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Doubles in session


Current system
03178-1407
HU 432
HD 20530


Nearby doubles
6' : 03176-1412
GWP 446AB

43' : 03149-1400
HJ 3558

47' : 03148-1427
HJ 3557

52' : 03212-1359
HJ 3567

59' : 03203-1322
RST3378

61' : 03139-1429
GAL 86

62' : 03202-1457
LDS3479

65' : 03133-1410
TDS2485

79' : 03232-1404
GWP 459AB

81' : 03221-1316
HJ 3569

84' : 03235-1413
RST3381

84' : 03136-1504
LDS3466AB

98' : 03244-1400
BU 12

99' : 03237-1321
KPP1854

100' : 03112-1338
TDS2469

104' : 03190-1549
GWP 448

104' : 03175-1222
J 1456

104' : 03174-1223
UC 975

105' : 03137-1241
KPP2022

112' : 03102-1352
HU 605

123' : 03153-1209
TDS2503

127' : 03118-1537
LDS3464

134' : 03258-1304
HU 21

134' : 03244-1539
A 2909AB

135' : 03248-1533
GWP 466

135' : 03087-1432
GWP 426



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.

03178-1407 HU 432 (HD 20530)

 
 
03h 17m 45.24s -14° 06' 46.6" P.A. 101.00 sep 0.2 mag 10.40,10.40 Sp K0V
 
 
Coord 2000 03178-1407 Discov num HU  432 Comp Coord arcsec 2000 03 17 45.24 -14 06 46.6
Date first 1901 Date last 2020 Obs 8
Pa first 46 Pa last 100.9 P.A. Now (θ) 100.9°
Sep first 0.2 Sep last 0.184 Sep. Now (ρ) 0.184"
Mag pri 10.40 Mag sec 10.40 delta mag (ΔM) 0 Spectral class K0V (yellow-orange)
Pri motion ra +064 Sec motion ra
Pri motion dec +027 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 20530 Constellation Eridanus SAO 148887 Tycho2 5301-01012-1
Gaia DR2 5155370883158999808 HD 20530 ADS 2456
 
 
ORBITAL ELEMENTS
 
 
Period (P)73.67y Periastron (T)1979.23y Semi-major axis (a)0.2017a
Eccentricity (e)0.152 Inclination (i)40.4° Longitude of periastron (ω)223.2°
Node (Ω)45.4° Notes ReferenceTok2020e
Equinox Last observation2019 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 30.6 0.207
2001 34.1 0.211
2002 37.4 0.215
2003 40.5 0.218
2004 43.7 0.220
2005 46.7 0.222
2006 49.7 0.224
2007 52.7 0.224
2008 55.7 0.224
2009 58.6 0.224
2010 61.6 0.223
2011 64.7 0.222
2012 67.7 0.220
2013 70.9 0.217
2014 74.1 0.215
2015 77.4 0.212
2016 80.7 0.208
2017 84.2 0.205
2018 87.9 0.201
2019 91.6 0.197
2020 95.6 0.193
2021 99.6 0.190
2022 103.9 0.186
2023 108.3 0.182
2024 112.9 0.179
2025 117.7 0.175
2026 122.7 0.173
2027 127.8 0.170
2028 133.0 0.168
2029 138.3 0.167
2030 143.7 0.166
2031 149.2 0.165
2032 154.7 0.166
2033 160.1 0.166
2034 165.5 0.167
2035 170.8 0.168
2036 176.1 0.170
2037 181.2 0.172
2038 186.2 0.174
2039 191.1 0.175
2040 195.9 0.177
2041 200.7 0.178
2042 205.3 0.179
2043 210.0 0.180
2044 214.6 0.180
2045 219.3 0.179
2046 223.9 0.178
2047 228.7 0.176
2048 233.6 0.173
2049 238.7 0.170
2050 244.0 0.166


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds03178-1407b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 03178-1407 HU 432 (HD 20530) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb
 
 
DISCOVERER
 
 
discov author
HU Hussey, W.F.
TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
TOK Martinez, M., & Mondaca, E.
TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
TOK Tokovinin, A. & Briceno, C.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
03178-1407 HU 432 1977 6 70 0.2 10.40 10.40 K0V -14 639 031745.24-140646.6
03178-1407 HU 432 2017 7 86 0.2 10.40 10.40 K0V -14 639 031745.24-140646.6
03178-1407 HU 432 2019 7 96 0.2 10.40 10.40 K0V -14 639 031745.24-140646.6
03178-1407 HU 432 2020 8 101 0.2 10.40 10.40 K0V -14 639 O 031745.24-140646.6

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

 
 
WDS 03178-1407 HU 432 (HD 20530) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03178-1407 HU 432 (HD 20530) : MEASURES
 
 
No records found.

