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Doubles in session


Current system
04218+1949
KNT 2
U Tau


Nearby doubles
15' : 04221+1934
KOH 9AB

17' : 04220+1932
GHE 6AB

19' : 04221+2007
LDS3581

20' : 04218+1929
SIG 1

21' : 04217+1928
BU 9004

25' : 04201+1953
LDS1164

25' : 04203+1937
TDS2828

35' : 04242+1959
LDS3583

41' : 04216+2029
LDS5543AB

53' : 04255+1942
COU 565

53' : 04255+1946
STJ 27

61' : 04224+2049
BU 87

62' : 04258+2012
LDS2235

63' : 04174+1945
LDS5536

63' : 04210+2050
LDS3578

64' : 04249+1903
OCC 921

66' : 04222+1844
SLE 270

69' : 04170+1941
HO 328

70' : 04207+2056
LDS2226

70' : 04252+1858
RAO 546

71' : 04255+1901
HEI 456

72' : 04175+1911
A 2350

74' : 04215+2102
OCC 684

75' : 04235+2059
CHR 16AB

77' : 04174+2033
KPP3562

77' : 04266+1912
GWP 585



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.

04218+1949 KNT 2 (U Tau)

 
 
04h 21m 50.10s +19° 48' 48.6" P.A. 25.00 sep 3.3 mag 10.72,10.75 Sp F5
 
 
Coord 2000 04218+1949 Discov num KNT   2 Comp Coord arcsec 2000 04 21 50.10 +19 48 48.6
Date first 1868 Date last 2016 Obs 22
Pa first 22 Pa last 24.5 P.A. Now (θ) 24.5°
Sep first 3.1 Sep last 3.26 Sep. Now (ρ) 3.26"
Mag pri 10.72 Mag sec 10.75 delta mag (ΔM) 0.03 Spectral class F5 (yellow-white)
Pri motion ra +005 Sec motion ra +014
Pri motion dec -042 Sec motion dec -023
Notes N (See Notes)
rPM=0.497
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name U Tau Constellation Taurus Tycho2 1272-00656-1 Gaia DR2 48252896715099520
HD 284410 ADS 3150
 
 
WDS 04218+1949 KNT 2 (U Tau) : NOTES
 
 
discov_num notes refcode
KNT 2 LDS2228. The variable U Tau.
 
 
REFERENCES
 
 
refcode metd author reference
Knt1865 - Knott, G. 1865MNRAS..25..274K
Knt1865 MNRAS 25, 274, 1865 (data also in MemRAS 43, 75, 1877) 1877MmRAS..43...75K
Knt1866 - Knott, G. 1866MNRAS..26..243K
Knt1866 MNRAS 26, 243, 1866 (data also in MemRAS 43, 75, 1877) 1877MmRAS..43...75K
Knt1868a - Knott, G. 1868MNRAS..28...47K
Knt1868a MNRAS 28, 47, 1868 (data also in MemRAS 43, 75, 1877) 1877MmRAS..43...75K
Knt1868b - Knott, G. 1868MNRAS..29..104K
Knt1868b MNRAS 29, 104, 1868 (data also in MemRAS 43, 75, 1877) 1877MmRAS..43...75K
Knt1872 - Knott, G. 1872MNRAS..32..222K
Knt1872 MNRAS 32, 222, 1872 (data also in MemRAS 43, 75, 1877) 1877MmRAS..43...75K
Knt1873 Ma - Knott, G. 1873MNRAS..33..351K
Knt1873 MNRAS 33, 351, 1873
Knt1877 Ma j Knott, G. 1877MmRAS..43...75K
Knt1877 MemRAS 43, 75, 1877
Knt1878A Ma - Knott, G. 1878MNRAS..38..408B
Knt1878A cited by Burnham (MNRAS 38, 408, 1878)
Knt1879A Ma - Knott, G. 1880Obs.....3...53G
Knt1879A cited by Gledhill (Obs. 3, 53, 1879)
Knt1880A Ma - Knott, G. 1880Obs.....2..605H
Knt1880A cited by Hunt (Obs. 3, 605, 1880)
Knt1881 Ma - Knott, G. 1881Obs.....4..184K
Knt1881 Obs. 4, 184, 1881 (see also Obs. 4, 212, 1881) 1881Obs.....4..212K
Knt1906A Ma - Knott, G. 1906MmRAS..56....1L
Knt1906A cited by Lewis (MemRAS 56, 1, 1906)
Knt1937A Ma - Knott, G. 1937AnLei..18....1S
Knt1937A cited by Strand (Ann. Sterrew. Leiden 18, 1937)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04218+1949 KNT 2 1999 17 24 3.3 10.72 10.75 F5 N D 042150.10+194848.6
04218+1949 KNT 2 2009 18 25 3.3 10.72 10.75 F5 N D 042150.10+194848.6
04218+1949 KNT 2 2015 20 24 3.3 10.72 10.75 F5 N 042150.10+194848.6
04218+1949 KNT 2 2016 22 25 3.3 10.72 10.75 F5 N 042150.10+194848.6

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

 
 
WDS 04218+1949 KNT 2 (U Tau) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04218+1949 KNT 2 (U Tau) : MEASURES
 
 
No records found.

