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Current system
03316-1244
RST 3383
HD 21918


Nearby doubles
22' : 03304-1257
GWP 474

26' : 03325-1306
TDS2569

31' : 03334-1301
HU 207

35' : 03298-1307
RST3382

56' : 03343-1204
ELP 6AB

59' : 03330-1339
A 3003

73' : 03282-1335
GAL 330

86' : 03284-1131
LDS3497

87' : 03258-1304
HU 21

97' : 03332-1111
A 3002

99' : 03300-1109
STF 407AB

112' : 03284-1425
GWP 470

114' : 03277-1422
A 2911

115' : 03240-1220
BRT2629

117' : 03379-1133
HU 22

117' : 03390-1201
BRT2630

119' : 03381-1133
OL 151

120' : 03373-1120
HEI 314

122' : 03237-1321
KPP1854

124' : 03334-1044
KPP1034

125' : 03346-1048
A 2505

129' : 03400-1206
UC 1038

130' : 03264-1100
TDS2548

130' : 03244-1400
BU 12

136' : 03409-1237
STF 436

143' : 03221-1316
HJ 3569



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Binary Systems
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Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

03316-1244 RST 3383 (HD 21918)

 
 
03h 31m 36.71s -12° 44' 05.2" P.A. 58.00 sep 0.9 mag 7.95,11.39 Sp A2m+A5/A9 dist. 208.77 pc (681.01 l.y.)
 
 
Coord 2000 03316-1244 Discov num RST3383 Comp Coord arcsec 2000 03 31 36.71 -12 44 05.2
Date first 1939 Date last 1991 Obs 5
Pa first 46 Pa last 57.6 P.A. Now (θ) 57.6°
Sep first 0.7 Sep last 0.87 Sep. Now (ρ) 0.87"
Mag pri 7.95 Mag sec 11.39 delta mag (ΔM) 3.44 Spectral class A2m+A5/A9 (white/white)
Pri motion ra -013 Sec motion ra -012
Pri motion dec -004 Sec motion dec -003
Notes
rPM=0.104 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 21918 Constellation Eridanus SAO 149015 HIP 16435
Tycho2 5302-00030-1 Gaia DR2 5113785085653632128 HD 21918 BD BD-13 675
Distance 208.77 Distance ly 681.01
 
 
WDS 03316-1244 RST 3383 (HD 21918) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Rst1933 T - Rossiter, R.A. 1933MmRAS..65...27R
Rst1933 MemRAS 65, 27, 1933
Rst1937 Ma - Rossiter, R.A. 1937MmRAS..65...51R
Rst1937 MemRAS 65, 51, 1937
Rst1943 Ma - Rossiter, R.A. 1943POMic...8..133R
Rst1943 Pub. Univ. Michigan Obs. 8, 133, 1943
Rst1944 - Rossiter, R.A. 1944POMic...9....1R
Rst1944 Pub. Univ. Michigan Obs. 9, 1, 1944
Rst1947 Ma - Rossiter, R.A. 1947POMic...9....7R
Rst1947 Pub. Univ. Michigan Obs. 9, 7, 1947
Rst1955 Ma j Rossiter, R.A. 1955POMic..11....1R
Rst1955 +P+ Pub. Univ. Michigan Obs. 11, 1, 1955
Rst1964 Ma - Rossiter, R.A. 1964POMic...9...73R
Rst1964 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
03316-1244 RST3383 1991 5 58 0.9 7.95 11.39 A2mA5A9 033136.71-124405.2

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

 
 
WDS 03316-1244 RST 3383 (HD 21918) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03316-1244 RST 3383 (HD 21918) : MEASURES
 
 
No records found.

 
 
WDS 03316-1244 (HD 21918) : VIRTUAL EYEPIECE
 
 

03316-1244 RST3383A mag 7.95 Sp A2m 03316-1244 RST3383B sep 0.8 P.A. 57.00 mag 11.39 Sp A5/A9 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 03316-1244 (HD 21918) : ALADIN DSS IMAGE @ 03h 31m 36.71s -12° 44' 05.2"
 
 
 
