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Current system
03121-2859
HJ 3555
Dalim


Nearby doubles
10' : 03121-2907
LDS5416

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LDS5415

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TDS2507

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SKF1201

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SKF1827

64' : 03129-3003
LDS 90

65' : 03124-3004
TDS2478

66' : 03071-2900
UC 951

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LDS 86AB

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RST 64

75' : 03094-3004
LDS3460

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RST1255

78' : 03119-3017
SEE 22

80' : 03071-2816
LDS3455

90' : 03078-2750
VIG 3

92' : 03187-2931
DAW 78

92' : 03123-2727
LDS 88

101' : 03116-2719
FAR 52

101' : 03064-2753
UC 947

104' : 03114-3043
TDS2471

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LDS 93

107' : 03195-2815
UC 981

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TDS 110

109' : 03093-2717
KPP2308

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UC 938

117' : 03048-3007
RST1254



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

03121-2859 HJ 3555 (Dalim)

 
 
03h 12m 04.53s -28° 59' 15.4" P.A. 301.00 sep 5.4 mag 3.98,7.19 Sp F8V dist. 14.24 pc (46.45 l.y.)
 
 
Coord 2000 03121-2859 Discov num HJ 3555 Comp Coord arcsec 2000 03 12 04.53 -28 59 15.4
Date first 1835 Date last 2017 Obs 102
Pa first 306 Pa last 301.1 P.A. Now (θ) 301.1°
Sep first 3.0 Sep last 5.369 Sep. Now (ρ) 5.369"
Mag pri 3.98 Mag sec 7.19 delta mag (ΔM) 3.21 Spectral class F8V (yellow-white)
Pri motion ra +369 Sec motion ra +346
Pri motion dec +617 Sec motion dec +648
Notes N O (See Notes, Orbital solution)
rPM=0.053 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Dalim Var name NSV1074 For Constellation Fornax SAO 168373
HIP 14879 Tycho2 6445-00990-1 HD 20010 HR 963
GC 3831 ADS 2402 GL Gl 127A CD CD-29 1177
CP CP-29 362 Bayer Alpha Eridani Bayer name Alp Eri Flamsteed 12 Eridani
Flamsteed name 12 Eri Distance 14.24 Distance ly 46.45 Bayer greek α Eri
Other names Fornacis, 12 Eridani, 12 Eri
Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Eri vs For)
 
 
ORBITAL ELEMENTS
 
 
Period (P)268.212y± 8.7169 Periastron (T)1947.4113y± 0.2932 Semi-major axis (a)3.96341a± 0.06153
Eccentricity (e)0.73704± 0.00824 Inclination (i)81.484°± 0.533 Longitude of periastron (ω)43.023°± 1.027
Node (Ω)117.397°± 0.323 Notesn ReferenceIzm2019
Equinox Last observation2013 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 299.3 4.855
2001 299.4 4.893
2002 299.5 4.930
2003 299.6 4.966
2004 299.6 5.001
2005 299.7 5.035
2006 299.8 5.067
2007 299.9 5.098
2008 300.0 5.128
2009 300.1 5.157
2010 300.1 5.185
2011 300.2 5.211
2012 300.3 5.237
2013 300.4 5.262
2014 300.4 5.285
2015 300.5 5.308
2016 300.6 5.329
2017 300.7 5.350
2018 300.7 5.369
2019 300.8 5.388
2020 300.9 5.405
2021 301.0 5.422
2022 301.0 5.438
2023 301.1 5.453
2024 301.2 5.467
2025 301.2 5.480
2026 301.3 5.493
2027 301.4 5.504
2028 301.5 5.515
2029 301.5 5.525
2030 301.6 5.534


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds03121-2859b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 03121-2859 HJ 3555 (Dalim) : NOTES
 
 
discov_num notes refcode
HJ 3555 alp For = 12 Eri = Dalim. The magnitude of B is uncertain and has been
suspected to vary. Another century is needed for apastron coverage.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
A is GJ 127. B is possible SB. Variability of RV(B) is based on
historic RV (Eggen, van den Bos) Tok2014d
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
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.)
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 HJ Herschel, J.F.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03121-2859 HJ 3555 2002 94 299 4.8 3.98 7.19 F8V NOD 031204.29-285920.4
03121-2859 HJ 3555 2008 95 301 5.2 3.98 7.19 F8V NOD 031204.29-285920.4
03121-2859 HJ 3555 2009 96 300 5.2 3.98 7.19 F8V NOD 031204.29-285920.4
03121-2859 HJ 3555 2013 97 301 5.4 3.98 7.19 F8V NO 031204.29-285920.4
03121-2859 HJ 3555 2015 99 300 5.3 3.98 7.19 F8V NO 031204.53-285915.4
03121-2859 HJ 3555 2017 100 301 5.4 3.98 7.19 F8V NO 031204.53-285915.4

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

 
 
WDS 03121-2859 HJ 3555 (Dalim) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03121-2859 HJ 3555 (Dalim) : MEASURES
 
 
No records found.