 
 
WDS 04218+1949 (U Tau) : VIRTUAL EYEPIECE
 
 

04218+1949 KNT 2A mag 10.72 Sp F5 04218+1949 KNT 2B sep 3.2 P.A. 23.20 mag 10.75 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 04218+1949 (U Tau) : ALADIN DSS IMAGE @ 04h 21m 50.10s +19° 48' 48.6"
 
 
 
 
WDS 04218+1949 KNT 2 (U Tau) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04218+1949 KNT 2 distance=0' 04221+1934 KOH 9AB distance=15' 04221+1934 DAE 25AC distance=15' 04220+1932 GHE 6AB distance=17' 04220+1932 GHE 6A,Ba distance=17' 04220+1932 GHE 6A,Bb distance=17' 04220+1932 NSE 1AC distance=17' 04220+1932 KRS 2Ba,Bb distance=17' 04220+1932 CSE 1AD distance=17' 04221+2007 LDS3581 distance=19' 04218+1929 SIG 1 distance=20' 04217+1928 BU 9004 distance=21' 04201+1953 LDS1164 distance=25' 04203+1937 TDS2828 distance=25' 04242+1959 LDS3583 distance=35' 04216+2029 LDS5543AB distance=41' 04216+2029 SKF1934Aa,Ab distance=41' 04255+1942 COU 565 distance=53' 04255+1946 STJ 27 distance=53' 04224+2049 BU 87 distance=61' 04258+2012 LDS2235 distance=62' 04174+1945 LDS5536 distance=63' 04210+2050 LDS3578 distance=63' 04249+1903 OCC 921 distance=64' 04222+1844 SLE 270 distance=66' 04170+1941 HO 328 distance=69' 04207+2056 LDS2226 distance=70' 04252+1858 RAO 546 distance=70' 04255+1901 HEI 456 distance=71' 04175+1911 A 2350 distance=72' 04215+2102 OCC 684 distance=74' 04235+2059 CHR 16AB distance=75' 04174+2033 KPP3562 distance=77' 04266+1912 GWP 585 distance=77' 04203+1833 LDS5540AB distance=79' 04203+1833 LDS5540AC distance=79' 04173+2035 LDS5535AB distance=80' 04173+2035 LDS5535AC distance=80' 04259+1852 BU 1185 distance=81' 04196+2104 HDS 553 distance=82' 04167+1909 LDS5530 distance=83' 04270+2030 LDS2237AB distance=83' 04270+2030 LDS2237BC distance=84' 04270+1907 STF 546 distance=85' 04276+1927 RED 5 distance=85' 04223+1820 LDS2229 distance=89' 04214+2118 LDS2227 distance=90' 04256+1838 COU2681AB distance=90' 04256+1838 GII 129Aa,Ab distance=90' 04154+1948 UC 1142 distance=91' 04200+1820 LDS2225 distance=94' 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 04218+1949 KNT 2 25 3.3
Show 04221+1934 KOH 9 AB 317 12.0 15
Show 04221+1934 DAE 25 AC 187 7.7 15
Show 04220+1932 GHE 6 AB 191 0.7 17
Show 04220+1932 GHE 6 A,Ba 195 0.7 17
Show 04220+1932 GHE 6 A,Bb 195 0.6 17
Show 04220+1932 NSE 1 AC 358 0.3 17
Show 04220+1932 KRS 2 Ba,Bb 20 0.1 17
Show 04220+1932 CSE 1 AD 199 0.1 17
Show 04221+2007 LDS3581 179 14.4 19
Show 04218+1929 SIG 1 75 0.2 20
Show 04217+1928 BU 9004 46 55.8 21
Show 04201+1953 LDS1164 139 30.2 25
Show 04203+1937 TDS2828 264 3.1 25
Show 04242+1959 LDS3583 296 29.0 35
Show 04216+2029 LDS5543 AB 89 113.6 41
Show 04216+2029 SKF1934 Aa,Ab 224 1.2 41
Show 04255+1942 COU 565 136 0.7 53
Show 04255+1946 STJ 27 344 1.5 53
Show 04224+2049 BU 87 168 1.9 61
Show 04258+2012 LDS2235 112 27.6 62
Show 04174+1945 LDS5536 357 12.1 63
Show 04210+2050 LDS3578 351 44.4 63
Show 04249+1903 OCC 921 -1 0.1 64
Show 04222+1844 SLE 270 98 11.0 66
Show 04170+1941 HO 328 358 0.4 69
Show 04207+2056 LDS2226 5 21.1 70
Show 04252+1858 RAO 546 140 0.8 70
Show 04255+1901 HEI 456 221 2.9 71
Show 04175+1911 A 2350 127 0.6 72
Show 04215+2102 OCC 684 -1 0.1 74
Show 04235+2059 CHR 16 AB 1 0.2 75
Show 04174+2033 KPP3562 156 6.2 77
Show 04266+1912 GWP 585 183 37.5 77
Show 04203+1833 LDS5540 AB 266 264.2 79
Show 04203+1833 LDS5540 AC 266 306.8 79
Show 04173+2035 LDS5535 AB 299 180.7 80
Show 04173+2035 LDS5535 AC 157 6.0 80
Show 04259+1852 BU 1185 203 0.3 81
Show 04196+2104 HDS 553 24 0.8 82
Show 04167+1909 LDS5530 199 34.7 83
Show 04270+2030 LDS2237 AB 339 42.8 83
Show 04270+2030 LDS2237 BC 55 14.0 84
Show 04270+1907 STF 546 182 7.0 85
Show 04276+1927 RED 5 162 0.1 85
Show 04223+1820 LDS2229 234 3.5 89
Show 04214+2118 LDS2227 13 65.2 90
Show 04256+1838 COU2681 AB 253 1.1 90
Show 04256+1838 GII 129 Aa,Ab 171 0.2 90
Show 04154+1948 UC 1142 105 55.6 91
Show 04200+1820 LDS2225 229 5.8 94

