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Current system
03446+2754
BU 1041 BC


Nearby doubles
18' : 03444+2812
MET 33AB

28' : 03460+2734
CTI7214

37' : 03466+2728
COU 694

45' : 03456+2839
COU 692

59' : 03463+2850
COU 693

59' : 03413+2832
STF 429

61' : 03493+2759
KPP2599

64' : 03422+2702
LDS6096

66' : 03402+2820
UC 1039AB

67' : 03470+2855
J 27

70' : 03470+2858
UC 1062

71' : 03405+2838
HO 323

72' : 03473+2858
AZC 38

74' : 03392+2757
STF 424

75' : 03416+2655
LDS6095

75' : 03406+2846
STF 427AB

77' : 03477+2649
LDS6113

82' : 03476+2908
UC 1065

94' : 03389+2703
TDS2610

94' : 03513+2831
TDS2671

97' : 03520+2801
COU 696

97' : 03398+2643
GRV 186

98' : 03466+2621
WFC 18

99' : 03511+2847
J 28

102' : 03435+2935
A 989AB

112' : 03390+2917
UC 1037



Selections
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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.

03446+2754 BU 1041 BC

 
 
03h 44m 45.00s +27° 55' 15.8" P.A. 321.00 sep 35.1 mag 6.91,12.42 Sp G2IV dist. 64.72 pc (211.12 l.y.)
 
 
Coord 2000 03446+2754 Discov num BU 1041 Comp BC Coord arcsec 2000 03 44 45.00 +27 55 15.8
Date first 1888 Date last 2017 Obs 18
Pa first 348 Pa last 320.8 P.A. Now (θ) 320.8°
Sep first 7.9 Sep last 35.09 Sep. Now (ρ) 35.09"
Mag pri 6.91 Mag sec 12.42 delta mag (ΔM) 5.51 Spectral class G2IV (yellow)
Pri motion ra +157 Sec motion ra -002
Pri motion dec -165 Sec motion dec -004
Notes N L (See Notes, Linear solution)
rPM=0.994
This double is not physical.
 
 
03446+2754 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 23245 76122 03 44 37 +27 53 52 STTA 38 AB 2017 43 53 135.4 6.78 6.91 0.13
Show 76124 03 44 45 +27 55 16 BU 1041 BC 2017 18 321 35.1 6.91 12.42 5.51 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Taurus SAO 76124 HIP 17482 Tycho2 1807-00067-1
Gaia DR2 71576252759892480 HD 23257 GC 4472 BD BD+27 558
Distance 64.72 Distance ly 211.12
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier03447+2755 STT4038 B
coord_arcsec_2000034444.90+275517.3
Period (P)699d± 28 Periastron (T)48535d (1991.76y)± 228 Semi-major axis (a)13.2m± 2.5
Eccentricity (e)0.27± 0.22 Inclination (i)132°± 10 Longitude of periastron (ω)100°± 96
Node (Ω)205°± 94 Notes ReferenceGln2007
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 341.0 0.012
2001-01-01 200.1 0.012
2002-01-01 327.9 0.012
2003-01-01 186.5 0.011
2004-01-01 313.8 0.011
2005-01-01 166.8 0.009
2006-01-01 299.2 0.011
2007-01-01 134.9 0.007
2008-01-01 284.7 0.011
2009-01-01 92.7 0.007
2010-01-01 270.9 0.012
2011-01-01 59.9 0.008
2012-01-01 258.4 0.012
2013-01-01 39.2 0.010
2014-01-01 247.0 0.013
2015-01-01 24.4 0.012
2016-01-01 236.5 0.013
2017-01-01 12.0 0.012
2018-01-01 226.7 0.014
2019-01-01 0.3 0.013
2020-01-01 217.1 0.014
2021-01-01 348.5 0.012
2022-01-01 206.9 0.013
2023-01-01 335.9 0.012
2024-01-01 195.1 0.012
2025-01-01 322.4 0.011
2026-01-01 179.6 0.010
2027-01-01 308.0 0.011
2028-01-01 155.9 0.008
2029-01-01 293.4 0.011
2030-01-01 118.3 0.006


