03236-4005 I 468 (HD 21175)

 
 
03h 23m 35.23s -40° 04' 35.4" P.A. 127.00 sep 2.8 mag 6.80,11.00 Sp K0V dist. 17.42 pc (56.82 l.y.)
 
 
Coord 2000 03236-4005 Discov num I   468 Comp Coord arcsec 2000 03 23 35.23 -40 04 35.4
Date first 1909 Date last 2021 Obs 24
Pa first 210 Pa last 127.1 P.A. Now (θ) 127.1°
Sep first 2.0 Sep last 2.849 Sep. Now (ρ) 2.849"
Mag pri 6.80 Mag sec 11.00 delta mag (ΔM) 4.2 Spectral class K0V (yellow-orange)
Pri motion ra +073 Sec motion ra
Pri motion dec -026 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 21175 Constellation Eridanus SAO 216292 HIP 15799
Tycho2 7571-00425-1 Gaia DR2 4852870701504645376 HD 21175 GC 4061
GL NN 3222A CD CD-40 898 CP CP-40 310 Distance 17.42
Distance ly 56.82
 
 
ORBITAL ELEMENTS
 
 
Period (P)217.702y± 31.3008 Periastron (T)1970.7215y± 1.4622 Semi-major axis (a)2.32852a± 0.10837
Eccentricity (e)0.48485± 0.06404 Inclination (i)41.816°± 3.627 Longitude of periastron (ω)230.607°± 13.28
Node (Ω)121.616°± 11.983 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 103.2 1.964
2001 104.6 2.010
2002 106.0 2.055
2003 107.4 2.098
2004 108.7 2.140
2005 110.0 2.182
2006 111.2 2.222
2007 112.3 2.261
2008 113.5 2.299
2009 114.5 2.336
2010 115.6 2.371
2011 116.6 2.406
2012 117.6 2.440
2013 118.6 2.472
2014 119.5 2.504
2015 120.4 2.534
2016 121.3 2.564
2017 122.2 2.593
2018 123.1 2.620
2019 123.9 2.647
2020 124.8 2.673
2021 125.6 2.698
2022 126.4 2.721
2023 127.1 2.744
2024 127.9 2.767
2025 128.7 2.788
2026 129.4 2.808
2027 130.2 2.828
2028 130.9 2.847
2029 131.6 2.865
2030 132.3 2.882


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



 
 


wds03236-4005c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 03236-4005 I 468 (HD 21175) : NOTES
 
 
discov_num notes refcode
I 468 glimpsed? I__1948a
Soderhjelm (1999) gives possible orbit from two widely spaced visual Sod1999
observations + Hipparcos data.
 
 
REFERENCES
 
 
refcode metd author reference
I__1948a Ma - Innes, R.T.A. 1948CiUO..106..193I
I__1948a +Po Union Obs. Johannesburg Circ. 106, 193, 1948
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.)
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
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
03236-4005 I 468 1965 3 325 1.3 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2008 4 113 2.3 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2010 5 116 2.4 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2015 8 121 2.6 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2017 11 124 2.7 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2018 13 125 2.7 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2019 17 126 2.8 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2020 19 126 2.8 6.80 11.00 K0V NO 032335.23-400435.4
03236-4005 I 468 2021 24 127 2.8 6.80 11.00 K0V NO 032335.23-400435.4

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

 
 
WDS 03236-4005 I 468 (HD 21175) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03236-4005 I 468 (HD 21175) : MEASURES
 
 
No records found.

 
 
WDS 03236-4005 (HD 21175) : VIRTUAL EYEPIECE
 
 

03236-4005 I   468A mag 6.8 Sp K0V 03236-4005 I   468B sep 2.4 P.A. 134.70 mag 11 virtual eyepiece
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Radius:
Components only
 
 
WDS 03236-4005 (HD 21175) : ALADIN DSS IMAGE @ 03h 23m 35.23s -40° 04' 35.4"
 
 
 
 
WDS 03236-4005 I 468 (HD 21175) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


