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Doubles in session


Current system
21098+2915
DU 3


Nearby doubles
22' : 21094+2850
DOB9002

30' : 21109+2925
BAG 29

34' : 21088+2916
MLB 487

35' : 21091+2922
COU1332

38' : 21083+2913
COU1331

42' : 21125+2821
HO 152

43' : 21092+2820
MLB 537

48' : 21144+2905
STF2779AB

48' : 21118+2943
HAU 27

53' : 21075+2924
TDT2769

54' : 21129+2944
MLB 667

55' : 21072+2833
COU 528

56' : 21134+2813
BRT3365

59' : 21150+2917
GRV 438

60' : 21119+2758
TDT2814

61' : 21153+2848
MLB 488

62' : 21139+2809
TDT2843

64' : 21078+2945
MLB 715AB

65' : 21061+2843
LDS2939

66' : 21070+2816
HJ 1611

66' : 21159+2858
HDS3025

70' : 21162+2858
TDT2873

70' : 21065+2933
AG 413

71' : 21057+2912
GRV 416

72' : 21103+2744
GRV 432

73' : 21055+2901
MLB 536



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

21098+2915 DU 3

 
 
21h 10m 54.59s +28° 56' 10.4" P.A. 15.00 sep 6.1 mag 10.67,10.69
 
 
Coord 2000 21098+2915 Discov num DU    3 Comp Coord arcsec 2000 21 10 54.59 +28 56 10.4
Date first 1873 Date last 2016 Obs 18
Pa first 18 Pa last 14.9 P.A. Now (θ) 14.9°
Sep first 6.4 Sep last 6.123 Sep. Now (ρ) 6.123"
Mag pri 10.67 Mag sec 10.69 delta mag (ΔM) 0.02 Spectral class
Pri motion ra +038 Sec motion ra +036
Pri motion dec -015 Sec motion dec -013
Notes N T (See Notes, Parallax indicates physical)
rPM=0.069 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2185-02284-1 Gaia DR2 1851421867140809216
 
 
WDS 21098+2915 DU 3 : NOTES
 
 
discov_num notes refcode
DU 3 Aka WFC 234. DM number incorrectly listed as BD+28 4015 in BDS.
 
 
REFERENCES
 
 
refcode metd author reference
Du_1871 orb - Duner, N.C. 1871AN.....78..315D
Du_1871 AN 78, 315, #1868, 1871
Du_1876 Ma - Duner, N.C. .
Du_1876 +orb Mesures Microm. Lund, 1876
Du_1878A orb - Duner, N.C. .
Du_1878A cited by Flammarion ("Cat. des Etoiles Doubles", 1878)
Du_1878B Ma - Duner, N.C. 1878Obs.....2..146G
Du_1878B cited by Gledhill (Obs 2, 146, 1878)
Du_1906A Ma - Duner, N.C. 1906MmRAS..56....1L
Du_1906A cited by Lewis (MemRAS 56, 1, 1906)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21098+2915 DU 3 1926 5 200 6.0 10.60 10.70
21098+2915 DU 3 1999 8 196 6.1 10.67 10.69 D 211054.59+285610.4
21098+2915 DU 3 2011 9 195 6.0 10.69 10.67 N D 211054.59+285610.4
21098+2915 DU 3 2016 12 16 6.1 10.67 10.69 N 211054.59+285610.4

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

 
 
WDS 21098+2915 DU 3 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21098+2915 DU 3 : MEASURES
 
 
No records found.

 
 
WDS 21098+2915 : VIRTUAL EYEPIECE
 
 

21098+2915 DU 3A mag 10.67 21098+2915 DU 3B sep 6.1 P.A. 13.10 mag 10.69 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21098+2915 : ALADIN DSS IMAGE @ 21h 10m 54.59s +28° 56' 10.4"
 
 
 