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


 
  


wds03447%2B2755r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 03446+2754 BU 1041 BC : NOTES
 
 
discov_num notes refcode
STTA 38 Optical with BU 1041BC, which is BD+27@558, at 03 44.7 +27 55.
AB: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
BU 1041BC The B component has both an astrometric and a spectroscopic orbit Gln2007
which are not associated with the optical BC pair. Grf2015c
 
 
REFERENCES
 
 
refcode metd author reference
Gln2007 orb - Goldin, A. & Makarov, V.V. 2007ApJS..173..137G
Gln2007 ApJS 173, 137, 2007
Gln2007 (Note: Astrometric orbits based on merged NDAC and FAST reductions of Hipparcos
Gln2007 data. Values of T0 are relative to 1991.25 = JD 2448349.0625)
Grf2015c X - Griffin, R.F. 2015Obs...135..193G
Grf2015c +not Observatory 135, 193, 2015
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03446+2754 BU 1041 BC 1999 7 321 31.6 6.91 13.40 G2IV LD 034445.00+275515.8
03446+2754 BU 1041 BC 2001 9 320 31.5 6.91 13.40 G2IV NLD 034445.00+275515.8
03446+2754 BU 1041 BC 2013 10 320 33.9 6.91 12.42 G2IV NL 034445.00+275515.8
03446+2754 BU 1041 BC 2017 12 321 35.1 6.91 12.42 G2IV NL 034445.00+275515.8

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

 
 
WDS 03446+2754 BU 1041 BC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03446+2754 BU 1041 BC : MEASURES
 
 
No records found.

 
 
WDS 03446+2754 : VIRTUAL EYEPIECE
 
 

03446+2754 STTA 38A mag 6.78 Sp F4V 03446+2754 BU 1041B sep 133.3 P.A. 50.80 mag 6.91 Sp G2IV 03446+2754 BU 1041C sep 139.4 P.A. 36.90 mag 12.42 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 03446+2754 : ALADIN DSS IMAGE @ 03h 44m 45.00s +27° 55' 15.8"
 
 
 