03236-4005  I   468 distance=1' 03233-4027  TOI2335AB distance=23' 03218-4045  TDS2529 distance=45' 03285-4009  WG   19 distance=58' 03177-4020  I   467 distance=69' 03270-3901  TDS2550 distance=75' 03223-4119  I   151 distance=76' 03257-4120  I  1484 distance=79' 03274-4113  TOK 819 distance=81' 03285-4112  NSN 200 distance=88' 03221-4131  I  1483 distance=89' 03313-3951  KPP2825 distance=90' 03224-3832  TDS2532 distance=94' 03227-3828  B  1448 distance=98' 03317-4041  UC 1018 distance=100' 03209-4142  UC  989 distance=103' 03271-3827  SHN  79 distance=106' 03261-3822  B  1450 distance=107' 03317-4100  UC 1019 distance=109' 03256-3819  HDS 429 distance=109' 03331-4040  TDS2575 distance=115' 03252-3807  UC 1004 distance=119' 03182-3823  HDS 415 distance=120' 03145-4130  TDS 107 distance=134' 03353-4020  TSN 111 distance=135' 03271-3753  COO  19 distance=138' 03139-3840  WG   18AB distance=142' 03107-4023  LDS9144 distance=148' 03301-4220  DON1062 distance=154' 03286-3742  TDS2556 distance=155' 03371-4054  B  1454 distance=162' 03186-4239  I    56 distance=164' 03168-4232  I   466AB distance=166' 03168-4232  I   466AC distance=166' 03161-3742  KIR   9 distance=168' 03299-4238  EHR   4 distance=170' 03128-3807  B  1445 distance=172' 03161-3736  TDS2508 distance=173' 03383-3911  UC 1036 distance=179' 03093-4123  DAM1297 distance=181' 03153-4243  I   463 distance=184' 03398-4022  DUN  15 distance=186' 03087-4122  I    54 distance=187' 03128-4226  DON  47 distance=187' 03249-4313  CBL 121 distance=189' 03139-4244  TDS2488 distance=194' 03408-4010  NSN 201 distance=198' 03169-4313  RST5199 distance=203' 03412-4046  ARY  90AB distance=205' 03412-4046  SKF2462AC distance=205' 03404-3849  KPP3536 distance=209' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 03236-4005 I 468 127 2.8 1
Show 03233-4027 TOI2335 AB 55 3.8 23
Show 03218-4045 TDS2529 167 0.5 45
Show 03285-4009 WG 19 354 6.3 58
Show 03177-4020 I 467 122 2.4 69
Show 03270-3901 TDS2550 184 1.0 75
Show 03223-4119 I 151 191 0.8 76
Show 03257-4120 I 1484 308 3.1 79
Show 03274-4113 TOK 819 269 0.1 81
Show 03285-4112 NSN 200 264 5.0 88
Show 03221-4131 I 1483 39 2.3 89
Show 03313-3951 KPP2825 94 0.9 90
Show 03224-3832 TDS2532 283 0.4 94
Show 03227-3828 B 1448 249 3.6 98
Show 03317-4041 UC 1018 19 16.7 100
Show 03209-4142 UC 989 212 8.0 103
Show 03271-3827 SHN 79 98 1.2 106
Show 03261-3822 B 1450 186 1.9 107
Show 03317-4100 UC 1019 11 51.6 109
Show 03256-3819 HDS 429 230 0.3 109
Show 03331-4040 TDS2575 98 1.1 115
Show 03252-3807 UC 1004 305 28.2 119
Show 03182-3823 HDS 415 313 0.5 120
Show 03145-4130 TDS 107 26 1.2 134
Show 03353-4020 TSN 111 122 999.9 135
Show 03271-3753 COO 19 311 12.8 138
Show 03139-3840 WG 18 AB 105 4.3 142
Show 03107-4023 LDS9144 178 56.4 148
Show 03301-4220 DON1062 147 4.7 154
Show 03286-3742 TDS2556 20 0.6 155
Show 03371-4054 B 1454 333 1.6 162
Show 03186-4239 I 56 257 3.9 164
Show 03168-4232 I 466 AB 347 1.2 166
Show 03168-4232 I 466 AC 143 31.3 166
Show 03161-3742 KIR 9 229 26.2 168
Show 03299-4238 EHR 4 301 5.2 170
Show 03128-3807 B 1445 311 0.8 172
Show 03161-3736 TDS2508 206 1.0 173
Show 03383-3911 UC 1036 208 24.9 179
Show 03093-4123 DAM1297 230 2.6 181
Show 03153-4243 I 463 125 0.6 184
Show 03398-4022 DUN 15 327 7.5 186
Show 03087-4122 I 54 134 0.9 187
Show 03128-4226 DON 47 294 0.7 187
Show 03249-4313 CBL 121 192 26.7 189
Show 03139-4244 TDS2488 239 0.7 194
Show 03408-4010 NSN 201 256 1.1 198
Show 03169-4313 RST5199 59 0.5 203
Show 03412-4046 ARY 90 AB 294 78.2 205
Show 03412-4046 SKF2462 AC 196 13.0 205
Show 03404-3849 KPP3536 131 1.8 209

