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Doubles in session


Current system
03321+4340
COU 1688 AB
HD 21727


Nearby doubles
18' : 03320+4358
KPP3167

23' : 03339+4351
SMA 37AB

24' : 03309+4359
LSC 27

34' : 03348+4356
MMA 12

37' : 03353+4351
A 1534

38' : 03353+4354
MMA 13

42' : 03348+4408
SMA 38

44' : 03343+4416
HDS 453

56' : 03322+4245
HDS 446

57' : 03296+4251
CVR 42

61' : 03356+4253
BUP 45AB

62' : 03375+4321
A 1536AB

63' : 03363+4258
TDS2597

66' : 03347+4241
COU1689

70' : 03266+4415
COU1684

70' : 03370+4256
TDS2600

71' : 03322+4450
CRI 4

71' : 03260+4405
COU1683

71' : 03257+4354
KPP 587

71' : 03267+4420
COU1685

74' : 03352+4235
BU 788AB

77' : 03392+4344
TDS2612

79' : 03255+4412
LDS2848

81' : 03389+4308
A 1537

84' : 03281+4452
COU1861

86' : 03242+4333
LDS2846



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.

03321+4340 COU 1688 AB (HD 21727)

 
 
03h 32m 05.10s +43° 40' 11.5" P.A. 153.00 sep 0.4 mag 8.56,8.90 Sp G5 dist. 60.79 pc (198.3 l.y.)
 
 
Coord 2000 03321+4340 Discov num COU1688 Comp AB Coord arcsec 2000 03 32 05.10 +43 40 11.5
Date first 1978 Date last 2012 Obs 6
Pa first 29 Pa last 152.9 P.A. Now (θ) 152.9°
Sep first 0.1 Sep last 0.435 Sep. Now (ρ) 0.435"
Mag pri 8.56 Mag sec 8.90 delta mag (ΔM) 0.34 Spectral class G5 (yellow)
Pri motion ra +298 Sec motion ra
Pri motion dec -120 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
03321+4340 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 21727 38921 03 32 05 +43 40 12 COU 1688 AB 2012 6 153 0.4 8.56 8.90 0.34 Y <===
Show 38921 03 32 05 +43 40 12 LDS 9155 AC 2016 11 137 14.7 8.56 13.09 4.53
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 21727 Constellation Perseus SAO 38921 HIP 16467
Tycho2 2874-00788-1 Gaia DR2 238521867779351296 HD 21727 BD BD+43 744
Distance 60.79 Distance ly 198.3
 
 
ORBITAL ELEMENTS
 
 
Period (P)9.15y Periastron (T)1987.02y Semi-major axis (a)0.144a
Eccentricity (e)0.08 Inclination (i)43.7° Longitude of periastron (ω)303.9°
Node (Ω)26.5° Notesn ReferenceBaz1993d
Equinox2000 Last observation1986 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 128.5 0.113
2001 168.2 0.134
2002 196.8 0.150
2003 224.0 0.140
2004 262.8 0.108
2005 322.1 0.101
2006 8.0 0.128
2007 40.2 0.137
2008 75.6 0.120
2009 121.4 0.111
2010 163.1 0.130
2011 192.9 0.149
2012 219.5 0.143
2013 255.5 0.112
2014 313.1 0.098
2015 2.5 0.124
2016 35.6 0.137
2017 69.6 0.123
2018 114.3 0.111
2019 157.8 0.126
2020 188.9 0.147
2021 215.3 0.146
2022 248.9 0.117
2023 303.9 0.097
2024 356.6 0.120
2025 30.9 0.138
2026 63.9 0.126
2027 107.1 0.111
2028 152.1 0.123
2029 184.8 0.145
2030 211.2 0.148


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


 
  


wds03321%2B4340a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 03321+4340 COU 1688 AB (HD 21727) : NOTES
 
 
discov_num notes refcode
COU1688 AB: A premature orbit has been calculated with very sparse data, since
most of the observations are negative.
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 3.58 +/- 1.35, 2.16, and 0.95 Msun, respectively. Mlk2012
LDS9155 AC: Old LDS6155. HIP 16467. See Allen et al. (2000) for information on AlC2000
metallicity, age, galactic orbital parameters, etc.
NLTT 11124/11125 Chm2004
 
 
REFERENCES
 
 
refcode metd author reference
AlC2000 Po - Allen, C., Poveda, A., & Herrera, M 2000A&A...356..529A
AlC2000 A&A 356, 529, 2000
Baz1993d orb - Baize, P. 1993IAUDS.121....1B
Baz1993d Inf. Circ. 121, 1, 1993
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 COU Couteau, P.
240 LDS Luyten p.m. catalog (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03321+4340 COU1688 AB 1986 4 138 0.1 8.56 8.90 G5 NO 033205.10+434011.5
03321+4340 COU1688 AB 2008 5 135 0.2 8.56 8.90 G5 NO 033205.10+434011.5
03321+4340 COU1688 AB 2012 6 153 0.4 8.56 8.90 G5 NO 033205.10+434011.5

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

 
 
WDS 03321+4340 COU 1688 AB (HD 21727) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03321+4340 COU 1688 AB (HD 21727) : MEASURES
 
 
No records found.

