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Doubles in session


Current system
11191-3100
I 506
HD 98415


Nearby doubles
22' : 11188-3121
I 505

27' : 11172-3110
RSS 260

36' : 11218-3107
SKF1901

45' : 11225-3054
HJ 4428

45' : 11164-3032
DAW 100

47' : 11170-3023
DAW 101

51' : 11219-3024
LDS5729

51' : 11230-3054
HJ 4430

62' : 11167-3007
I 1537AB

62' : 11161-3011
RSS 259

66' : 11240-3045
RUZ 7

68' : 11235-3135
RST2745

78' : 11214-3212
RST2742

87' : 11125-3118
B 2271

90' : 11144-2954
HJ 4418

90' : 11214-2936
HDS1616

92' : 11218-2936
LDS4089

95' : 11118-3110
LDS5728

96' : 11118-3045
BRT2985

97' : 11250-3200
UC 2133AB

100' : 11234-3224
LDS4092

108' : 11273-3044
I 76

110' : 11275-3115
TDS7865

113' : 11249-3225
TDS7846

117' : 11270-3157
UC 2139

118' : 11229-3247
JSP 484AB



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.

11191-3100 I 506 (HD 98415)

 
 
11h 19m 04.62s -31° 00' 22.3" P.A. 173.00 sep 0.8 mag 8.24,9.37 Sp G2/3V dist. 93.63 pc (305.42 l.y.)
 
 
Coord 2000 11191-3100 Discov num I   506 Comp Coord arcsec 2000 11 19 04.62 -31 00 22.3
Date first 1909 Date last 2016 Obs 27
Pa first 100 Pa last 172.6 P.A. Now (θ) 172.6°
Sep first 1.0 Sep last 0.794 Sep. Now (ρ) 0.794"
Mag pri 8.24 Mag sec 9.37 delta mag (ΔM) 1.13 Spectral class G2/3V (yellow)
Pri motion ra -077 Sec motion ra -077
Pri motion dec +071 Sec motion dec +071
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 98415 Constellation Hydra SAO 202316 HIP 55258
Tycho2 7202-00516-1 Gaia DR2 5404014958061662720 HD 98415 CD CD-30 9107
CP CP-30 3311 Distance 93.63 Distance ly 305.42
 
 
ORBITAL ELEMENTS
 
 
Period (P)585y Periastron (T)2460y Semi-major axis (a)1.94a
Eccentricity (e)0.634 Inclination (i)71.3° Longitude of periastron (ω)301.3°
Node (Ω)87.6° Notes ReferenceUSN2002
Equinox2000 Last observation1991 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 162.9 0.786
2001 163.8 0.786
2002 164.7 0.787
2003 165.6 0.787
2004 166.6 0.788
2005 167.5 0.789
2006 168.4 0.790
2007 169.3 0.792
2008 170.2 0.793
2009 171.2 0.795
2010 172.1 0.797
2011 173.0 0.799
2012 173.9 0.801
2013 174.8 0.803
2014 175.6 0.806
2015 176.5 0.808
2016 177.4 0.811
2017 178.3 0.814
2018 179.1 0.817
2019 180.0 0.820
2020 180.8 0.823
2021 181.7 0.827
2022 182.5 0.830
2023 183.4 0.834
2024 184.2 0.838
2025 185.0 0.842
2026 185.8 0.846
2027 186.6 0.850
2028 187.4 0.855
2029 188.2 0.859
2030 188.9 0.864


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


 
  


wds11191-3100a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 11191-3100 I 506 (HD 98415) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
USN2002 orb - Seymour, D., Mason, B.D., Hartkopf, W.I., & Wycoff, G.L. 2002AJ....123.1023S
USN2002 AJ 123, 1023, 2002
 
 
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
11191-3100 I 506 1995 25 152 0.8 8.24 9.37 G2/3V OD 111904.62-310022.3
11191-3100 I 506 2011 26 168 0.8 8.24 9.37 G2/3V OD 111904.62-310022.3
11191-3100 I 506 2016 27 173 0.8 8.24 9.37 G2/3V O 111904.62-310022.3

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

 
 
WDS 11191-3100 I 506 (HD 98415) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11191-3100 I 506 (HD 98415) : MEASURES
 
 
No records found.

