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Current system
20585+4121
BLL 53
HD 199871


Nearby doubles
18' : 20569+4122
LDS2471

19' : 20572+4110
HDS2986

26' : 20576+4058
A 400

35' : 20555+4112
ES 1686

39' : 20581+4043
COU2430AB

43' : 21027+4130
LDS2482

48' : 21019+4055
TDT2704

48' : 21023+4139
ROE 21

50' : 20542+4111
ES 1684

52' : 20539+4115
KPP1503

54' : 21032+4131
LDS2484

55' : 20539+4139
BRT2280

56' : 21014+4037
HDS2995

59' : 21002+4027
TDT2688

59' : 20546+4042
ES 1685AB

60' : 20534+4139
ES 1574

61' : 20544+4042
STT 420

63' : 21039+4138
STTA214AB

65' : 21032+4158
COU2432

66' : 20547+4211
CVR 233

66' : 20598+4225
CLZ 78

66' : 21037+4053
LDS2485

67' : 20553+4218
OSO 137AB

69' : 20599+4016
ENG 79AB

70' : 20550+4219
LDS2467

70' : 20525+4138
LDS2463



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20585+4121 BLL 53 (HD 199871)

 
 
20h 58m 27.27s +41° 21' 27.9" P.A. 352.00 sep 169.0 mag 7.29,11.36 Sp M0III dist. 213.68 pc (697.02 l.y.)
 
 
Coord 2000 20585+4121 Discov num BLL  53 Comp Coord arcsec 2000 20 58 27.27 +41 21 27.9
Date first 1880 Date last 2010 Obs 12
Pa first 352 Pa last 351.5 P.A. Now (θ) 351.5°
Sep first 168.7 Sep last 169.01 Sep. Now (ρ) 169.01"
Mag pri 7.29 Mag sec 11.36 delta mag (ΔM) 4.07 Spectral class M0III (red)
Pri motion ra +006 Sec motion ra +013
Pri motion dec +005 Sec motion dec +011
Notes
rPM=0.541
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 199871 Constellation Cygnus SAO 50301 HIP 103528
Tycho2 3175-00969-1 Gaia DR2 1873462058759751552 HD 199871 GC 29278
BD BD+40 4373 Distance 213.68 Distance ly 697.02
 
 
WDS 20585+4121 BLL 53 (HD 199871) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Bll1872 orb - Ball, R.S. .
Bll1872 Proc. Royal Irish Acad., June 1872
Bll1884 Ma j Ball, R.S. 1884DunOP...5....1B
Bll1884 Pub. Dunsink Obs. 5, 1, 1884
Bll1913A Ma - Ball, R.S. 1913QB811.B8.......
Bll1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Bll1932A - Ball, R.S. 1932QB821.A43......
Bll1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20585+4121 BLL 53 1998 10 352 169.0 7.29 11.53 M0III D 205827.27+412127.9
20585+4121 BLL 53 2002 11 352 169.5 7.29 11.53 M0III D 205827.27+412127.9
20585+4121 BLL 53 2010 12 352 169.0 7.29 11.36 M0III 205827.27+412127.9

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

 
 
WDS 20585+4121 BLL 53 (HD 199871) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20585+4121 BLL 53 (HD 199871) : MEASURES
 
 
No records found.

 
 
WDS 20585+4121 (HD 199871) : VIRTUAL EYEPIECE
 
 

20585+4121 BLL 53A mag 7.29 Sp M0III 20585+4121 BLL 53B sep 168.2 P.A. 353.60 mag 11.36 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20585+4121 (HD 199871) : ALADIN DSS IMAGE @ 20h 58m 27.27s +41° 21' 27.9"
 
 
 
