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Current system
10455-2502
I 502 AB
HD 93227


Nearby doubles
27' : 10436-2505
B 204

27' : 10468-2523
DON 437

28' : 10455-2529
BRT2983

31' : 10466-2435
LDS4015

41' : 10475-2431
TDS7474

43' : 10486-2510
DON 440

47' : 10428-2529
DON 430

59' : 10478-2411
SKF1470

60' : 10497-2443
WIS 174

65' : 10454-2357
TDS7455

70' : 10480-2602
TDS7476

81' : 10434-2346
ARA2165

83' : 10483-2615
UC 1997

84' : 10402-2419
TVB 230

100' : 10392-2551
TOK 135

109' : 10522-2603
LDS4027

113' : 10514-2341
B 205

114' : 10513-2624
KPP 612

119' : 10493-2649
I 503

120' : 10375-2551
BRT2980

120' : 10538-2420
B 206

123' : 10369-2540
UC 1965

128' : 10549-2452
TDS7550

130' : 10375-2354
ARA2164

133' : 10465-2250
CVR 574

134' : 10454-2249
ARA1784



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

10455-2502 I 502 AB (HD 93227)

 
 
10h 45m 32.90s -25° 01' 34.0" P.A. 174.00 sep 0.1 mag 7.78,8.86 Sp K0IV dist. 186.22 pc (607.45 l.y.)
 
 
Coord 2000 10455-2502 Discov num I   502 Comp AB Coord arcsec 2000 10 45 32.90 -25 01 34.0
Date first 1909 Date last 2020 Obs 20
Pa first 45 Pa last 173.9 P.A. Now (θ) 173.9°
Sep first 0.6 Sep last 0.103 Sep. Now (ρ) 0.103"
Mag pri 7.78 Mag sec 8.86 delta mag (ΔM) 1.08 Spectral class K0IV (yellow-orange)
Pri motion ra -029 Sec motion ra
Pri motion dec +017 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
10455-2502 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 93227 179198 10 45 33 -25 01 34 I 502 AB 2020 20 174 0.1 7.78 8.86 1.08 Y <===
Show 179198 10 45 33 -25 01 34 I 502 AC 1959 2 140 2.0 7.78 13.30 5.52
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 93227 Constellation Hydra SAO 179198 HIP 52615
Tycho2 6638-00872-1 Gaia DR2 5470288983497553280 HD 93227 CD CD-24 9289
CP CP-24 4557 Distance 186.22 Distance ly 607.45
 
 
ORBITAL ELEMENTS
 
 
Period (P)256y± 44 Periastron (T)2016.58y± 0.22 Semi-major axis (a)0.307a± 0.028
Eccentricity (e)0.728± 0.028 Inclination (i)180° Longitude of periastron (ω)0°
Node (Ω)225.2°± 2.4 Notes ReferenceTok2019c
Equinox Last observation2018 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 335.2 0.192
2001 332.7 0.185
2002 329.9 0.177
2003 326.9 0.169
2004 323.5 0.161
2005 319.9 0.153
2006 315.8 0.145
2007 311.2 0.137
2008 306.1 0.129
2009 300.4 0.122
2010 293.8 0.114
2011 286.3 0.107
2012 277.8 0.100
2013 268.2 0.094
2014 257.3 0.089
2015 245.4 0.086
2016 232.7 0.084
2017 219.7 0.084
2018 207.0 0.085
2019 194.9 0.089
2020 183.9 0.093
2021 174.0 0.099
2022 165.3 0.106
2023 157.7 0.113
2024 151.0 0.120
2025 145.1 0.128
2026 139.9 0.136
2027 135.3 0.144
2028 131.2 0.152
2029 127.4 0.160
2030 124.0 0.168


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


 
  


wds10455-2502a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 10455-2502 I 502 AB (HD 93227) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
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 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
10455-2502 I 502 AB 1995 16 346 0.3 7.78 8.86 K0IV 104532.90-250134.0
10455-2502 I 502 AB 2017 17 216 0.1 7.78 8.86 K0IV 104532.90-250134.0
10455-2502 I 502 AB 2018 18 205 0.1 7.78 8.86 K0IV 104532.90-250134.0
10455-2502 I 502 AB 2019 19 192 0.1 7.78 8.86 K0IV O 104532.90-250134.0
10455-2502 I 502 AB 2020 20 174 0.1 7.78 8.86 K0IV O 104532.90-250134.0

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

 
 
WDS 10455-2502 I 502 AB (HD 93227) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10455-2502 I 502 AB (HD 93227) : MEASURES
 
 
No records found.

