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Current system
21517+2852
SHN 256


Nearby doubles
5' : 21517+2856
HLD 49

21' : 21510+2911
A 889AB

27' : 21538+2856
MLB 495

31' : 21524+2823
NSN 67

32' : 21540+2852
GRV 519

43' : 21539+2821
WSI 8

49' : 21553+2850
COU 836

53' : 21530+2939
BRT 59

57' : 21474+2855
AG 420

58' : 21505+2756
AZC 116

58' : 21480+2819
MLB 541

59' : 21474+2834
A 300AB

59' : 21561+2846
COU 837AB

60' : 21556+2823
MLB 577AB

61' : 21503+2754
MLB 576

64' : 21521+2748
HO 171

65' : 21469+2907
CVR 919

65' : 21565+2900
HJ 1706

70' : 21555+2942
HO 609AB

70' : 21473+2932
STJ 58

73' : 21470+2930
GRV 503

74' : 21461+2855
BRT 58

77' : 21575+2856
LEP 104

80' : 21559+2753
HJ 1704

82' : 21462+2817
MLB 540AB

83' : 21575+2923
UC 4612



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

21517+2852 SHN 256

 
 
21h 51m 40.82s +28° 51' 32.2" P.A. -1.00 sep 0.6 mag 12.50,14.20
 
 
Coord 2000 21517+2852 Discov num SHN 256 Comp Coord arcsec 2000 21 51 40.82 +28 51 32.2
Date first 1996 Date last 1996 Obs 0
Pa first -1 Pa last -1 P.A. Now (θ) -1
Sep first 0.6 Sep last 0.571 Sep. Now (ρ) 0.571"
Mag pri 12.50 Mag sec 14.20 delta mag (ΔM) 1.7 Spectral class
Pri motion ra -078 Sec motion ra
Pri motion dec -033 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus Gaia DR2 1896400139051275904
 
 
WDS 21517+2852 SHN 256 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Shn1993 O j Schneider, G. & Anderson, C. 1993PASP..105..367S
Shn1993 PASP 105, 367, 1993
Shn1998 Hf j Schneider, G., Hershey, J.L., & Wenz, M.T. 1998PASP..110.1012S
Shn1998 PASP 110, 1012, 1998
Shn2004 Hn - Schneider, G., Song, I., Zuckerman, B., Becklin, E., Lowrance, P., Macintosh, B., 2004AAS...205.1114S
Shn2004 Bessell, M., Dumas, C., & Chauvin, G.
Shn2004 BAAS 205, 1114, 2004 (all data also in Son2006) 2006ApJ...652..724
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256   0   12.50 14.20 215140.82+285132.2
21517+2852 SHN 256 1996 0 -1 0.6 12.50 14.20 215140.82+285132.2

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

 
 
WDS 21517+2852 SHN 256 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21517+2852 SHN 256 : MEASURES
 
 
No records found.

 
 
WDS 21517+2852 : VIRTUAL EYEPIECE
 
 

21517+2852 SHN 256A mag 12.5 21517+2852 SHN 256B mag 14.2 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 21517+2852 : ALADIN DSS IMAGE @ 21h 51m 40.82s +28° 51' 32.2"
 
 
 