 
WDS 20585+4121 BLL 53 (HD 199871) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20585+4121 BLL 53 distance=0' 20569+4122 LDS2471 distance=18' 20572+4110 HDS2986 distance=19' 20576+4058 A 400 distance=26' 20555+4112 ES 1686 distance=35' 20581+4043 COU2430AB distance=39' 20581+4043 COU2430AB,C distance=39' 21027+4130 LDS2482 distance=43' 21019+4055 TDT2704 distance=48' 21023+4139 ROE 21 distance=48' 20542+4111 ES 1684 distance=50' 20539+4115 KPP1503 distance=52' 21032+4131 LDS2484 distance=54' 20539+4139 BRT2280 distance=55' 21014+4037 HDS2995 distance=56' 20546+4042 ES 1685BC distance=58' 21002+4027 TDT2688 distance=59' 20546+4042 ES 1685AB distance=59' 20534+4139 ES 1574 distance=60' 20544+4042 STT 420 distance=61' 21039+4138 STTA214BC distance=63' 21039+4138 STTA214AB distance=63' 21032+4158 COU2432 distance=65' 20547+4211 CVR 233 distance=66' 20598+4225 CLZ 78 distance=66' 21037+4053 LDS2485 distance=66' 20553+4218 OSO 137AB distance=67' 20553+4218 OSO 137AC distance=67' 20553+4218 OSO 137AD distance=67' 20553+4218 OSO 137AE distance=67' 20553+4218 OSO 137AF distance=67' 20553+4218 OSO 137AG distance=67' 20599+4016 COU2431Aa,Ab distance=69' 20599+4016 ENG 79AB distance=69' 20599+4016 LEP 98AD distance=69' 20599+4016 BUP 221AC distance=69' 20599+4016 LSC 1Aa1,2 distance=69' 20550+4219 LDS2467 distance=70' 20599+4016 BUP 221BC distance=70' 20525+4138 LDS2463 distance=70' 20599+4016 HDS2989Da,Db distance=71' 20599+4016 RAO 72DE distance=71' 20599+4016 SEI1363CR distance=72' 21044+4057 ROE 44 distance=72' 20569+4233 GRV 399 distance=74' 21050+4125 COU2298 distance=74' 20534+4208 LDS2464 distance=75' 21048+4144 COU2434 distance=75' 21027+4218 LDS6351 distance=76' 20519+4140 COU2428 distance=77' 20553+4231 STT 423 distance=78' 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 20585+4121 BLL 53 352 169.0
Show 20569+4122 LDS2471 43 3.2 18
Show 20572+4110 HDS2986 176 0.1 19
Show 20576+4058 A 400 69 1.9 26
Show 20555+4112 ES 1686 196 7.7 35
Show 20581+4043 COU2430 AB 254 0.4 39
Show 20581+4043 COU2430 AB,C 176 3.0 39
Show 21027+4130 LDS2482 53 3.0 43
Show 21019+4055 TDT2704 316 1.1 48
Show 21023+4139 ROE 21 224 9.1 48
Show 20542+4111 ES 1684 277 7.9 50
Show 20539+4115 KPP1503 94 11.3 52
Show 21032+4131 LDS2484 33 8.7 54
Show 20539+4139 BRT2280 192 5.0 55
Show 21014+4037 HDS2995 97 0.1 56
Show 20546+4042 ES 1685 BC 74 2.8 58
Show 21002+4027 TDT2688 104 0.5 59
Show 20546+4042 ES 1685 AB 73 24.2 59
Show 20534+4139 ES 1574 158 1.4 60
Show 20544+4042 STT 420 2 5.8 61
Show 21039+4138 STTA214 BC 244 106.3 63
Show 21039+4138 STTA214 AB 184 57.4 63
Show 21032+4158 COU2432 24 0.8 65
Show 20547+4211 CVR 233 235 61.5 66
Show 20598+4225 CLZ 78 347 38.2 66
Show 21037+4053 LDS2485 226 15.3 66
Show 20553+4218 OSO 137 AB 116 10.8 67
Show 20553+4218 OSO 137 AC 225 11.6 67
Show 20553+4218 OSO 137 AD 276 14.3 67
Show 20553+4218 OSO 137 AE 295 14.9 67
Show 20553+4218 OSO 137 AF 137 16.8 67
Show 20553+4218 OSO 137 AG 346 25.0 67
Show 20599+4016 COU2431 Aa,Ab 205 2.2 69
Show 20599+4016 ENG 79 AB 219 165.9 69
Show 20599+4016 LEP 98 AD 258 999.9 69
Show 20599+4016 BUP 221 AC 154 210.3 69
Show 20599+4016 LSC 1 Aa1,2 257 0.0 69
Show 20550+4219 LDS2467 193 20.0 70
Show 20599+4016 BUP 221 BC 107 203.7 70
Show 20525+4138 LDS2463 151 27.8 70
Show 20599+4016 HDS2989 Da,Db 143 0.1 71
Show 20599+4016 RAO 72 DE 118 19.8 71
Show 20599+4016 SEI1363 CR 37 8.7 72
Show 21044+4057 ROE 44 43 7.2 72
Show 20569+4233 GRV 399 6 64.8 74
Show 21050+4125 COU2298 147 0.9 74
Show 20534+4208 LDS2464 331 43.8 75
Show 21048+4144 COU2434 189 0.9 75
Show 21027+4218 LDS6351 156 134.5 76
Show 20519+4140 COU2428 113 0.7 77
Show 20553+4231 STT 423 76 2.7 78

