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Doubles in session


Current system
21509-8243
HJ 5278
Lam Oct


Nearby doubles
11' : 21459-8247
R 334

31' : 21378-8301
UC 4515

59' : 21556-8341
DAM1264

80' : 21528-8124
UC 4588

87' : 21455-8409
TDT3142

87' : 21385-8121
NSN 428

108' : 21422-8057
TDT3116

114' : 21382-8435
TDT3070

122' : 21596-8444
R 336

123' : 22051-8444
HJ 5292

128' : 21540-8036
HJ 5289

148' : 21538-8511
UC 4592

166' : 21334-8002
HJ 5262

181' : 21473-8543
TDT3154

188' : 21522-8551
HJ 5261

214' : 22094-8615
TDT3374AB

224' : 21582-7901
HDS3122

245' : 21475-7839
UC 4566

249' : 21534-7835
I 672

286' : 21477-7759
LDS6362AB

290' : 21475-7754
DAM 661



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.

21509-8243 HJ 5278 (Lam Oct)

 
 
21h 50m 54.51s -82° 43' 08.1" P.A. 62.00 sep 3.3 mag 5.56,7.26 Sp G8-K0III dist. 125.47 pc (409.28 l.y.)
 
 
Coord 2000 21509-8243 Discov num HJ 5278 Comp Coord arcsec 2000 21 50 54.51 -82 43 08.1
Date first 1835 Date last 2015 Obs 29
Pa first 83 Pa last 61.5 P.A. Now (θ) 61.5°
Sep first 3.4 Sep last 3.338 Sep. Now (ρ) 3.338"
Mag pri 5.56 Mag sec 7.26 delta mag (ΔM) 1.7 Spectral class G8-K0III (yellow/yellow-orange)
Pri motion ra +056 Sec motion ra
Pri motion dec -037 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Lam Oct Constellation Octans SAO 258914 HIP 107843
Tycho2 9524-02404-1 Gaia DR2 6345372863360976256 HD 206240 HR 8280
GC 30472 CP CP-83 722 Bayer Lambda Ophiuchi Bayer name Lam Oph
Flamsteed 10 Ophiuchi Flamsteed name 10 Oph Distance 125.47 Distance ly 409.28
Bayer greek λ Oph
Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Oph vs Oct)
 
 
WDS 21509-8243 HJ 5278 (Lam Oct) : NOTES
 
 
discov_num notes refcode
HJ 5278 lam Oct = 10 Oph
 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21509-8243 HJ 5278 2002 26 63 3.5 5.56 7.26 G8-K0III N D 215054.51-824308.1
21509-8243 HJ 5278 2008 28 63 3.5 5.56 7.26 G8-K0III N D 215054.51-824308.1
21509-8243 HJ 5278 2015 29 62 3.3 5.56 7.26 G8-K0III N 215054.51-824308.1

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

 
 
WDS 21509-8243 HJ 5278 (Lam Oct) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21509-8243 HJ 5278 (Lam Oct) : MEASURES
 
 
No records found.

 
 
WDS 21509-8243 (Lam Oct) : VIRTUAL EYEPIECE
 
 

21509-8243 HJ 5278A mag 5.56 Sp G8 21509-8243 HJ 5278B sep 1.6 P.A. 13.10 mag 7.26 Sp K0III 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 21509-8243 (Lam Oct) : ALADIN DSS IMAGE @ 21h 50m 54.51s -82° 43' 08.1"
 
 
 
 
WDS 21509-8243 HJ 5278 (Lam Oct) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21509-8243 HJ 5278 distance=0' 21459-8247 R 334 distance=11' 21378-8301 UC 4515 distance=31' 21556-8341 DAM1264 distance=59' 21528-8124 UC 4588 distance=80' 21455-8409 TDT3142 distance=87' 21385-8121 NSN 428 distance=87' 21422-8057 TDT3116 distance=108' 21382-8435 TDT3070 distance=114' 21596-8444 R 336 distance=122' 22051-8444 HJ 5292 distance=123' 21540-8036 HJ 5289 distance=128' 21538-8511 UC 4592 distance=148' 21334-8002 HJ 5262 distance=166' 21473-8543 TDT3154 distance=181' 21522-8551 HJ 5261 distance=188' 22094-8615 TDT3374AB distance=214' 21582-7901 HDS3122 distance=224' 21475-7839 UC 4566 distance=245' 21534-7835 I 672 distance=249' 21477-7759 LDS6362AB distance=286' 21477-7759 LDS6362AC distance=286' 21475-7754 DAM 661 distance=290' 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 21509-8243 HJ 5278 62 3.3
Show 21459-8247 R 334 112 2.8 11
Show 21378-8301 UC 4515 56 52.5 31
Show 21556-8341 DAM1264 20 15.6 59
Show 21528-8124 UC 4588 186 16.9 80
Show 21455-8409 TDT3142 290 0.5 87
Show 21385-8121 NSN 428 86 7.2 87
Show 21422-8057 TDT3116 98 0.6 108
Show 21382-8435 TDT3070 109 2.4 114
Show 21596-8444 R 336 342 27.7 122
Show 22051-8444 HJ 5292 152 5.2 123
Show 21540-8036 HJ 5289 47 16.9 128
Show 21538-8511 UC 4592 163 65.3 148
Show 21334-8002 HJ 5262 92 24.2 166
Show 21473-8543 TDT3154 280 0.7 181
Show 21522-8551 HJ 5261 195 4.9 188
Show 22094-8615 TDT3374 AB 325 2.4 214
Show 21582-7901 HDS3122 340 0.1 224
Show 21475-7839 UC 4566 14 35.6 245
Show 21534-7835 I 672 295 17.4 249
Show 21477-7759 LDS6362 AB 132 1.7 286
Show 21477-7759 LDS6362 AC 249 7.7 286
Show 21475-7754 DAM 661 195 1.9 290

