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Doubles in session


Current system
08453-0236
STF 1270
HD 74688


Nearby doubles
11' : 08459-0230
ITF 98

11' : 08460-0232
ITF 97

14' : 08461-0230
ITF 83

28' : 08468-0219
GWP1080AB

30' : 08436-0237
J 1530

35' : 08447-0309
RST4420

37' : 08430-0242
HO 355

43' : 08474-0306
RST4422

59' : 08449-0138
BAL 511

60' : 08425-0317
CVR1161

64' : 08414-0213
HJ 102AB

64' : 08411-0227
CVR1160

67' : 08498-0239
CVR1171

75' : 08502-0214
J 2065

77' : 08405-0239
J 3289

77' : 08500-0205
CVR1172

79' : 08494-0327
HUB 9

79' : 08504-0210
J 1533

81' : 08501-0313
TDS6121

81' : 08446-0116
HDS1258

83' : 08503-0156
J 1350AB

84' : 08500-0322
GWP1090

84' : 08501-0318
DAM1489

87' : 08448-0110
GWP1075

88' : 08453-0109
BAL 856

93' : 08504-0328
KPP2969



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.

08453-0236 STF 1270 (HD 74688)

 
 
08h 45m 20.79s -02° 36' 03.7" P.A. 265.00 sep 4.7 mag 6.89,7.54 Sp F2IV dist. 61.77 pc (201.49 l.y.)
 
 
Coord 2000 08453-0236 Discov num STF1270 Comp Coord arcsec 2000 08 45 20.79 -02 36 03.7
Date first 1824 Date last 2020 Obs 95
Pa first 258 Pa last 265 P.A. Now (θ) 265°
Sep first 5.0 Sep last 4.67 Sep. Now (ρ) 4.67"
Mag pri 6.89 Mag sec 7.54 delta mag (ΔM) 0.65 Spectral class F2IV (yellow-white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec -013 Sec motion dec -013
Notes N V (See Notes, Proper motion indicates physical)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 74688 Constellation Hydra SAO 136243 HIP 42951
Tycho2 4868-01276-2 Gaia DR2 3072183754573061760 HD 74688 HR 3472
GC 12054 ADS 6977 BD BD-02 2676 Distance 61.77
Distance ly 201.49
 
 
WDS 08453-0236 STF 1270 (HD 74688) : NOTES
 
 
discov_num notes refcode
STF1270 HJL 98. HJL1986
HIP 42951. Very small PM(A)=(+1,-9). B is considered physical based on
the CMDs and its brightness. Tok2011a
A = MX Hya, Algol-type, depth 0.5mag. Rucinski (2002 PASP 114,
1124) gives period of MX Hya 0.7960d. So far, no estimates of the mass
ratio for Aa,Ab, no SB orbit. dHp=0.49mag. Tok2014d
 
 
REFERENCES
 
 
refcode metd author reference
HJL1986 Pa - Halbwachs, J.L. 1986A&AS...66..131H
HJL1986 A&AS 66, 131, 1986
HJL1986 (Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986 only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
Tok2011a E2 - Tokovinin, A. 2011AJ....141...52T
Tok2011a +C+ AJ 141, 52, 2011
Tok2011a +Hh
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08453-0236 STF1270 2007 81 264 4.7 6.89 7.54 F2IV DV 084520.79-023603.7
08453-0236 STF1270 2010 82 265 4.4 6.89 7.54 F2IV NVD 084520.79-023603.7
08453-0236 STF1270 2011 84 265 4.5 6.89 7.54 F2IV NVD 084520.79-023603.7
08453-0236 STF1270 2013 83 264 4.6 6.89 7.54 F2IV NVD 084520.79-023603.7
08453-0236 STF1270 2015 84 264 4.6 6.89 7.54 F2IV NV 084520.79-023603.7
08453-0236 STF1270 2016 86 265 4.7 6.89 7.54 F2IV NV 084520.79-023603.7
08453-0236 STF1270 2017 90 265 4.7 6.89 7.54 F2IV NV 084520.79-023603.7
08453-0236 STF1270 2020 94 265 4.7 6.89 7.54 F2IV NV 084520.79-023603.7

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

 
 
WDS 08453-0236 STF 1270 (HD 74688) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08453-0236 STF 1270 (HD 74688) : MEASURES
 
 
No records found.

