stampa
Login

Keep tracks of you favourite doubles.
Register here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
04256+1556
BUP 57 AB
70 Tau


Nearby doubles
9' : 04251+1559
LDS5554

13' : 04248+1552
GWP 582AB

23' : 04263+1537
BUP 59AB

33' : 04238+1539
LDS2231

34' : 04242+1623
MET 38

34' : 04237+1538
MET 3AB

34' : 04234+1546
TOK 876

36' : 04255+1631
LDS2234

36' : 04268+1525
LDS2236

37' : 04271+1626
LDS2240

40' : 04271+1523
LDS2241

45' : 04287+1552
STFA 10AB
Chamukuy

45' : 04283+1618
OCC9091

48' : 04280+1629
SKF2121

48' : 04284+1622
RCH 2

51' : 04290+1610
HU 1080

51' : 04267+1645
GUE 4

52' : 04234+1638
OCC 527

54' : 04220+1547
OCC1011

54' : 04283+1518
LDS3589

55' : 04261+1502
KPP3569

56' : 04264+1651
OCC 553

59' : 04220+1530
DCH 50AB

59' : 04273+1503
LDS3587

60' : 04245+1653
PAT 6

60' : 04219+1530
CHX 1



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.

04256+1556 BUP 57 AB (70 Tau)

 
 
04h 25m 37.25s +15° 56' 27.9" P.A. 339.00 sep 129.5 mag 6.45,13.39 Sp F7V dist. 47.17 pc (153.87 l.y.)
 
 
Coord 2000 04256+1556 Discov num BUP  57 Comp AB Coord arcsec 2000 04 25 37.25 +15 56 27.9
Date first 1910 Date last 2015 Obs 8
Pa first 343 Pa last 339 P.A. Now (θ) 339°
Sep first 124.4 Sep last 129.48 Sep. Now (ρ) 129.48"
Mag pri 6.45 Mag sec 13.39 delta mag (ΔM) 6.94 Spectral class F7V (yellow-white)
Pri motion ra +105 Sec motion ra +001
Pri motion dec -029 Sec motion dec -003
Notes N (See Notes)
rPM=0.984
This double is not physical.
 
 
04256+1556 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 93925 04 25 37 +15 56 28 FIN 342 Aa,Ab 2021 98 157 0.1 7.74 7.00 0.74 Y
Show 70 Tau 93925 04 25 37 +15 56 28 BUP 57 AB 2015 8 339 129.5 6.45 13.39 6.94 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 70 Tau Constellation Taurus SAO 93925 HIP 20661
Tycho2 1265-01171-1 Gaia DR2 3312783561888068352 HD 27991 HR 1391
GC 5356 BD BD+15 621 Flamsteed 70 Tauri Flamsteed name 70 Tau
Distance 47.17 Distance ly 153.87
 
