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Doubles in session


Current system
08044+1217
BU 581 AB
HD 66509


Nearby doubles
15' : 08047+1204
STF1179AB

15' : 08035+1211
HO 350

20' : 08032+1228
SLE 458

25' : 08038+1240
OL 60

27' : 08057+1236
SLE 324

28' : 08028+1203
SLE 457

29' : 08025+1227
HO 349AB

32' : 08023+1223
SLE 318

37' : 08023+1158
SLE 454

39' : 08052+1141
SLE 460

39' : 08057+1251
BRT3283

42' : 08072+1219
HJ 80

42' : 08068+1240
SLE 327

44' : 08053+1137
GWP 970

44' : 08041+1135
SLE 321

44' : 08073+1213
HEI 473

44' : 08018+1154
SLE 453

46' : 08070+1152
GWP 975

46' : 08057+1136
FMR 203

49' : 08058+1133
SLE 462

50' : 08024+1138
SLE 319

50' : 08048+1128
CVR1128

51' : 08054+1305
SLE 461

51' : 08059+1113
SLE 325

52' : 08010+1203
SLE 317

52' : 08052+1127
TDS5511



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.

08044+1217 BU 581 AB (HD 66509)

 
 
08h 04m 23.10s +12° 17' 23.8" P.A. 242.00 sep 0.5 mag 8.46,8.83 Sp K0V dist. 33.2 pc (108.3 l.y.)
 
 
Coord 2000 08044+1217 Discov num BU  581 Comp AB Coord arcsec 2000 08 04 23.10 +12 17 23.8
Date first 1878 Date last 2021 Obs 226
Pa first 177 Pa last 241.5 P.A. Now (θ) 248.7°
Sep first 0.4 Sep last 0.457 Sep. Now (ρ) 0.477"
Mag pri 8.46 Mag sec 8.83 delta mag (ΔM) 0.37 Spectral class K0V (yellow-orange)
Pri motion ra +101 Sec motion ra +101
Pri motion dec -138 Sec motion dec -138
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
08044+1217 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 66509 97530 08 04 23 +12 17 24 BU 581 AB 2021 226 242 0.5 8.46 8.83 0.37 Y <===
Show 97530 08 04 23 +12 17 24 BU 581 AB,C 2017 87 222 5.5 8.46 11.78 3.32
Show 97530 08 04 23 +12 17 24 BU 581 AB,D 2015 8 169 213.0 8.46 11.09 2.63
Show 97530 08 04 23 +12 17 24 SLE 322 AB,E 2015 5 205 76.8 8.46 13.44 4.98
Show 97530 08 04 23 +12 17 24 SLE 322 AB,F 2015 4 140 268.2 8.46 12.08 3.62
Sextuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 66509 Constellation Cancer SAO 97530 HIP 39495
Tycho2 0789-00762-1 Gaia DR2 653032704866192768 HD 66509 GC 10945
ADS 6554 BD BD+12 1759 Distance 33.2 Distance ly 108.3
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.69y Periastron (T)1999.51y Semi-major axis (a)0.475a
Eccentricity (e)0.429 Inclination (i)54.9° Longitude of periastron (ω)295.7°
Node (Ω)113.8° Notesn ReferenceHrt2000b
Equinox Last observation1997 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 76.0 0.206
2001 94.0 0.256
2002 106.2 0.300
2003 115.6 0.332
2004 123.6 0.353
2005 130.9 0.364
2006 137.9 0.368
2007 144.9 0.368
2008 151.9 0.365
2009 159.1 0.360
2010 166.4 0.356
2011 173.9 0.353
2012 181.5 0.352
2013 189.1 0.353
2014 196.7 0.357
2015 203.9 0.363
2016 210.9 0.373
2017 217.5 0.384
2018 223.7 0.398
2019 229.5 0.412
2020 234.8 0.428
2021 239.8 0.445
2022 244.4 0.461
2023 248.7 0.477
2024 252.7 0.492
2025 256.5 0.507
2026 260.1 0.519
2027 263.5 0.530
2028 266.8 0.539
2029 270.0 0.545
2030 273.2 0.548