 
 
WDS 21509-8243 : COMPONENTS
 
 
  A
B pa=13.1°
sep=1.64"
 
 
21509-8243 A
 
 
Componente originario normalizzato AB Name Lam Oct Coord arcsec 2000 215054.51-824308.1 Mag 5.56
Spectral class G8 (yellow) PmRA 56.00 PmDE -37.0 SAO 258914
HIP 107843 Tycho2 9524-02404-1 HD 206240 HR 8280
GC 30472 CP CP-83 722 Bayer Lambda Bayer name Lam
Tycho2
Tycho2 9524-02404-1 Pflag RAmdeg 327.72712683 DEmdeg -82.71891381
PmRA 56.3 PmDE -36.8 E RAmdeg 3 E DEmdeg 4
E pmRA 0.9 E pmDE 1.0 EpRAm 1991.38 EpDEm 1991.34
Num 14 Q RAmdeg 5.0 Q DEmdeg 1.8 Q pmRA 4.8
Q pmDE 1.8 BTmag 6.611 E BTmag 0.014 VTmag 5.563
E VTmag 0.009 Prox 33 TYC T HIP 107843
CCDM A RAdeg 327.72610056 DEdeg -82.71882917 EpRA 1990 1.73
EpDE 1990 1.69 E RAdeg 3.4 E DEdeg 3.5 Posflg D
Corr 0.1
SAO
SAO 258914 DelFlag RA1950 PmRA1950 0.0348
DE1950 PmDE1950 -0.033 Vmag 5.5 SpType G0
Double code Source 70 CatNum 30472 DM CP-83 722
DMcomp BDsup HD 206240 M HD 9
GC 30472 RA1950rad 5.68743147 DE1950rad -1.44777741 PmRA2000 0.0307
PmDE2000 -0.036
Hipparcos
Catalog H HIP 107843 Proxy H RAhms 21 50 54.25
DEdms -82 43 07.8 Vmag 5.27 VarFlag R Vmag H
RAdeg 327.726 DEdeg -82.7188 AstroRef A Plx 7.49
CCDM 21509-8243 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 64 Rho 3.233 HD 206240 BD
CD CP CP-83 722 Dm number -83 722 VIred 0.92
SpType G8/K0III+.. R SpType Coord arcsec 2000 215054.25-824307.8
Hipparcos 2
HIP 107843 Sn 15 So 3 Nc 2
RArad 5.719898466 DErad -1.4437158315 Plx 7.97 PmRA 68.14
PmDE -31.86 E RArad 0.38 E DErad 0.34 E Plx 0.45
E pmRA 0.47 E pmDE 0.4 Hpmag 5.4143 E Hpmag 0.0005
SHp 0.006 VA 0 BV 0.756 E BV 0.006
VI 0.8
CCDM
Ccdm 21509-8243 RComp Comp A Note1
Note2 Discov num DRAs 0.20 DDEs -7.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 5.5 Sp G0 PmNote *
PmRA 60 PmDE -27 Dm number -83 722 Cat1 CPD
Name2 258914 Cat2 SAO HD 206240 M HD
ADS BDS M ADS BDS N IDS IDS 21356S8311A
HIC 107843
 
 
21509-8243 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 215054.71-824306.5 Mag 7.26 Spectral class K0III (yellow-orange)
Calc delta mag 1.7 Calc coord yes
CCDM
Ccdm 21509-8243 RComp Comp B Note1
Note2 Discov num HJ 5278 DRAs DDEs
R dRAs Year 1946 Theta 070 Rho 3.1
Obs 13 Vmag 7.8 Sp A3 PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD 206241 M HD
ADS BDS M ADS BDS N N IDS IDS 21356S8311B
HIC 107843