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Doubles in session


Current system
08468+0625
STF 1273 AB,C
Eps Hya


Nearby doubles
17' : 08478+0619
SKF 726

25' : 08484+0629
KAM 2

32' : 08459+0655
SKF 507

43' : 08484+0550
AGC 3

46' : 08456+0707
UC 1710

46' : 08497+0637
ROE 33

49' : 08435+0616
GRV 765

53' : 08497+0655
SKF1710

56' : 08502+0647
HEI 744

58' : 08476+0722
GWP1084

68' : 08426+0653
SLE 472AB

71' : 08449+0730
SLW 288

78' : 08442+0732
TDS6065

79' : 08515+0700
GRV 773

80' : 08462+0744
LDS3817

82' : 08415+0604
SKF 714

83' : 08415+0649
A 2963

84' : 08461+0748
J 735

89' : 08439+0508
A 2751

94' : 08524+0707
BRT2144

95' : 08516+0525
CVR 513

95' : 08408+0656
SKF 709

99' : 08466+0803
GRV 769

101' : 08440+0453
A 2898

105' : 08507+0752
VDK 3

107' : 08524+0520
A 2900



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.

08468+0625 STF 1273 AB,C (Eps Hya)

 
 
08h 46m 46.51s +06° 25' 07.7" P.A. 313.00 sep 2.7 mag 3.49,6.66 Sp +F7V dist. 39.64 pc (129.31 l.y.)
 
 
Coord 2000 08468+0625 Discov num STF1273 Comp AB,C Coord arcsec 2000 08 46 46.51 +06 25 07.7
Date first 1825 Date last 2022 Obs 444
Pa first 192 Pa last 312.8 P.A. Now (θ) 315.5° (calc)
Sep first 3.3 Sep last 2.68 Sep. Now (ρ) 2.669" (calc)
Mag pri 3.49 Mag sec 6.66 delta mag (ΔM) 3.17 Spectral class +F7V
Pri motion ra -228 Sec motion ra -182
Pri motion dec -044 Sec motion dec -025
Notes N O (See Notes, Orbital solution)
rPM=0.214 (< 0.3, Physical double)
This double is physical.
 
 
08468+0625 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Ashlesha 117112 08 46 47 +06 25 08 SP 1 AB 2023 276 126 0.2 3.50 5.60 2.10 Y
Show Eps Hya 117112 08 46 47 +06 25 08 STF 1273 AB,C 2022 444 313 2.7 3.49 6.66 3.17 Y <===
Show 117112 08 46 47 +06 25 08 STF 1273 AB,D 2017 23 201 18.1 3.49 12.50 9.01
Show 117112 08 46 47 +06 25 08 STF 1273 AB,E 2015 8 2 340.5 3.49 10.78 7.29
Show 117112 08 46 47 +06 25 08 STF 1273 AB,F 2015 9 265 406.5 3.49 10.39 6.90
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Eps Hya Constellation Hydra SAO 117112 HIP 43109
Tycho2 0224-01333-1 Gaia DR2 583151353573508096 HD 74874 HR 3482
GC 12102 ADS 6993 BD BD+06 2036 Bayer Epsilon Hydrae
Bayer name Eps Hya Flamsteed 11 Hydrae Flamsteed name 11 Hya Distance 39.64
Distance ly 129.31 Bayer greek ε Hya
 
 
ORBITAL ELEMENTS
 
 
Period (P)371.8983y± 149.7614 Periastron (T)2085.92y± 28.4939 Semi-major axis (a)3.09562a± 0.24144
Eccentricity (e)0.47195± 0.31777 Inclination (i)46.879°± 22.251 Longitude of periastron (ω)256.87°± 24.989
Node (Ω)162.512°± 10.57 Notesn ReferenceIzm2019
Equinox Last observation2014 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 296.4 2.826
2001 297.1 2.822
2002 297.8 2.818
2003 298.5 2.814
2004 299.2 2.810
2005 299.9 2.805
2006 300.6 2.801
2007 301.3 2.796
2008 302.1 2.792
2009 302.8 2.787
2010 303.5 2.782
2011 304.2 2.777
2012 304.9 2.771
2013 305.7 2.766
2014 306.4 2.760
2015 307.1 2.754
2016 307.9 2.747
2017 308.6 2.741
2018 309.4 2.734
2019 310.1 2.727
2020 310.9 2.720
2021 311.6 2.712
2022 312.4 2.704
2023 313.2 2.696
2024 313.9 2.687
2025 314.7 2.678
2026 315.5 2.669
2027 316.3 2.659
2028 317.1 2.650
2029 317.9 2.639
2030 318.7 2.628
2031 319.5 2.617
2032 320.3 2.605
2033 321.1 2.593
2034 322.0 2.581
2035 322.8 2.568
2036 323.7 2.554
2037 324.5 2.540
2038 325.4 2.525
2039 326.3 2.510
2040 327.2 2.494
2041 328.1 2.478
2042 329.0 2.461
2043 329.9 2.443
2044 330.9 2.425
2045 331.8 2.406
2046 332.8 2.386
2047 333.8 2.366
2048 334.8 2.345
2049 335.8 2.323
2050 336.9 2.300


