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Doubles in session


Current system
04220+1932
NSE 1 AC


Nearby doubles
3' : 04221+1934
KOH 9AB

4' : 04218+1929
SIG 1

6' : 04217+1928
BU 9004

17' : 04218+1949
KNT 2

25' : 04203+1937
TDS2828

34' : 04201+1953
LDS1164

35' : 04221+2007
LDS3581

41' : 04242+1959
LDS3583

49' : 04222+1844
SLE 270

51' : 04255+1942
COU 565

52' : 04249+1903
OCC 921

53' : 04255+1946
STJ 27

58' : 04252+1858
RAO 546

58' : 04216+2029
LDS5543AB

59' : 04255+1901
HEI 456

64' : 04203+1833
LDS5540AB

67' : 04174+1945
LDS5536

67' : 04175+1911
A 2350

68' : 04258+2012
LDS2235

69' : 04259+1852
BU 1185

69' : 04266+1912
GWP 585

71' : 04170+1941
HO 328

72' : 04223+1820
LDS2229

76' : 04270+1907
STF 546

76' : 04256+1838
COU2681AB

78' : 04224+2049
BU 87



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.

04220+1932 NSE 1 AC

 
 
04h 21m 59.42s +19° 32' 06.5" P.A. 358.00 sep 0.3 mag 9.60,14.00 Sp G5V dist. 182.48 pc (595.25 l.y.)
 
 
Coord 2000 04220+1932 Discov num NSE   1 Comp AC Coord arcsec 2000 04 21 59.42 +19 32 06.5
Date first 1984 Date last 1984 Obs 1
Pa first 358 Pa last 358 P.A. Now (θ) 358°
Sep first 0.3 Sep last 0.27 Sep. Now (ρ) 0.27"
Mag pri 9.60 Mag sec 14.00 delta mag (ΔM) 4.4 Spectral class G5V (yellow)
Pri motion ra +015 Sec motion ra
Pri motion dec -014 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
04220+1932 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show T Tau 04 21 59 +19 32 06 GHE 6 AB 2002 71 191 0.7 5.50 8.10 2.60 Y
Show 04 21 59 +19 32 06 GHE 6 A,Ba 2019 66 195 0.7 5.50 8.20 2.70
Show 04 21 59 +19 32 06 GHE 6 A,Bb 2019 50 195 0.6 5.50 10.30 4.80
Show 04 21 59 +19 32 06 NSE 1 AC 1984 1 358 0.3 9.60 14.00 4.40 <===
Show 04 21 59 +19 32 06 CSE 1 AD 2015 3 199 0.1 9.60 14.50 4.90
Show 04 21 59 +19 32 06 KRS 2 Ba,Bb 2019 80 20 0.1 8.20 10.30 2.10 Y
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name T Tau Constellation Taurus HIP 20390 Tycho2 1272-00470-1
Gaia DR2 48192969034959232 HD 284419 BD BD+19 706 Distance 182.48
Distance ly 595.25
 