 
 
WDS 08453-0236 (HD 74688) : VIRTUAL EYEPIECE
 
 

08453-0236 STF1270A mag 6.89 Sp F2IV 08453-0236 STF1270B sep 4.7 P.A. 265.00 mag 7.54 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 08453-0236 (HD 74688) : ALADIN DSS IMAGE @ 08h 45m 20.79s -02° 36' 03.7"
 
 
 
 
WDS 08453-0236 STF 1270 (HD 74688) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08453-0236 STF1270 distance=0' 08459-0230 ITF 98 distance=11' 08460-0232 ITF 97 distance=11' 08461-0230 ITF 83 distance=14' 08468-0219 GWP1080AB distance=28' 08468-0219 GWP1081AC distance=28' 08468-0219 GWP1081BC distance=29' 08436-0237 J 1530 distance=30' 08447-0309 RST4420 distance=35' 08430-0242 HO 355 distance=37' 08474-0306 RST4422 distance=43' 08449-0138 BAL 511 distance=59' 08425-0317 CVR1161 distance=60' 08414-0213 HJ 102AB distance=64' 08414-0213 HJ 103BC distance=64' 08411-0227 CVR1160 distance=64' 08498-0239 CVR1171 distance=67' 08502-0214 J 2065 distance=75' 08405-0239 J 3289 distance=77' 08500-0205 CVR1172 distance=77' 08494-0327 HUB 9 distance=79' 08504-0210 J 1533 distance=79' 08501-0313 TDS6121 distance=81' 08446-0116 HDS1258 distance=81' 08503-0156 J 1350AB distance=83' 08500-0322 GWP1090 distance=84' 08501-0318 DAM1489 distance=84' 08448-0110 GWP1075 distance=87' 08453-0109 BAL 856 distance=88' 08504-0328 KPP2969 distance=93' 08435-0104 HDS1254 distance=97' 08510-0147 GWP1092 distance=98' 08441-0412 A 552 distance=98' 08420-0109 A 1751CD distance=101' 08415-0114 UC 1700 distance=101' 08420-0109 A 1750AB distance=101' 08420-0109 ARY 82AC distance=101' 08420-0109 A 1750Ba,Bb distance=101' 08512-0326 UC 1723 distance=101' 08392-0317 GWP1060 distance=102' 08386-0249 GWP1056 distance=102' 08405-0359 KPP2716 distance=110' 08525-0303 HJ 108 distance=111' 08380-0226 HJ 98 distance=112' 08401-0115 J 423 distance=114' 08515-0126 BAL 515 distance=116' 08453-0432 GWP1076 distance=116' 08406-0410 RST4416 distance=118' 08492-0419 TVB 203 distance=118' 08518-0127 CVR1175 distance=119' 08504-0412 HJ 107 distance=123' 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 08453-0236 STF1270 265 4.7
Show 08459-0230 ITF 98 114 21.9 11
Show 08460-0232 ITF 97 350 4.5 11
Show 08461-0230 ITF 83 322 5.7 14
Show 08468-0219 GWP1080 AB 74 54.6 28
Show 08468-0219 GWP1081 AC 62 56.3 28
Show 08468-0219 GWP1081 BC 345 10.8 29
Show 08436-0237 J 1530 303 12.3 30
Show 08447-0309 RST4420 295 1.2 35
Show 08430-0242 HO 355 152 0.8 37
Show 08474-0306 RST4422 152 2.5 43
Show 08449-0138 BAL 511 346 5.0 59
Show 08425-0317 CVR1161 167 4.0 60
Show 08414-0213 HJ 102 AB 329 34.0 64
Show 08414-0213 HJ 103 BC 261 5.2 64
Show 08411-0227 CVR1160 182 3.1 64
Show 08498-0239 CVR1171 276 4.2 67
Show 08502-0214 J 2065 5 5.0 75
Show 08405-0239 J 3289 94 4.2 77
Show 08500-0205 CVR1172 357 4.8 77
Show 08494-0327 HUB 9 170 1.3 79
Show 08504-0210 J 1533 233 6.7 79
Show 08501-0313 TDS6121 119 0.8 81
Show 08446-0116 HDS1258 198 0.5 81
Show 08503-0156 J 1350 AB 258 4.3 83
Show 08500-0322 GWP1090 45 18.6 84
Show 08501-0318 DAM1489 119 8.8 84
Show 08448-0110 GWP1075 344 36.8 87
Show 08453-0109 BAL 856 22 18.5 88
Show 08504-0328 KPP2969 125 2.1 93
Show 08435-0104 HDS1254 28 0.7 97
Show 08510-0147 GWP1092 8 32.3 98
Show 08441-0412 A 552 35 0.2 98
Show 08420-0109 A 1751 CD 141 0.5 101
Show 08415-0114 UC 1700 183 20.3 101
Show 08420-0109 A 1750 AB 41 0.2 101
Show 08420-0109 ARY 82 AC 80 137.3 101
Show 08420-0109 A 1750 Ba,Bb 68 0.1 101
Show 08512-0326 UC 1723 202 10.3 101
Show 08392-0317 GWP1060 16 10.0 102
Show 08386-0249 GWP1056 91 707.7 102
Show 08405-0359 KPP2716 215 7.2 110
Show 08525-0303 HJ 108 252 9.2 111
Show 08380-0226 HJ 98 100 8.2 112
Show 08401-0115 J 423 283 6.9 114
Show 08515-0126 BAL 515 82 7.4 116
Show 08453-0432 GWP1076 162 6.8 116
Show 08406-0410 RST4416 333 2.1 118
Show 08492-0419 TVB 203 110 7.6 118
Show 08518-0127 CVR1175 159 4.2 119
Show 08504-0412 HJ 107 24 33.5 123

