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Current system
11250-3200
CHR 242 Aa,Ab


Nearby doubles
25' : 11249-3225
TDS7846

26' : 11270-3157
UC 2139

30' : 11264-3223
RST2748

31' : 11235-3135
RST2745

31' : 11234-3224
LDS4092

48' : 11214-3212
RST2742

51' : 11273-3242
RST2750

53' : 11286-3136
TDS 636

54' : 11229-3247
JSP 484AB

56' : 11275-3115
TDS7865

56' : 11241-3255
BRT1669

62' : 11282-3114
HJ 4439

65' : 11296-3133
BRT2987

67' : 11218-3107
SKF1901

72' : 11230-3054
HJ 4430

73' : 11299-3123
RUZ 1

73' : 11225-3054
HJ 4428

76' : 11240-3045
RUZ 7

82' : 11273-3044
I 76

88' : 11219-3318
HDS1617

89' : 11188-3121
I 505

94' : 11274-3328
UC 2141

97' : 11191-3100
I 506

100' : 11261-3338
TVB 238

103' : 11330-3151
HJ 4449AB

104' : 11219-3024
LDS5729



Selections
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Binocular doubles
Binary Systems
Triple Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

11250-3200 CHR 242 Aa,Ab

 
 
11h 24m 58.83s -31° 59' 57.5" P.A. 72.00 sep 0.1 mag 8.00,8.90 Sp G5V dist. 47.35 pc (154.46 l.y.)
 
 
Coord 2000 11250-3200 Discov num CHR 242 Comp Aa,Ab Coord arcsec 2000 11 24 58.83 -31 59 57.5
Date first 1996 Date last 2021 Obs 12
Pa first 340 Pa last 71.9 P.A. Now (θ) 345.9°
Sep first 0.1 Sep last 0.096 Sep. Now (ρ) 0.058"
Mag pri 8.00 Mag sec 8.90 delta mag (ΔM) 0.9 Spectral class G5V (yellow)
Pri motion ra -060 Sec motion ra
Pri motion dec +013 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
11250-3200 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 202425 11 24 59 -31 59 58 CHR 242 Aa,Ab 2021 12 72 0.1 8.00 8.90 0.90 Y <===
Show HD 99240 202425 11 24 59 -31 59 58 UC 2133 AB 2017 10 192 57.1 8.93 9.92 0.99
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hydra SAO 202425 HIP 55714 Tycho2 7219-00022-1
Gaia DR2 3481380127975181696 HD 99240 CD CD-31 8979 CP CP-31 3271
Distance 47.35 Distance ly 154.46
 
 
ORBITAL ELEMENTS
 
 
Period (P)13.47y± 0.13 Periastron (T)2010.74y± 0.14 Semi-major axis (a)0.137a± 0.002
Eccentricity (e)0.563± 0.02 Inclination (i)115.7°± 1 Longitude of periastron (ω)211°± 4.7
Node (Ω)123.7°± 1.7 Notesn ReferenceTok2019c
Equinox Last observation2018 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 129.7 0.152
2001 123.4 0.182
2002 118.4 0.197
2003 113.9 0.198
2004 109.1 0.190
2005 103.6 0.172
2006 96.5 0.145
2007 85.5 0.112
2008 64.4 0.076
2009 17.4 0.054
2010 323.3 0.065
2011 266.6 0.039
2012 152.3 0.072
2013 133.9 0.132
2014 126.1 0.170
2015 120.7 0.191
2016 116.0 0.199
2017 111.4 0.195
2018 106.4 0.181
2019 100.1 0.159
2020 91.4 0.128
2021 76.4 0.093
2022 43.6 0.061
2023 345.9 0.058
2024 300.6 0.061
2025 182.6 0.040
2026 139.9 0.106
2027 129.3 0.155
2028 123.1 0.183
2029 118.1 0.197
2030 113.6 0.198


