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Doubles in session


Current system
04220+2826
ISM 1 AB


Nearby doubles
2' : 04221+2826
KSA 105AB

9' : 04220+2818
ITO 21AB

13' : 04229+2824
STF 529AB

34' : 04194+2826
LEI 11

37' : 04192+2830
LEI 10

38' : 04195+2808
DAE 23AB

39' : 04190+2823
KSA 13

40' : 04190+2820
KSA 12

42' : 04189+2820
PAD 26

42' : 04190+2812
KSA 11AB

43' : 04188+2820
KSA 104AB

43' : 04188+2821
KSA 10

44' : 04187+2819
SKN 1AB

45' : 04186+2831
KSA 9

46' : 04239+2749
TOK 484

47' : 04185+2817
HAT 4AB

48' : 04197+2750
LEI 12

55' : 04178+2830
KSA 8

58' : 04176+2833
SAR 2AB

58' : 04197+2915
DBR 331

59' : 04258+2855
HJ 343AB

60' : 04192+2914
TVB 69

69' : 04192+2729
KPP2041

69' : 04204+2721
SHJ 40AB

74' : 04239+2719
LDS6128

75' : 04269+2902
LDS3585AB



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+2826 ISM 1 AB

 
 
04h 21m 57.40s +28° 26' 35.8" P.A. 158.00 sep 0.0 mag 10.20,11.30 Sp F8: dist. 192.31 pc (627.32 l.y.)
 
 
Coord 2000 04220+2826 Discov num ISM   1 Comp AB Coord arcsec 2000 04 21 57.40 +28 26 35.8
Date first 1981 Date last 1988 Obs 2
Pa first 92 Pa last 158 P.A. Now (θ) 158°
Sep first 0.0 Sep last 0.042 Sep. Now (ρ) 0.042"
Mag pri 10.20 Mag sec 11.30 delta mag (ΔM) 1.1 Spectral class F8: (yellow-white)
Pri motion ra +009 Sec motion ra
Pri motion dec -032 Sec motion dec
Notes N W (See Notes, )
Nature of this double is uncertain.
 
 
04220+2826 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 04 21 57 +28 26 36 ISM 1 AB 1988 2 158 0.0 10.20 11.30 1.10 <===
Show RY Tau 04 21 57 +28 26 36 ITO 22 AC 2015 6 121 10.6 6.13 13.54 7.41
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name RY Tau Constellation Taurus HIP 20387 Tycho2 1828-00129-1
Gaia DR2 164551162164119424 HD 283571 BD BD+28 645 Distance 192.31
Distance ly 627.32
 
 
WDS 04220+2826 ISM 1 AB : NOTES
 
 
discov_num notes refcode
ISM 1 RY Tau, a T-Tauri star.
 
 
REFERENCES
 
 
refcode metd author reference
Ism1992 Ig u Ismailov, R.M. 1992A&AS...96..375I
Ism1992 A&AS 96, 375, 1992
Ito1999 Ci - Itoh, Y., Tamura, M., & Nakajima, T. 1999AJ....117.1471I
Ito1999 +S AJ 117, 1471, 1999
Ito2005 Ac j Itoh, Y., Hayashi, M., Tamura, M., Tsuji, T., Oasa, Y., Fukagawa, M., 2005ApJ...620..984I
Ito2005 +Hp Hayashi, S.S., Naoi, T., Ishii, M., Mayama, S., Morino, J., Yamashita, T., et al.
Ito2005 ApJ 620, 984, 2005
Ito2008 A - Itoh, Y., Tamura, M., Hayashi, M., Oasa, Y., Hayashi, S.S., Fukagawa, M., 2008PASJ...60..209I
Ito2008 +H Kudo, T., Mayama, S., Ishii, M., Pyo, T.-S., Yamashita, T., & Morino, J.
Ito2008 +Ac PASJ 60, 209, 2008
Ito2008 [Note: Only date ranges given for measures. HST measures (1995-1999) are listed
Ito2008 at coarse date 1997, Subaru measures (2002-2004) at 2003.]
Ito2008b A j Itoh, Y., Hayashi, M., Tamura, M., Oasa, Y., Hioki, T. Fukagawa, M., & Kudo, T. 2008PASJ...60..223I
Ito2008b PASJ 60, 223, 2008
Ito2011 Ac j Itoh, Y., Oasa, Y., Funayama, H., Hayashi, M., Fukagawa, M., Hashiguchi, T., & 2011RAA....11..335I
Ito2011 +Hi Currie, T.
Ito2011 RAA 11, 335, 2011
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04220+2826 ISM 1 AB 1988 2 158 0.0 10.20 11.30 F8: N 042157.40+282635.8

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

 
 
WDS 04220+2826 ISM 1 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04220+2826 ISM 1 AB : MEASURES
 
 
No records found.

