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Doubles in session


Current system
04188-3407
I 724
HD 27470


Nearby doubles
14' : 04190-3354
HJ 3642AB

23' : 04179-3348
HUB 3AB

29' : 04178-3341
RST2343

34' : 04184-3440
TDS2816

35' : 04190-3333
KPP3564

41' : 04220-3357
TDS2836

55' : 04162-3324
KPP3561

63' : 04230-3442
AOT 11

63' : 04196-3309
JSP 860

77' : 04209-3520
AOT 10

79' : 04249-3346
ALD 24AB

83' : 04243-3453
AOT 12

85' : 04126-3331
TDS2786

86' : 04249-3445
I 59AB

88' : 04120-3346
HJ 3627

94' : 04255-3452
KPP3568

98' : 04178-3231
TVB 68

99' : 04262-3442
PRO 243

101' : 04211-3543
KPP 989

101' : 04231-3533
I 384

105' : 04216-3229
BRT1588

108' : 04210-3551
KPP2828

112' : 04177-3558
RST2342AB

116' : 04277-3334
I 725

116' : 04176-3602
UC 1148

121' : 04279-3325
UC 1169AB



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.

04188-3407 I 724 (HD 27470)

 
 
04h 18m 47.63s -34° 07' 16.7" P.A. 224.00 sep 0.1 mag 8.30,9.30 Sp G1V dist. 257.07 pc (838.56 l.y.)
 
 
Coord 2000 04188-3407 Discov num I   724 Comp Coord arcsec 2000 04 18 47.63 -34 07 16.7
Date first 1910 Date last 2021 Obs 12
Pa first 200 Pa last 223.5 P.A. Now (θ) 223.5°
Sep first 0.5 Sep last 0.113 Sep. Now (ρ) 0.113"
Mag pri 8.30 Mag sec 9.30 delta mag (ΔM) 1 Spectral class G1V (yellow)
Pri motion ra +021 Sec motion ra
Pri motion dec +021 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 27470 Constellation Eridanus SAO 194919 HIP 20116
Tycho2 7040-01357-1 Gaia DR2 4870503947436774400 HD 27470 GC 5222
CD CD-34 1622 CP CP-34 469 Distance 257.07 Distance ly 838.56
 
 
ORBITAL ELEMENTS
 
 
Period (P)180y Periastron (T)1978.86y Semi-major axis (a)0.408a
Eccentricity (e)0.79 Inclination (i)93.7° Longitude of periastron (ω)121.6°
Node (Ω)203.9° Notes ReferenceTok2021f
Equinox Last observation2021 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 358.6 0.059
2001 354.4 0.053
2002 349.0 0.047
2003 342.2 0.041
2004 333.5 0.037
2005 322.5 0.033
2006 309.3 0.031
2007 294.9 0.030
2008 281.0 0.032
2009 268.9 0.035
2010 259.1 0.039
2011 251.4 0.044
2012 245.4 0.050
2013 240.7 0.056
2014 236.9 0.062
2015 233.9 0.069
2016 231.3 0.076
2017 229.2 0.083
2018 227.5 0.089
2019 225.9 0.096
2020 224.6 0.103
2021 223.4 0.110
2022 222.4 0.117
2023 221.5 0.124
2024 220.7 0.131
2025 220.0 0.138
2026 219.3 0.145
2027 218.7 0.151
2028 218.2 0.158
2029 217.7 0.165
2030 217.2 0.172


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


 
  


wds04188-3407a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 04188-3407 I 724 (HD 27470) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2021f orb - Tokovinin, A. 2021IAUDS.204....1T
Tok2021f Inf. Circ. 204, 1, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 I Innes, R.T.A.
5 I MNRAS 57, 533, 1897 (data also in I__1897b,
5 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04188-3407 I 724 1993 9 193 0.1 8.30 9.30 G1V 041847.63-340716.7
04188-3407 I 724 2017 10 228 0.1 8.30 9.30 G1V 041847.63-340716.7
04188-3407 I 724 2018 11 228 0.1 8.30 9.30 G1V 041847.63-340716.7
04188-3407 I 724 2021 12 224 0.1 8.30 9.30 G1V 041847.63-340716.7

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

 
 
WDS 04188-3407 I 724 (HD 27470) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04188-3407 I 724 (HD 27470) : MEASURES
 
 
No records found.