 
WDS 04256+1556 BUP 57 AB (70 Tau) : NOTES
 
 
discov_num notes refcode
FIN 342 Aa,Ab: Hyad (vB 57). HR 1391 = 70 Tau.
Combined spectroscopic/astrometric solution. Orbital parallax 0.02144 Trr1997b
+/- 0.00067, masses 1.363 +/= 0.073 and 1.253 +/- 0.075 Msun.
Quadrant determinations made at several epochs by McAlister et al. McA1988
(1988) have shown that this system is best represented by an eccentric
orbit of period 6.3 years, rather than a circular 13-year orbit.
1977.7421 Theta was incorrectly given as 6.0 degrees by McAlister &
Fekel 1980). McA1980b
This resolved spectroscopic binary (with P = 6.28 yr) is discussed by McA1988
McAlister et al. (1988) and by Dombrowski (1991). Dmb1991
The published measure for 1988.6582 (McAlister et al. 1990) is McA1990
is spurious. The data leading to this measure are actually the same as
those for HR 1331 (= McA 14) for the same epoch. These two stars were
observed in immediate sequence but with different microscope
objectives, and the final reductions calculated two results from the
same data set, but with different scale factors; the HR 1331 measure
for 1988.6582 is the correct one. Reanalysis of the correct data for
FIN 342 gives the 25 mas result shown here. Peterson (1992, private
communication) pointed out the inconsistency of our originally
published measure with respect to our previous orbital analysis of
this Hyades binary (McAlister et al. 1988). Hrt1992b
Pourbaix gives combined solution for this resolved SB2, yielding
orbital parallaxes and component masses. Pbx2000b
Aa,Ab : New spectroscopic solution determined by Griffin. Grf2012b
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 2.50 +/- 0.47, 2.48, and 1.13 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Dmb1991 - Dombrowski, E.G. .
Dmb1991 PhD thesis, Georgia State Univ., 1991
Grf2012b not - Griffin, R.F. 2012JApA...33...29G
Grf2012b J Astrophys Astron 33, 29, 2012
Hrt1992b Sc j Hartkopf, W.I., McAlister, H.A., & Franz, O.G. 1992AJ....104..810H
Hrt1992b AJ 104, 810, 1992
McA1980b Sc j McAlister, H.A. & Fekel, F.C. 1980ApJS...43..327M
McA1980b ApJS 43, 327, 1980
McA1988 orb - McAlister, H.A., Hartkopf, W.I., Bagnuolo, W.G., Sowell, J.R., Franz, O.G., & 1988AJ.....96.1431M
McA1988 +S Evans, D.S.
McA1988 AJ 96, 1431, 1988
McA1990 Sc j McAlister, H.A., Hartkopf, & Franz, O.G. 1990AJ.....99..965M
McA1990 AJ 99, 965, 1990
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Pbx2000b orb - Pourbaix, D. 2000A&AS..145..215P
Pbx2000b A&AS 145, 215, 2000
Trr1997b orb - Torres, G., Stefanik, R.P., & Latham, D.W. 1997ApJ...479..268T
Trr1997b ApJ 479, 268, 1997
Trr1997b orb - Torres, G., Stefanik, R., & Andersen, J., Nordstrom, B., Latham, D., & Clausen, J. 1997AJ....114.2764T
Trr1997b AJ 114, 2764, 1997
 
 
DISCOVERER
 
 
idgroup discov author
1 BUP Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913)
1 FIN Finsen, W.S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04256+1556 BUP 57 AB 1998 3 340 128.6 6.40 12.40 F7V D 042537.25+155627.9
04256+1556 BUP 57 AB 2000 4 339 127.9 6.40 12.40 F7V N D 042537.25+155627.9
04256+1556 BUP 57 AB 2015 5 339 129.5 6.45 13.39 F7V N 042537.25+155627.9

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

 
 
WDS 04256+1556 BUP 57 AB (70 Tau) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04256+1556 BUP 57 AB (70 Tau) : MEASURES
 
 
No records found.

 
 
WDS 04256+1556 (70 Tau) : VIRTUAL EYEPIECE
 
 

04256+1556 BUP 57A mag 6.45 Sp F7V 04256+1556 FIN 342Ab sep 0.1 P.A. 157.80 mag 7 04256+1556 BUP 57B sep 128.8 P.A. 339.70 mag 13.39 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 04256+1556 (70 Tau) : ALADIN DSS IMAGE @ 04h 25m 37.25s +15° 56' 27.9"
 
 
 