 
 
WDS 04220+2826 : VIRTUAL EYEPIECE
 
 

04220+2826 ISM 1A mag 10.2 Sp F8: 04220+2826 ISM 1B mag 11.3 04220+2826 ITO 22C sep 9.7 P.A. 123.80 mag 13.54 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+2826 : ALADIN DSS IMAGE @ 04h 21m 57.40s +28° 26' 35.8"
 
 
 
 
WDS 04220+2826 ISM 1 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04220+2826 ISM 1AB distance=1' 04220+2826 ITO 22AC distance=1' 04221+2826 KSA 105AB distance=2' 04221+2826 DAE 24AC distance=2' 04220+2818 ITO 21AB distance=9' 04220+2818 ITO 21AC distance=9' 04220+2818 ITO 21AD distance=9' 04229+2824 STF 529AB distance=13' 04229+2824 KSA 131AC distance=13' 04194+2826 LEI 11 distance=34' 04192+2830 LEI 10 distance=37' 04195+2808 DAE 23AB distance=38' 04195+2808 DAE 23AC distance=38' 04195+2808 DAE 23AD distance=38' 04195+2808 DAE 23AE distance=38' 04190+2823 KSA 13 distance=39' 04190+2820 KSA 12 distance=40' 04189+2820 PAD 26 distance=42' 04190+2812 KSA 11AB distance=42' 04190+2812 DCH 48AC distance=42' 04188+2820 KSA 104AB distance=43' 04188+2820 ITO 19AC distance=43' 04188+2820 ITO 19AD distance=43' 04188+2821 KSA 10 distance=43' 04187+2819 SKW 2Aa,Ab distance=44' 04187+2819 SKN 1AB distance=44' 04186+2831 KSA 9 distance=45' 04185+2828 GHE 4EI distance=46' 04239+2749 TOK 484 distance=46' 04185+2817 LEI 9Ba,Bb distance=47' 04185+2817 GHE 5Aa,Ab distance=47' 04185+2817 HAT 4AB distance=47' 04197+2750 LEI 12 distance=48' 04193+2906 ITO 20FI distance=54' 04193+2906 ITO 20FJ distance=54' 04178+2830 KSA 8 distance=55' 04176+2833 SAR 2AB distance=58' 04176+2833 SAR 2A,Ca distance=58' 04176+2833 SAR 2A,Cb distance=58' 04176+2833 KSA 103Aa,Ab distance=58' 04197+2915 DBR 331 distance=58' 04258+2855 HJ 343AB distance=59' 04258+2855 HJ 343AC distance=59' 04258+2855 HJ 343AD distance=59' 04258+2855 ABH 23AE distance=59' 04192+2914 TVB 69 distance=60' 04192+2729 KPP2041 distance=69' 04204+2721 SHJ 40AB distance=69' 04204+2721 WAL 29AC distance=69' 04239+2719 LDS6128 distance=74' 04269+2902 LDS3585AB distance=75' 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+2826 ISM 1 AB 158 0.0 1
Show 04220+2826 ITO 22 AC 121 10.6 1
Show 04221+2826 KSA 105 AB 114 0.0 2
Show 04221+2826 DAE 24 AC 315 11.0 2
Show 04220+2818 ITO 21 AB 56 5.7 9
Show 04220+2818 ITO 21 AC 152 8.1 9
Show 04220+2818 ITO 21 AD 14 6.5 9
Show 04229+2824 STF 529 AB 13 4.3 13
Show 04229+2824 KSA 131 AC 28 1.3 13
Show 04194+2826 LEI 11 172 10.0 34
Show 04192+2830 LEI 10 63 0.7 37
Show 04195+2808 DAE 23 AB 228 2.0 38
Show 04195+2808 DAE 23 AC 93 6.6 38
Show 04195+2808 DAE 23 AD 244 6.7 38
Show 04195+2808 DAE 23 AE 227 9.3 38
Show 04190+2823 KSA 13 48 13.3 39
Show 04190+2820 KSA 12 34 26.7 40
Show 04189+2820 PAD 26 111 0.2 42
Show 04190+2812 KSA 11 AB 28 25.7 42
Show 04190+2812 DCH 48 AC 248 28.8 42
Show 04188+2820 KSA 104 AB 121 0.0 43
Show 04188+2820 ITO 19 AC 234 5.7 43
Show 04188+2820 ITO 19 AD 138 5.3 43
Show 04188+2821 KSA 10 115 23.1 43
Show 04187+2819 SKW 2 Aa,Ab 61 0.1 44
Show 04187+2819 SKN 1 AB 23 4.0 44
Show 04186+2831 KSA 9 106 17.3 45
Show 04185+2828 GHE 4 EI 142 0.3 46
Show 04239+2749 TOK 484 199 311.0 46
Show 04185+2817 LEI 9 Ba,Bb 89 0.4 47
Show 04185+2817 GHE 5 Aa,Ab 177 0.6 47
Show 04185+2817 HAT 4 AB 11 30.0 47
Show 04197+2750 LEI 12 24 1.0 48
Show 04193+2906 ITO 20 FI 261 3.0 54
Show 04193+2906 ITO 20 FJ 8 5.5 54
Show 04178+2830 KSA 8 137 27.7 55
Show 04176+2833 SAR 2 AB 290 18.2 58
Show 04176+2833 SAR 2 A,Ca 121 14.6 58
Show 04176+2833 SAR 2 A,Cb 118 14.3 58
Show 04176+2833 KSA 103 Aa,Ab 61 0.0 58
Show 04197+2915 DBR 331 207 5.7 58
Show 04258+2855 HJ 343 AB 125 24.8 59
Show 04258+2855 HJ 343 AC 127 38.8 59
Show 04258+2855 HJ 343 AD 92 61.8 59
Show 04258+2855 ABH 23 AE 286 82.5 59
Show 04192+2914 TVB 69 239 2.8 60
Show 04192+2729 KPP2041 41 16.3 69
Show 04204+2721 SHJ 40 AB 259 48.7 69
Show 04204+2721 WAL 29 AC 25 118.1 69
Show 04239+2719 LDS6128 88 103.2 74
Show 04269+2902 LDS3585 AB 89 256.2 75