 
 
WDS 10455-2502 (HD 93227) : VIRTUAL EYEPIECE
 
 

10455-2502 I 502A mag 7.78 Sp K0IV 10455-2502 I 502B sep 0.1 P.A. 174.50 mag 8.86 10455-2502 I 502C sep 1.9 P.A. 142.70 mag 13.3 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 10455-2502 (HD 93227) : ALADIN DSS IMAGE @ 10h 45m 32.90s -25° 01' 34.0"
 
 
 
 
WDS 10455-2502 I 502 AB (HD 93227) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10455-2502 I 502AB distance=0' 10463-2511 DON 434A,BC distance=14' 10463-2511 DON 434BC distance=15' 10436-2505 B 204 distance=27' 10468-2523 DON 437 distance=27' 10455-2529 BRT2983 distance=28' 10466-2435 LDS4015 distance=31' 10475-2431 TDS7474 distance=41' 10486-2510 DON 440 distance=43' 10428-2529 DON 430 distance=47' 10478-2411 SKF1470 distance=59' 10432-2552 B 2720A,BC distance=60' 10497-2443 WIS 174 distance=60' 10432-2552 B 2720BC distance=62' 10454-2357 TDS7455 distance=65' 10480-2602 TDS7476 distance=70' 10434-2346 ARA2165 distance=81' 10483-2615 UC 1997 distance=83' 10402-2419 TVB 230 distance=84' 10392-2551 TOK 135 distance=100' 10522-2603 LDS4027 distance=109' 10514-2341 B 205 distance=113' 10513-2624 KPP 612 distance=114' 10493-2649 I 503 distance=119' 10375-2551 BRT2980 distance=120' 10538-2420 B 206 distance=120' 10369-2540 UC 1965 distance=123' 10549-2452 TDS7550 distance=128' 10375-2354 ARA2164 distance=130' 10465-2250 CVR 574 distance=133' 10454-2249 ARA1784 distance=134' 10533-2625 TDS7535 distance=135' 10415-2705 B 203 distance=135' 10381-2333 LDS4003AB distance=135' 10410-2301 ARA1782 distance=136' 10532-2335 B 1173 distance=136' 10541-2617 TDS7543 distance=138' 10384-2640 RST 500 distance=139' 10383-2639 DAM2470 distance=139' 10453-2243 DON1090 distance=140' 10433-2720 TDS7433 distance=142' 10532-2639 TDS7533 distance=143' 10541-2333 LDS 320 distance=147' 10357-2606 UC 1963 distance=148' 10539-2640 TDS7540 distance=150' 10537-2321 DON 445 distance=151' 10552-2623 TDS7553 distance=154' 10540-2645 B 2722 distance=154' 10429-2732 RST5348 distance=155' 10536-2308 LDS 318 distance=159' 10522-2248 ARA1785 distance=161' 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 10455-2502 I 502 AB 174 0.1
Show 10455-2502 I 502 AC 140 2.0
Show 10463-2511 DON 434 A,BC 150 18.3 14
Show 10463-2511 DON 434 BC 194 1.6 15
Show 10436-2505 B 204 293 3.3 27
Show 10468-2523 DON 437 320 0.5 27
Show 10455-2529 BRT2983 337 4.0 28
Show 10466-2435 LDS4015 266 49.6 31
Show 10475-2431 TDS7474 55 2.6 41
Show 10486-2510 DON 440 219 0.3 43
Show 10428-2529 DON 430 51 2.0 47
Show 10478-2411 SKF1470 325 3.2 59
Show 10432-2552 B 2720 A,BC 214 71.8 60
Show 10497-2443 WIS 174 119 112.6 60
Show 10432-2552 B 2720 BC 147 3.8 62
Show 10454-2357 TDS7455 88 0.6 65
Show 10480-2602 TDS7476 44 0.9 70
Show 10434-2346 ARA2165 7 13.7 81
Show 10483-2615 UC 1997 95 28.1 83
Show 10402-2419 TVB 230 168 1.8 84
Show 10392-2551 TOK 135 108 6.4 100
Show 10522-2603 LDS4027 49 103.2 109
Show 10514-2341 B 205 90 4.4 113
Show 10513-2624 KPP 612 322 5.6 114
Show 10493-2649 I 503 123 1.2 119
Show 10375-2551 BRT2980 195 5.9 120
Show 10538-2420 B 206 259 1.8 120
Show 10369-2540 UC 1965 146 12.3 123
Show 10549-2452 TDS7550 72 0.5 128
Show 10375-2354 ARA2164 357 6.2 130
Show 10465-2250 CVR 574 200 10.8 133
Show 10454-2249 ARA1784 265 8.4 134
Show 10533-2625 TDS7535 124 0.4 135
Show 10415-2705 B 203 15 1.0 135
Show 10381-2333 LDS4003 AB 347 49.3 135
Show 10410-2301 ARA1782 66 11.6 136
Show 10532-2335 B 1173 139 0.9 136
Show 10541-2617 TDS7543 259 0.5 138
Show 10384-2640 RST 500 332 1.6 139
Show 10383-2639 DAM2470 31 5.3 139
Show 10453-2243 DON1090 151 4.5 140
Show 10433-2720 TDS7433 353 2.4 142
Show 10532-2639 TDS7533 205 2.2 143
Show 10541-2333 LDS 320 252 31.9 147
Show 10357-2606 UC 1963 193 7.3 148
Show 10539-2640 TDS7540 189 2.3 150
Show 10537-2321 DON 445 289 7.8 151
Show 10552-2623 TDS7553 244 0.5 154
Show 10540-2645 B 2722 172 16.0 154
Show 10429-2732 RST5348 195 1.8 155
Show 10536-2308 LDS 318 239 24.5 159

