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Current system
20024+2105
HDS 2855
BF Sge


Nearby doubles
24' : 20036+2050
GRV 308

35' : 20033+2034
BRT2463

38' : 20039+2034
COU 216

40' : 20029+2145
HJ 2924

47' : 20051+2039
BUP 203AB

49' : 19590+2118
TDT1899

55' : 20004+2018
BRT2462

57' : 20023+2009
COU 215

60' : 20026+2006
HU 353

62' : 20011+2203
ROE 11

62' : 19588+2029
TDT1896

65' : 20033+2209
OL 110

65' : 20045+2009
BRT2465

68' : 20072+2106
STF2631

71' : 19579+2032
BU 981AB

71' : 20035+2215
GII 49

76' : 19575+2035
TDT1876

77' : 19590+2206
HO 583

78' : 20063+2200
STJ 37

78' : 19585+2202
L 47

79' : 20042+1952
J 819

81' : 20076+2139
TDT2000

82' : 20082+2105
J 1168

83' : 19593+2215
WFC 262

84' : 19575+2018
BU 425AB

85' : 19583+2208
AG 244AB



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20024+2105 HDS 2855 (BF Sge)

 
 
20h 02m 23.08s +21° 05' 24.9" P.A. 146.00 sep 0.1 mag 9.86,10.19 Sp C5II dist. 757.58 pc (2471.23 l.y.)
 
 
Coord 2000 20024+2105 Discov num HDS2855 Comp Coord arcsec 2000 20 02 23.08 +21 05 24.9
Date first 1991 Date last 2012 Obs 2
Pa first 246 Pa last 145.7 P.A. Now (θ) 145.7°
Sep first 0.2 Sep last 0.14 Sep. Now (ρ) 0.14"
Mag pri 9.86 Mag sec 10.19 delta mag (ΔM) 0.33 Spectral class C5II (red carbon star)
Pri motion ra -001 Sec motion ra
Pri motion dec -006 Sec motion dec
Notes X (Dubious double)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name BF Sge Constellation Sagitta HIP 98662 Tycho2 1629-00945-1
Gaia DR2 1823887519027667328 HD 190048 BD BD+20 4390 Distance 757.58
Distance ly 2471.23
 
 
WDS 20024+2105 HDS 2855 (BF Sge) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (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
20024+2105 HDS2855 1991 1 246 0.2 9.86 10.19 C5II X 200223.08+210524.9
20024+2105 HDS2855 2012 2 146 0.1 9.86 10.19 C5II X 200223.08+210524.9

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

 
 
WDS 20024+2105 HDS 2855 (BF Sge) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20024+2105 HDS 2855 (BF Sge) : MEASURES
 
 
No records found.

 
 
WDS 20024+2105 (BF Sge) : VIRTUAL EYEPIECE
 
 

20024+2105 HDS2855A mag 9.86 Sp C5II 20024+2105 HDS2855B sep 0.1 P.A. 147.50 mag 10.19 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20024+2105 (BF Sge) : ALADIN DSS IMAGE @ 20h 02m 23.08s +21° 05' 24.9"
 
 
 