 
WDS 04220+1932 NSE 1 AC : NOTES
 
 
discov_num notes refcode
GHE 6 Components A, Ba, and Bb of this system are also commonly designated
as N, Sa, and Sb, respectively, due to the north-south orientation of
the wider pair.
AB: Measure of 1982.5 made by the VLA at radio wavelengths. Scw1984
Measure of 1983.75 made by the VLA at radio wavelengths. Scw1986
Measures of Johnston et al. and Loinard et al. made by the VLA at Jnt2003
radio wavelengths. Loi2003
AB: Rho and theta errors for Ghez et al. (1995), Furlan et al. (2003), Ghe1995
and Roddier et al. (2000) measures have been added/updated as noted by Fun2003
Koehler et al. (2008). Koehler et al. derive a preliminary orbit for Rod2000
the AB pair, yielding a system mass of 5.57 +0.11/-0.29 Msun. Koh2008b
A,Ba: The 2000.886 Duchene et al. (2002) theta value was corrected by Dch2002
Duchene et al (2006). Also, the Duchene et al. (2006) theta value for Dch2006
2005.801 was changed by 90deg to correct for the orientation of the
camera (Schaefer, priv. comm. cited by Koehler et al. 2008) Koh2008b
KRS 2 Ba,Bb: Tamazian derives a total system mass of 2.82 +/- 0.74 Msun, Tam2005
consistent with the IRC model of Koresko et al. (1997). Krs1997
T Tau Sa-Sb orbit gives range 1991-2001 for T, 0.09-0.87 for e,
11-60 for i. Values for P and a are lower limits. Sfr2006
Duchene et al. (2006) derive masses for the Ba and Bb components of Dch2006
2.73 +/- 0.31 and 0.61 +/- 0.17 Msun, respectively.
Ba,Bb: The 2000.886 Duchene et al. (2002) theta value was corrected by Dch2002
Duchene et al (2006) Dch2006
The 2002.829 Schaefer et al. (2006) measure is a reanalysis of data Sfr2006
from Beck et al. (2004). Bck2004
Koehler et al. (2008) derive a system mass of 2.96 +0.15/-0.24 Msun Koh2008b
and individual masses of 2.13 +0.14/-0.20 and 0.83 +0.10/-0.11 Msun
for the Ba and Bb components, respectively.
Ba,Bb: The Schaefer et al. (2014) orbit, combined with a VLBA parallax
of 6.90 +/- 0.09 mas (147.6 +/- 0.6pc; Loinard et al. 2007, ApJ 671,
546) yields a total mass for Ba+Bb of 2.70 +/- 0.22 Msun. Sfr2014
Ba,Bb: Csepany et al. (2015) generated new orbital parameters for T
Tau N-S (KRS 2Ba,Bb), but their grid search yields a wide range of
possible solutions (P 475-27000y, a 0.57-16.8", etc.) Cse2015b
Based on the new orbit and the Gaia parallax the masses of Ba(Bb) is Sfr2020
is 2.049(0.430) +/- 0.137(0.055) \msun. Using the slightly grater
distance from the VLBA parallax the result is 2.268(0.476) +/-
0.147(0.060) \msun. The brightnesa of Ba and Bb are both variable.
 