 
 
WDS 20585+4121 : COMPONENTS
 
 
  A
B pa=353.6°
sep=168.20"
 
 
20585+4121 A
 
 
Componente originario normalizzato AB Name HD 199871 Coord arcsec 2000 205827.27+412127.9 Mag 7.29
Spectral class M0III (red) PmRA 6.00 PmDE 5.0 SAO 50301
HIP 103528 Tycho2 3175-00969-1 HD 199871 GC 29278
BD BD+40 4373
Tycho2
Tycho2 3175-00969-1 Pflag RAmdeg 314.61362178 DEmdeg 41.35774520
PmRA 9.1 PmDE 6.7 E RAmdeg 5 E DEmdeg 4
E pmRA 0.6 E pmDE 0.7 EpRAm 1990.58 EpDEm 1991.15
Num 16 Q RAmdeg 1.2 Q DEmdeg 1.5 Q pmRA 1.3
Q pmDE 1.6 BTmag 9.119 E BTmag 0.017 VTmag 7.293
E VTmag 0.010 Prox 999 TYC T HIP 103528
CCDM RAdeg 314.61359333 DEdeg 41.35772972 EpRA 1990 1.63
EpDE 1990 1.75 E RAdeg 4.5 E DEdeg 4.4 Posflg
Corr 0.0
SAO
SAO 50301 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 0.005 Vmag 7.7 SpType K5
Double code Source 70 CatNum 29278 DM BD+40 4373
DMcomp BDsup HD 199871 M HD 0
GC 29278 RA1950rad 5.48290464 DE1950rad 0.71842715 PmRA2000 0.0006
PmDE2000 0.002
Hipparcos
Catalog H HIP 103528 Proxy RAhms 20 58 27.26
DEdms +41 21 27.8 Vmag 7.11 VarFlag R Vmag H
RAdeg 314.614 DEdeg 41.3577 AstroRef Plx 4.93
CCDM 20585+4122 N CCDM I Nsys 1 Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 199871 BD BD+40 4373
CD CP Dm number +40 4373 VIred 1.52
SpType M0III R SpType Coord arcsec 2000 205827.26+412127.8
Hipparcos 2
HIP 103528 Sn 1 So 1 Nc 1
RArad 5.491043053 DErad 0.7218285836 Plx 4.68 PmRA 5.91
PmDE 4.57 E RArad 0.48 E DErad 0.62 E Plx 0.73
E pmRA 0.55 E pmDE 0.66 Hpmag 7.2334 E Hpmag 0.0015
SHp 0.012 VA 0 BV 1.516 E BV 0.012
VI 1.55
 
 
20585+4121 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205825.60+412415.1 Mag 11.36 PmRA 13.00
PmDE 11.0 Tycho2 3175-00837-1 Calc delta mag 4.07 Calc coord yes
Tycho2
Tycho2 3175-00837-1 Pflag RAmdeg 314.60459513 DEmdeg 41.40417775
PmRA 14.1 PmDE 11.7 E RAmdeg 46 E DEmdeg 45
E pmRA 1.2 E pmDE 1.1 EpRAm 1973.10 EpDEm 1971.11
Num 6 Q RAmdeg 1.7 Q DEmdeg 1.3 Q pmRA 1.7
Q pmDE 1.3 BTmag 11.772 E BTmag 0.069 VTmag 11.527
E VTmag 0.100 Prox 999 TYC HIP
CCDM RAdeg 314.60455167 DEdeg 41.40415111 EpRA 1990 1.66
EpDE 1990 1.74 E RAdeg 50.8 E DEdeg 51.4 Posflg
Corr 0.0