 
WDS 20024+2105 HDS 2855 (BF Sge) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20024+2105 HDS2855 distance=0' 20036+2050 GRV 308 distance=24' 20033+2034 BRT2463 distance=35' 20039+2034 COU 216 distance=38' 20029+2145 HJ 2924 distance=40' 20051+2039 BUP 203AB distance=47' 20051+2039 BUP 203AC distance=47' 20051+2039 BLL 44AD distance=47' 19590+2118 TDT1899 distance=49' 20004+2018 BRT2462 distance=55' 20023+2009 COU 215 distance=57' 20026+2006 HU 353 distance=60' 20011+2203 ROE 11 distance=62' 19588+2029 TDT1896 distance=62' 20033+2209 OL 110 distance=65' 20045+2009 BRT2465 distance=65' 20072+2106 STF2631 distance=68' 19579+2032 BU 981AB distance=71' 19579+2032 BU 981AC distance=71' 20035+2215 GII 49 distance=71' 19575+2035 TDT1876 distance=76' 19590+2206 HO 583 distance=77' 20063+2200 STJ 37 distance=78' 19585+2202 L 47 distance=78' 20042+1952 J 819 distance=79' 20076+2139 TDT2000 distance=81' 20082+2105 J 1168 distance=82' 19593+2215 WFC 262 distance=83' 19575+2018 BU 425AB distance=84' 19575+2018 BU 425AC distance=84' 19575+2018 BU 425AD distance=84' 19583+2208 AG 244AB distance=85' 19583+2208 AG 244AC distance=85' 19567+2034 TDT1866 distance=87' 19581+2003 TDS1027 distance=87' 19560+2038 A 2790CD distance=87' 19597+1947 J 1140AB distance=88' 19597+1947 J 1140AC distance=88' 20040+1940 J 3046 distance=89' 20063+1954 WAK 19 distance=91' 20086+2041 BRT2467 distance=92' 19583+2218 A 2791 distance=92' 20045+1937 J 3048 distance=93' 20065+1957 DAM 191BD distance=93' 20065+1957 J 1233AB distance=93' 20065+1957 DAM 191AC distance=93' 19560+2038 A 2790AB distance=94' 19566+2155 BRT2461 distance=95' 19570+2006 SKF1096 distance=96' 19595+1940 J 3039AB distance=97' 19570+2206 BOW 9 distance=97' 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 20024+2105 HDS2855 146 0.1
Show 20036+2050 GRV 308 213 38.1 24
Show 20033+2034 BRT2463 13 3.2 35
Show 20039+2034 COU 216 218 0.5 38
Show 20029+2145 HJ 2924 345 15.1 40
Show 20051+2039 BUP 203 AB 247 13.4 47
Show 20051+2039 BUP 203 AC 102 59.4 47
Show 20051+2039 BLL 44 AD 95 75.3 47
Show 19590+2118 TDT1899 295 0.5 49
Show 20004+2018 BRT2462 288 2.9 55
Show 20023+2009 COU 215 269 0.3 57
Show 20026+2006 HU 353 3 0.5 60
Show 20011+2203 ROE 11 215 5.7 62
Show 19588+2029 TDT1896 38 0.6 62
Show 20033+2209 OL 110 331 8.3 65
Show 20045+2009 BRT2465 209 3.0 65
Show 20072+2106 STF2631 339 4.7 68
Show 19579+2032 BU 981 AB 107 3.0 71
Show 19579+2032 BU 981 AC 56 30.3 71
Show 20035+2215 GII 49 331 4.2 71
Show 19575+2035 TDT1876 115 0.4 76
Show 19590+2206 HO 583 256 1.4 77
Show 20063+2200 STJ 37 198 1.4 78
Show 19585+2202 L 47 303 2.4 78
Show 20042+1952 J 819 134 2.1 79
Show 20076+2139 TDT2000 71 0.7 81
Show 20082+2105 J 1168 193 0.9 82
Show 19593+2215 WFC 262 31 13.2 83
Show 19575+2018 BU 425 AB 240 1.4 84
Show 19575+2018 BU 425 AC 40 22.0 84
Show 19575+2018 BU 425 AD 84 29.1 84
Show 19583+2208 AG 244 AB 273 1.5 85
Show 19583+2208 AG 244 AC 245 13.4 85
Show 19567+2034 TDT1866 90 0.5 87
Show 19581+2003 TDS1027 78 1.0 87
Show 19560+2038 A 2790 CD 103 5.8 87
Show 19597+1947 J 1140 AB 282 2.1 88
Show 19597+1947 J 1140 AC 324 17.1 88
Show 20040+1940 J 3046 99 5.2 89
Show 20063+1954 WAK 19 166 2.0 91
Show 20086+2041 BRT2467 55 4.4 92
Show 19583+2218 A 2791 136 0.5 92
Show 20045+1937 J 3048 272 5.9 93
Show 20065+1957 DAM 191 BD 218 9.8 93
Show 20065+1957 J 1233 AB 245 6.9 93
Show 20065+1957 DAM 191 AC 179 9.8 93
Show 19560+2038 A 2790 AB 119 3.9 94
Show 19566+2155 BRT2461 342 2.8 95
Show 19570+2006 SKF1096 225 3.9 96
Show 19595+1940 J 3039 AB 187 9.9 97
Show 19570+2206 BOW 9 52 0.8 97

 
 
WDS 20024+2105 : COMPONENTS
 
 
  A
B pa=147.5°
sep=0.14"
 
 
20024+2105 A
 
 
Componente originario normalizzato AB Name BF Sge Coord arcsec 2000 200223.08+210524.9 Mag 9.86
Spectral class C5II (red carbon star) PmRA -1.00 PmDE -6.0 HIP 98662
Tycho2 1629-00945-1 HD 190048 BD BD+20 4390
Tycho2
Tycho2 1629-00945-1 Pflag RAmdeg 300.59618068 DEmdeg 21.09022867
PmRA 2.0 PmDE -2.8 E RAmdeg 16 E DEmdeg 24
E pmRA 1.4 E pmDE 1.4 EpRAm 1990.26 EpDEm 1988.02
Num 7 Q RAmdeg 2.4 Q DEmdeg 1.8 Q pmRA 2.4
Q pmDE 1.9 BTmag 13.415 E BTmag 0.367 VTmag 9.605
E VTmag 0.023 Prox 363 TYC T HIP 98662
CCDM AB RAdeg 300.59617583 DEdeg 21.09023778 EpRA 1990 1.81
EpDE 1990 1.53 E RAdeg 16.9 E DEdeg 25.2 Posflg P
Corr 0.2
Hipparcos
Catalog H HIP 98662 Proxy H RAhms 20 02 23.08
DEdms +21 05 24.9 Vmag 9.14 VarFlag 2 R Vmag H
RAdeg 300.596 DEdeg 21.0902 AstroRef * Plx -0.01
CCDM 20024+2105 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 246 Rho 0.177 HD 190048 BD BD+20 4390
CD CP Dm number +20 4390 VIred 1.57
SpType C5II R SpType Coord arcsec 2000 200223.08+210524.9
Hipparcos 2
HIP 98662 Sn 55 So 3 Nc 2
RArad 5.2463928415 DErad 0.3680942348 Plx 1.32 PmRA -1.17
PmDE -5.43 E RArad 0.84 E DErad 0.67 E Plx 1.09
E pmRA 1.05 E pmDE 0.78 Hpmag 9.2613 E Hpmag 0.0069
SHp 0.083 VA 2 BV 1.6 E BV 0.51
VI 1.57
CCDM
Ccdm 20024+2105 RComp Comp A Note1
Note2 Discov num DRAs -0.91 DDEs 24.9
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.9 Sp CI PmNote *
PmRA -1 PmDE -6 Dm number +20 4390 Cat1 BD
Name2 +20 2168 Cat2 AGK2/3 HD 190048 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 98662
 
 
20024+2105 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200223.09+210524.8 Mag 10.19 Calc delta mag 0.33
Calc coord yes
CCDM
Ccdm 20024+2105 RComp Comp B Note1
Note2 Discov num HDS DRAs -0.92 DDEs 24.8
R dRAs 82 Year 1991 Theta 246 Rho 0.2
Obs 1 Vmag 10.2 Sp PmNote *
PmRA -1 PmDE -6 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 98662