 
 
WDS 08453-0236 : COMPONENTS
 
 
  A
B pa=265.0°
sep=4.67"
 
 
08453-0236 A
 
 
Componente originario normalizzato AB Name HD 74688 Coord arcsec 2000 084520.79-023603.7 Mag 6.89
Spectral class F2IV (yellow-white) PmRA 4.00 PmDE -13.0 SAO 136243
HIP 42951 Tycho2 4868-01276-2 HD 74688 HR 3472
GC 12054 BD BD-02 2676
Tycho2
Tycho2 4868-01276-2 Pflag RAmdeg 131.33661073 DEmdeg -2.60103925
PmRA 41.1 PmDE -4.7 E RAmdeg 6 E DEmdeg 5
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.07 EpDEm 1991.27
Num 6 Q RAmdeg 9.9 Q DEmdeg 1.6 Q pmRA 9.9
Q pmDE 1.6 BTmag 7.473 E BTmag 0.016 VTmag 6.893
E VTmag 0.011 Prox 46 TYC HIP 42951
CCDM A RAdeg 131.33651806 DEdeg -2.60102806 EpRA 1990 1.63
EpDE 1990 1.67 E RAdeg 5.6 E DEdeg 5.2 Posflg
Corr 0.3
SAO
SAO 136243 DelFlag RA1950 PmRA1950 0.0001
DE1950 PmDE1950 -0.009 Vmag 6.2 SpType F5
Double code Source 70 CatNum 12054 DM BD-02 2676
DMcomp A BDsup HD 74688 M HD 0
GC 12054 RA1950rad 2.28123629 DE1950rad -0.04220474 PmRA2000 0.0004
PmDE2000 -0.006
Hipparcos
Catalog H HIP 42951 Proxy H RAhms 08 45 20.77
DEdms -02 36 03.7 Vmag 6.41 VarFlag 2 R Vmag G
RAdeg 131.337 DEdeg -2.60103 AstroRef A Plx 11.5
CCDM 08453-0236 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 264 Rho 4.679 HD 74688 BD BD-02 2676
CD CP Dm number -02 2676 VIred 0.59
SpType F2+... R SpType Coord arcsec 2000 084520.77-023603.7
Hipparcos 2
HIP 42951 Sn 15 So 3 Nc 2
RArad 2.2922547258 DErad -0.045396529 Plx 16.19 PmRA 0.76
PmDE -8.94 E RArad 3.3 E DErad 1.76 E Plx 2.64
E pmRA 4.3 E pmDE 2.25 Hpmag 6.5458 E Hpmag 0.0065
SHp 0.093 VA 2 BV 0.521 E BV 0.006
VI 0.59
CCDM
Ccdm 08453-0236 RComp Comp A Note1
Note2 Discov num DRAs 2.22 DDEs -4.1
R dRAs 12 Year Theta Rho
Obs 2 Vmag 6.6 Sp F5 PmNote
PmRA -6 PmDE -6 Dm number -02 2676 Cat1 BD
Name2 136242 Cat2 SAO HD 74688 M HD
ADS BDS A 6977 M ADS BDS N IDS IDS 08403S0214A
HIC 42951
 
 
08453-0236 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 084520.48-023604.1 Mag 7.54 PmRA 4.00
PmDE -13.0 Tycho2 4868-01276-1 Calc delta mag 0.65 Calc coord yes
Tycho2
Tycho2 4868-01276-1 Pflag RAmdeg 131.33523816 DEmdeg -2.60116849
PmRA 4.3 PmDE -6.5 E RAmdeg 7 E DEmdeg 6
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.18 EpDEm 1991.35
Num 7 Q RAmdeg 2.1 Q DEmdeg 2.0 Q pmRA 2.2
Q pmDE 2.0 BTmag 8.017 E BTmag 0.018 VTmag 7.538
E VTmag 0.013 Prox 46 TYC T HIP 42951
CCDM B RAdeg 131.33522778 DEdeg -2.60115333 EpRA 1990 1.56
EpDE 1990 1.64 E RAdeg 7.1 E DEdeg 6.4 Posflg
Corr 0.3
CCDM
Ccdm 08453-0236 RComp Comp B Note1
Note2 Discov num STF1270 DRAs DDEs
R dRAs Year 1830 Theta 262 Rho 4.7
Obs 99 Vmag 7.6 Sp PmNote
PmRA -28 PmDE -27 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6977 M ADS BDS N IDS IDS 08403S0214B
HIC 42951