 
 
WDS 03236-4005 : COMPONENTS
 
 
  A
B pa=134.7°
sep=2.44"
 
 
03236-4005 A
 
 
Componente originario normalizzato AB Name HD 21175 Coord arcsec 2000 032335.23-400435.4 Mag 6.8
Spectral class K0V (yellow-orange) PmRA 73.00 PmDE -26.0 SAO 216292
HIP 15799 Tycho2 7571-00425-1 HD 21175 GC 4061
CD CD-40 898 CP CP-40 310
Tycho2
Tycho2 7571-00425-1 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 7.999 E BTmag 0.016 VTmag 7.010
E VTmag 0.010 Prox 999 TYC T HIP 15799
CCDM RAdeg 50.89679667 DEdeg -40.07648556 EpRA 1990 1.62
EpDE 1990 1.70 E RAdeg 4.2 E DEdeg 4.0 Posflg
Corr 0.0
SAO
SAO 216292 DelFlag RA1950 PmRA1950 0.0088
DE1950 PmDE1950 0.003 Vmag 6.8 SpType G0
Double code Source 70 CatNum 4061 DM CD-40 898
DMcomp BDsup HD 21175 M HD 0
GC 4061 RA1950rad 0.88030581 DE1950rad -0.70254174 PmRA2000 0.0094
PmDE2000 -0.001
Hipparcos
Catalog H HIP 15799 Proxy RAhms 03 23 35.23
DEdms -40 04 35.4 Vmag 6.9 VarFlag R Vmag G
RAdeg 50.8968 DEdeg -40.0765 AstroRef Plx 58.53
CCDM 03236-4005 N CCDM I Nsys 1 Ncomp 1
MultFlag X Source Qual S M HIP
Theta Rho HD 21175 BD
CD CD-40 898 CP CP-40 310 Dm number -40 898 VIred 0.86
SpType K0V R SpType Coord arcsec 2000 032335.23-400435.4
Hipparcos 2
HIP 15799 Sn 1 So 2 Nc 1
RArad 0.8883166143 DErad -0.6994667351 Plx 57.4 PmRA 40.76
PmDE 43.06 E RArad 0.48 E DErad 0.5 E Plx 0.67
E pmRA 0.61 E pmDE 0.62 Hpmag 7.0457 E Hpmag 0.0009
SHp 0.009 VA 0 BV 0.84 E BV 0.01
VI 0.88
CCDM
Ccdm 03236-4005 RComp Comp A Note1
Note2 Discov num DRAs -0.57 DDEs 23.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.8 Sp G0 PmNote *
PmRA 75 PmDE -13 Dm number -40 898 Cat1 CD
Name2 216292 Cat2 SAO HD 21175 M HD
ADS BDS M ADS BDS N IDS IDS 03199S4026A
HIC 15799
 
 
03236-4005 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 032335.38-400437.1 Mag 11 Calc delta mag 4.2
Calc coord yes
CCDM
Ccdm 03236-4005 RComp Comp B Note1
Note2 Discov num I 468 DRAs DDEs
R dRAs Year 1927 Theta 221 Rho 2.1
Obs 1 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 03199S4026B
HIC 15799