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Doubles in session


Current system
03261+1229
A 829
HD 21261


Nearby doubles
24' : 03261+1205
HEI 450

31' : 03242+1238
OCC1020AB

34' : 03253+1158
BPM 74

47' : 03248+1311
GWP 465

50' : 03238+1305
GKM9067AB

54' : 03295+1248
SKF 267

58' : 03272+1325
HEI 313

59' : 03264+1131
SKF1431

65' : 03301+1258
BPMA 6

66' : 03303+1254
HDS 438

75' : 03286+1123
BU 879

80' : 03280+1114
SKF1432

80' : 03209+1210
GWP 453

83' : 03231+1339
UC 998

88' : 03301+1123
HDS 437

88' : 03239+1350
OCC 626

93' : 03324+1222
HDS 448

98' : 03266+1406
BPM 75

99' : 03312+1335
GWP 475AB

103' : 03317+1331
BPM 77

105' : 03201+1135
LDS3478

106' : 03322+1133
AG 68

107' : 03212+1347
HDS 420

108' : 03321+1330
LDS3503

115' : 03328+1127
HDS 449

119' : 03200+1347
GWP 451



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.

03261+1229 A 829 (HD 21261)

 
 
03h 26m 08.81s +12° 28' 54.7" P.A. 34.00 sep 0.5 mag 8.82,10.38 Sp G0 dist. 68.73 pc (224.2 l.y.)
 
 
Coord 2000 03261+1229 Discov num A   829 Comp Coord arcsec 2000 03 26 08.81 +12 28 54.7
Date first 1904 Date last 2022 Obs 27
Pa first 41 Pa last 33.9 P.A. Now (θ) 30.9° (calc)
Sep first 0.3 Sep last 0.488 Sep. Now (ρ) 0.425" (calc)
Mag pri 8.82 Mag sec 10.38 delta mag (ΔM) 1.56 Spectral class G0 (yellow)
Pri motion ra -072 Sec motion ra
Pri motion dec -023 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 21261 Constellation Taurus SAO 93433 HIP 16008
Tycho2 0653-00556-1 Gaia DR2 16823940949244160 HD 21261 ADS 2531
BD BD+11 474 Distance 68.73 Distance ly 224.2
 
 
ORBITAL ELEMENTS
 
 
Period (P)111.38y± 3.93 Periastron (T)1985.1y± 0.79 Semi-major axis (a)0.417a± 0.012
Eccentricity (e)0.743± 0.018 Inclination (i)120.6°± 2 Longitude of periastron (ω)77.2°± 1.9
Node (Ω)260.1°± 2.4 Notesn ReferenceHrt2008
Equinox2000 Last observation2003 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 60.0 0.364
2001 58.6 0.372
2002 57.3 0.380
2003 56.0 0.386
2004 54.7 0.392
2005 53.5 0.398
2006 52.3 0.403
2007 51.1 0.407
2008 50.0 0.411
2009 48.8 0.414
2010 47.7 0.417
2011 46.6 0.420
2012 45.5 0.422
2013 44.5 0.424
2014 43.4 0.425
2015 42.4 0.427
2016 41.3 0.428
2017 40.3 0.428
2018 39.2 0.429
2019 38.2 0.429
2020 37.1 0.429
2021 36.1 0.429
2022 35.1 0.429
2023 34.0 0.428
2024 33.0 0.427
2025 31.9 0.426
2026 30.9 0.425
2027 29.8 0.424
2028 28.7 0.423
2029 27.7 0.421
2030 26.6 0.419
2031 25.5 0.418
2032 24.4 0.416
2033 23.3 0.414
2034 22.1 0.412
2035 21.0 0.409
2036 19.9 0.407
2037 18.7 0.405
2038 17.5 0.402
2039 16.3 0.400
2040 15.1 0.397
2041 13.9 0.395
2042 12.7 0.392
2043 11.4 0.389
2044 10.1 0.386
2045 8.8 0.383
2046 7.5 0.381
2047 6.2 0.378
2048 4.8 0.375
2049 3.5 0.372
2050 2.1 0.369


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds03261%2B1229b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 03261+1229 A 829 (HD 21261) : NOTES
 
 
discov_num notes refcode
A 829 Probably ambiguous case, but only one solution has been tested.
 