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


 
  


wds11250-3200a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 11250-3200 CHR 242 Aa,Ab : NOTES
 
 
discov_num notes refcode
CHR 242 Aa,Ab: The 0".1 pair CHR 242 has only 1 observation in the WDS,
unresolved with speckle. Double lines were noted by the GCS. This star
remains a mystery. Tok2012a
UC 2133 AB: CPM candidate does not pass photometry test; likely optical. Tok2013c
 
 
REFERENCES
 
 
refcode metd author reference
Tok2012a A j Tokovinin, A., Hartnung, M., Hayward, T.L., & Makarov, V.V. 2012AJ....144....7T
Tok2012a AJ 144, 7, 2012
Tok2013c - Tokovinin, A. .
Tok2013c private communication, 2013
Tok2019c St j Tokovinin, A., Mason, B.D., Mendez, R.A., Horch, E.P. & Briceno, C. 2019AJ....158...48T
Tok2019c +orb AJ 158, 48, 2019
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
3 UC USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4)
3 UC Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G.,
3 UC & Zacharias, M.I. (UCAC4 Catalog)
14 UC Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C.,
14 UC DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
14 UC Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11250-3200 CHR 242 Aa,Ab 2001 2 292 0.2 8.00 8.90 G5V D 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2013 3 132 0.1 8.00 8.90 G5V N 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2014 4 126 0.2 8.00 8.90 G5V N 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2015 5 120 0.2 8.00 8.90 G5V N 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2017 7 110 0.2 8.00 8.90 G5V N 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2018 9 100 0.2 8.00 8.90 G5V N 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2019 10 92 0.1 8.00 8.90 G5V NO 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2020 11 79 0.1 8.00 8.90 G5V NO 112458.83-315957.5
11250-3200 CHR 242 Aa,Ab 2021 12 72 0.1 8.00 8.90 G5V NO 112458.83-315957.5

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

 
 
WDS 11250-3200 CHR 242 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11250-3200 CHR 242 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 11250-3200 : VIRTUAL EYEPIECE
 
 

11250-3200 UC 2133A mag 8.93 Sp G5V 11250-3200 CHR 242Ab sep 0.1 P.A. 68.90 mag 8.9 11250-3200 UC 2133B sep 56.8 P.A. 189.80 mag 9.92 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 11250-3200 : ALADIN DSS IMAGE @ 11h 24m 58.83s -31° 59' 57.5"
 
 
 