 
 
WDS 03178-1407 (HD 20530) : VIRTUAL EYEPIECE
 
 

03178-1407 HU 432A mag 10.4 Sp K0V 03178-1407 HU 432B sep 0.2 P.A. 100.90 mag 10.4 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 03178-1407 (HD 20530) : ALADIN DSS IMAGE @ 03h 17m 45.24s -14° 06' 46.6"
 
 
 
 
WDS 03178-1407 HU 432 (HD 20530) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03178-1407 HU 432 distance=1' 03176-1412 GWP 446AB distance=6' 03149-1400 HJ 3558 distance=43' 03148-1427 HJ 3557 distance=47' 03212-1359 HJ 3567 distance=52' 03203-1322 RST3378 distance=59' 03139-1429 GAL 86 distance=61' 03202-1457 LDS3479 distance=62' 03133-1410 TDS2485 distance=65' 03232-1404 GWP 459AB distance=79' 03232-1404 DAM1303Aa,Ab distance=79' 03221-1316 HJ 3569 distance=81' 03235-1413 RST3381 distance=84' 03136-1504 TDS2487Aa,Ab distance=84' 03136-1504 LDS3466AB distance=84' 03244-1400 BU 12 distance=98' 03237-1321 KPP1854 distance=99' 03112-1338 TDS2469 distance=100' 03190-1549 GWP 448 distance=104' 03175-1222 J 1456 distance=104' 03174-1223 UC 975 distance=104' 03137-1241 KPP2022 distance=105' 03102-1352 HU 605 distance=112' 03153-1209 TDS2503 distance=123' 03118-1537 LDS3464 distance=127' 03258-1304 HU 21 distance=134' 03244-1539 A 2909AB distance=134' 03244-1539 A 2909AB,C distance=134' 03248-1533 GWP 466 distance=135' 03087-1432 GWP 426 distance=135' 03262-1513 GKM9069Aa,Ab distance=140' 03240-1220 BRT2629 distance=141' 03214-1156 RST3379 distance=141' 03108-1550 CAC 2 distance=144' 03277-1422 A 2911 distance=146' 03098-1238 GWP 428 distance=146' 03202-1632 GWP 452 distance=150' 03155-1633 YSC 176 distance=151' 03124-1157 GWP 432AB distance=152' 03124-1157 GWP 433AC distance=152' 03073-1346 CRJ 7 distance=154' 03284-1425 GWP 470 distance=156' 03282-1335 GAL 330 distance=157' 03226-1142 RST3380 distance=162' 03220-1636 LDS3485 distance=162' 03083-1236 STF 357 distance=166' 03067-1319 STF 356 distance=169' 03061-1326 BU 527AB distance=176' 03061-1326 FOX9022AC distance=176' 03054-1432 GWP 418 distance=182' 03213-1112 DAM1302 distance=183' 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 03178-1407 HU 432 101 0.2 1
Show 03176-1412 GWP 446 AB 344 77.5 6
Show 03149-1400 HJ 3558 139 15.6 43
Show 03148-1427 HJ 3557 346 26.4 47
Show 03212-1359 HJ 3567 110 5.3 52
Show 03203-1322 RST3378 344 2.6 59
Show 03139-1429 GAL 86 307 4.3 61
Show 03202-1457 LDS3479 296 204.2 62
Show 03133-1410 TDS2485 242 0.4 65
Show 03232-1404 GWP 459 AB 65 147.8 79
Show 03232-1404 DAM1303 Aa,Ab 314 2.4 79
Show 03221-1316 HJ 3569 212 19.5 81
Show 03235-1413 RST3381 96 0.6 84
Show 03136-1504 TDS2487 Aa,Ab 324 0.6 84
Show 03136-1504 LDS3466 AB 274 25.6 84
Show 03244-1400 BU 12 281 2.3 98
Show 03237-1321 KPP1854 117 14.4 99
Show 03112-1338 TDS2469 311 0.5 100
Show 03190-1549 GWP 448 126 8.9 104
Show 03175-1222 J 1456 320 3.7 104
Show 03174-1223 UC 975 325 40.9 104
Show 03137-1241 KPP2022 328 16.1 105
Show 03102-1352 HU 605 62 2.5 112
Show 03153-1209 TDS2503 79 0.6 123
Show 03118-1537 LDS3464 344 15.0 127
Show 03258-1304 HU 21 39 1.4 134
Show 03244-1539 A 2909 AB 140 0.0 134
Show 03244-1539 A 2909 AB,C 254 17.0 134
Show 03248-1533 GWP 466 348 5.3 135
Show 03087-1432 GWP 426 65 3.1 135
Show 03262-1513 GKM9069 Aa,Ab 121 0.1 140
Show 03240-1220 BRT2629 18 7.2 141
Show 03214-1156 RST3379 236 0.9 141
Show 03108-1550 CAC 2 309 0.3 144
Show 03277-1422 A 2911 108 2.3 146
Show 03098-1238 GWP 428 331 11.1 146
Show 03202-1632 GWP 452 346 20.8 150
Show 03155-1633 YSC 176 274 0.8 151
Show 03124-1157 GWP 432 AB 279 222.6 152
Show 03124-1157 GWP 433 AC 121 40.3 152
Show 03073-1346 CRJ 7 239 1.6 154
Show 03284-1425 GWP 470 147 45.0 156
Show 03282-1335 GAL 330 82 9.6 157
Show 03226-1142 RST3380 138 2.0 162
Show 03220-1636 LDS3485 231 10.5 162
Show 03083-1236 STF 357 295 8.6 166
Show 03067-1319 STF 356 13 15.5 169
Show 03061-1326 BU 527 AB 99 1.4 176
Show 03061-1326 FOX9022 AC 322 59.2 176
Show 03054-1432 GWP 418 248 21.4 182
Show 03213-1112 DAM1302 328 5.4 183

