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Doubles in session


Current system
03323-0705
STF 411 AB
HD 21978


Nearby doubles
17' : 03312-0707
SLW 156

29' : 03336-0725
CLL 2

37' : 03336-0735
GWP 478

47' : 03334-0748
KPP2872

72' : 03363-0628
SLW 158

74' : 03327-0553
GWP 476

79' : 03369-0742
DAM 378

85' : 03266-0656
KPP2648

86' : 03313-0542
HLD 65

91' : 03379-0740
A 459

91' : 03379-0739
BU 308

99' : 03377-0801
GWP 487

102' : 03298-0530
ITF 241

105' : 03343-0525
ITF 242

112' : 03369-0538
SLW 159

113' : 03297-0850
GAL 331

113' : 03378-0824
RST4230

115' : 03251-0749
RST4226

122' : 03387-0821
RST4231

124' : 03306-0505
HUB 2

129' : 03237-0656
GAI9002AB

130' : 03295-0503
TSN 44

130' : 03388-0830
BU 534

132' : 03234-0710
GWP 461

134' : 03403-0805
STF 433

140' : 03347-0451
TSN 127



Selections
Full WDS
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.

03323-0705 STF 411 AB (HD 21978)

 
 
03h 32m 15.40s -07° 05' 24.1" P.A. 88.00 sep 18.8 mag 7.36,9.19 Sp F5III+ dist. 119.33 pc (389.25 l.y.)
 
 
Coord 2000 03323-0705 Discov num STF 411 Comp AB Coord arcsec 2000 03 32 15.40 -07 05 24.1
Date first 1831 Date last 2016 Obs 34
Pa first 90 Pa last 88.1 P.A. Now (θ) 88.1°
Sep first 18.0 Sep last 18.764 Sep. Now (ρ) 18.764"
Mag pri 7.36 Mag sec 9.19 delta mag (ΔM) 1.83 Spectral class F5III+ (yellow-white)
Pri motion ra -036 Sec motion ra -037
Pri motion dec -046 Sec motion dec -046
Notes N V (See Notes, Proper motion indicates physical)
rPM=0.017 (< 0.3, Physical double)
This double is physical.
 
 
03323-0705 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 21978 130551 03 32 15 -07 05 24 STF 411 AB 2016 34 88 18.8 7.36 9.19 1.83 <===
Show 130551 03 32 15 -07 05 24 STF 411 AC 2015 11 31 45.0 7.36 13.59 6.23
Show 130551 03 32 15 -07 05 24 ABH 21 AD 2015 8 72 82.7 7.36 13.39 6.03
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 21978 Constellation Eridanus SAO 130551 HIP 16485
Tycho2 4722-00343-1 Gaia DR2 5168647176826954880 HD 21978 BD BD-07 618
Distance 119.33 Distance ly 389.25
 
 
WDS 03323-0705 STF 411 AB (HD 21978) : NOTES
 
 
discov_num notes refcode
STF 411 B is BD-07@619 (Roman).
B component spectral type F9IV AbH2000
 
 
REFERENCES
 
 
refcode metd author reference
AbH2000 C u Abt, H.A. & Corbally, C.J. 2000ApJ...541..841A
AbH2000 ApJ 541, 841, 2000
AbH2000 (Multi-epoch astrometry, photometry, and spectroscopy to determine
AbH2000 optical/physical nature of members of possible Trapezium 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
03323-0705 STF 411 AB 2002 22 88 18.8 7.36 9.19 F5III+ N D 033215.40-070524.1
03323-0705 STF 411 AB 2014 26 88 18.8 7.36 9.19 F5III+ N 033215.40-070524.1
03323-0705 STF 411 AB 2015 28 88 18.8 7.36 9.19 F5III+ N W 033215.40-070524.1
03323-0705 STF 411 AB 2016 34 88 18.8 7.36 9.19 F5III+ NV 033215.40-070524.1

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

 
 
WDS 03323-0705 STF 411 AB (HD 21978) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03323-0705 STF 411 AB (HD 21978) : MEASURES
 
 
No records found.