 
 
WDS 11191-3100 (HD 98415) : VIRTUAL EYEPIECE
 
 

11191-3100 I 506A mag 8.24 Sp G2/3V 11191-3100 I 506B sep 0.8 P.A. 173.60 mag 9.37 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 11191-3100 (HD 98415) : ALADIN DSS IMAGE @ 11h 19m 04.62s -31° 00' 22.3"
 
 
 
 
WDS 11191-3100 I 506 (HD 98415) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11191-3100 I 506 distance=0' 11188-3121 I 505 distance=22' 11172-3110 RSS 260 distance=27' 11218-3107 SKF1901 distance=36' 11225-3054 HJ 4428 distance=45' 11164-3032 DAW 100 distance=45' 11170-3023 DAW 101 distance=47' 11219-3024 LDS5729 distance=51' 11230-3054 HJ 4430 distance=51' 11167-3007 I 1537AB distance=62' 11167-3007 HJ 4422AC distance=62' 11161-3011 RSS 259 distance=62' 11240-3045 RUZ 7 distance=66' 11235-3135 RST2745 distance=68' 11214-3212 RST2742 distance=78' 11125-3118 B 2271 distance=87' 11144-2954 HJ 4418 distance=90' 11214-2936 HDS1616 distance=90' 11218-2936 LDS4089 distance=92' 11118-3110 LDS5728 distance=95' 11118-3045 BRT2985 distance=96' 11250-3200 CHR 242Aa,Ab distance=97' 11250-3200 UC 2133AB distance=97' 11234-3224 LDS4092 distance=100' 11273-3044 I 76 distance=108' 11275-3115 TDS7865 distance=110' 11249-3225 TDS7846 distance=113' 11270-3157 UC 2139 distance=117' 11229-3247 JSP 484AB distance=118' 11282-3114 HJ 4439 distance=118' 11277-3022 UC 2142 distance=119' 11105-3146 HDS1592 distance=119' 11247-2925 UC 2131 distance=120' 11264-3223 RST2748 distance=125' 11286-3136 TDS 636 distance=128' 11241-3255 BRT1669 distance=131' 11202-2845 RST1575 distance=137' 11295-3031 SKF1218 distance=138' 11097-2953 LDS5727 distance=139' 11296-3133 BRT2987 distance=139' 11092-3002 WBB 2 distance=141' 11299-3123 RUZ 1 distance=141' 11219-3318 HDS1617 distance=143' 11093-3208 LDS5726 distance=143' 11106-3234 I 213AB distance=144' 11106-3234 I 213AC distance=144' 11301-3038 UC 2155 distance=145' 11100-2936 HJ 4412 distance=145' 11273-3242 RST2750 distance=146' 11105-3250 RST2727 distance=155' 11085-2939 CVR1742 distance=159' 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 11191-3100 I 506 173 0.8
Show 11188-3121 I 505 284 1.6 22
Show 11172-3110 RSS 260 236 1.7 27
Show 11218-3107 SKF1901 228 43.1 36
Show 11225-3054 HJ 4428 134 23.1 45
Show 11164-3032 DAW 100 327 1.9 45
Show 11170-3023 DAW 101 284 3.7 47
Show 11219-3024 LDS5729 137 78.2 51
Show 11230-3054 HJ 4430 271 17.3 51
Show 11167-3007 I 1537 AB 21 1.0 62
Show 11167-3007 HJ 4422 AC 348 9.6 62
Show 11161-3011 RSS 259 74 11.7 62
Show 11240-3045 RUZ 7 135 6.6 66
Show 11235-3135 RST2745 192 0.3 68
Show 11214-3212 RST2742 113 0.8 78
Show 11125-3118 B 2271 284 3.2 87
Show 11144-2954 HJ 4418 255 7.4 90
Show 11214-2936 HDS1616 181 0.3 90
Show 11218-2936 LDS4089 106 22.4 92
Show 11118-3110 LDS5728 192 105.1 95
Show 11118-3045 BRT2985 253 4.5 96
Show 11250-3200 CHR 242 Aa,Ab 72 0.1 97
Show 11250-3200 UC 2133 AB 192 57.1 97
Show 11234-3224 LDS4092 121 18.9 100
Show 11273-3044 I 76 50 7.2 108
Show 11275-3115 TDS7865 261 0.5 110
Show 11249-3225 TDS7846 188 1.4 113
Show 11270-3157 UC 2139 143 34.7 117
Show 11229-3247 JSP 484 AB 143 2.7 118
Show 11282-3114 HJ 4439 109 18.4 118
Show 11277-3022 UC 2142 109 51.6 119
Show 11105-3146 HDS1592 242 0.6 119
Show 11247-2925 UC 2131 95 6.9 120
Show 11264-3223 RST2748 21 1.4 125
Show 11286-3136 TDS 636 190 1.1 128
Show 11241-3255 BRT1669 143 3.8 131
Show 11202-2845 RST1575 283 0.7 137
Show 11295-3031 SKF1218 346 3.7 138
Show 11097-2953 LDS5727 107 132.9 139
Show 11296-3133 BRT2987 215 3.8 139
Show 11092-3002 WBB 2 16 0.3 141
Show 11299-3123 RUZ 1 79 22.6 141
Show 11219-3318 HDS1617 103 0.4 143
Show 11093-3208 LDS5726 112 30.1 143
Show 11106-3234 I 213 AB 81 0.2 144
Show 11106-3234 I 213 AC 170 0.1 144
Show 11301-3038 UC 2155 321 8.0 145
Show 11100-2936 HJ 4412 266 12.6 145
Show 11273-3242 RST2750 97 1.5 146
Show 11105-3250 RST2727 9 2.4 155
Show 11085-2939 CVR1742 303 131.3 159