 
 
WDS 10455-2502 : COMPONENTS
 
 
  A B
B pa=174.5°
sep=0.10"
 
C pa=142.7°
sep=1.89"
pa=140.9°
sep=1.80"
 
 
10455-2502 A
 
 
Name HD 93227 Coord arcsec 2000 104532.90-250134.0 Mag 7.78 Spectral class K0IV (yellow-orange)
PmRA -29.00 PmDE 17.0 SAO 179198 HIP 52615
Tycho2 6638-00872-1 HD 93227 CD CD-24 9289 CP CP-24 4557
Tycho2
Tycho2 6638-00872-1 Pflag RAmdeg 161.38699732 DEmdeg -25.02608326
PmRA -36.2 PmDE 13.9 E RAmdeg 4 E DEmdeg 5
E pmRA 1.5 E pmDE 1.4 EpRAm 1991.53 EpDEm 1991.25
Num 8 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.3
Q pmDE 0.9 BTmag 8.634 E BTmag 0.016 VTmag 7.408
E VTmag 0.010 Prox 999 TYC T HIP 52615
CCDM AB RAdeg 161.38708833 DEdeg -25.02611556 EpRA 1990 1.77
EpDE 1990 1.64 E RAdeg 4.3 E DEdeg 5.2 Posflg P
Corr 0.0
SAO
SAO 179198 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 0.009 Vmag 7.5 SpType K0
Double code Source 25 CatNum 8426 DM CD-24 9289
DMcomp BDsup HD 93227 M HD 0
GC RA1950rad 2.80629618 DE1950rad -0.43219523 PmRA2000 -0.0005
PmDE2000 0.013
Hipparcos
Catalog H HIP 52615 Proxy H RAhms 10 45 32.90
DEdms -25 01 34.0 Vmag 7.27 VarFlag R Vmag H
RAdeg 161.387 DEdeg -25.0261 AstroRef * Plx 6.79
CCDM 10456-2502 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 353 Rho 0.251 HD 93227 BD
CD CD-24 9289 CP CP-24 4557 Dm number -24 9289 VIred 0.98
SpType K0IV R SpType Coord arcsec 2000 104532.90-250134.0
Hipparcos 2
HIP 52615 Sn 55 So 3 Nc 2
RArad 2.8167361317 DErad -0.4367881554 Plx 5.37 PmRA -35.39
PmDE 15.88 E RArad 0.57 E DErad 0.39 E Plx 0.71
E pmRA 0.67 E pmDE 0.57 Hpmag 7.4359 E Hpmag 0.001
SHp 0.008 VA 0 BV 1.049 E BV 0.009
VI 1.02
 
 
10455-2502 B
 
 
Coord arcsec 2000 104532.90-250134.1 Mag 8.86 Calc delta mag 1.08 Calc coord yes
 
 
10455-2502 C
 
 
Coord arcsec 2000 104532.98-250135.5 Mag 13.3 Calc delta mag 5.52 Calc coord yes