 
REFERENCES
 
 
refcode metd author reference
Bck2004 Ci j Beck, T.L., Schaefer, G.H., Simon, M., Prato, L., Stoesz, J.A., & Howell, R.R. 2004ApJ...614..235B
Bck2004 +A ApJ 614, 235, 2004
Bck2004 +Xl (IRTF+NSFcam, Keck and Gemini AO, IRTX SpeX)
Cse2015b A j Csepany, G., van den Ancker, M., Abraham, P., Brandner, W. & Hormuth, F. 2015A&A...578L...9C
Cse2015b A&AL 578, 9, 2015
Dch2002 A j Duchene, G. Ghez, A.M. & McCabe, C. 2002ApJ...568..771D
Dch2002 +S ApJ 568, 771, 2002
Dch2006 orb j Duchene, G., Beust, H., Adjali, F., Konopacky, Q.M., & Ghez, A.M. 2006A&A...457L...9D
Dch2006 +Si A&A 457, L9, 2006
Dch2006 +A
Fun2003 A j Furlan, E., Forrest, W.J., Watson, D.M., Uchida, K.I., Brandl, B.R., Keller, L.D., 2003ApJ...596L..87F
Fun2003 +orb & Herter, T.L.
Fun2003 ApJ 596, L87, 2003 (erratum: 2003 ApJ 599, L117) 2003ApJ...599L.117F
Ghe1995 Si j Ghez, A.M., Weinberger, A.J., Neugebauer, G., Matthews, K., & McCarthy, D.W., Jr. 1995AJ....110..753G
Ghe1995 AJ 110, 753, 1995
Jnt2003 Kl j Johnston, K.J., Gaume, R., Fey, A., de Vegt, C., & Claussen, M. 2003AJ....125..858J
Jnt2003 +orb AJ 125, 858, 2003
Jnt2003 (error estimates from Tamazian, AJ 127, 2378, 2004) 2004AJ....127.2378T
Koh2008b A j Koehler, R., Ratzka, T., Herbst, T.M., & Kasper, M. 2008A&A...482..929K
Koh2008b +orb A&A 482, 929, 2008
Krs1997 - Koresko, C.D., Herbst, T.M., & Leinert, Ch. 1997ApJ...480..741K
Krs1997 ApJ 480, 741, 1997
Loi2003 Kl - Loinard, L., Rodriguez, L. & Rodriguez, M. 2003ApJ...587L..47L
Loi2003 ApJ 587, L47, 2003
Loi2003 (error estimates from Tamazian, 2004 AJ 127, 2378) 2004AJ....127.2378T
Rod2000 A j Roddier, C., Roddier, C., Brandner, W., Charissoux, D., Veran, J.-P., & Courbin,F. 2000IAUS..200P..60R
Rod2000 IAU Symp. 200, 60, 2000
Scw1984 Kl - Schwartz, P.R., Simon, T., Zuckerman, B., & Howell, R.R. 1984ApJ...280L..23S
Scw1984 ApJ 280, L23, 1984
Scw1986 Kl - Schwartz, P.R., Simon, T., & Campbell, R. 1986ApJ...303..233S
Scw1986 ApJ 303, 233, 1986
Sfr2006 Hf j Schaefer, G.H., Simon, M., Beck, T.L., Nelan, E., & Prato, L. 2006AJ....132.2618S
Sfr2006 +A AJ 132, 2618, 2006
Sfr2006 (information slightly updated using information from Sfr2012. Photometry of DF Tau
Sfr2006 = 04271+2542 = THB 1 corrected and converted to V-band by Allen et al. 2017) 2017ApJ...845..161A
Sfr2014 orb j Schaefer, G.H., Prato, L., Simon, M., & Patience, J. 2014AJ....147..157S
Sfr2014 +A AJ 147, 157, 2014
Sfr2020 orb j Schaefer, G.H., Beck, T.L., Prato, L. & Simon, M. 2020AJ....160...35S
Sfr2020 +A AJ 160, 35, 2020
Tam2005 S j Tamazian, V.S., Docobo, J.A., Melikian, N.D., Balega, Y.Y., & Karapetian, A.A. 2005AJ....130.2847T
Tam2005 +orb AJ 130, 2847, 2005
 
 
DISCOVERER
 
 
idgroup discov author
1 NSE Nisenson, P., Stachnik, R.V., Karovska, M., & Noyes, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04220+1932 NSE 1 AC 1984 1 358 0.3 9.60 14.00 G5V D 042159.42+193206.5

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

 
 
WDS 04220+1932 NSE 1 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04220+1932 NSE 1 AC : MEASURES
 
 
No records found.

 
 
WDS 04220+1932 : VIRTUAL EYEPIECE
 
 

04220+1932 GHE 6A mag 5.5 Sp K0 04220+1932 GHE 6B sep 0.7 P.A. 190.70 mag 8.1 Sp 5 04220+1932 GHE 6Bb sep 0.6 P.A. 193.80 mag 10.3 Sp 5 04220+1932 NSE 1C sep 0.3 P.A. 358.10 mag 14 04220+1932 CSE 1D sep 0.1 P.A. 198.00 mag 14.5 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 04220+1932 : ALADIN DSS IMAGE @ 04h 21m 59.42s +19° 32' 06.5"
 
 
 