 
WDS 03446+2754 BU 1041 BC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03446+2754 BU 1041BC distance=0' 03446+2754 STTA 38AB distance=3' 03444+2812 A 1826Aa,Ab distance=18' 03444+2812 MET 33AB distance=18' 03460+2734 CTI7214 distance=28' 03466+2728 COU 694 distance=37' 03456+2839 COU 692 distance=45' 03463+2850 COU 693 distance=59' 03413+2832 STF 429 distance=59' 03493+2759 KPP2599 distance=61' 03422+2702 LDS6096 distance=64' 03402+2820 UC 1039AB distance=66' 03402+2820 UC 1039AC distance=66' 03402+2820 UC 1039BC distance=66' 03470+2855 J 27 distance=67' 03470+2858 UC 1062 distance=70' 03405+2838 HO 323 distance=71' 03473+2858 AZC 38 distance=72' 03392+2757 STF 424 distance=74' 03416+2655 LDS6095 distance=75' 03406+2846 STF 427AB distance=75' 03477+2649 LDS6113 distance=77' 03476+2908 UC 1065 distance=82' 03389+2703 TDS2610 distance=94' 03513+2831 TDS2671 distance=94' 03520+2801 COU 696 distance=97' 03398+2643 GRV 186 distance=97' 03466+2621 WFC 18 distance=98' 03511+2847 J 28 distance=99' 03435+2935 A 989AB distance=102' 03435+2935 A 989AC distance=102' 03390+2917 UC 1037 distance=112' 03445+2603 LDS6102 distance=113' 03493+2930 MLB 684 distance=113' 03425+2946 A 987 distance=115' 03466+2950 BRT 233 distance=116' 03513+2633 LDS3539 distance=120' 03372+2646 LDS6089 distance=122' 03414+2602 TDS2629 distance=123' 03536+2718 OCC9003 distance=123' 03495+2608 LDS6117 distance=124' 03490+2605 LDS6115 distance=124' 03459+2552 BOV 9AB distance=125' 03459+2552 BOV 9AC distance=125' 03353+2751 TDS2592 distance=126' 03502+2939 FOX 136 distance=126' 03540+2822 COU 697 distance=126' 03374+2632 COU 690 distance=129' 03513+2621 A 1830AB distance=129' 03513+2621 GRV 195AC distance=129' 03350+2755 AZC 35 distance=129' 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 03446+2754 BU 1041 BC 321 35.1
Show 03446+2754 STTA 38 AB 53 135.4 3
Show 03444+2812 A 1826 Aa,Ab 222 0.6 18
Show 03444+2812 MET 33 AB 313 5.7 18
Show 03460+2734 CTI7214 263 69.5 28
Show 03466+2728 COU 694 136 2.5 37
Show 03456+2839 COU 692 318 1.7 45
Show 03463+2850 COU 693 347 0.6 59
Show 03413+2832 STF 429 105 16.8 59
Show 03493+2759 KPP2599 22 23.6 61
Show 03422+2702 LDS6096 283 169.8 64
Show 03402+2820 UC 1039 AB 3 11.7 66
Show 03402+2820 UC 1039 AC 46 48.6 66
Show 03402+2820 UC 1039 BC 58 40.9 66
Show 03470+2855 J 27 59 4.2 67
Show 03470+2858 UC 1062 249 46.3 70
Show 03405+2838 HO 323 208 16.5 71
Show 03473+2858 AZC 38 80 11.8 72
Show 03392+2757 STF 424 313 10.0 74
Show 03416+2655 LDS6095 36 40.5 75
Show 03406+2846 STF 427 AB 207 7.0 75
Show 03477+2649 LDS6113 143 68.3 77
Show 03476+2908 UC 1065 25 35.7 82
Show 03389+2703 TDS2610 348 1.5 94
Show 03513+2831 TDS2671 84 0.4 94
Show 03520+2801 COU 696 22 0.3 97
Show 03398+2643 GRV 186 284 31.7 97
Show 03466+2621 WFC 18 337 10.2 98
Show 03511+2847 J 28 189 3.2 99
Show 03435+2935 A 989 AB 357 3.2 102
Show 03435+2935 A 989 AC 93 58.8 102
Show 03390+2917 UC 1037 231 34.4 112
Show 03445+2603 LDS6102 176 105.8 113
Show 03493+2930 MLB 684 299 1.5 113
Show 03425+2946 A 987 190 1.1 115
Show 03466+2950 BRT 233 12 3.9 116
Show 03513+2633 LDS3539 202 4.8 120
Show 03372+2646 LDS6089 170 60.5 122
Show 03414+2602 TDS2629 270 1.5 123
Show 03536+2718 OCC9003 278 0.0 123
Show 03495+2608 LDS6117 81 196.8 124
Show 03490+2605 LDS6115 309 88.5 124
Show 03459+2552 BOV 9 AB 273 1.8 125
Show 03459+2552 BOV 9 AC 277 1.6 125
Show 03353+2751 TDS2592 96 2.1 126
Show 03502+2939 FOX 136 302 28.1 126
Show 03540+2822 COU 697 227 1.2 126
Show 03374+2632 COU 690 172 4.2 129
Show 03513+2621 A 1830 AB 194 0.4 129
Show 03513+2621 GRV 195 AC 330 60.8 129
Show 03350+2755 AZC 35 122 12.2 129

 
 
WDS 03446+2754 : COMPONENTS
 
 
  A B
B pa=50.8°
sep=133.30"
 
C pa=36.9°
sep=139.39"
pa=324.2°
sep=33.52"
 
