907.2
03129-6819 DON 50 2016 2 72 5.4 9.20 12.20 F6V T 031251.70-681907.2

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

 
 
WDS 03129-6819 DON 50 (HD 20416) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03129-6819 DON 50 (HD 20416) : MEASURES
 
 
No records found.

 
 
WDS 03129-6819 (HD 20416) : VIRTUAL EYEPIECE
 
 

03129-6819 DON 50A mag 9.2 Sp F6V 03129-6819 DON 50B sep 2.6 P.A. 47.80 mag 12.2 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 03129-6819 (HD 20416) : ALADIN DSS IMAGE @ 03h 12m 51.70s -68° 19' 07.2"
 
 
 
 
WDS 03129-6819 DON 50 (HD 20416) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03129-6819 DON 50 distance=0' 03105-6836 EGG 6 distance=22' 03152-6755 DAM 784 distance=28' 03085-6846 UC 956 distance=36' 03211-6817 KPP3520 distance=46' 03147-6730 R 21 distance=51' 03111-6917 DAM 783 distance=59' 03255-6809 LDS 97 distance=67' 03249-6823 LDS 96 distance=68' 03154-6930 R 22 distance=73' 03228-6730 KPP2033 distance=75' 03180-6656 EHR 3 distance=89' 02558-6817 SKF1521 distance=95' 03010-6703 KPP2789 distance=102' 03185-6957 R 29 distance=103' 02554-6744 TDS2388 distance=105' 02555-6908 HJ 3547 distance=107' 03154-7015 HLN 4 distance=114' 03138-7018 R 23 distance=119' 03325-6728 TDS2570 distance=122' 03178-7029 R 28 distance=133' 03261-6629 TRR 1 distance=134' 03221-7022 HEI 628 distance=135' 03084-7033 HLN 19 distance=138' 03034-7029 HJ 3552 distance=139' 03092-7042 B 2081 distance=145' 03137-6550 HJ 3566 distance=150' 03302-7024 B 2084AB distance=155' 03302-7024 TOI 487AC distance=155' 03221-7048 HEI 629 distance=157' 03230-7047 HEI 630AB distance=158' 03230-7047 HEI 630BC distance=158' 02543-6620 UC 847 distance=161' 03225-6547 HDS 421 distance=163' 02582-7046 TOI 188 distance=166' 03126-6522 HDS 412 distance=178' 03322-7047 KPP3533 distance=179' 03155-6520 R 20AB distance=180' 03155-6520 DAM 785AC distance=180' 02556-7108 UC 872 distance=192' 03188-7129 HEI 627 distance=193' 03249-6451 UC 1001 distance=221' 03316-7139 TDS2561 distance=222' 03023-7154 FIN 360 distance=222' 03152-6427 RST 67BC distance=233' 03152-6427 DUN 12A,BC distance=233' 02540-6454 TOK 470 distance=234' 03044-7209 UC 940 distance=234' 03121-6420 HJ 3562 distance=240' 02549-6426 UC 860 distance=257' 02595-6415 TOK 818 distance=258' 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 03129-6819 DON 50 72 5.4
Show 03105-6836 EGG 6 314 13.5 22
Show 03152-6755 DAM 784 286 6.4 28
Show 03085-6846 UC 956 246 23.2 36
Show 03211-6817 KPP3520 166 2.0 46
Show 03147-6730 R 21 307 37.1 51
Show 03111-6917 DAM 783 333 14.6 59
Show 03255-6809 LDS 97 46 282.8 67
Show 03249-6823 LDS 96 318 664.8 68
Show 03154-6930 R 22 260 16.1 73
Show 03228-6730 KPP2033 82 16.2 75
Show 03180-6656 EHR 3 17 5.0 89
Show 02558-6817 SKF1521 237 14.8 95
Show 03010-6703 KPP2789 26 1.7 102
Show 03185-6957 R 29 230 68.5 103
Show 02554-6744 TDS2388 108 0.4 105
Show 02555-6908 HJ 3547 197 20.8 107
Show 03154-7015 HLN 4 336 8.3 114
Show 03138-7018 R 23 156 34.8 119
Show 03325-6728 TDS2570 148 7.3 122
Show 03178-7029 R 28 252 23.8 133
Show 03261-6629 TRR 1 107 16.0 134
Show 03221-7022 HEI 628 311 1.1 135
Show 03084-7033 HLN 19 66 8.0 138
Show 03034-7029 HJ 3552 1 15.6 139
Show 03092-7042 B 2081 145 0.7 145
Show 03137-6550 HJ 3566 38 13.4 150
Show 03302-7024 B 2084 AB 201 0.5 155
Show 03302-7024 TOI 487 AC 130 3.0 155
Show 03221-7048 HEI 629 247 2.2 157
Show 03230-7047 HEI 630 AB 117 2.1 158
Show 03230-7047 HEI 630 BC 260 0.1 158
Show 02543-6620 UC 847 61 19.6 161
Show 03225-6547 HDS 421 34 0.3 163
Show 02582-7046 TOI 188 6 1.3 166
Show 03126-6522 HDS 412 155 0.1 178
Show 03322-7047 KPP3533 70 2.1 179
Show 03155-6520 R 20 AB 117 49.1 180
Show 03155-6520 DAM 785 AC 82 40.7 180
Show 02556-7108 UC 872 244 18.9 192
Show 03188-7129 HEI 627 204 0.4 193
Show 03249-6451 UC 1001 251 48.1 221
Show 03316-7139 TDS2561 86 2.4 222
Show 03023-7154 FIN 360 179 0.1 222
Show 03152-6427 RST 67 BC 25 0.7 233
Show 03152-6427 DUN 12 A,BC 105 19.2 233
Show 02540-6454 TOK 470 52 999.9 234
Show 03044-7209 UC 940 219 20.2 234
Show 03121-6420 HJ 3562 331 34.4 240
Show 02549-6426 UC 860 340 46.8 257
Show 02595-6415 TOK 818 245 0.5 258