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


 
  


wds08044%2B1217a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 08044+1217 BU 581 AB (HD 66509) : NOTES
 
 
discov_num notes refcode
BU 581 See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 1.96 +/- 0.38, 1.75, and 0.85 Msun, respectively. Mlk2012
Star C (mag. 10.5, 5") is in slow direct motion about AB.
AB,C: Additional notes may be found in Burnham (1894). Bu_1894
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Bu_1894 Ma j Burnham, S.W. 1894PLicO...2....3B
Bu_1894 Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a) 1893AN....131..329B
Hrt2000b orb - Hartkopf, W.I. 2000IAUDS.141....1H
Hrt2000b Inf. Circ. 141, 1, 2000
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 BU Burnham, S.W. (BU 1 - 81)
179 SLE Soulie, G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08044+1217 BU 581 AB 2003 214 121 0.3 8.46 8.83 K0V NOD 080423.10+121723.8
08044+1217 BU 581 AB 2006 218 137 0.4 8.46 8.83 K0V NOD 080423.10+121723.8
08044+1217 BU 581 AB 2010 219 174 0.4 8.46 8.83 K0V NOD 080423.10+121723.8
08044+1217 BU 581 AB 2016 221 215 0.4 8.46 8.83 K0V NO 080423.10+121723.8
08044+1217 BU 581 AB 2017 223 220 0.4 8.46 8.83 K0V NO 080423.10+121723.8
08044+1217 BU 581 AB 2018 224 226 0.4 8.46 8.83 K0V NO 080423.10+121723.8
08044+1217 BU 581 AB 2021 226 242 0.5 8.46 8.83 K0V NO 080423.10+121723.8

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

 
 
WDS 08044+1217 BU 581 AB (HD 66509) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08044+1217 BU 581 AB (HD 66509) : MEASURES
 
 
No records found.

 
 
WDS 08044+1217 (HD 66509) : VIRTUAL EYEPIECE
 
 

08044+1217 BU 581A mag 8.46 Sp K0V 08044+1217 BU 581B sep 0.5 P.A. 240.90 mag 8.83 08044+1217 BU 581C sep 5.5 P.A. 221.30 mag 11.78 08044+1217 BU 581D sep 212.8 P.A. 168.90 mag 11.09 08044+1217 SLE 322E sep 76.5 P.A. 204.10 mag 13.44 08044+1217 SLE 322F sep 265.7 P.A. 141.00 mag 12.08 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 08044+1217 (HD 66509) : ALADIN DSS IMAGE @ 08h 04m 23.10s +12° 17' 23.8"
 
 
 