 
 
WDS 03321+4340 (HD 21727) : VIRTUAL EYEPIECE
 
 

03321+4340 COU1688A mag 8.56 Sp G5 03321+4340 COU1688B sep 0.4 P.A. 159.70 mag 8.9 03321+4340 LDS9155C sep 12.9 P.A. 145.90 mag 13.09 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 03321+4340 (HD 21727) : ALADIN DSS IMAGE @ 03h 32m 05.10s +43° 40' 11.5"
 
 
 
 
WDS 03321+4340 COU 1688 AB (HD 21727) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03321+4340 COU1688AB distance=1' 03321+4340 LDS9155AC distance=1' 03320+4358 KPP3167 distance=18' 03339+4351 SMA 37AB distance=23' 03339+4351 SMA 37AC distance=23' 03309+4359 LSC 27 distance=24' 03348+4356 MMA 12 distance=34' 03353+4351 A 1534 distance=37' 03353+4354 MMA 13 distance=38' 03348+4408 SMA 38 distance=42' 03343+4416 HDS 453 distance=44' 03322+4245 HDS 446 distance=56' 03296+4251 CVR 42 distance=57' 03356+4253 BUP 45AB distance=61' 03356+4253 BUP 45AC distance=61' 03356+4253 LDS9156AD distance=61' 03375+4321 A 1536AB distance=62' 03363+4258 TDS2597 distance=63' 03347+4241 COU1689 distance=66' 03266+4415 COU1684 distance=70' 03370+4256 TDS2600 distance=70' 03322+4450 CRI 4 distance=71' 03260+4405 COU1683 distance=71' 03257+4354 KPP 587 distance=71' 03267+4420 COU1685 distance=71' 03352+4235 BU 788AB distance=74' 03352+4235 BU 788AC distance=74' 03392+4344 TDS2612 distance=77' 03255+4412 LDS2848 distance=79' 03389+4308 A 1537 distance=81' 03281+4452 COU1861 distance=84' 03242+4333 LDS2846 distance=86' 03400+4350 KPP2153 distance=87' 03247+4417 ARG 55AB distance=88' 03247+4417 SIN 9AC distance=88' 03247+4417 SIN 9AD distance=88' 03293+4503 STF 391 distance=89' 03400+4321 AOT 7 distance=89' 03355+4218 BVD 36AB distance=91' 03355+4218 FMR 20Aa,Ab distance=91' 03280+4221 TDS2554 distance=91' 03362+4220 A 1535AB distance=92' 03389+4243 A 1538 distance=94' 03383+4448 S 430AB distance=96' 03383+4448 BU 1379BC distance=96' 03383+4448 BU 1379BD distance=96' 03343+4512 J 2411 distance=96' 03359+4213 ES 1516 distance=97' 03283+4508 SKF2401 distance=97' 03312+4204 BVD 189 distance=97' 03390+4445 ES 1312 distance=99' 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 03321+4340 COU1688 AB 153 0.4 1
Show 03321+4340 LDS9155 AC 137 14.7 1
Show 03320+4358 KPP3167 170 2.4 18
Show 03339+4351 SMA 37 AB 288 31.6 23
Show 03339+4351 SMA 37 AC 344 13.9 23
Show 03309+4359 LSC 27 265 0.3 24
Show 03348+4356 MMA 12 43 14.9 34
Show 03353+4351 A 1534 278 4.7 37
Show 03353+4354 MMA 13 117 14.3 38
Show 03348+4408 SMA 38 68 21.5 42
Show 03343+4416 HDS 453 84 0.3 44
Show 03322+4245 HDS 446 298 0.1 56
Show 03296+4251 CVR 42 209 119.8 57
Show 03356+4253 BUP 45 AB 216 45.3 61
Show 03356+4253 BUP 45 AC 90 177.6 61
Show 03356+4253 LDS9156 AD 284 82.2 61
Show 03375+4321 A 1536 AB 228 1.3 62
Show 03363+4258 TDS2597 135 2.0 63
Show 03347+4241 COU1689 296 1.1 66
Show 03266+4415 COU1684 43 0.6 70
Show 03370+4256 TDS2600 203 1.4 70
Show 03322+4450 CRI 4 100 2.0 71
Show 03260+4405 COU1683 179 0.3 71
Show 03257+4354 KPP 587 172 5.5 71
Show 03267+4420 COU1685 331 0.5 71
Show 03352+4235 BU 788 AB 303 2.6 74
Show 03352+4235 BU 788 AC 83 34.2 74
Show 03392+4344 TDS2612 319 1.7 77
Show 03255+4412 LDS2848 106 87.8 79
Show 03389+4308 A 1537 117 3.6 81
Show 03281+4452 COU1861 111 0.8 84
Show 03242+4333 LDS2846 15 5.7 86
Show 03400+4350 KPP2153 77 17.6 87
Show 03247+4417 ARG 55 AB 200 26.0 88
Show 03247+4417 SIN 9 AC 78 161.0 88
Show 03247+4417 SIN 9 AD 285 202.1 88
Show 03293+4503 STF 391 96 3.9 89
Show 03400+4321 AOT 7 243 6.4 89
Show 03355+4218 BVD 36 AB 291 39.0 91
Show 03355+4218 FMR 20 Aa,Ab 245 1.0 91
Show 03280+4221 TDS2554 227 0.8 91
Show 03362+4220 A 1535 AB 346 0.7 92
Show 03389+4243 A 1538 263 0.6 94
Show 03383+4448 S 430 AB 96 41.0 96
Show 03383+4448 BU 1379 BC 358 59.7 96
Show 03383+4448 BU 1379 BD 32 30.1 96
Show 03343+4512 J 2411 60 6.4 96
Show 03359+4213 ES 1516 87 4.3 97
Show 03283+4508 SKF2401 108 15.8 97
Show 03312+4204 BVD 189 165 23.2 97
Show 03390+4445 ES 1312 103 2.3 99