 
WDS 21098+2915 DU 3 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21098+2915 DU 3 distance=0' 21094+2850 DOB9002 distance=22' 21109+2925 BAG 29 distance=30' 21088+2916 MLB 487 distance=34' 21091+2922 COU1332 distance=35' 21083+2913 COU1331 distance=38' 21125+2821 HO 152 distance=42' 21092+2820 MLB 537 distance=43' 21144+2905 STF2779AB distance=48' 21144+2905 STF2779AC distance=48' 21118+2943 HAU 27 distance=48' 21075+2924 TDT2769 distance=53' 21129+2944 MLB 667 distance=54' 21072+2833 COU 528 distance=55' 21134+2813 BRT3365 distance=56' 21150+2917 GRV 438 distance=59' 21119+2758 TDT2814 distance=60' 21153+2848 MLB 488 distance=61' 21139+2809 TDT2843 distance=62' 21078+2945 MLB 715AB distance=64' 21078+2945 MLB 715AC distance=64' 21061+2843 LDS2939 distance=65' 21070+2816 HJ 1611 distance=66' 21159+2858 HDS3025 distance=66' 21162+2858 TDT2873 distance=70' 21065+2933 AG 413 distance=70' 21057+2912 GRV 416 distance=71' 21103+2744 GRV 432 distance=72' 21055+2901 MLB 536 distance=73' 21151+2808 J 1154 distance=74' 21162+2928 J 1784 distance=76' 21058+2931 LDS2938 distance=76' 21054+2824 MLB 666 distance=80' 21086+3012 STF2762AB distance=82' 21086+3012 STF2762AC distance=82' 21086+3012 STF2762AD distance=82' 21129+3014 BAS 7Aa,Ab distance=82' 21129+3014 BUP 227AB distance=82' 21129+3014 BUP 227AC distance=82' 21129+3014 BUP 227AD distance=82' 21129+3014 FYM 141AE distance=82' 21129+3014 FYM 141AF distance=82' 21129+3014 FYM 141AG distance=82' 21070+3001 J 1319 distance=83' 21046+2902 TDT2726 distance=84' 21061+2801 COU 525 distance=85' 21077+3009 KPP1031 distance=85' 21152+2753 COU 531 distance=86' 21167+2819 MLB 574 distance=86' 21162+2948 TDT2872 distance=87' 21156+2957 TDT2864 distance=87' 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 21098+2915 DU 3 15 6.1
Show 21094+2850 DOB9002 104 18.6 22
Show 21109+2925 BAG 29 174 0.2 30
Show 21088+2916 MLB 487 142 4.3 34
Show 21091+2922 COU1332 20 0.2 35
Show 21083+2913 COU1331 37 0.3 38
Show 21125+2821 HO 152 158 0.2 42
Show 21092+2820 MLB 537 99 7.0 43
Show 21144+2905 STF2779 AB 164 15.1 48
Show 21144+2905 STF2779 AC 71 67.7 48
Show 21118+2943 HAU 27 297 50.0 48
Show 21075+2924 TDT2769 157 1.1 53
Show 21129+2944 MLB 667 30 2.4 54
Show 21072+2833 COU 528 70 1.2 55
Show 21134+2813 BRT3365 244 6.0 56
Show 21150+2917 GRV 438 8 15.2 59
Show 21119+2758 TDT2814 290 2.3 60
Show 21153+2848 MLB 488 306 11.4 61
Show 21139+2809 TDT2843 162 1.0 62
Show 21078+2945 MLB 715 AB 40 5.5 64
Show 21078+2945 MLB 715 AC 336 25.3 64
Show 21061+2843 LDS2939 320 5.9 65
Show 21070+2816 HJ 1611 279 10.7 66
Show 21159+2858 HDS3025 46 0.2 66
Show 21162+2858 TDT2873 277 0.8 70
Show 21065+2933 AG 413 107 2.7 70
Show 21057+2912 GRV 416 137 38.2 71
Show 21103+2744 GRV 432 349 65.8 72
Show 21055+2901 MLB 536 236 5.4 73
Show 21151+2808 J 1154 108 1.8 74
Show 21162+2928 J 1784 338 5.0 76
Show 21058+2931 LDS2938 247 23.5 76
Show 21054+2824 MLB 666 352 1.4 80
Show 21086+3012 STF2762 AB 303 3.3 82
Show 21086+3012 STF2762 AC 229 59.3 82
Show 21086+3012 STF2762 AD 66 73.1 82
Show 21129+3014 BAS 7 Aa,Ab 246 0.0 82
Show 21129+3014 BUP 227 AB 205 65.2 82
Show 21129+3014 BUP 227 AC 300 91.5 82
Show 21129+3014 BUP 227 AD 63 105.3 82
Show 21129+3014 FYM 141 AE 76 42.8 82
Show 21129+3014 FYM 141 AF 267 63.6 82
Show 21129+3014 FYM 141 AG 97 70.7 82
Show 21070+3001 J 1319 206 1.7 83
Show 21046+2902 TDT2726 311 0.6 84
Show 21061+2801 COU 525 168 1.1 85
Show 21077+3009 KPP1031 334 8.3 85
Show 21152+2753 COU 531 144 0.9 86
Show 21167+2819 MLB 574 334 7.7 86
Show 21162+2948 TDT2872 163 0.7 87
Show 21156+2957 TDT2864 100 0.9 87

 
 
WDS 21098+2915 : COMPONENTS
 
 
  A
B pa=13.1°
sep=6.08"
 
 
21098+2915 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 211054.59+285610.4 Mag 10.67 PmRA 38.00
PmDE -15.0 Tycho2 2185-02284-1
Tycho2
Tycho2 2185-02284-1 Pflag RAmdeg 317.72746652 DEmdeg 28.93623848
PmRA 38.1 PmDE -15.6 E RAmdeg 30 E DEmdeg 36
E pmRA 2.2 E pmDE 2.2 EpRAm 1989.63 EpDEm 1988.32
Num 3 Q RAmdeg 0.3 Q DEmdeg 1.1 Q pmRA 0.3
Q pmDE 1.0 BTmag 11.465 E BTmag 0.061 VTmag 10.672
E VTmag 0.047 Prox 60 TYC T HIP
CCDM RAdeg 317.72736528 DEdeg 28.93627611 EpRA 1990 1.62
EpDE 1990 1.36 E RAdeg 30.4 E DEdeg 37.1 Posflg
Corr 0.1
 
 
21098+2915 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211054.69+285616.3 Mag 10.69 PmRA 36.00
PmDE -13.0 Tycho2 2185-02284-2 Calc delta mag 0.02 Calc coord yes
Tycho2
Tycho2 2185-02284-2 Pflag RAmdeg 317.72795678 DEmdeg 28.93784860
PmRA 34.9 PmDE -11.8 E RAmdeg 31 E DEmdeg 38
E pmRA 2.2 E pmDE 2.2 EpRAm 1989.50 EpDEm 1987.96
Num 3 Q RAmdeg 1.7 Q DEmdeg 0.6 Q pmRA 1.7
Q pmDE 0.5 BTmag 11.571 E BTmag 0.064 VTmag 10.688
E VTmag 0.048 Prox 60 TYC T HIP
CCDM RAdeg 317.72786361 DEdeg 28.93787694 EpRA 1990 1.62
EpDE 1990 1.33 E RAdeg 31.2 E DEdeg 38.6 Posflg
Corr 0.1