 
WDS 11250-3200 CHR 242 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11250-3200 CHR 242Aa,Ab distance=0' 11249-3225 TDS7846 distance=25' 11270-3157 UC 2139 distance=26' 11264-3223 RST2748 distance=30' 11235-3135 RST2745 distance=31' 11234-3224 LDS4092 distance=31' 11214-3212 RST2742 distance=48' 11273-3242 RST2750 distance=51' 11286-3136 TDS 636 distance=53' 11229-3247 JSP 484AB distance=54' 11275-3115 TDS7865 distance=56' 11241-3255 BRT1669 distance=56' 11282-3114 HJ 4439 distance=62' 11296-3133 BRT2987 distance=65' 11218-3107 SKF1901 distance=67' 11230-3054 HJ 4430 distance=72' 11299-3123 RUZ 1 distance=73' 11225-3054 HJ 4428 distance=73' 11240-3045 RUZ 7 distance=76' 11273-3044 I 76 distance=82' 11219-3318 HDS1617 distance=88' 11188-3121 I 505 distance=89' 11274-3328 UC 2141 distance=94' 11191-3100 I 506 distance=97' 11261-3338 TVB 238 distance=100' 11330-3151 HJ 4449AB distance=103' 11330-3151 WSI 102Aa,Ab distance=103' 11219-3024 LDS5729 distance=104' 11277-3022 UC 2142 distance=105' 11301-3038 UC 2155 distance=105' 11295-3031 SKF1218 distance=107' 11332-3137 LDS5731 distance=107' 11335-3221 LDS5732 distance=111' 11172-3110 RSS 260 distance=112' 11339-3150 LDS5733AB distance=114' 11339-3150 LDS5733Aa,Ab distance=114' 11344-3225 KPP 876 distance=123' 11348-3227 I 1213 distance=128' 11316-3338 I 1543AB distance=129' 11316-3338 I 1543AC distance=129' 11345-3250 LDS6245 distance=131' 11323-3020 LPR 1 distance=138' 11338-3039 SKF1903 distance=139' 11164-3032 DAW 100 distance=141' 11219-3416 VOU 25 distance=142' 11170-3023 DAW 101 distance=142' 11359-3259 LDS4121 distance=151' 11218-2936 LDS4089 distance=151' 11267-3429 NSN 294 distance=151' 11214-2936 HDS1616 distance=152' 11231-3431 RST2744 distance=153' 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 11250-3200 CHR 242 Aa,Ab 72 0.1
Show 11250-3200 UC 2133 AB 192 57.1
Show 11249-3225 TDS7846 188 1.4 25
Show 11270-3157 UC 2139 143 34.7 26
Show 11264-3223 RST2748 21 1.4 30
Show 11235-3135 RST2745 192 0.3 31
Show 11234-3224 LDS4092 121 18.9 31
Show 11214-3212 RST2742 113 0.8 48
Show 11273-3242 RST2750 97 1.5 51
Show 11286-3136 TDS 636 190 1.1 53
Show 11229-3247 JSP 484 AB 143 2.7 54
Show 11275-3115 TDS7865 261 0.5 56
Show 11241-3255 BRT1669 143 3.8 56
Show 11282-3114 HJ 4439 109 18.4 62
Show 11296-3133 BRT2987 215 3.8 65
Show 11218-3107 SKF1901 228 43.1 67
Show 11230-3054 HJ 4430 271 17.3 72
Show 11299-3123 RUZ 1 79 22.6 73
Show 11225-3054 HJ 4428 134 23.1 73
Show 11240-3045 RUZ 7 135 6.6 76
Show 11273-3044 I 76 50 7.2 82
Show 11219-3318 HDS1617 103 0.4 88
Show 11188-3121 I 505 284 1.6 89
Show 11274-3328 UC 2141 173 64.0 94
Show 11191-3100 I 506 173 0.8 97
Show 11261-3338 TVB 238 232 11.4 100
Show 11330-3151 HJ 4449 AB 134 74.6 103
Show 11330-3151 WSI 102 Aa,Ab 14 0.1 103
Show 11219-3024 LDS5729 137 78.2 104
Show 11277-3022 UC 2142 109 51.6 105
Show 11301-3038 UC 2155 321 8.0 105
Show 11295-3031 SKF1218 346 3.7 107
Show 11332-3137 LDS5731 18 9.2 107
Show 11335-3221 LDS5732 22 277.0 111
Show 11172-3110 RSS 260 236 1.7 112
Show 11339-3150 LDS5733 AB 328 17.0 114
Show 11339-3150 LDS5733 Aa,Ab 352 0.8 114
Show 11344-3225 KPP 876 156 7.4 123
Show 11348-3227 I 1213 153 1.6 128
Show 11316-3338 I 1543 AB 340 2.5 129
Show 11316-3338 I 1543 AC 160 26.8 129
Show 11345-3250 LDS6245 129 15.1 131
Show 11323-3020 LPR 1 359 80.2 138
Show 11338-3039 SKF1903 96 13.5 139
Show 11164-3032 DAW 100 327 1.9 141
Show 11219-3416 VOU 25 238 0.4 142
Show 11170-3023 DAW 101 284 3.7 142
Show 11359-3259 LDS4121 220 3.0 151
Show 11218-2936 LDS4089 106 22.4 151
Show 11267-3429 NSN 294 110 7.1 151
Show 11214-2936 HDS1616 181 0.3 152