 
 
WDS 03121-2859 (Dalim) : VIRTUAL EYEPIECE
 
 

03121-2859 HJ 3555A mag 3.98 Sp F8V 03121-2859 HJ 3555B sep 4.9 P.A. 304.60 mag 7.19 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 03121-2859 (Dalim) : ALADIN DSS IMAGE @ 03h 12m 04.53s -28° 59' 15.4"
 
 
 
 
WDS 03121-2859 HJ 3555 (Dalim) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03121-2859 HJ 3555 (Dalim) distance=1' 03121-2907 LDS5416 distance=10' 03113-2841 LDS5415 distance=20' 03160-2845 TDS2507 distance=53' 03140-2950 SKF1201 distance=57' 03126-3000 SKF1827 distance=62' 03129-3003 LDS 90 distance=64' 03124-3004 TDS2478 distance=65' 03071-2900 UC 951 distance=66' 03079-2813 LDS 86AB distance=72' 03079-2813 HDS3408AC distance=72' 03163-2811 RST 64 distance=74' 03094-3004 LDS3460 distance=75' 03179-2855 RST1255 distance=77' 03119-3017 SEE 22 distance=78' 03071-2816 LDS3455 distance=80' 03078-2750 VIG 3 distance=90' 03187-2931 DAW 78 distance=92' 03123-2727 LDS 88 distance=92' 03116-2719 FAR 52 distance=101' 03064-2753 UC 947 distance=101' 03114-3043 TDS2471 distance=104' 03201-2851 LDS 93 distance=106' 03195-2815 UC 981 distance=107' 03180-2746 TDS 110 distance=108' 03093-2717 KPP2308 distance=109' 03041-2931 UC 938 distance=110' 03048-3007 RST1254 distance=117' 03184-2734 BVD 33 distance=120' 03214-2924 I 1145 distance=125' 03199-3014 I 719 distance=127' 03022-2844 RST1252 distance=131' 03047-3030 RST1253 distance=133' 03017-2807 SKF1277 distance=147' 03143-3129 TDS2491 distance=153' 03063-2646 RST 58 distance=154' 03028-3034 UC 933 distance=155' 03195-3100 TSN 126 distance=155' 03226-3011 LDS3487 distance=155' 03126-2618 KPP2865 distance=162' 02599-2924 LDS5159 distance=162' 03200-3109 B 48 distance=166' 03018-2723 LDS5408AB distance=167' 03018-2723 LDS5408Aa,Ab distance=167' 03171-3133 LDS3471 distance=167' 03000-3004 RST1250 distance=171' 03240-3014 TDS2538 distance=172' 03227-2714 HDS 422 distance=176' 03103-3153 LDS5413 distance=177' 03012-3045 TDS2414 distance=177' 03249-2806 LDS5424 distance=177' 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 Dalim 03121-2859 HJ 3555 301 5.4 1
Show 03121-2907 LDS5416 208 251.5 10
Show 03113-2841 LDS5415 119 89.1 20
Show 03160-2845 TDS2507 80 0.9 53
Show 03140-2950 SKF1201 169 31.3 57
Show 03126-3000 SKF1827 6 3.0 62
Show 03129-3003 LDS 90 225 13.0 64
Show 03124-3004 TDS2478 215 0.9 65
Show 03071-2900 UC 951 180 60.3 66
Show 03079-2813 LDS 86 AB 208 66.6 72
Show 03079-2813 HDS3408 AC 96 37.4 72
Show 03163-2811 RST 64 242 3.9 74
Show 03094-3004 LDS3460 68 10.6 75
Show 03179-2855 RST1255 28 2.4 77
Show 03119-3017 SEE 22 335 1.4 78
Show 03071-2816 LDS3455 281 252.7 80
Show 03078-2750 VIG 3 29 6.1 90
Show 03187-2931 DAW 78 320 0.0 92
Show 03123-2727 LDS 88 57 12.5 92
Show 03116-2719 FAR 52 18 0.1 101
Show 03064-2753 UC 947 193 50.0 101
Show 03114-3043 TDS2471 167 0.5 104
Show 03201-2851 LDS 93 358 253.0 106
Show 03195-2815 UC 981 248 20.2 107
Show 03180-2746 TDS 110 108 1.0 108
Show 03093-2717 KPP2308 110 19.5 109
Show 03041-2931 UC 938 336 54.5 110
Show 03048-3007 RST1254 285 1.7 117
Show 03184-2734 BVD 33 301 24.6 120
Show 03214-2924 I 1145 67 1.6 125
Show 03199-3014 I 719 325 1.5 127
Show 03022-2844 RST1252 131 1.6 131
Show 03047-3030 RST1253 125 1.1 133
Show 03017-2807 SKF1277 286 2.5 147
Show 03143-3129 TDS2491 159 0.5 153
Show 03063-2646 RST 58 184 2.7 154
Show 03028-3034 UC 933 217 17.5 155
Show 03195-3100 TSN 126 130 0.6 155
Show 03226-3011 LDS3487 253 25.0 155
Show 03126-2618 KPP2865 311 8.5 162
Show 02599-2924 LDS5159 217 22.7 162
Show 03200-3109 B 48 85 2.1 166
Show 03018-2723 LDS5408 AB 345 105.8 167
Show 03018-2723 LDS5408 Aa,Ab 184 3.4 167
Show 03171-3133 LDS3471 49 14.3 167
Show 03000-3004 RST1250 60 0.9 171
Show 03240-3014 TDS2538 0.5 172
Show 03227-2714 HDS 422 228 0.2 176
Show 03103-3153 LDS5413 268 209.1 177
Show 03012-3045 TDS2414 235 0.5 177
Show 03249-2806 LDS5424 211 21.2 177