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds08468%2B0625d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 08468+0625 STF 1273 AB,C (Eps Hya) : NOTES
 
 
discov_num notes refcode
SP 1 eps Hya = 11 Hya. Variable. Dan1952
The elements for AB are combined visual-spectroscopic. Hei1963c
A secondary radial velocity variation with a period of about 70d
was suspected by Underhill (Pub. DAO Victoria 12, 161, 1963) Fin1970b
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
STF1273 C is SB1, P = 9.905 d.
AB,C triple solution ((AB)-C in HIP). Sod1999
Star D is in slow direct motion, hence quintuple.
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Dan1952 Mc - Danjon, A. 1952JO.....35...85D
Dan1952 J. Obs. 35, 85, 1952
Fin1970b - Finsen, W.S. & Worley, C.E. 1970ROCi..130..203F
Fin1970b Republic Obs. Circ. 130, 203, 1970 (Third Orbit Catalog)
Hei1963c orb - Heintz, W.D. 1963ZA.....57..159H
Hei1963c ZfAp 57, 159, 1963
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019
Izm2019
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
DISCOVERER
 
 
discov author
BAZ Baize, P.
IZM Izmailov, I.S., Khovricheva, M.L., Khovrichev, M. Yu., Kiyaeva, O.V., Khrutskaya,
IZM E.V., Romanenko, L.G., Grosheva, E.A., Maslennikov, K.L. & Kalinichenko, O.A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
08468+0625 STF1273 AB,C 2009 417 305 2.8 3.49 6.66 F8V NOD 084646.65+062508.1
08468+0625 STF1273 AB,C 2010 420 303 2.8 3.49 6.66 F8V NOD 084646.65+062508.1
08468+0625 STF1273 AB,C 2012 422 305 2.8 3.49 6.66 F8V NOD 084646.65+062508.1
08468+0625 STF1273 AB,C 2014 428 308 2.9 3.49 6.66 F8V NOD 084646.65+062508.1
08468+0625 STF1273 AB,C 2016 431 308 2.8 3.49 6.66 F8V NO 084646.51+062507.7
08468+0625 STF1273 AB,C 2017 432 309 2.9 3.49 6.66 F8V NO 084646.51+062507.7
08468+0625 STF1273 AB,C 2020 440 311 2.9 3.49 6.66 F8V NO 084646.51+062507.7
08468+0625 STF1273 AB,C 2022 444 313 2.7 3.49 6.66 +F7V NO 084646.51+062507.7

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

 
 
WDS 08468+0625 STF 1273 AB,C (Eps Hya) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08468+0625 STF 1273 AB,C (Eps Hya) : MEASURES
 
 
No records found.

 
 
WDS 08468+0625 (Eps Hya) : VIRTUAL EYEPIECE
 
 

08468+0625 SP 1A mag 3.5 Sp G1III 08468+0625 SP 1B sep 0.2 P.A. 126.20 mag 5.6 Sp A8V 08468+0625 STF1273C sep 2.7 P.A. 312.80 mag 6.66 Sp F7V 08468+0625 STF1273D sep 18.1 P.A. 200.60 mag 12.5 08468+0625 STF1273E sep 340.5 P.A. 2.00 mag 10.78 08468+0625 STF1273F sep 406.5 P.A. 265.30 mag 10.39 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 08468+0625 (Eps Hya) : ALADIN DSS IMAGE @ 08h 46m 46.51s +06° 25' 07.7"
 
 
 