 
 
WDS 03323-0705 (HD 21978) : VIRTUAL EYEPIECE
 
 

03323-0705 STF 411A mag 7.36 Sp F5III 03323-0705 STF 411B sep 18.6 P.A. 88.10 mag 9.19 03323-0705 STF 411C sep 44.9 P.A. 30.90 mag 13.59 03323-0705 ABH 21D sep 82.1 P.A. 72.30 mag 13.39 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 03323-0705 (HD 21978) : ALADIN DSS IMAGE @ 03h 32m 15.40s -07° 05' 24.1"
 
 
 
 
WDS 03323-0705 STF 411 AB (HD 21978) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03323-0705 STF 411AB distance=1' 03323-0705 STF 411AC distance=1' 03323-0705 ABH 21AD distance=1' 03312-0707 SLW 156 distance=17' 03336-0725 CLL 2 distance=29' 03336-0735 GWP 478 distance=37' 03334-0748 KPP2872 distance=47' 03363-0628 SLW 158 distance=72' 03327-0553 GWP 476 distance=74' 03369-0742 DAM 378 distance=79' 03266-0656 KPP2648 distance=85' 03313-0542 HLD 65 distance=86' 03379-0740 A 459 distance=91' 03379-0739 BU 308 distance=91' 03377-0801 GWP 487 distance=99' 03298-0530 ITF 241 distance=102' 03343-0525 ITF 242 distance=105' 03369-0538 SLW 159 distance=112' 03297-0850 GAL 331 distance=113' 03378-0824 RST4230 distance=113' 03251-0749 RST4226 distance=115' 03387-0821 RST4231 distance=122' 03306-0505 HUB 2 distance=124' 03237-0656 GAI9002AB distance=129' 03237-0656 GAI9002AC distance=129' 03295-0503 TSN 44 distance=130' 03388-0830 BU 534 distance=130' 03234-0710 GWP 461 distance=132' 03403-0805 STF 433 distance=134' 03347-0451 TSN 127 distance=140' 03237-0609 GWP 462 distance=140' 03233-0748 BU 531 distance=140' 03395-0535 ITF 246 distance=141' 03329-0927 BLA 2Aa,Ab distance=143' 03329-0927 MBA 1AB (Ran) distance=143' 03329-0927 MBA 1AC (Ran) distance=143' 03329-0927 MBA 1AD (Ran) distance=143' 03329-0927 MBA 1AE (Ran) distance=143' 03329-0927 MBA 1AF (Ran) distance=143' 03329-0927 MBA 1AG (Ran) distance=143' 03329-0927 MBA 1AH (Ran) distance=143' 03329-0927 MBA 1AI (Ran) distance=143' 03329-0927 MBA 1AJ (Ran) distance=143' 03329-0927 MBA 1AK (Ran) distance=143' 03395-0528 ITF 245 distance=146' 03332-0437 RST4229AB distance=150' 03332-0437 DAM 757AB,C distance=150' 03230-0548 GWP 458 distance=158' 03284-0434 BU 1180AB distance=163' 03284-0434 BU 1180AB,C distance=163' 03218-0806 DEA 26 distance=167' 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 03323-0705 STF 411 AB 88 18.8 1
Show 03323-0705 STF 411 AC 31 45.0 1
Show 03323-0705 ABH 21 AD 72 82.7 1
Show 03312-0707 SLW 156 273 15.3 17
Show 03336-0725 CLL 2 139 66.7 29
Show 03336-0735 GWP 478 277 16.3 37
Show 03334-0748 KPP2872 198 4.7 47
Show 03363-0628 SLW 158 351 123.0 72
Show 03327-0553 GWP 476 48 53.3 74
Show 03369-0742 DAM 378 299 13.1 79
Show 03266-0656 KPP2648 241 24.7 85
Show 03313-0542 HLD 65 28 5.8 86
Show 03379-0740 A 459 12 1.7 91
Show 03379-0739 BU 308 324 1.9 91
Show 03377-0801 GWP 487 38 57.2 99
Show 03298-0530 ITF 241 178 3.8 102
Show 03343-0525 ITF 242 53 1.7 105
Show 03369-0538 SLW 159 117 8.8 112
Show 03297-0850 GAL 331 111 20.7 113
Show 03378-0824 RST4230 8 4.0 113
Show 03251-0749 RST4226 222 1.2 115
Show 03387-0821 RST4231 135 0.2 122
Show 03306-0505 HUB 2 115 14.1 124
Show 03237-0656 GAI9002 AB 317 0.8 129
Show 03237-0656 GAI9002 AC 167 11.5 129
Show 03295-0503 TSN 44 78 15.3 130
Show 03388-0830 BU 534 197 2.4 130
Show 03234-0710 GWP 461 196 18.3 132
Show 03403-0805 STF 433 336 37.5 134
Show 03347-0451 TSN 127 146 0.1 140
Show 03237-0609 GWP 462 340 45.2 140
Show 03233-0748 BU 531 40 5.0 140
Show 03395-0535 ITF 246 320 2.5 141
Show 03329-0927 BLA 2 Aa,Ab 143 0.0 143
Show Ran 03329-0927 MBA 1 AB 339 15.0 143
Show Ran 03329-0927 MBA 1 AC 27 18.8 143
Show Ran 03329-0927 MBA 1 AD 355 44.3 143
Show Ran 03329-0927 MBA 1 AE 69 28.7 143
Show Ran 03329-0927 MBA 1 AF 70 41.3 143
Show Ran 03329-0927 MBA 1 AG 119 41.1 143
Show Ran 03329-0927 MBA 1 AH 321 21.0 143
Show Ran 03329-0927 MBA 1 AI 294 34.0 143
Show Ran 03329-0927 MBA 1 AJ 145 27.9 143
Show Ran 03329-0927 MBA 1 AK 208 38.5 143
Show 03395-0528 ITF 245 229 6.9 146
Show 03332-0437 RST4229 AB 232 3.0 150
Show 03332-0437 DAM 757 AB,C 67 22.0 150
Show 03230-0548 GWP 458 127 23.1 158
Show 03284-0434 BU 1180 AB 24 0.4 163
Show 03284-0434 BU 1180 AB,C 117 7.4 163
Show 03218-0806 DEA 26 212 74.3 167