 
 
WDS 04220+2826 : COMPONENTS
 
 
  A B
B pa=160.4°
sep=0.04"
 
C pa=123.8°
sep=9.66"
pa=123.7°
sep=9.62"
 
 
04220+2826 A
 
 
Coord arcsec 2000 042157.40+282635.8 Mag 10.2 Spectral class F8: (yellow-white) PmRA 9.00
PmDE -32.0 HIP 20387 Tycho2 1828-00129-1 HD 283571
BD BD+28 645
Tycho2
Tycho2 1828-00129-1 Pflag RAmdeg 65.48919962 DEmdeg 28.44318982
PmRA 10.4 PmDE -29.6 E RAmdeg 29 E DEmdeg 34
E pmRA 2.2 E pmDE 2.2 EpRAm 1990.37 EpDEm 1989.37
Num 4 Q RAmdeg 1.3 Q DEmdeg 2.3 Q pmRA 1.3
Q pmDE 2.3 BTmag 11.449 E BTmag 0.073 VTmag 10.319
E VTmag 0.044 Prox 999 TYC T HIP 20387
CCDM RAdeg 65.48917806 DEdeg 28.44326250 EpRA 1990 1.67
EpDE 1990 1.54 E RAdeg 32.4 E DEdeg 37.1 Posflg
Corr -0.2
Hipparcos
Catalog H HIP 20387 Proxy RAhms 04 21 57.40
DEdms +28 26 35.8 Vmag 10.2 VarFlag 3 R Vmag T
RAdeg 65.4892 DEdeg 28.4433 AstroRef * Plx 7.49
CCDM N CCDM Nsys Ncomp 1
MultFlag V Source Qual M HIP
Theta Rho HD 283571 BD BD+28 645
CD CP Dm number +28 645 VIred 0.74
SpType F8Ve-K1Ve(T) R SpType Coord arcsec 2000 042157.40+282635.8
Hipparcos 2
HIP 20387 Sn 5 So 5 Nc 1
RArad 1.1430017868 DErad 0.496428676 Plx 5.2 PmRA 10.89
PmDE -22.14 E RArad 2.27 E DErad 1.5 E Plx 2.43
E pmRA 3.21 E pmDE 2.21 Hpmag 10.4974 E Hpmag 0.0652
SHp 0.495 VA 2 BV 0.915 E BV 0.078
VI 0.91
 
 
04220+2826 B
 
 
Coord arcsec 2000 042157.40+282635.8 Mag 11.3 Calc delta mag 1.1 Calc coord yes
 
 
04220+2826 C
 
 
Coord arcsec 2000 042158.01+282630.4 Mag 13.54 Calc delta mag 3.34 Calc coord yes