 
 
WDS 11191-3100 : COMPONENTS
 
 
  A
B pa=173.6°
sep=0.79"
 
 
11191-3100 A
 
 
Componente originario normalizzato AB Name HD 98415 Coord arcsec 2000 111904.62-310022.3 Mag 8.24
Spectral class G2/3V (yellow) PmRA -77.00 PmDE 71.0 SAO 202316
HIP 55258 Tycho2 7202-00516-1 HD 98415 CD CD-30 9107
CP CP-30 3311
Tycho2
Tycho2 7202-00516-1 Pflag RAmdeg 169.76927312 DEmdeg -31.00623564
PmRA -76.5 PmDE 70.7 E RAmdeg 6 E DEmdeg 6
E pmRA 1.5 E pmDE 1.4 EpRAm 1991.07 EpDEm 1991.12
Num 8 Q RAmdeg 1.5 Q DEmdeg 1.0 Q pmRA 1.5
Q pmDE 1.1 BTmag 8.671 E BTmag 0.017 VTmag 8.028
E VTmag 0.012 Prox 999 TYC T HIP 55258
CCDM AB RAdeg 169.76948083 DEdeg -31.00639917 EpRA 1990 1.61
EpDE 1990 1.67 E RAdeg 6.0 E DEdeg 5.9 Posflg P
Corr 0.1
SAO
SAO 202316 DelFlag RA1950 PmRA1950 -0.0091
DE1950 PmDE1950 0.079 Vmag 7.9 SpType G0
Double code Source 40 CatNum 5574 DM CD-30 9107
DMcomp BDsup HD 98415 M HD 0
GC RA1950rad 2.95239965 DE1950rad -0.53640036 PmRA2000 -0.0089
PmDE2000 0.083
Hipparcos
Catalog H HIP 55258 Proxy H RAhms 11 19 04.67
DEdms -31 00 23.0 Vmag 7.89 VarFlag R Vmag G
RAdeg 169.769 DEdeg -31.0064 AstroRef A Plx 11.48
CCDM 11191-3100 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 150 Rho 0.8 HD 98415 BD
CD CD-30 9107 CP CP-30 3311 Dm number -30 9107 VIred 0.67
SpType G2/G3V R SpType Coord arcsec 2000 111904.67-310023.0
Hipparcos 2
HIP 55258 Sn 15 So 3 Nc 2
RArad 2.963036257 DErad -0.5411634248 Plx 10.68 PmRA -70.23
PmDE 69.98 E RArad 0.64 E DErad 0.82 E Plx 0.94
E pmRA 0.78 E pmDE 0.81 Hpmag 8.0071 E Hpmag 0.0017
SHp 0.012 VA 0 BV 0.601 E BV 0.015
VI 0.67
CCDM
Ccdm 11191-3100 RComp Comp A Note1
Note2 Discov num DRAs -1.62 DDEs -21.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.2 Sp G0 PmNote *
PmRA -118 PmDE 79 Dm number -30 9107 Cat1 CD
Name2 202316 Cat2 SAO HD 98415 M HD
ADS BDS M ADS BDS N IDS IDS 11142S3028A
HIC 55258
 
 
11191-3100 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 111904.63-310023.1 Mag 9.37 PmRA -77.00
PmDE 71.0 Calc delta mag 1.13 Calc coord yes
CCDM
Ccdm 11191-3100 RComp Comp B Note1
Note2 Discov num I 506 DRAs DDEs
R dRAs Year 1960 Theta 127 Rho 0.8
Obs 9 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 11142S3028B
HIC 55258