 
 
WDS 03178-1407 : COMPONENTS
 
 
  A
B pa=100.9°
sep=0.18"
 
 
03178-1407 A
 
 
Name HD 20530 Coord arcsec 2000 031745.24-140646.6 Mag 10.4 Spectral class K0V (yellow-orange)
PmRA 64.00 PmDE 27.0 SAO 248773 Tycho2 5301-01012-1
HD 20530 DM CP-64 237
Tycho2
Tycho2 5301-01012-1 Pflag RAmdeg 49.43850999 DEmdeg -14.11295953
PmRA 64.3 PmDE 23.9 E RAmdeg 12 E DEmdeg 16
E pmRA 1.3 E pmDE 1.3 EpRAm 1989.44 EpDEm 1987.30
Num 7 Q RAmdeg 0.4 Q DEmdeg 0.8 Q pmRA 0.4
Q pmDE 0.7 BTmag 10.621 E BTmag 0.035 VTmag 9.657
E VTmag 0.023 Prox 999 TYC T HIP
CCDM RAdeg 49.43835944 DEdeg -14.11301556 EpRA 1990 1.83
EpDE 1990 1.61 E RAdeg 13.3 E DEdeg 18.2 Posflg
Corr 0.0
SAO
SAO 248773 DelFlag RA1950 PmRA1950 0.0023
DE1950 PmDE1950 0.011 Vmag 10.1 SpType G5
Double code Source 43 CatNum 684 DM CP-64 237
DMcomp BDsup HD 20821 M HD 0
GC RA1950rad 0.8592695 DE1950rad -1.11683498 PmRA2000 0.0021
PmDE2000 0.008
CCDM
Ccdm 03178-1407 RComp Comp A Note1
Note2 Discov num DRAs -2.76 DDEs 13.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.3 Sp G5 PmNote *
PmRA 65 PmDE 28 Dm number -14 639 Cat1 BD
Name2 148887 Cat2 SAO HD 20530 M HD
ADS BDS A 2456 M ADS BDS N IDS IDS 03130S1429A
HIC
 
 
03178-1407 B
 
 
Coord arcsec 2000 031745.25-140646.6 Mag 10.4 Coordinate calculated yes
CCDM
Ccdm 03178-1407 RComp Comp B Note1
Note2 Discov num HU 432 DRAs DDEs
R dRAs Year 1925 Theta 032 Rho 0.2
Obs 4 Vmag 10.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2456 M ADS BDS N N IDS IDS 03130S1429B
HIC