 
WDS 08468+0625 STF 1273 AB,C (Eps Hya) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08468+0625 STF1273AB,C distance=0' 08478+0619 SKF 726 distance=17' 08484+0629 KAM 2 distance=25' 08459+0655 SKF 507 distance=32' 08484+0550 AGC 3 distance=43' 08456+0707 UC 1710 distance=46' 08497+0637 ROE 33 distance=46' 08435+0616 GRV 765 distance=49' 08497+0655 SKF1710 distance=53' 08502+0647 HEI 744 distance=56' 08476+0722 GWP1084 distance=58' 08426+0653 SLE 472BC distance=68' 08426+0653 SLE 472AB distance=68' 08426+0653 SLE 472AD distance=68' 08426+0653 SLE 472AC distance=68' 08449+0730 SLW 288 distance=71' 08442+0732 TDS6065 distance=78' 08515+0700 GRV 773 distance=79' 08462+0744 LDS3817 distance=80' 08415+0604 SKF 714 distance=82' 08415+0649 A 2963 distance=83' 08461+0748 J 735 distance=84' 08439+0508 A 2751 distance=89' 08524+0707 BRT2144 distance=94' 08516+0525 CVR 513 distance=95' 08408+0656 SKF 709 distance=95' 08466+0803 GRV 769 distance=99' 08440+0453 A 2898 distance=101' 08507+0752 VDK 3 distance=105' 08524+0520 A 2900 distance=107' 08474+0812 GWP1083 distance=108' 08454+0812 GWP1077 distance=110' 08440+0808 BRT2602 distance=112' 08397+0546 STF1255BC distance=112' 08397+0546 STF1255BD distance=112' 08397+0546 STF1255AB distance=113' 08480+0820 SKF 727 distance=116' 08436+0812 DAM1476 distance=117' 08441+0816 SKF 499 distance=117' 08410+0745 SKF 711 distance=118' 08443+0431 SKF 500 distance=120' 08387+0637 UC 1696 distance=122' 08501+0818 BOW 2 distance=123' 08534+0513 A 2752 distance=124' 08465+0419 STF1267 distance=127' 08460+0833 KPP1972 distance=129' 08523+0804 TOK 22 distance=129' 08440+0424 BAL2822 distance=129' 08380+0624 A 2962 distance=132' 08392+0734 HDS1244 distance=133' 08512+0820 PER 1 distance=133' 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 Ashlesha 08468+0625 SP 1 AB 126 0.2 0
Show 08468+0625 STF1273 AB,C 313 2.7 0
Show 08468+0625 STF1273 AB,D 201 18.1 0
Show 08468+0625 STF1273 AB,E 2 340.5 0
Show 08468+0625 STF1273 AB,F 265 406.5 0
Show 08478+0619 SKF 726 213 1.4 17
Show 08484+0629 KAM 2 177 2.6 25
Show 08459+0655 SKF 507 299 1.0 32
Show 08484+0550 AGC 3 147 12.2 43
Show 08456+0707 UC 1710 91 6.1 46
Show 08497+0637 ROE 33 261 5.0 46
Show 08435+0616 GRV 765 107 28.9 49
Show 08497+0655 SKF1710 48 1.6 53
Show 08502+0647 HEI 744 174 0.3 56
Show 08476+0722 GWP1084 80 230.8 58
Show 08426+0653 SLE 472 BC 105 38.7 68
Show 08426+0653 SLE 472 AB 150 28.8 68
Show 08426+0653 SLE 472 AD 272 54.0 68
Show 08426+0653 SLE 472 AC 124 62.3 68
Show 08449+0730 SLW 288 68 34.9 71
Show 08442+0732 TDS6065 104 1.7 78
Show 08515+0700 GRV 773 140 19.8 79
Show 08462+0744 LDS3817 3 47.8 80
Show 08415+0604 SKF 714 166 0.8 82
Show 08415+0649 A 2963 264 3.2 83
Show 08461+0748 J 735 340 2.8 84
Show 08439+0508 A 2751 13 1.5 89
Show 08524+0707 BRT2144 14 8.9 94
Show 08516+0525 CVR 513 229 20.7 95
Show 08408+0656 SKF 709 20 1.2 95
Show 08466+0803 GRV 769 153 18.3 99
Show 08440+0453 A 2898 76 1.7 101
Show 08507+0752 VDK 3 218 0.9 105
Show 08524+0520 A 2900 314 0.7 107
Show 08474+0812 GWP1083 245 15.2 108
Show 08454+0812 GWP1077 346 14.3 110
Show 08440+0808 BRT2602 162 3.5 112
Show 08397+0546 STF1255 BC 357 69.6 112
Show 08397+0546 STF1255 BD 22 71.5 112
Show 08397+0546 STF1255 AB 31 25.9 113
Show 08480+0820 SKF 727 328 1.0 116
Show 08436+0812 DAM1476 204 0.8 117
Show 08441+0816 SKF 499 195 1.6 117
Show 08410+0745 SKF 711 76 1.4 118
Show 08443+0431 SKF 500 226 1.8 120
Show 08387+0637 UC 1696 194 58.0 122
Show 08501+0818 BOW 2 50 3.2 123
Show 08534+0513 A 2752 230 5.1 124
Show 08465+0419 STF1267 61 10.9 127
Show 08460+0833 KPP1972 73 15.6 129
Show 08523+0804 TOK 22 341 3.2 129