 
 
WDS 04218+1949 : COMPONENTS
 
 
  A
B pa=23.2°
sep=3.23"
 
 
04218+1949 A
 
 
Componente originario normalizzato AB Name U Tau Coord arcsec 2000 042150.10+194848.6 Mag 10.72
Spectral class F5 (yellow-white) PmRA 5.00 PmDE -42.0 Tycho2 1272-00656-1
HD 284410 ADS 3150 DM BD+19 705
Tycho2
Tycho2 1272-00656-1 Pflag RAmdeg 65.45876490 DEmdeg 19.81348917
PmRA 5.2 PmDE -42.1 E RAmdeg 37 E DEmdeg 49
E pmRA 1.6 E pmDE 1.6 EpRAm 1985.20 EpDEm 1979.95
Num 3 Q RAmdeg 1.1 Q DEmdeg 0.3 Q pmRA 1.1
Q pmDE 0.3 BTmag 11.350 E BTmag 0.076 VTmag 10.715
E VTmag 0.068 Prox 33 TYC T HIP
CCDM RAdeg 65.45875167 DEdeg 19.81359139 EpRA 1990 1.64
EpDE 1990 1.27 E RAdeg 37.9 E DEdeg 51.7 Posflg
Corr -0.2
CCDM
Ccdm 04218+1949 RComp Comp A Note1
Note2 Discov num DRAs 2.13 DDEs -12.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.9 Sp PmNote *
PmRA 4 PmDE -76 Dm number +19 705 Cat1 BD
Name2 +19 340 Cat2 AGK2/3 HD M HD
ADS BDS A 3150 M ADS BDS N IDS IDS 04160N1935A
HIC
 
 
04218+1949 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 042150.19+194851.6 Mag 10.75 PmRA 14.00
PmDE -23.0 Tycho2 1272-00656-2 Calc delta mag 0.03 Calc coord yes
Tycho2
Tycho2 1272-00656-2 Pflag RAmdeg 65.45918387 DEmdeg 19.81431384
PmRA 9.5 PmDE -42.6 E RAmdeg 38 E DEmdeg 50
E pmRA 1.6 E pmDE 1.6 EpRAm 1984.88 EpDEm 1979.57
Num 3 Q RAmdeg 2.3 Q DEmdeg 1.4 Q pmRA 2.3
Q pmDE 1.4 BTmag 11.304 E BTmag 0.075 VTmag 10.745
E VTmag 0.072 Prox 33 TYC HIP
CCDM RAdeg 65.45916056 DEdeg 19.81441722 EpRA 1990 1.64
EpDE 1990 1.27 E RAdeg 38.6 E DEdeg 53.1 Posflg
Corr -0.2
CCDM
Ccdm 04218+1949 RComp Comp B Note1
Note2 Discov num KNT 2 DRAs DDEs
R dRAs Year 1868 Theta 203 Rho 3.1
Obs 12 Vmag 10.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 3150 M ADS BDS N IDS IDS 04160N1935B
HIC