 
 
WDS 11250-3200 : COMPONENTS
 
 
  A Ab
Ab pa=68.9°
sep=0.08"
 
B pa=189.8°
sep=56.78"
pa=189.9°
sep=56.82"
 
 
11250-3200 A
 
 
Name HD 99240 Coord arcsec 2000 112458.83-315957.5 Mag 8.93 Spectral class G5V (yellow)
PmRA -64.00 PmDE 3.0 SAO 202425 HIP 55714
Tycho2 7219-00022-1 HD 99240 CD CD-31 8979 CP CP-31 3271
Tycho2
Tycho2 7219-00022-1 Pflag RAmdeg 171.24514253 DEmdeg -31.99930911
PmRA -66.4 PmDE 3.3 E RAmdeg 6 E DEmdeg 7
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.06 EpDEm 1990.79
Num 11 Q RAmdeg 0.7 Q DEmdeg 0.9 Q pmRA 0.8
Q pmDE 0.9 BTmag 8.901 E BTmag 0.017 VTmag 8.151
E VTmag 0.012 Prox 584 TYC T HIP 55714
CCDM RAdeg 171.24532417 DEdeg -31.99931694 EpRA 1990 1.66
EpDE 1990 1.59 E RAdeg 6.1 E DEdeg 6.7 Posflg
Corr 0.2
SAO
SAO 202425 DelFlag RA1950 PmRA1950 -0.0047
DE1950 PmDE1950 0.013 Vmag 8 SpType G5
Double code Source 40 CatNum 5638 DM CD-31 8979
DMcomp BDsup HD 99240 M HD 0
GC RA1950rad 2.97810936 DE1950rad -0.55369471 PmRA2000 -0.0045
PmDE2000 0.017
Hipparcos
Catalog H HIP 55714 Proxy RAhms 11 24 58.88
DEdms -31 59 57.5 Vmag 8.08 VarFlag R Vmag H
RAdeg 171.245 DEdeg -31.9993 AstroRef Plx 20.55
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 99240 BD
CD CD-31 8979 CP CP-31 3271 Dm number -31 8979 VIred 0.73
SpType G5V R SpType Coord arcsec 2000 112458.88-315957.5
Hipparcos 2
HIP 55714 Sn 5 So 0 Nc 1
RArad 2.9887948168 DErad -0.5584934487 Plx 21.12 PmRA -58.84
PmDE -0.37 E RArad 0.54 E DErad 0.48 E Plx 0.75
E pmRA 0.74 E pmDE 0.48 Hpmag 8.212 E Hpmag 0.0018
SHp 0.014 VA 0 BV 0.665 E BV 0.013
VI 0.73
 
 
11250-3200 Ab
 
 
Coord arcsec 2000 112458.84-315957.5 Mag 8.9 Calc delta mag 0.9 Calc coord yes
 
 
11250-3200 B
 
 
Coord arcsec 2000 112458.07-320053.5 Mag 9.92 PmRA -70.00 PmDE 7.0
Tycho2 7219-00003-1 Calc delta mag 1.92 Calc coord yes
Tycho2
Tycho2 7219-00003-1 Pflag RAmdeg 171.24129462 DEmdeg -32.01517661
PmRA -65.8 PmDE 7.9 E RAmdeg 20 E DEmdeg 23
E pmRA 2.2 E pmDE 2.1 EpRAm 1990.35 EpDEm 1989.58
Num 6 Q RAmdeg 0.9 Q DEmdeg 2.0 Q pmRA 0.9
Q pmDE 2.0 BTmag 10.633 E BTmag 0.041 VTmag 9.949
E VTmag 0.033 Prox 584 TYC T HIP
CCDM RAdeg 171.24147444 DEdeg -32.01519444 EpRA 1990 1.71
EpDE 1990 1.59 E RAdeg 19.7 E DEdeg 24.1 Posflg
Corr 0.2