 
 
WDS 03323-0705 : COMPONENTS
 
 
  A B C
B pa=88.1°
sep=18.62"
 
C pa=30.9°
sep=44.93"
pa=6.7°
sep=38.19"
 
D pa=72.3°
sep=82.11"
pa=67.8°
sep=64.39"
pa=103.8°
sep=56.77"
 
 
03323-0705 A
 
 
Name HD 21978 Coord arcsec 2000 033215.40-070524.1 Mag 7.36 Spectral class F5III (yellow-white)
PmRA -36.00 PmDE -46.0 SAO 130551 HIP 16485
Tycho2 4722-00343-1 HD 21978 BD BD-07 618
Tycho2
Tycho2 4722-00343-1 Pflag RAmdeg 53.06408427 DEmdeg -7.09012918
PmRA -36.0 PmDE -46.5 E RAmdeg 5 E DEmdeg 6
E pmRA 1.4 E pmDE 1.3 EpRAm 1991.50 EpDEm 1991.04
Num 12 Q RAmdeg 0.8 Q DEmdeg 1.3 Q pmRA 0.8
Q pmDE 1.2 BTmag 7.874 E BTmag 0.016 VTmag 7.359
E VTmag 0.011 Prox 189 TYC T HIP 16485
CCDM A RAdeg 53.06416694 DEdeg -7.09002056 EpRA 1990 1.77
EpDE 1990 1.62 E RAdeg 4.8 E DEdeg 5.6 Posflg
Corr -0.1
SAO
SAO 130551 DelFlag RA1950 PmRA1950 -0.0021
DE1950 PmDE1950 -0.04 Vmag 7.5 SpType F8
Double code Source 26 CatNum 831 DM BD-07 618
DMcomp BDsup HD 21978 M HD 0
GC RA1950rad 0.9154598 DE1950rad -0.12667583 PmRA2000 -0.0017
PmDE2000 -0.042
Hipparcos
Catalog H HIP 16485 Proxy RAhms 03 32 15.40
DEdms -07 05 24.1 Vmag 7.31 VarFlag R Vmag G
RAdeg 53.0642 DEdeg -7.09002 AstroRef A Plx 5.54
CCDM 03323-0705 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 21978 BD BD-07 618
CD CP Dm number -07 618 VIred 0.56
SpType F8 R SpType Coord arcsec 2000 033215.40-070524.1
Hipparcos 2
HIP 16485 Sn 95 So 3 Nc 1
RArad 0.9261445517 DErad -0.1237441289 Plx 8.38 PmRA -39.23
PmDE -46.64 E RArad 1.4 E DErad 1.09 E Plx 1.85
E pmRA 2.81 E pmDE 2.31 Hpmag 7.4281 E Hpmag 0.0207
SHp 0.043 VA 0 BV 0.488 E BV 0.015
VI 0.56
CCDM
Ccdm 03323-0705 RComp Comp A Note1
Note2 Discov num DRAs -2.56 DDEs -24.2
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.8 Sp F8 PmNote *
PmRA -31 PmDE -40 Dm number -07 618 Cat1 BD
Name2 130551 Cat2 SAO HD 21978 M HD
ADS BDS A 2596 M ADS BDS N IDS IDS 03274S0726A
HIC 16485
 