 
WDS 04256+1556 BUP 57 AB (70 Tau) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04256+1556 BUP 57AB distance=0' 04251+1559 LDS5554 distance=9' 04248+1552 HDS 566Aa,Ab distance=13' 04248+1552 GWP 582AB distance=13' 04248+1552 TOK 246AC distance=13' 04248+1552 TOK 246AD distance=13' 04248+1552 TOK 246AE distance=13' 04248+1552 TOK 246AF distance=13' 04248+1552 TOK 246AG distance=13' 04263+1537 BUP 59AB distance=23' 04263+1537 DRS 38AC distance=23' 04263+1537 OCC9089Aa,Ab distance=23' 04248+1552 PAT 7GH distance=26' 04238+1539 LDS2231 distance=33' 04242+1623 MET 38 distance=34' 04237+1538 MET 3AB distance=34' 04234+1546 TOK 876 distance=34' 04255+1631 LDS2234 distance=36' 04268+1525 LDS2236 distance=36' 04271+1626 LDS2240 distance=37' 04271+1523 LDS2241 distance=40' 04287+1552 MCA 15Ba,Bb distance=43' 04287+1552 BPMA 7BC distance=43' 04287+1552 MKT 13Aa,Ab (Chamukuy) distance=45' 04287+1552 STFA 10AB (Chamukuy) distance=45' 04283+1618 OCC9091 distance=45' 04280+1629 SKF2121 distance=48' 04284+1622 RCH 2 distance=48' 04290+1610 HU 1080 distance=51' 04267+1645 GUE 4 distance=51' 04288+1617 BPMA 8AG distance=51' 04288+1617 RAO 547Aa,Ab distance=51' 04288+1617 RAO 547AH distance=51' 04234+1638 OCC 527 distance=52' 04220+1547 OCC1011 distance=54' 04283+1518 LDS3589 distance=54' 04261+1502 KPP3569 distance=55' 04264+1651 OCC 553 distance=56' 04220+1530 DCH 50AB distance=59' 04220+1530 DCH 50AC distance=59' 04273+1503 LDS3587 distance=59' 04245+1653 PAT 6 distance=60' 04219+1530 CHX 1 distance=60' 04298+1550 LDS2245 distance=60' 04227+1503 STT 82AB distance=68' 04227+1503 LDS1166AC distance=68' 04227+1503 CIA 24Aa,Ab distance=68' 04271+1453 SKF2120 distance=68' 04301+1538 STF 554 distance=68' 04247+1704 SKF2119 distance=69' 04244+1705 OCC 615 distance=71' 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 04256+1556 FIN 342 Aa,Ab 157 0.1
Show 04256+1556 BUP 57 AB 339 129.5
Show 04251+1559 LDS5554 277 4.4 9
Show 04248+1552 HDS 566 Aa,Ab 317 0.2 13
Show 04248+1552 GWP 582 AB 312 187.9 13
Show 04248+1552 TOK 246 AC 277 287.5 13
Show 04248+1552 TOK 246 AD 271 939.3 13
Show 04248+1552 TOK 246 AE 15 999.9 13
Show 04248+1552 TOK 246 AF 247 999.9 13
Show 04248+1552 TOK 246 AG 138 999.9 13
Show 04263+1537 BUP 59 AB 154 130.9 23
Show 04263+1537 DRS 38 AC 147 10.4 23
Show 04263+1537 OCC9089 Aa,Ab -1 0.0 23
Show 04248+1552 PAT 7 GH 281 0.2 26
Show 04238+1539 LDS2231 132 6.1 33
Show 04242+1623 MET 38 257 2.1 34
Show 04237+1538 MET 3 AB 237 15.4 34
Show 04234+1546 TOK 876 63 1.2 34
Show 04255+1631 LDS2234 44 25.0 36
Show 04268+1525 LDS2236 237 78.1 36
Show 04271+1626 LDS2240 127 3.1 37
Show 04271+1523 LDS2241 348 43.3 40
Show 04287+1552 MCA 15 Ba,Bb 351 0.2 43
Show 04287+1552 BPMA 7 BC 75 268.3 43
Show Chamukuy 04287+1552 MKT 13 Aa,Ab 334 0.0 45
Show Chamukuy 04287+1552 STFA 10 AB 347 336.9 45
Show 04283+1618 OCC9091 -1 0.1 45
Show 04280+1629 SKF2121 292 2.2 48
Show 04284+1622 RCH 2 30 0.0 48
Show 04290+1610 HU 1080 266 0.2 51
Show 04267+1645 GUE 4 192 0.4 51
Show 04288+1617 BPMA 8 AG 33 246.3 51
Show 04288+1617 RAO 547 Aa,Ab 96 0.7 51
Show 04288+1617 RAO 547 AH 175 2.0 51
Show 04234+1638 OCC 527 -1 0.1 52
Show 04220+1547 OCC1011 -1 0.1 54
Show 04283+1518 LDS3589 131 34.8 54
Show 04261+1502 KPP3569 149 2.1 55
Show 04264+1651 OCC 553 -1 0.0 56
Show 04220+1530 DCH 50 AB 305 6.0 59
Show 04220+1530 DCH 50 AC 290 28.3 59
Show 04273+1503 LDS3587 112 30.9 59
Show 04245+1653 PAT 6 235 1.3 60
Show 04219+1530 CHX 1 315 7.8 60
Show 04298+1550 LDS2245 68 4.5 60
Show 04227+1503 STT 82 AB 323 1.2 68
Show 04227+1503 LDS1166 AC 290 66.4 68
Show 04227+1503 CIA 24 Aa,Ab -1 -1.0 68
Show 04271+1453 SKF2120 56 7.3 68
Show 04301+1538 STF 554 15 1.4 68
Show 04247+1704 SKF2119 356 4.9 69