 
 
WDS 08468+0625 : COMPONENTS
 
 
  A B C D E
B pa=126.2°
sep=0.20"
 
C pa=312.8°
sep=2.68"
pa=312.3°
sep=2.88"
 
D pa=200.6°
sep=18.10"
pa=201.2°
sep=18.05"
pa=193.2°
sep=19.27"
 
E pa=2.0°
sep=340.50"
pa=2.0°
sep=340.61"
pa=2.3°
sep=338.75"
pa=2.9°
sep=357.70"
 
F pa=265.3°
sep=406.50"
pa=265.3°
sep=406.66"
pa=265.0°
sep=404.70"
pa=267.6°
sep=399.11"
pa=228.1°
sep=559.87"
 
 
08468+0625 A
 
 
Common name Ashlesha Coord arcsec 2000 084646.51+062507.7 Mag 3.5 Spectral class G1III (yellow)
PmRA -228.00 PmDE -44.0 HIP 43109 Tycho2 0224-01333-1
HD 74874 HR 3482 BD BD+06 2036 Bayer Epsilon Hydrae
Bayer name eps Hya Flamsteed 11 Hydrae Flamsteed name 11 Hya
Tycho2
Tycho2 0224-01333-1 Pflag RAmdeg 131.69386615 DEmdeg 6.41877721
PmRA -199.4 PmDE -53.2 E RAmdeg 3 E DEmdeg 3
E pmRA 6.2 E pmDE 5.4 EpRAm 1991.78 EpDEm 1991.08
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 4.250 E BTmag 0.014 VTmag 3.488
E VTmag 0.009 Prox 28 TYC T HIP 43109
CCDM A RAdeg 131.69432472 DEdeg 6.41890917 EpRA 1990 1.78
EpDE 1990 1.08 E RAdeg 3.1 E DEdeg 3.4 Posflg D
Corr 0.2
Hipparcos
Catalog H HIP 43109 Proxy H RAhms 08 46 46.65
DEdms +06 25 08.1 Vmag 3.38 VarFlag R Vmag G
RAdeg 131.694 DEdeg 6.41891 AstroRef A Plx 24.13
CCDM -231.04 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AC
Theta 291 Rho 2.866 HD BD BD+06 2036
CD CP Dm number +06 2036 VIred 0.78
SpType G0III-IV R SpType Coord arcsec 2000 084646.65+062508.1
Hipparcos 2
HIP 43109 Sn 17 So 3 Nc 2
RArad 2.2985001691 DErad 0.1120310795 Plx 25.23 PmRA -228.11
PmDE -43.82 E RArad 0.91 E DErad 0.56 E Plx 0.98
E pmRA 0.92 E pmDE 0.64 Hpmag E Hpmag 0.0006
SHp 0.005 VA 0 BV 0.685 E BV 0.002
VI 0.78
CCDM
Ccdm 08468+0625 RComp Comp A Note1
Note2 Discov num DRAs -1.45 DDEs 7.6
R dRAs 10 Year Theta Rho
Obs 6 Vmag 3.8 Sp F8 PmNote *
PmRA -197 PmDE -53 Dm number +06 2036 Cat1 BD
Name2 Cat2 HD 74874 M HD
ADS BDS A 6993 M ADS BDS N IDS IDS 08415N0647A
HIC 43109
 