 
 
WDS 04188-3407 (HD 27470) : VIRTUAL EYEPIECE
 
 

04188-3407 I 724A mag 8.3 Sp G1V 04188-3407 I 724B sep 0.1 P.A. 218.20 mag 9.3 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 04188-3407 (HD 27470) : ALADIN DSS IMAGE @ 04h 18m 47.63s -34° 07' 16.7"
 
 
 
 
WDS 04188-3407 I 724 (HD 27470) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04188-3407 I 724 distance=0' 04190-3354 HJ 3642AB distance=14' 04179-3348 I 270Aa,Ab distance=23' 04179-3348 HUB 3AB distance=23' 04179-3348 HJ 3636AC distance=23' 04179-3348 HMM 2Aa1,2 distance=23' 04178-3341 RST2343 distance=29' 04184-3440 TDS2816 distance=34' 04190-3333 KPP3564 distance=35' 04220-3357 TDS2836 distance=41' 04162-3324 KPP3561 distance=55' 04230-3442 AOT 11 distance=63' 04196-3309 JSP 860 distance=63' 04209-3520 AOT 10 distance=77' 04249-3346 ALD 24AB distance=79' 04249-3346 AOT 127AB,C distance=79' 04243-3453 AOT 12 distance=83' 04126-3331 TDS2786 distance=85' 04249-3445 I 59AB distance=86' 04249-3445 DAM1313Aa,Ab distance=86' 04249-3445 DAM1313AD distance=86' 04249-3445 I 59BC distance=86' 04120-3346 HJ 3627 distance=88' 04255-3452 KPP3568 distance=94' 04178-3231 TVB 68 distance=98' 04262-3442 PRO 243 distance=99' 04211-3543 KPP 989 distance=101' 04231-3533 I 384 distance=101' 04216-3229 BRT1588 distance=105' 04210-3551 KPP2828 distance=108' 04177-3558 RST2342AB distance=112' 04177-3558 SKF1286AB,C distance=112' 04277-3334 I 725 distance=116' 04176-3602 UC 1148 distance=116' 04279-3325 UC 1169AB distance=121' 04111-3252 UC 1128AC distance=122' 04172-3206 UC 1146 distance=124' 04282-3325 TDS2859 distance=126' 04085-3407 UC 1122 distance=128' 04287-3325 I 726 distance=131' 04219-3614 TDS2835 distance=133' 04159-3159 HDS 542 distance=133' 04136-3604 UC 1135 distance=134' 04294-3335 HJ 3652 distance=137' 04301-3402 WFC 26 distance=141' 04123-3605 NSN 204 distance=143' 04127-3206 JSP 53 distance=144' 04232-3620 HDS 563AB distance=144' 04125-3609 HJ 3628 distance=145' 04278-3238 JSP 57 distance=145' 04141-3155 TS 1 distance=145' 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 04188-3407 I 724 224 0.1
Show 04190-3354 HJ 3642 AB 157 5.2 14
Show 04179-3348 I 270 Aa,Ab 343 0.1 23
Show 04179-3348 HUB 3 AB 163 5.5 23
Show 04179-3348 HJ 3636 AC 8 49.0 23
Show 04179-3348 HMM 2 Aa1,2 33 0.0 23
Show 04178-3341 RST2343 206 0.2 29
Show 04184-3440 TDS2816 196 0.7 34
Show 04190-3333 KPP3564 249 1.3 35
Show 04220-3357 TDS2836 156 0.6 41
Show 04162-3324 KPP3561 49 2.0 55
Show 04230-3442 AOT 11 55 8.1 63
Show 04196-3309 JSP 860 322 6.7 63
Show 04209-3520 AOT 10 232 13.9 77
Show 04249-3346 ALD 24 AB 319 1.5 79
Show 04249-3346 AOT 127 AB,C 89 6.2 79
Show 04243-3453 AOT 12 292 11.3 83
Show 04126-3331 TDS2786 164 0.6 85
Show 04249-3445 I 59 AB 201 30.0 86
Show 04249-3445 DAM1313 Aa,Ab 119 0.1 86
Show 04249-3445 DAM1313 AD 68 5.8 86
Show 04249-3445 I 59 BC 281 3.7 86
Show 04120-3346 HJ 3627 277 25.7 88
Show 04255-3452 KPP3568 22 3.2 94
Show 04178-3231 TVB 68 9 7.2 98
Show 04262-3442 PRO 243 148 2.4 99
Show 04211-3543 KPP 989 293 8.0 101
Show 04231-3533 I 384 188 18.4 101
Show 04216-3229 BRT1588 311 5.4 105
Show 04210-3551 KPP2828 355 19.0 108
Show 04177-3558 RST2342 AB 290 1.2 112
Show 04177-3558 SKF1286 AB,C 62 24.9 112
Show 04277-3334 I 725 241 3.6 116
Show 04176-3602 UC 1148 26 63.3 116
Show 04279-3325 UC 1169 AB 71 68.7 121
Show 04111-3252 UC 1128 AC 266 44.4 122
Show 04172-3206 UC 1146 328 15.6 124
Show 04282-3325 TDS2859 48 1.0 126
Show 04085-3407 UC 1122 23 30.6 128
Show 04287-3325 I 726 213 2.8 131
Show 04219-3614 TDS2835 177 0.6 133
Show 04159-3159 HDS 542 181 0.9 133
Show 04136-3604 UC 1135 52 13.4 134
Show 04294-3335 HJ 3652 117 10.0 137
Show 04301-3402 WFC 26 113 5.6 141
Show 04123-3605 NSN 204 241 6.4 143
Show 04127-3206 JSP 53 18 0.5 144
Show 04232-3620 HDS 563 AB 121 0.2 144
Show 04125-3609 HJ 3628 50 49.7 145
Show 04278-3238 JSP 57 194 2.3 145
Show 04141-3155 TS 1 258 0.4 145