 
 
WDS 04256+1556 : COMPONENTS
 
 
  A Ab
Ab pa=157.8°
sep=0.09"
 
B pa=339.7°
sep=128.85"
pa=339.7°
sep=128.94"
 
 
04256+1556 A
 
 
Name 70 Tau Coord arcsec 2000 042537.25+155627.9 Mag 6.45 Spectral class F7V (yellow-white)
PmRA 105.00 PmDE -29.0 SAO 93925 HIP 20661
Tycho2 1265-01171-1 HD 27991 HR 1391 GC 5356
BD BD+15 621 Flamsteed 70 Tauri Flamsteed name 70 Tau
Tycho2
Tycho2 1265-01171-1 Pflag RAmdeg 66.40548893 DEmdeg 15.94102023
PmRA 105.1 PmDE -24.7 E RAmdeg 4 E DEmdeg 4
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.45 EpDEm 1991.06
Num 15 Q RAmdeg 1.2 Q DEmdeg 1.8 Q pmRA 1.4
Q pmDE 1.7 BTmag 7.023 E BTmag 0.015 VTmag 6.490
E VTmag 0.010 Prox 999 TYC T HIP 20661
CCDM AP RAdeg 66.40523778 DEdeg 15.94108000 EpRA 1990 1.75
EpDE 1990 1.33 E RAdeg 3.5 E DEdeg 4.1 Posflg P
Corr -0.4
SAO
SAO 93925 DelFlag RA1950 PmRA1950 0.0074
DE1950 PmDE1950 -0.027 Vmag 6.4 SpType F8
Double code Source 70 CatNum 5356 DM BD+15 621
DMcomp BDsup HD 27991 M HD 0
GC 5356 RA1950rad 1.14652452 DE1950rad 0.27625532 PmRA2000 0.0074
PmDE2000 -0.028
Hipparcos
Catalog H HIP 20661 Proxy H RAhms 04 25 37.25
DEdms +15 56 27.9 Vmag 6.44 VarFlag R Vmag H
RAdeg 66.4052 DEdeg 15.9411 AstroRef * Plx 21.47
CCDM 04256+1557 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP PA
Theta 156 Rho 0.099 HD 27991 BD BD+15 621
CD CP Dm number +15 621 VIred 0.57
SpType F7V R SpType Coord arcsec 2000 042537.25+155627.9
Hipparcos 2
HIP 20661 Sn 55 So 3 Nc 2
RArad 1.1589897843 DErad 0.2782243366 Plx 21.2 PmRA 104.06
PmDE -27.71 E RArad 0.84 E DErad 0.45 E Plx 0.92
E pmRA 1.17 E pmDE 0.79 Hpmag 6.5556 E Hpmag 0.0008
SHp 0.007 VA 0 BV 0.509 E BV 0.005
VI 0.58
 
 
04256+1556 Ab
 
 
Coord arcsec 2000 042537.25+155627.8 Mag 7 Calc delta mag 0.74 Calc coord yes
 
 
04256+1556 B
 
 
Coord arcsec 2000 042534.16+155828.8 Mag 13.39 PmRA 1.00 PmDE -3.0
Calc delta mag 5.65 Calc coord yes