 
WDS 03316-1244 RST 3383 (HD 21918) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03316-1244 RST3383 distance=0' 03304-1257 GWP 474 distance=22' 03325-1306 TDS2569 distance=26' 03334-1301 HU 207 distance=31' 03298-1307 RST3382 distance=35' 03343-1204 ELP 6AB distance=56' 03330-1339 A 3003 distance=59' 03282-1335 GAL 330 distance=73' 03284-1131 LDS3497 distance=86' 03258-1304 HU 21 distance=87' 03332-1111 A 3002 distance=97' 03300-1109 STF 407AB distance=99' 03300-1109 STF 407AC distance=99' 03284-1425 GWP 470 distance=112' 03277-1422 A 2911 distance=114' 03240-1220 BRT2629 distance=115' 03379-1133 HU 22 distance=117' 03390-1201 BRT2630 distance=117' 03381-1133 OL 151 distance=119' 03373-1120 HEI 314 distance=120' 03237-1321 KPP1854 distance=122' 03334-1044 KPP1034 distance=124' 03346-1048 A 2505 distance=125' 03400-1206 UC 1038 distance=129' 03264-1100 TDS2548 distance=130' 03244-1400 BU 12 distance=130' 03409-1237 STF 436 distance=136' 03279-1039 KPP3526AC distance=137' 03279-1039 KPP3527BC distance=137' 03221-1316 HJ 3569 distance=143' 03285-1028 KPP3529 distance=144' 03244-1106 NSN 247 distance=144' 03226-1142 RST3380 distance=147' 03301-1019 GWP 473 distance=147' 03338-1508 TOK 239AB distance=147' 03232-1404 GWP 459AB distance=148' 03232-1404 DAM1303Aa,Ab distance=148' 03233-1121 HJ 2187 distance=149' 03235-1413 RST3381 distance=149' 03412-1148 RST3385 distance=152' 03320-1008 WIS 96 distance=157' 03318-1521 UC 1020 distance=157' 03214-1156 RST3379 distance=158' 03338-1508 TOK 239Ba,Bb distance=158' 03363-1020 UC 1032 distance=160' 03242-1048 GWP 463 distance=160' 03402-1104 KPP1872 distance=161' 03332-1003 BU 532AB distance=163' 03332-1003 BU 532AC distance=163' 03424-1200 GWP 503 distance=164' 03212-1359 HJ 3567 distance=169' 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 03316-1244 RST3383 58 0.9
Show 03304-1257 GWP 474 256 86.2 22
Show 03325-1306 TDS2569 96 0.4 26
Show 03334-1301 HU 207 297 1.0 31
Show 03298-1307 RST3382 57 0.8 35
Show 03343-1204 ELP 6 AB 280 1.7 56
Show 03330-1339 A 3003 191 1.2 59
Show 03282-1335 GAL 330 82 9.5 73
Show 03284-1131 LDS3497 59 9.0 86
Show 03258-1304 HU 21 39 1.4 87
Show 03332-1111 A 3002 82 0.4 97
Show 03300-1109 STF 407 AB 52 2.8 99
Show 03300-1109 STF 407 AC 202 132.0 99
Show 03284-1425 GWP 470 147 45.0 112
Show 03277-1422 A 2911 108 2.3 114
Show 03240-1220 BRT2629 19 7.0 115
Show 03379-1133 HU 22 119 0.7 117
Show 03390-1201 BRT2630 3.6 117
Show 03381-1133 OL 151 101 4.4 119
Show 03373-1120 HEI 314 72 2.4 120
Show 03237-1321 KPP1854 117 14.4 122
Show 03334-1044 KPP1034 267 8.3 124
Show 03346-1048 A 2505 101 2.0 125
Show 03400-1206 UC 1038 9.6 129
Show 03264-1100 TDS2548 238 2.0 130
Show 03244-1400 BU 12 281 2.4 130
Show 03409-1237 STF 436 239 47.4 136
Show 03279-1039 KPP3526 AC 62 44.4 137
Show 03279-1039 KPP3527 BC 241 2.3 137
Show 03221-1316 HJ 3569 212 19.5 143
Show 03285-1028 KPP3529 81 1.5 144
Show 03244-1106 NSN 247 9 13.2 144
Show 03226-1142 RST3380 138 2.0 147
Show 03301-1019 GWP 473 76 13.6 147
Show 03338-1508 TOK 239 AB 180 624.7 147
Show 03232-1404 GWP 459 AB 65 147.8 148
Show 03232-1404 DAM1303 Aa,Ab 314 2.4 148
Show 03233-1121 HJ 2187 241 62.7 149
Show 03235-1413 RST3381 96 0.6 149
Show 03412-1148 RST3385 9 15.1 152
Show 03320-1008 WIS 96 42 741.0 157
Show 03318-1521 UC 1020 163 51.8 157
Show 03214-1156 RST3379 236 0.9 158
Show 03338-1508 TOK 239 Ba,Bb 337 0.9 158
Show 03363-1020 UC 1032 84 29.2 160
Show 03242-1048 GWP 463 229 18.6 160
Show 03402-1104 KPP1872 317 14.6 161
Show 03332-1003 BU 532 AB 270 3.3 163
Show 03332-1003 BU 532 AC 311 80.2 163
Show 03424-1200 GWP 503 154 12.2 164
Show 03212-1359 HJ 3567 110 5.3 169