 
REFERENCES
 
 
refcode metd author reference
Hrt2008 Su j Hartkopf, W.I., Mason, B.D., & Rafferty, T. 2008AJ....135.1334H
Hrt2008 +orb AJ 135, 1334, 2008
 
 
DISCOVERER
 
 
discov author
A Aitken, R.G.
HRT Hartkopf, W.I., McAlister, H.A., Mason, B.D., ten Brummelaar, T.A., Roberts, J.C.,
HRT Jr., Turner, N.H., & Wilson, J.W.
HRT Hartkopf, W.I., W.I., Mason, B.D., Gies, D.R., ten Brummelaar, T.,
HRT McAlister, H.A., Moffat, A.F.J., Shara, M.M., & Wallace, D.J.
HRT Mason, B.D., Martin, C., Hartkopf, W.I., Barry, D.J., Germain, M.E.,
HRT Douglass, G.G., Worley, C.E., ten Brummelaar, T.A., et al.
HRT Hartkopf, W.I., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., Turner, N.H.,
HRT ten Brummelaar, T.A., Prieto, C.M., Ling, J.F., & Franz, O.G.
HRT Mason, B.D., Henry, T.J., Soderblom. D.R., Hartkopf, W.I., Holdenreid, E.R.,
HRT Rafferty, T.J., & Urban, S.E.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
03261+1229 A 829 2003 24 56 0.4 8.82 10.38 G0 +11 474 NO 032608.81+122854.7
03261+1229 A 829 2022 27 34 0.5 8.82 10.38 G0 +11 474 NO 032608.81+122854.7

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

 
 
WDS 03261+1229 A 829 (HD 21261) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03261+1229 A 829 (HD 21261) : MEASURES
 
 
No records found.

 
 
WDS 03261+1229 (HD 21261) : VIRTUAL EYEPIECE
 
 

03261+1229 A 829A mag 8.82 Sp G0 03261+1229 A 829B sep 0.5 P.A. 33.90 mag 10.38 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 03261+1229 (HD 21261) : ALADIN DSS IMAGE @ 03h 26m 08.81s +12° 28' 54.7"
 
 
 
 
WDS 03261+1229 A 829 (HD 21261) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03261+1229 A 829 distance=1' 03261+1205 HEI 450 distance=24' 03242+1238 OCC1020AB distance=31' 03253+1158 BPM 74 distance=34' 03248+1311 GWP 465 distance=47' 03238+1305 GKM9067AB distance=50' 03295+1248 SKF 267 distance=54' 03272+1325 HEI 313 distance=58' 03264+1131 SKF1431 distance=59' 03301+1258 BPMA 6 distance=65' 03303+1254 HDS 438 distance=66' 03286+1123 BU 879 distance=75' 03280+1114 SKF1432 distance=80' 03209+1210 GWP 453 distance=80' 03231+1339 UC 998 distance=83' 03301+1123 HDS 437 distance=88' 03239+1350 OCC 626 distance=88' 03324+1222 HDS 448 distance=93' 03266+1406 BPM 75 distance=98' 03312+1335 GWP 475AB distance=99' 03317+1331 BPM 77 distance=103' 03201+1135 LDS3478 distance=105' 03322+1133 AG 68 distance=106' 03212+1347 HDS 420 distance=107' 03321+1330 LDS3503 distance=108' 03328+1127 HDS 449 distance=115' 03200+1347 GWP 451 distance=119' 03227+1037 GIC 41BC distance=120' 03203+1352 KPP3519 distance=120' 03227+1037 GIC 41AB distance=123' 03227+1037 GIC 41AC distance=123' 03240+1028 LSC 25 distance=126' 03213+1038 HEI 449 distance=132' 03318+1412 LDS3500 distance=133' 03171+1145 GRV 169 distance=139' 03352+1146 GWP 482 distance=140' 03279+1451 NI 6 distance=145' 03263+1455 KPP 98 distance=146' 03245+1003 UC 45 distance=149' 03162+1302 BPMA 5AB distance=150' 03162+1302 DAM1300Aa,Ab distance=150' 03349+1105 KPP 696 distance=155' 03276+0956 CFN 3 distance=155' 03365+1306 GWP 485 distance=157' 03161+1138 WIS 87 distance=157' 03276+0954 J 305 distance=157' 03256+1508 LDS3491 distance=161' 03235+1507 SKF1393Aa,Ab distance=163' 03235+1507 CLZ 21AB distance=163' 03272+0944 HDS 433AB distance=166' 03272+0944 MKT 15Aa,Ab distance=166' 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 03261+1229 A 829 34 0.5 1
Show 03261+1205 HEI 450 52 1.7 24
Show 03242+1238 OCC1020 AB -1 0.1 31
Show 03253+1158 BPM 74 167 27.5 34
Show 03248+1311 GWP 465 73 14.2 47
Show 03238+1305 GKM9067 AB 34 1.5 50
Show 03295+1248 SKF 267 130 11.1 54
Show 03272+1325 HEI 313 99 0.2 58
Show 03264+1131 SKF1431 313 4.1 59
Show 03301+1258 BPMA 6 181 163.2 65
Show 03303+1254 HDS 438 167 0.4 66
Show 03286+1123 BU 879 71 24.5 75
Show 03280+1114 SKF1432 237 2.3 80
Show 03209+1210 GWP 453 215 53.8 80
Show 03231+1339 UC 998 170 9.8 83
Show 03301+1123 HDS 437 2 1.2 88
Show 03239+1350 OCC 626 -1 0.1 88
Show 03324+1222 HDS 448 301 0.4 93
Show 03266+1406 BPM 75 24 119.3 98
Show 03312+1335 GWP 475 AB 155 78.2 99
Show 03317+1331 BPM 77 96 85.9 103
Show 03201+1135 LDS3478 27 17.1 105
Show 03322+1133 AG 68 249 16.9 106
Show 03212+1347 HDS 420 267 6.2 107
Show 03321+1330 LDS3503 195 32.6 108
Show 03328+1127 HDS 449 116 5.1 115
Show 03200+1347 GWP 451 272 6.1 119
Show 03227+1037 GIC 41 BC 263 186.7 120
Show 03203+1352 KPP3519 180 1.8 120
Show 03227+1037 GIC 41 AB 9 170.1 123
Show 03227+1037 GIC 41 AC 312 213.1 123
Show 03240+1028 LSC 25 284 0.6 126
Show 03213+1038 HEI 449 51 0.3 132
Show 03318+1412 LDS3500 319 33.9 133
Show 03171+1145 GRV 169 298 15.1 139
Show 03352+1146 GWP 482 105 24.5 140
Show 03279+1451 NI 6 301 3.9 145
Show 03263+1455 KPP 98 44 4.9 146
Show 03245+1003 UC 45 261 51.5 149
Show 03162+1302 BPMA 5 AB 2 230.3 150
Show 03162+1302 DAM1300 Aa,Ab 338 2.1 150
Show 03349+1105 KPP 696 32 6.2 155
Show 03276+0956 CFN 3 297 1.5 155
Show 03365+1306 GWP 485 263 7.5 157
Show 03161+1138 WIS 87 139 682.4 157
Show 03276+0954 J 305 117 1.7 157
Show 03256+1508 LDS3491 274 2.9 161
Show 03235+1507 SKF1393 Aa,Ab 244 1.5 163
Show 03235+1507 CLZ 21 AB 185 67.7 163
Show 03272+0944 HDS 433 AB 273 0.6 166
Show 03272+0944 MKT 15 Aa,Ab 337 0.0 166