 
 
WDS 04188-3407 : COMPONENTS
 
 
  A
B pa=218.2°
sep=0.10"
 
 
04188-3407 A
 
 
Componente originario normalizzato AB Name HD 27470 Coord arcsec 2000 041847.63-340716.7 Mag 8.3
Spectral class G1V (yellow) PmRA 21.00 PmDE 21.0 SAO 194919
HIP 20116 Tycho2 7040-01357-1 HD 27470 GC 5222
CD CD-34 1622 CP CP-34 469
Tycho2
Tycho2 7040-01357-1 Pflag RAmdeg 64.69852730 DEmdeg -34.12123519
PmRA 19.9 PmDE 22.9 E RAmdeg 6 E DEmdeg 5
E pmRA 1.2 E pmDE 1.2 EpRAm 1990.78 EpDEm 1991.08
Num 15 Q RAmdeg 1.5 Q DEmdeg 1.4 Q pmRA 1.6
Q pmDE 1.5 BTmag 8.720 E BTmag 0.016 VTmag 7.943
E VTmag 0.011 Prox 999 TYC T HIP 20116
CCDM RAdeg 64.69847083 DEdeg -34.12128889 EpRA 1990 1.54
EpDE 1990 1.60 E RAdeg 5.6 E DEdeg 5.1 Posflg
Corr 0.1
SAO
SAO 194919 DelFlag RA1950 PmRA1950 0.0006
DE1950 PmDE1950 0.006 Vmag 7.9 SpType G0
Double code Source 70 CatNum 5222 DM CD-34 1622
DMcomp BDsup HD 27470 M HD 0
GC 5222 RA1950rad 1.12099044 DE1950rad -0.59763297 PmRA2000 0.0011
PmDE2000 0.004
Hipparcos
Catalog H HIP 20116 Proxy RAhms 04 18 47.63
DEdms -34 07 16.7 Vmag 7.86 VarFlag R Vmag H
RAdeg 64.6985 DEdeg -34.1213 AstroRef Plx 3.65
CCDM 04188-3407 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 27470 BD
CD CD-34 1622 CP CP-34 469 Dm number -34 1622 VIred 0.77
SpType G1V R SpType Coord arcsec 2000 041847.63-340716.7
Hipparcos 2
HIP 20116 Sn 5 So 0 Nc 1
RArad 1.1292013183 DErad -0.595528889 Plx 3.89 PmRA 21.01
PmDE 20.12 E RArad 0.37 E DErad 0.49 E Plx 0.56
E pmRA 0.46 E pmDE 0.64 Hpmag 7.9979 E Hpmag 0.0016
SHp 0.015 VA 0 BV 0.714 E BV 0.015
VI 0.77
CCDM
Ccdm 04188-3407 RComp Comp A Note1
Note2 Discov num DRAs -0.31 DDEs -17.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp G0 PmNote *
PmRA 25 PmDE 16 Dm number -34 1622 Cat1 CD
Name2 194919 Cat2 SAO HD 27470 M HD
ADS BDS M ADS BDS N IDS IDS 04150S3422A
HIC 20116
 
 
04188-3407 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 041847.62-340716.8 Mag 9.3 Calc delta mag 1
Calc coord yes
CCDM
Ccdm 04188-3407 RComp Comp B Note1
Note2 Discov num I 724 DRAs DDEs
R dRAs Year 1927 Theta 206 Rho 0.5
Obs 3 Vmag 9.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 04150S3422B
HIC 20116