 
WDS 04220+1932 NSE 1 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04220+1932 NSE 1AC distance=0' 04221+1934 KOH 9AB distance=3' 04221+1934 DAE 25AC distance=3' 04218+1929 SIG 1 distance=4' 04217+1928 BU 9004 distance=6' 04218+1949 KNT 2 distance=17' 04203+1937 TDS2828 distance=25' 04201+1953 LDS1164 distance=34' 04221+2007 LDS3581 distance=35' 04242+1959 LDS3583 distance=41' 04222+1844 SLE 270 distance=49' 04255+1942 COU 565 distance=51' 04249+1903 OCC 921 distance=52' 04255+1946 STJ 27 distance=53' 04252+1858 RAO 546 distance=58' 04216+2029 LDS5543AB distance=58' 04216+2029 SKF1934Aa,Ab distance=58' 04255+1901 HEI 456 distance=59' 04203+1833 LDS5540AB distance=64' 04203+1833 LDS5540AC distance=64' 04174+1945 LDS5536 distance=67' 04175+1911 A 2350 distance=67' 04258+2012 LDS2235 distance=68' 04259+1852 BU 1185 distance=69' 04266+1912 GWP 585 distance=69' 04170+1941 HO 328 distance=71' 04223+1820 LDS2229 distance=72' 04270+1907 STF 546 distance=76' 04256+1838 COU2681AB distance=76' 04256+1838 GII 129Aa,Ab distance=76' 04224+2049 BU 87 distance=78' 04167+1909 LDS5530 distance=78' 04200+1820 LDS2225 distance=79' 04276+1927 RED 5 distance=80' 04210+2050 LDS3578 distance=80' 04207+2056 LDS2226 distance=86' 04174+2033 KPP3562 distance=89' 04235+2059 CHR 16AB distance=90' 04215+2102 OCC 684 distance=91' 04270+2030 LDS2237AB distance=91' 04162+1853 GWP 573 distance=91' 04270+2030 LDS2237BC distance=91' 04173+2035 LDS5535AB distance=92' 04173+2035 LDS5535AC distance=92' 04154+1948 UC 1142 distance=95' 04157+1858 OCC 432 distance=96' 04286+1911 WSI 53Aa,Ab distance=97' 04286+1911 BUP 61AB (Ain) distance=97' 04196+2104 HDS 553 distance=98' 04292+1956 LDS2243 distance=104' 04267+1811 LDS1170 distance=105' 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 04220+1932 GHE 6 AB 191 0.7
Show 04220+1932 GHE 6 A,Ba 195 0.7
Show 04220+1932 GHE 6 A,Bb 195 0.6
Show 04220+1932 NSE 1 AC 358 0.3
Show 04220+1932 KRS 2 Ba,Bb 20 0.1
Show 04220+1932 CSE 1 AD 199 0.1
Show 04221+1934 KOH 9 AB 317 12.0 3
Show 04221+1934 DAE 25 AC 187 7.7 3
Show 04218+1929 SIG 1 75 0.2 4
Show 04217+1928 BU 9004 46 55.8 6
Show 04218+1949 KNT 2 25 3.3 17
Show 04203+1937 TDS2828 264 3.1 25
Show 04201+1953 LDS1164 139 30.2 34
Show 04221+2007 LDS3581 179 14.4 35
Show 04242+1959 LDS3583 296 29.0 41
Show 04222+1844 SLE 270 98 11.0 49
Show 04255+1942 COU 565 136 0.7 51
Show 04249+1903 OCC 921 -1 0.1 52
Show 04255+1946 STJ 27 344 1.5 53
Show 04252+1858 RAO 546 140 0.8 58
Show 04216+2029 LDS5543 AB 89 113.6 58
Show 04216+2029 SKF1934 Aa,Ab 224 1.2 58
Show 04255+1901 HEI 456 221 2.9 59
Show 04203+1833 LDS5540 AB 266 264.2 64
Show 04203+1833 LDS5540 AC 266 306.8 64
Show 04174+1945 LDS5536 357 12.1 67
Show 04175+1911 A 2350 127 0.6 67
Show 04258+2012 LDS2235 112 27.6 68
Show 04259+1852 BU 1185 203 0.3 69
Show 04266+1912 GWP 585 183 37.5 69
Show 04170+1941 HO 328 358 0.4 71
Show 04223+1820 LDS2229 234 3.5 72
Show 04270+1907 STF 546 182 7.0 76
Show 04256+1838 COU2681 AB 253 1.1 76
Show 04256+1838 GII 129 Aa,Ab 171 0.2 76
Show 04224+2049 BU 87 168 1.9 78
Show 04167+1909 LDS5530 199 34.7 78
Show 04200+1820 LDS2225 229 5.8 79
Show 04276+1927 RED 5 162 0.1 80
Show 04210+2050 LDS3578 351 44.4 80
Show 04207+2056 LDS2226 5 21.1 86
Show 04174+2033 KPP3562 156 6.2 89
Show 04235+2059 CHR 16 AB 1 0.2 90
Show 04215+2102 OCC 684 -1 0.1 91
Show 04270+2030 LDS2237 AB 339 42.8 91
Show 04162+1853 GWP 573 236 163.2 91
Show 04270+2030 LDS2237 BC 55 14.0 91
Show 04173+2035 LDS5535 AB 299 180.7 92
Show 04173+2035 LDS5535 AC 157 6.0 92
Show 04154+1948 UC 1142 105 55.6 95
Show 04157+1858 OCC 432 -1 0.0 96