 
08468+0625 B
 
 
Coord arcsec 2000 084646.52+062507.6 Mag 5.6 Spectral class A8V (white) Delta magnitude 2.1
Coordinate calculated yes
CCDM
Ccdm 08468+0625 RComp Comp B Note1 *
Note2 Discov num SP DRAs DDEs
R dRAs Year 1888 Theta Rho
Obs 99 Vmag 5.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6993 M ADS BDS N IDS IDS 08415N0647B
HIC 43109
 
 
08468+0625 C
 
 
Coord arcsec 2000 084646.38+062509.5 Mag 6.66 Spectral class F7V (yellow-white) PmRA -182.00
PmDE -25.0 Delta magnitude 3.16 Coordinate calculated yes
CCDM
Ccdm 08468+0625 RComp Comp C Note1 *
Note2 Discov num STF1273 DRAs DDEs
R dRAs Year 1959 Theta 271 Rho 3.1
Obs 99 Vmag 7.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6993 M ADS BDS N IDS IDS 08415N0647C
HIC 43109
 
 
08468+0625 D
 
 
Coord arcsec 2000 084646.08+062450.8 Mag 12.5 PmRA -210.00 PmDE -36.0
Delta magnitude 9 Coordinate calculated yes
CCDM
Ccdm 08468+0625 RComp Comp D Note1
Note2 Discov num STF1273 DRAs DDEs
R dRAs Year 1938 Theta 196 Rho 19.2
Obs 13 Vmag 12.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6993 M ADS BDS N IDS IDS 08415N0647D
HIC
 
 
08468+0625 E
 
 
Coord arcsec 2000 084647.31+063048.0 Mag 10.78 PmRA -18.00 PmDE -3.0
Tycho2 0224-00951-1 Delta magnitude 7.28 Coordinate calculated yes
Tycho2
Tycho2 0224-00951-1 Pflag RAmdeg 131.69629307 DEmdeg 6.51315181
PmRA -18.9 PmDE 1.3 E RAmdeg 34 E DEmdeg 41
E pmRA 2.6 E pmDE 2.6 EpRAm 1982.71 EpDEm 1980.06
Num 4 Q RAmdeg 0.2 Q DEmdeg 0.5 Q pmRA 0.2
Q pmDE 0.5 BTmag 11.108 E BTmag 0.053 VTmag 10.777
E VTmag 0.062 Prox 999 TYC T HIP
CCDM RAdeg 131.69633639 DEdeg 6.51313694 EpRA 1990 1.65
EpDE 1990 1.17 E RAdeg 53.0 E DEdeg 76.0 Posflg
Corr 0.2
CCDM
Ccdm 08468+0625 RComp Comp E Note1
Note2 Discov num STF1273 DRAs -0.88 DDEs 347.2
R dRAs 65 Year 1921 Theta 359 Rho 336.2
Obs 1 Vmag 10.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6993 M ADS BDS N IDS IDS 08415N0647E
HIC
 
 
08468+0625 F
 
 
Coord arcsec 2000 084619.33+062434.4 Mag 10.39 PmRA -9.00 PmDE -13.0
Tycho2 0224-00363-1 Delta magnitude 6.89 Coordinate calculated yes
Tycho2
Tycho2 0224-00363-1 Pflag RAmdeg 131.57977824 DEmdeg 6.40932602
PmRA -10.1 PmDE -14.8 E RAmdeg 31 E DEmdeg 33
E pmRA 2.0 E pmDE 2.0 EpRAm 1981.58 EpDEm 1980.17
Num 7 Q RAmdeg 1.5 Q DEmdeg 0.9 Q pmRA 1.5
Q pmDE 0.9 BTmag 10.725 E BTmag 0.044 VTmag 10.390
E VTmag 0.045 Prox 999 TYC T HIP
CCDM RAdeg 131.57981750 DEdeg 6.40935722 EpRA 1990 1.56
EpDE 1990 1.31 E RAdeg 47.2 E DEdeg 55.4 Posflg
Corr 0.2
CCDM
Ccdm 08468+0625 RComp Comp F Note1
Note2 Discov num STF1273 DRAs -28.81 DDEs -26.6
R dRAs 10 Year 1921 Theta 265 Rho 424.5
Obs 1 Vmag 10.2 Sp PmNote *
PmRA 5 PmDE -17 Dm number +06 2034 Cat1 BD
Name2 +06 1135 Cat2 AGK2/3 HD M HD
ADS BDS A 6993 M ADS BDS N IDS IDS 08415N0647F
HIC