 
 
WDS 03321+4340 : COMPONENTS
 
 
  A B
B pa=159.7°
sep=0.41"
 
C pa=145.9°
sep=12.94"
pa=145.5°
sep=12.54"
 
 
03321+4340 A
 
 
Name HD 21727 Coord arcsec 2000 033205.10+434011.5 Mag 8.56 Spectral class G5 (yellow)
PmRA 298.00 PmDE -120.0 SAO 38921 HIP 16467
Tycho2 2874-00788-1 HD 21727 BD BD+43 744
Tycho2
Tycho2 2874-00788-1 Pflag RAmdeg 53.02123920 DEmdeg 43.66987181
PmRA 298.7 PmDE -119.4 E RAmdeg 8 E DEmdeg 10
E pmRA 0.8 E pmDE 0.9 EpRAm 1990.04 EpDEm 1989.46
Num 15 Q RAmdeg 0.5 Q DEmdeg 0.8 Q pmRA 0.5
Q pmDE 0.8 BTmag 9.470 E BTmag 0.020 VTmag 8.681
E VTmag 0.015 Prox 999 TYC T HIP 16467
CCDM RAdeg 53.02028750 DEdeg 43.67015333 EpRA 1990 1.71
EpDE 1990 1.53 E RAdeg 7.8 E DEdeg 9.5 Posflg
Corr -0.2
SAO
SAO 38921 DelFlag RA1950 PmRA1950 0.0247
DE1950 PmDE1950 -0.108 Vmag 8.7 SpType G5
Double code Source 4 CatNum 380 DM BD+43 744
DMcomp BDsup HD 21727 M HD 0
GC RA1950rad 0.91043748 DE1950rad 0.7592615 PmRA2000 0.0247
PmDE2000 -0.112
Hipparcos
Catalog H HIP 16467 Proxy RAhms 03 32 04.86
DEdms +43 40 12.6 Vmag 8.56 VarFlag R Vmag G
RAdeg 53.0202 DEdeg 43.6702 AstroRef Plx 18.58
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 21727 BD BD+43 744
CD CP Dm number +43 744 VIred 0.76
SpType G5 R SpType Coord arcsec 2000 033204.86+434012.6
Hipparcos 2
HIP 16467 Sn 1 So 0 Nc 1
RArad 0.9253776721 DErad 0.7621881108 Plx 16.45 PmRA 298.03
PmDE -119.25 E RArad 1.22 E DErad 0.95 E Plx 1.45
E pmRA 1.36 E pmDE 1.21 Hpmag 8.712 E Hpmag 0.0024
SHp 0.019 VA 0 BV 0.7 E BV 0.02
VI 0.75
CCDM
Ccdm 03321+4340 RComp Comp A Note1
Note2 Discov num DRAs -0.88 DDEs 11.0
R dRAs 65 Year Theta Rho
Obs 3 Vmag 8.7 Sp G5 PmNote *
PmRA 296 PmDE -115 Dm number +43 744 Cat1 BD
Name2 +43 380 Cat2 AGK2/3 HD 21727 M HD
ADS BDS M ADS BDS N IDS IDS 03252+4320A
HIC 16467
 
 
03321+4340 B
 
 
Coord arcsec 2000 033205.11+434011.1 Mag 8.9 Calc delta mag 0.34 Calc coord yes
CCDM
Ccdm 03321+4340 RComp Comp B Note1
Note2 Discov num COU1688 DRAs DDEs
R dRAs Year 1978 Theta 29 Rho 0.1
Obs 3 Vmag 8.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 03252+4320B
HIC 16467
 
 
03321+4340 C
 
 
Coord arcsec 2000 033205.77+434000.8 Mag 13.09 PmRA 299.00 PmDE -120.0
Calc delta mag 4.53 Calc coord yes
CCDM
Ccdm 03321+4340 RComp Comp C Note1
Note2 Discov num LDS DRAs -0.01 DDEs 0.8
R dRAs 65 Year 1960 Theta 120 Rho 16.0
Obs 1 Vmag 13.6 Sp PmNote
PmRA 296 PmDE -115 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 03253+4320B
HIC