 
 
WDS 03121-2859 : COMPONENTS
 
 
  A
B pa=304.6°
sep=4.88"
 
 
03121-2859 A
 
 
Componente originario normalizzato AB Common name Dalim Other names Fornacis, 12 Eridani, 12 Eri Coord arcsec 2000 031204.53-285915.4
Mag 3.98 Spectral class F8V (yellow-white) PmRA 369.00 PmDE 617.0
SAO 168373 HIP 14879 Tycho2 6445-00990-1 HD 20010
HR 963 GC 3831 CD CD-29 1177 CP CP-29 362
Bayer Alpha Fornacis Bayer name Alp For
Tycho2
Tycho2 6445-00990-1 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 4.510 E BTmag 0.014 VTmag 3.976
E VTmag 0.009 Prox 45 TYC T HIP 14879
CCDM A RAdeg 48.01789083 DEdeg -28.98900556 EpRA 1990 1.75
EpDE 1990 1.84 E RAdeg 3.3 E DEdeg 3.1 Posflg
Corr -0.3
SAO
SAO 168373 DelFlag RA1950 PmRA1950 0.0254
DE1950 PmDE1950 0.644 Vmag 4 SpType F8
Double code Source 71 CatNum 117 DM CD-29 1177
DMcomp BDsup HD 20010 M HD 0
GC 3831 RA1950rad 0.82879501 DE1950rad -0.50934243 PmRA2000 0.0259
PmDE2000 0.64
Hipparcos
Catalog H HIP 14879 Proxy H RAhms 03 12 04.28
DEdms -28 59 20.8 Vmag 3.8 VarFlag R Vmag G
RAdeg 48.0178 DEdeg -28.9891 AstroRef A Plx 70.86
CCDM 03121-2859 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 298 Rho 4.461 HD 20010 BD
CD CD-29 1177 CP CP-29 362 Dm number -29 1177 VIred 0.63
SpType F8V R SpType Coord arcsec 2000 031204.28-285920.8
Hipparcos 2
HIP 14879 Sn 15 So 3 Nc 2
RArad 0.8380692937 DErad -0.5059553529 Plx 70.24 PmRA 370.87
PmDE 611.33 E RArad 0.26 E DErad 0.29 E Plx 0.45
E pmRA 0.3 E pmDE 0.42 Hpmag 3.9821 E Hpmag 0.0005
SHp 0.007 VA 0 BV 0.543 E BV 0.015
VI 0.63
CCDM
Ccdm 03121-2859 RComp Comp A Note1
Note2 Discov num DRAs -1.73 DDEs -13.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.0 Sp F8 PmNote *
PmRA 337 PmDE 644 Dm number -29 1177 Cat1 CD
Name2 168373 Cat2 SAO HD 20010 M HD
ADS BDS A 2402 M ADS BDS N IDS IDS 03078S2923A
HIC 14879
 
 
03121-2859 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 031204.22-285912.6 Mag 7.19 PmRA 346.00
PmDE 648.0 Calc delta mag 3.21 Calc coord yes
CCDM
Ccdm 03121-2859 RComp Comp B Note1 *
Note2 Discov num HJ 3555 DRAs DDEs
R dRAs Year 1836 Theta Rho
Obs 99 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2402 M ADS BDS N N IDS IDS 03078S2923B
HIC 14879