 
 
WDS 03129-6819 : COMPONENTS
 
 
  A
B pa=47.8°
sep=2.57"
 
 
03129-6819 A
 
 
Componente originario normalizzato AB Name HD 20416 Coord arcsec 2000 031251.70-681907.2 Mag 9.2
Spectral class F6V (yellow-white) PmRA 46.00 PmDE 33.0 SAO 248756
Tycho2 9152-01872-1 HD 20416 DM CP-68 198
Tycho2
Tycho2 9152-01872-1 Pflag RAmdeg 48.21545652 DEmdeg -68.31867603
PmRA 50.7 PmDE 35.8 E RAmdeg 9 E DEmdeg 10
E pmRA 1.6 E pmDE 1.5 EpRAm 1990.90 EpDEm 1990.47
Num 8 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.8
Q pmDE 0.8 BTmag 9.596 E BTmag 0.021 VTmag 9.089
E VTmag 0.017 Prox 999 TYC T HIP
CCDM RAdeg 48.21514056 DEdeg -68.31875861 EpRA 1990 1.73
EpDE 1990 1.74 E RAdeg 9.4 E DEdeg 9.5 Posflg
Corr 0.2
SAO
SAO 248756 DelFlag RA1950 PmRA1950 0.0028
DE1950 PmDE1950 0.003 Vmag 8.8 SpType F8
Double code Source 61 CatNum 688 DM CP-68 198
DMcomp BDsup HD 20416 M HD 0
GC RA1950rad 0.83942185 DE1950rad -1.19564694 PmRA2000 0.0022
PmDE2000 0.001
 
 
03129-6819 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 031252.04-681905.5 Mag 12.2 PmRA 50.00
PmDE 37.0 Calc delta mag 3 Calc coord yes