 
03446+2754 A
 
 
Name HD 23245 Coord arcsec 2000 034437.21+275351.5 Mag 6.78 Spectral class F4V (yellow-white)
PmRA -47.00 PmDE -76.0 SAO 76122 HIP 17470
Tycho2 1807-00121-1 HD 23245 GC 4468 BD BD+27 556
Tycho2
Tycho2 1807-00121-1 Pflag RAmdeg 56.15492915 DEmdeg 27.89744933
PmRA -47.1 PmDE -75.7 E RAmdeg 4 E DEmdeg 5
E pmRA 0.9 E pmDE 0.8 EpRAm 1991.41 EpDEm 1990.76
Num 17 Q RAmdeg 0.5 Q DEmdeg 0.8 Q pmRA 0.6
Q pmDE 0.8 BTmag 7.191 E BTmag 0.016 VTmag 6.778
E VTmag 0.011 Prox 999 TYC T HIP 17470
CCDM RAdeg 56.15505028 DEdeg 27.89762917 EpRA 1990 1.81
EpDE 1990 1.45 E RAdeg 4.1 E DEdeg 5.2 Posflg
Corr 0.1
SAO
SAO 76122 DelFlag RA1950 PmRA1950 -0.0024
DE1950 PmDE1950 -0.072 Vmag 6.7 SpType F0
Double code Source 70 CatNum 4468 DM BD+27 556
DMcomp BDsup HD 23245 M HD 0
GC 4468 RA1950rad 0.96680361 DE1950rad 0.48418924 PmRA2000 -0.0025
PmDE2000 -0.075
Hipparcos
Catalog H HIP 17470 Proxy RAhms 03 44 37.21
DEdms +27 53 51.5 Vmag 6.75 VarFlag R Vmag H
RAdeg 56.1551 DEdeg 27.8976 AstroRef Plx 15.67
CCDM 03447+2754 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 23245 BD BD+27 556
CD CP Dm number +27 556 VIred 0.43
SpType F0 R SpType Coord arcsec 2000 034437.21+275351.5
Hipparcos 2
HIP 17470 Sn 5 So 0 Nc 1
RArad 0.9800906707 DErad 0.4869055709 Plx 17.55 PmRA -47.21
PmDE -75.92 E RArad 0.5 E DErad 0.27 E Plx 0.5
E pmRA 0.69 E pmDE 0.58 Hpmag 6.8408 E Hpmag 0.0006
SHp 0.007 VA 0 BV 0.37 E BV 0.015
VI 0.43
 
 
03446+2754 B
 
 
Coord arcsec 2000 034445.00+275515.8 Coord calc 034445.00+275515.8 Mag 6.91 Spectral class G2IV (yellow)
PmRA 157.00 PmDE -165.0 SAO 76124 HIP 17482
Tycho2 1807-00067-1 HD 23257 GC 4472 BD BD+27 558
Calc delta mag 0.13
Tycho2
Tycho2 1807-00067-1 Pflag RAmdeg 56.18753471 DEmdeg 27.92107884
PmRA 164.1 PmDE -155.0 E RAmdeg 4 E DEmdeg 6
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.60 EpDEm 1990.97
Num 13 Q RAmdeg 1.5 Q DEmdeg 1.3 Q pmRA 1.6
Q pmDE 1.3 BTmag 7.651 E BTmag 0.016 VTmag 6.910
E VTmag 0.011 Prox 999 TYC T HIP 17482
CCDM RAdeg 56.18711361 DEdeg 27.92144611 EpRA 1990 1.84
EpDE 1990 1.48 E RAdeg 4.3 E DEdeg 5.5 Posflg
Corr 0.0
SAO
SAO 76124 DelFlag RA1950 PmRA1950 0.0121
DE1950 PmDE1950 -0.125 Vmag 7 SpType G0
Double code Source 70 CatNum 4472 DM BD+27 558
DMcomp BDsup HD 23257 M HD 0
GC 4472 RA1950rad 0.96730727 DE1950rad 0.48462921 PmRA2000 0.012
PmDE2000 -0.129
Hipparcos
Catalog H HIP 17482 Proxy RAhms 03 44 44.90
DEdms +27 55 17.3 Vmag 6.86 VarFlag R Vmag H
RAdeg 56.1871 DEdeg 27.9215 AstroRef Plx 16.97
CCDM 03447+2754 N CCDM I Nsys 2 Ncomp 1
MultFlag X Source Qual M HIP
Theta Rho HD 23257 BD BD+27 558
CD CP Dm number +27 558 VIred 0.71
SpType G2IV R SpType Coord arcsec 2000 034444.90+275517.3
Hipparcos 2
HIP 17482 Sn 1 So 2 Nc 1
RArad 0.9806495373 DErad 0.4873214165 Plx 15.45 PmRA 156.81
PmDE -164.74 E RArad 1.6 E DErad 0.86 E Plx 1.68
E pmRA 2.23 E pmDE 1.83 Hpmag 6.9898 E Hpmag 0.0013
SHp 0.008 VA 0 BV 0.642 E BV 0.002
VI 0.71
 
 
03446+2754 C
 
 
Coord arcsec 2000 034443.52+275543.0 Mag 12.42 PmRA -2.00 PmDE -4.0
Calc delta mag 5.64 Calc coord yes