 
WDS 21517+2852 SHN 256 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21517+2852 SHN 256 distance=0' 21517+2856 HLD 49 distance=5' 21510+2911 A 889AB distance=21' 21510+2911 A 889Aa,Ab distance=21' 21538+2856 MLB 495 distance=27' 21524+2823 NSN 67 distance=31' 21540+2852 GRV 519 distance=32' 21539+2821 WSI 8 distance=43' 21553+2850 COU 836 distance=49' 21530+2939 BRT 59 distance=53' 21474+2855 AG 420 distance=57' 21505+2756 AZC 116 distance=58' 21480+2819 MLB 541 distance=58' 21556+2823 MLB 577BC distance=59' 21474+2834 A 300AB distance=59' 21474+2834 A 300AC distance=59' 21474+2834 A 300AD distance=59' 21561+2846 COU 837AB distance=59' 21561+2846 GII 104AC distance=59' 21556+2823 MLB 577AB distance=60' 21503+2754 MLB 576 distance=61' 21521+2748 HO 171 distance=64' 21469+2907 CVR 919 distance=65' 21565+2900 HJ 1706 distance=65' 21555+2942 HO 609AB distance=70' 21555+2942 HO 609AC distance=70' 21555+2942 HO 609AD distance=70' 21555+2942 HO 609AE distance=70' 21473+2932 STJ 58 distance=70' 21470+2930 GRV 503 distance=73' 21461+2855 BRT 58 distance=74' 21575+2856 LEP 104 distance=77' 21559+2753 HJ 1704 distance=80' 21462+2817 MLB 540AB distance=82' 21462+2817 MLB 540AC distance=82' 21462+2817 ABH 152AD distance=82' 21462+2817 ABH 152AE distance=82' 21575+2923 UC 4612 distance=83' 21572+2938 TDT3258 distance=86' 21452+2914 UC 4550 distance=89' 21477+2740 CVR 922 distance=89' 21454+2819 J 3145 distance=90' 21564+3001 MLB 721AB distance=94' 21564+3001 MLB 721AC distance=94' 21458+2945 DAM 236 distance=95' 21441+2845 ES 521DE distance=97' 21441+2845 FYM 25DG distance=97' 21516+3030 MLB 669 distance=99' 21458+2954 TDT3146 distance=99' 21444+2824 KPP3373 distance=100' 21441+2845 STF2822AB distance=100' 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 21517+2852 SHN 256 -1 0.6
Show 21517+2856 HLD 49 341 2.1 5
Show 21510+2911 A 889 AB 15 0.2 21
Show 21510+2911 A 889 Aa,Ab 323 0.0 21
Show 21538+2856 MLB 495 134 4.8 27
Show 21524+2823 NSN 67 285 5.1 31
Show 21540+2852 GRV 519 318 22.1 32
Show 21539+2821 WSI 8 142 0.1 43
Show 21553+2850 COU 836 161 1.3 49
Show 21530+2939 BRT 59 355 4.4 53
Show 21474+2855 AG 420 145 7.5 57
Show 21505+2756 AZC 116 353 20.9 58
Show 21480+2819 MLB 541 340 9.9 58
Show 21556+2823 MLB 577 BC 18 6.4 59
Show 21474+2834 A 300 AB 252 2.3 59
Show 21474+2834 A 300 AC 29 7.5 59
Show 21474+2834 A 300 AD 170 8.4 59
Show 21561+2846 COU 837 AB 150 1.2 59
Show 21561+2846 GII 104 AC 105 1.9 59
Show 21556+2823 MLB 577 AB 300 48.8 60
Show 21503+2754 MLB 576 267 13.1 61
Show 21521+2748 HO 171 342 0.8 64
Show 21469+2907 CVR 919 201 23.5 65
Show 21565+2900 HJ 1706 260 10.0 65
Show 21555+2942 HO 609 AB 356 3.3 70
Show 21555+2942 HO 609 AC 132 22.1 70
Show 21555+2942 HO 609 AD 147 30.4 70
Show 21555+2942 HO 609 AE 347 31.7 70
Show 21473+2932 STJ 58 193 1.8 70
Show 21470+2930 GRV 503 331 20.4 73
Show 21461+2855 BRT 58 165 4.4 74
Show 21575+2856 LEP 104 189 85.0 77
Show 21559+2753 HJ 1704 317 5.6 80
Show 21462+2817 MLB 540 AB 256 4.1 82
Show 21462+2817 MLB 540 AC 322 8.7 82
Show 21462+2817 ABH 152 AD 68 41.8 82
Show 21462+2817 ABH 152 AE 96 80.1 82
Show 21575+2923 UC 4612 23 64.1 83
Show 21572+2938 TDT3258 262 1.8 86
Show 21452+2914 UC 4550 15 42.5 89
Show 21477+2740 CVR 922 225 9.9 89
Show 21454+2819 J 3145 112 5.4 90
Show 21564+3001 MLB 721 AB 15 1.6 94
Show 21564+3001 MLB 721 AC 200 6.9 94
Show 21458+2945 DAM 236 143 5.9 95
Show 21441+2845 ES 521 DE 286 17.5 97
Show 21441+2845 FYM 25 DG 164 89.6 97
Show 21516+3030 MLB 669 309 3.2 99
Show 21458+2954 TDT3146 359 2.5 99
Show 21444+2824 KPP3373 242 2.1 100
Show 21441+2845 STF2822 AB 325 1.6 100

 
 
WDS 21517+2852 : COMPONENTS
 
 
  A
B pa=0.0°
sep=0.00"
 
 
21517+2852 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 215140.82+285132.2 Mag 12.5 PmRA -78.00
PmDE -33.0
 
 
21517+2852 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 215140.82+285132.2 Mag 14.2 Calc delta mag 1.7
Calc coord yes