 
 
WDS 04220+1932 : COMPONENTS
 
 
  A B Bb C
B pa=190.7°
sep=0.69"
 
Bb pa=193.8°
sep=0.60"
pa=350.9°
sep=0.10"
 
C pa=358.1°
sep=0.27"
pa=7.1°
sep=0.95"
pa=8.9°
sep=0.86"
 
D pa=198.0°
sep=0.14"
pa=8.8°
sep=0.55"
pa=12.5°
sep=0.46"
pa=184.9°
sep=0.40"
 
 
04220+1932 A
 
 
Coord arcsec 2000 042159.42+193206.5 Mag 5.5 Spectral class K0 (yellow-orange) PmRA 15.00
PmDE -14.0 HIP 20390 Tycho2 1272-00470-1 HD 284419
BD BD+19 706
Tycho2
Tycho2 1272-00470-1 Pflag RAmdeg 65.49764844 DEmdeg 19.53511525
PmRA 15.1 PmDE -13.7 E RAmdeg 23 E DEmdeg 29
E pmRA 1.8 E pmDE 1.9 EpRAm 1988.95 EpDEm 1987.26
Num 5 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.8
Q pmDE 0.8 BTmag 11.334 E BTmag 0.073 VTmag 10.004
E VTmag 0.035 Prox 999 TYC T HIP 20390
CCDM RAdeg 65.49761222 DEdeg 19.53514472 EpRA 1990 1.64
EpDE 1990 1.29 E RAdeg 25.1 E DEdeg 32.4 Posflg
Corr -0.2
Hipparcos
Catalog H HIP 20390 Proxy RAhms 04 21 59.42
DEdms +19 32 06.5 Vmag 9.81 VarFlag 2 R Vmag H
RAdeg 65.4976 DEdeg 19.5351 AstroRef Plx 5.66
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 284419 BD BD+19 706
CD CP Dm number +19 706 VIred 1.16
SpType K0IIIe R SpType Coord arcsec 2000 042159.42+193206.5
Hipparcos 2
HIP 20390 Sn 5 So 0 Nc 1
RArad 1.143148834 DErad 0.3409526767 Plx 5.48 PmRA 15.51
PmDE -13.67 E RArad 1.49 E DErad 1.03 E Plx 1.58
E pmRA 1.93 E pmDE 1.64 Hpmag 9.9817 E Hpmag 0.0074
SHp 0.063 VA 2 BV 1.116 E BV 0.072
VI 1.08
 
 
04220+1932 B
 
 
Componente generatrice B Coord arcsec 2000 042159.41+193205.8 Mag 8.1 Spectral class 5
Calc delta mag 2.6 Calc coord yes
 
 
04220+1932 Bb
 
 
Coord arcsec 2000 042159.41+193205.9 Mag 10.3 Spectral class 5 Calc delta mag 4.8
Calc coord yes
 
 
04220+1932 C
 
 
Coord arcsec 2000 042159.42+193206.8 Mag 14 Calc delta mag 8.5 Calc coord yes
 
 
04220+1932 D
 
 
Coord arcsec 2000 042159.42+193206.4 Mag 14.5 Calc delta mag 9 Calc coord yes