 
03323-0705 B
 
 
Coord arcsec 2000 033216.65-070523.5 Mag 9.19 PmRA -37.00 PmDE -46.0
HIP 16486 Tycho2 4722-01541-1 BD BD-07 619 Calc delta mag 1.83
Calc coord yes
Tycho2
Tycho2 4722-01541-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 9.809 E BTmag 0.034 VTmag 9.187
E VTmag 0.026 Prox 189 TYC T HIP 16486
CCDM B RAdeg 53.06946333 DEdeg -7.08983222 EpRA 1990 1.72
EpDE 1990 1.70 E RAdeg 18.0 E DEdeg 18.4 Posflg
Corr 0.0
Hipparcos
Catalog H HIP 16486 Proxy RAhms 03 32 16.66
DEdms -07 05 23.4 Vmag 9.74 VarFlag R Vmag H
RAdeg 53.0694 DEdeg -7.08984 AstroRef B Plx -4.23
CCDM 03323-0705 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual A M HIP
Theta Rho HD BD BD-07 619
CD CP Dm number -07 619 VIred 0.65
SpType F8 R SpType Coord arcsec 2000 033216.66-070523.4
Hipparcos 2
HIP 16486 Sn 95 So 3 Nc 1
RArad 0.9262362536 DErad -0.1237411671 Plx -2.01 PmRA -7.65
PmDE -6.07 E RArad 12.63 E DErad 7.66 E Plx 15.78
E pmRA 28.53 E pmDE 23.8 Hpmag 9.3806 E Hpmag 0.0996
SHp 0 VA 0 BV 0.587 E BV 0.059
VI 0.66
CCDM
Ccdm 03323-0705 RComp Comp B Note1
Note2 Discov num STF 411 DRAs -1.29 DDEs -24.7
R dRAs 10 Year 1880 Theta 088 Rho 19.1
Obs 6 Vmag 8.8 Sp PmNote *
PmRA -31 PmDE -55 Dm number -07 619 Cat1 BD
Name2 130553 Cat2 SAO HD M HD
ADS BDS A 2596 M ADS BDS N N IDS IDS 03274S0726B
HIC 16486
 
 
03323-0705 C
 
 
Coord arcsec 2000 033216.95-070445.5 Mag 13.59 PmRA 1.00 PmDE 4.0
Calc delta mag 6.23 Calc coord yes
CCDM
Ccdm 03323-0705 RComp Comp C Note1
Note2 Discov num STF 411 DRAs -1.18 DDEs 12.9
R dRAs 66 Year 1880 Theta 028 Rho 38.2
Obs 2 Vmag 11.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2596 M ADS BDS N IDS IDS 03274S0726C
HIC
 
 
03323-0705 D
 
 
Coord arcsec 2000 033220.65-070459.1 Mag 13.39 PmRA 3.00 PmDE -5.0
Calc delta mag 6.03 Calc coord yes