 
WDS 08044+1217 BU 581 AB (HD 66509) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08044+1217 BU 581AB distance=0' 08047+1204 STF1179AB distance=15' 08047+1204 BU 582BC distance=15' 08035+1211 HO 350 distance=15' 08032+1228 SLE 458 distance=20' 08038+1240 OL 60 distance=25' 08057+1236 SLE 324 distance=27' 08028+1203 SLE 457 distance=28' 08025+1227 HO 349AB distance=29' 08025+1227 HO 349AC distance=29' 08023+1223 SLE 318 distance=32' 08023+1158 SLE 454 distance=37' 08052+1141 SLE 460 distance=39' 08057+1251 BRT3283 distance=39' 08072+1219 HJ 80 distance=42' 08068+1240 SLE 327 distance=42' 08053+1137 GWP 970 distance=44' 08041+1135 SLE 321 distance=44' 08073+1213 HEI 473 distance=44' 08018+1154 SLE 453 distance=44' 08070+1152 GWP 975 distance=46' 08057+1136 FMR 203 distance=46' 08058+1133 SLE 462 distance=49' 08024+1138 SLE 319 distance=50' 08048+1128 CVR1128 distance=50' 08054+1305 SLE 461 distance=51' 08059+1113 SLE 325 distance=51' 08010+1203 SLE 317 distance=52' 08052+1127 TDS5511 distance=52' 08080+1214 SLE 329 distance=53' 08074+1145 J 1002 distance=56' 08026+1309 SLE 320CD distance=57' 08026+1309 SLE 320AB distance=58' 08026+1309 SLE 320AC distance=58' 08026+1309 SLE 320AD distance=58' 08055+1316 SLE 323 distance=62' 08004+1240 SLE 316 distance=63' 08076+1259 SLE 463 distance=63' 08001+1224 GWP 959 distance=64' 08071+1308 SLE 328 distance=64' 08089+1213 J 375AB distance=67' 08089+1213 J 375AC distance=67' 08003+1138 HJ 74 distance=71' 08067+1321 SLE 326 distance=72' 08053+1107 CBL 242 distance=72' 08069+1320 GWP 974 distance=73' 08092+1202 J 376 distance=74' 08024+1326 GWP 962 distance=75' 08075+1318 BPM 435 distance=76' 08096+1159 GWP 981 distance=80' 08000+1307 J 2051 distance=83' 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 08044+1217 BU 581 AB 242 0.5
Show 08044+1217 BU 581 AB,C 222 5.5
Show 08044+1217 BU 581 AB,D 169 213.0
Show 08044+1217 SLE 322 AB,E 205 76.8
Show 08044+1217 SLE 322 AB,F 140 268.2
Show 08047+1204 STF1179 AB 202 23.4 15
Show 08047+1204 BU 582 BC 58 4.1 15
Show 08035+1211 HO 350 160 7.6 15
Show 08032+1228 SLE 458 300 9.2 20
Show 08038+1240 OL 60 110 3.6 25
Show 08057+1236 SLE 324 133 18.8 27
Show 08028+1203 SLE 457 182 27.8 28
Show 08025+1227 HO 349 AB 227 10.3 29
Show 08025+1227 HO 349 AC 291 61.9 29
Show 08023+1223 SLE 318 46 6.0 32
Show 08023+1158 SLE 454 343 8.8 37
Show 08052+1141 SLE 460 160 19.4 39
Show 08057+1251 BRT3283 165 3.1 39
Show 08072+1219 HJ 80 106 22.2 42
Show 08068+1240 SLE 327 133 21.0 42
Show 08053+1137 GWP 970 74 22.7 44
Show 08041+1135 SLE 321 235 22.9 44
Show 08073+1213 HEI 473 212 1.9 44
Show 08018+1154 SLE 453 308 20.0 44
Show 08070+1152 GWP 975 180 12.3 46
Show 08057+1136 FMR 203 111 3.9 46
Show 08058+1133 SLE 462 128 20.2 49
Show 08024+1138 SLE 319 42 9.8 50
Show 08048+1128 CVR1128 39 4.8 50
Show 08054+1305 SLE 461 259 13.5 51
Show 08059+1113 SLE 325 288 7.4 51
Show 08010+1203 SLE 317 111 13.0 52
Show 08052+1127 TDS5511 109 1.1 52
Show 08080+1214 SLE 329 106 11.6 53
Show 08074+1145 J 1002 118 2.2 56
Show 08026+1309 SLE 320 CD 324 15.7 57
Show 08026+1309 SLE 320 AB 44 22.2 58
Show 08026+1309 SLE 320 AC 222 52.4 58
Show 08026+1309 SLE 320 AD 239 51.3 58
Show 08055+1316 SLE 323 285 17.7 62
Show 08004+1240 SLE 316 89 19.0 63
Show 08076+1259 SLE 463 166 11.0 63
Show 08001+1224 GWP 959 42 20.2 64
Show 08071+1308 SLE 328 55 9.8 64
Show 08089+1213 J 375 AB 154 9.8 67
Show 08089+1213 J 375 AC 353 14.8 67
Show 08003+1138 HJ 74 294 9.4 71
Show 08067+1321 SLE 326 215 10.0 72
Show 08053+1107 CBL 242 296 14.9 72
Show 08069+1320 GWP 974 31 89.0 73
Show 08092+1202 J 376 284 2.1 74

 
 
WDS 08044+1217 : COMPONENTS
 
 
  A B C D E
B pa=240.9°
sep=0.45"
 
C pa=221.3°
sep=5.47"
pa=219.6°
sep=5.05"
 
D pa=168.9°
sep=212.81"
pa=168.7°
sep=212.67"
pa=167.7°
sep=209.53"
 
E pa=204.1°
sep=76.50"
pa=203.9°
sep=76.14"
pa=202.8°
sep=71.29"
pa=332.5°
sep=156.69"
 
F pa=141.0°
sep=265.72"
pa=140.9°
sep=265.80"
pa=139.8°
sep=264.86"
pa=88.9°
sep=126.31"
pa=124.5°
sep=241.05"
 