 
 
WDS 03261+1229 : COMPONENTS
 
 
  A
B pa=33.9°
sep=0.49"
 
 
03261+1229 A
 
 
Name HD 21261 Coord arcsec 2000 032608.81+122854.7 Mag 8.82 Spectral class G0 (yellow)
PmRA -72.00 PmDE -23.0 HIP 16008 Tycho2 0653-00556-1
HD 21261 BD BD+11 474
Tycho2
Tycho2 0653-00556-1 Pflag RAmdeg 51.53653517 DEmdeg 12.48180871
PmRA -72.1 PmDE -24.0 E RAmdeg 8 E DEmdeg 9
E pmRA 1.4 E pmDE 1.3 EpRAm 1991.00 EpDEm 1990.69
Num 7 Q RAmdeg 0.8 Q DEmdeg 1.1 Q pmRA 0.8
Q pmDE 1.2 BTmag 9.198 E BTmag 0.020 VTmag 8.533
E VTmag 0.015 Prox 999 TYC T HIP 16008
CCDM AB RAdeg 51.53670556 DEdeg 12.48186361 EpRA 1990 1.70
EpDE 1990 1.65 E RAdeg 8.3 E DEdeg 9.3 Posflg P
Corr -0.3
Hipparcos
Catalog H HIP 16008 Proxy H RAhms 03 26 08.81
DEdms +12 28 54.7 Vmag 8.46 VarFlag R Vmag H
RAdeg 51.5367 DEdeg 12.4819 AstroRef * Plx 13.68
CCDM -75.75 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 78 Rho 0.256 HD BD BD+11 474
CD CP Dm number +11 474 VIred 0.66
SpType G0 R SpType Coord arcsec 2000 032608.81+122854.7
Hipparcos 2
HIP 16008 Sn 55 So 3 Nc 2
RArad 0.8994854186 DErad 0.2178496774 Plx 14.55 PmRA -73.81
PmDE -30.11 E RArad 0.86 E DErad 0.6 E Plx 1.01
E pmRA 1.51 E pmDE 1.41 Hpmag E Hpmag 0.002
SHp 0.013 VA 0 BV 0.584 E BV 0.022
VI 0.66
CCDM
Ccdm 03261+1229 RComp Comp A Note1
Note2 Discov num DRAs 2.82 DDEs -5.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp G0 PmNote *
PmRA -59 PmDE -24 Dm number +11 474 Cat1 BD
Name2 +12 356 Cat2 AGK2/3 HD 21261 M HD
ADS BDS A 2531 M ADS BDS N IDS IDS 03207N1208A
HIC 16008
 
 
03261+1229 B
 
 
Coord arcsec 2000 032608.83+122855.1 Mag 10.38 Delta magnitude 1.56 Coordinate calculated yes
CCDM
Ccdm 03261+1229 RComp Comp B Note1 *
Note2 Discov num A 829 DRAs DDEs
R dRAs Year 1959 Theta 333 Rho 0.4
Obs 9 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2531 M ADS BDS N IDS IDS 03207N1208B
HIC 16008