 
 
WDS 03316-1244 : COMPONENTS
 
 
  A
B pa=57.0°
sep=0.85"
 
 
03316-1244 A
 
 
Componente originario normalizzato AB Name HD 21918 Coord arcsec 2000 033136.71-124405.2 Mag 7.95
Spectral class A2m (white) PmRA -13.00 PmDE -4.0 SAO 149015
HIP 16435 Tycho2 5302-00030-1 HD 21918 BD BD-13 675
Tycho2
Tycho2 5302-00030-1 Pflag RAmdeg 52.90297366 DEmdeg -12.73477489
PmRA -13.2 PmDE -3.5 E RAmdeg 5 E DEmdeg 7
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.31 EpDEm 1990.71
Num 10 Q RAmdeg 0.8 Q DEmdeg 0.9 Q pmRA 0.7
Q pmDE 0.8 BTmag 8.204 E BTmag 0.017 VTmag 7.947
E VTmag 0.012 Prox 9 TYC T HIP 16435
CCDM A RAdeg 52.90300444 DEdeg -12.73476667 EpRA 1990 1.74
EpDE 1990 1.55 E RAdeg 5.1 E DEdeg 6.5 Posflg
Corr 0.0
SAO
SAO 149015 DelFlag RA1950 PmRA1950 -0.003
DE1950 PmDE1950 0.021 Vmag 7.8 SpType A2
Double code Source 20 CatNum 805 DM BD-13 675
DMcomp BDsup HD 21918 M HD 0
GC RA1950rad 0.91302842 DE1950rad -0.22521204 PmRA2000 -0.0025
PmDE2000 0.02
Hipparcos
Catalog H HIP 16435 Proxy H RAhms 03 31 36.72
DEdms -12 44 05.2 Vmag 7.86 VarFlag R Vmag H
RAdeg 52.903 DEdeg -12.7348 AstroRef A Plx 4.91
CCDM 03316-1244 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 58 Rho 0.875 HD 21918 BD BD-13 675
CD CP Dm number -13 675 VIred 0.26
SpType A2m... R SpType Coord arcsec 2000 033136.72-124405.2
Hipparcos 2
HIP 16435 Sn 15 So 3 Nc 2
RArad 0.9233316086 DErad -0.2222635892 Plx 4.79 PmRA -12.41
PmDE -3.6 E RArad 0.74 E DErad 0.52 E Plx 0.76
E pmRA 0.9 E pmDE 0.69 Hpmag 7.9316 E Hpmag 0.0017
SHp 0.014 VA 0 BV 0.266 E BV 0.018
VI 0.3
CCDM
Ccdm 03316-1244 RComp Comp A Note1
Note2 Discov num DRAs 0.57 DDEs -3.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.6 Sp A2 PmNote *
PmRA -44 PmDE 21 Dm number -13 675 Cat1 BD
Name2 149015 Cat2 SAO HD 21918 M HD
ADS BDS M ADS BDS N IDS IDS 03269S1304A
HIC 16435
 
 
03316-1244 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 033136.76-124404.7 Mag 11.39 Spectral class A5/A9 (white)
PmRA -12.00 PmDE -3.0 Calc delta mag 3.44 Calc coord yes
CCDM
Ccdm 03316-1244 RComp Comp B Note1
Note2 Discov num RST3383 DRAs DDEs
R dRAs Year 1937 Theta 045 Rho 0.7
Obs 3 Vmag 11.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 03269S1304B
HIC 16435