 
08044+1217 A
 
 
Name HD 66509 Coord arcsec 2000 080423.10+121723.8 Mag 8.46 Spectral class K0V (yellow-orange)
PmRA 101.00 PmDE -138.0 SAO 97530 HIP 39495
Tycho2 0789-00762-1 HD 66509 GC 10945 BD BD+12 1759
Tycho2
Tycho2 0789-00762-1 Pflag RAmdeg 121.09643117 DEmdeg 12.28964004
PmRA 101.0 PmDE -137.6 E RAmdeg 8 E DEmdeg 10
E pmRA 1.1 E pmDE 1.1 EpRAm 1990.71 EpDEm 1990.12
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.5 Q pmRA 1.0
Q pmDE 1.5 BTmag 8.875 E BTmag 0.022 VTmag 7.948
E VTmag 0.015 Prox 57 TYC T HIP 39495
CCDM AB RAdeg 121.09619139 DEdeg 12.28996611 EpRA 1990 1.63
EpDE 1990 1.49 E RAdeg 8.3 E DEdeg 9.9 Posflg P
Corr 0.1
SAO
SAO 97530 DelFlag RA1950 PmRA1950 0.0072
DE1950 PmDE1950 -0.137 Vmag 7.9 SpType G5
Double code Source 70 CatNum 10945 DM BD+12 1759
DMcomp BDsup HD 66509 M HD 0
GC 10945 RA1950rad 2.1014137 DE1950rad 0.2170123 PmRA2000 0.0072
PmDE2000 -0.135
Hipparcos
Catalog H HIP 39495 Proxy H RAhms 08 04 23.10
DEdms +12 17 23.8 Vmag 7.82 VarFlag R Vmag G
RAdeg 121.096 DEdeg 12.2899 AstroRef A Plx 32.03
CCDM 08044+1217 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual C M HIP
Theta Rho HD 66509 BD BD+12 1759
CD CP Dm number +12 1759 VIred 0.86
SpType G5... R SpType Coord arcsec 2000 080423.10+121723.8
Hipparcos 2
HIP 39495 Sn 15 So 3 Nc 3
RArad 2.1135279977 DErad 0.2145000373 Plx 30.12 PmRA 78.06
PmDE -148.05 E RArad 1.5 E DErad 1.36 E Plx 1.43
E pmRA 1.81 E pmDE 1.96 Hpmag 7.9171 E Hpmag 0.0018
SHp 0.01 VA 0 BV 0.845 E BV 0.019
VI 0.89
CCDM
Ccdm 08044+1217 RComp Comp A Note1
Note2 Discov num DRAs -0.91 DDEs 21.9
R dRAs 10 Year Theta Rho
Obs 4 Vmag 8.7 Sp G5 PmNote *
PmRA 90 PmDE -150 Dm number +12 1759 Cat1 BD
Name2 +12 988 Cat2 AGK2/3 HD 66509 M HD
ADS BDS A 6554 M ADS BDS N IDS IDS 07588N1235A
HIC 39495
 
 
08044+1217 B
 
 
Coord arcsec 2000 080423.07+121723.6 Mag 8.83 PmRA 101.00 PmDE -138.0
Calc delta mag 0.37 Calc coord yes
CCDM
Ccdm 08044+1217 RComp Comp B Note1 *
Note2 Discov num BU 581 DRAs DDEs
R dRAs Year 1878 Theta Rho
Obs 99 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6554 M ADS BDS N IDS IDS 07588N1235B
HIC 39495
 
 
08044+1217 C
 
 
Coord arcsec 2000 080422.85+121719.7 Mag 11.78 PmRA -69.00 PmDE -209.0
Calc delta mag 3.32 Calc coord yes
CCDM
Ccdm 08044+1217 RComp Comp C Note1
Note2 Discov num BU 581 DRAs DDEs
R dRAs Year 1958 Theta 208 Rho 4.8
Obs 99 Vmag 10.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6554 M ADS BDS N IDS IDS 07588N1235C
HIC 39495
 
 
08044+1217 D
 
 
Coord arcsec 2000 080425.91+121355.0 Mag 11.09 PmRA 4.00 PmDE -3.0
Tycho2 0789-01154-1 Calc delta mag 2.63 Calc coord yes
Tycho2
Tycho2 0789-01154-1 Pflag RAmdeg 121.10873697 DEmdeg 12.23115328
PmRA 0.6 PmDE -5.2 E RAmdeg 89 E DEmdeg 102
E pmRA 2.5 E pmDE 2.6 EpRAm 1970.70 EpDEm 1961.98
Num 3 Q RAmdeg 0.6 Q DEmdeg 0.8 Q pmRA 0.6
Q pmDE 0.8 BTmag 12.762 E BTmag 0.401 VTmag 11.088
E VTmag 0.134 Prox 999 TYC HIP
CCDM RAdeg 121.10873528 DEdeg 12.23116500 EpRA 1990 1.59
EpDE 1990 1.54 E RAdeg 102.9 E DEdeg 128.2 Posflg
Corr 0.1
CCDM
Ccdm 08044+1217 RComp Comp D Note1
Note2 Discov num BU 581 DRAs 2.10 DDEs -187.8
R dRAs 65 Year 1921 Theta 166 Rho 227.6
Obs 1 Vmag 10.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 6554 M ADS BDS N IDS IDS 07588N1235D
HIC
 
 
08044+1217 E
 
 
Coord arcsec 2000 080420.97+121614.0 Mag 13.44 PmRA -8.00 PmDE -9.0
Calc delta mag 4.98 Calc coord yes
 
 
08044+1217 F
 
 
Coord arcsec 2000 080434.52+121357.4 Mag 12.08 PmRA -8.00 PmDE -3.0
Calc delta mag 3.62 Calc coord yes