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Doubles in session


Current system
21526+4714
LI 7 AB
V1578 Cyg


Nearby doubles
10' : 21535+4716
COU2320

13' : 21515+4706
HJ 1701

16' : 21511+4711
A 774

28' : 21547+4730
A 890

28' : 21543+4652
DAM 298

31' : 21552+4700
TDT3240

32' : 21495+4716
HJ 1698

32' : 21545+4650
ES 2714

32' : 21555+4703
HJ 1705

34' : 21549+4651
DAM 299

36' : 21492+4702
COU2317AB

56' : 21532+4619
SLN 43

59' : 21514+4811
TDT3198

62' : 21466+4713
HJ 1692

62' : 21473+4644
SRW 11AB

64' : 21500+4615
KPP 870

66' : 21477+4759
COU2316AB

68' : 21488+4810
KPP1210

73' : 21531+4826
COU2319AB

73' : 21470+4759
A 773

73' : 21589+4748
ES 1176AB

73' : 21580+4627
COU2236

76' : 21556+4605
TDT3245

78' : 21451+4733
CON 42AB

80' : 21575+4816
ES 682

81' : 21598+4746
TDS1151



Selections
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Binary Systems
Triple Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21526+4714 LI 7 AB (V1578 Cyg)

 
 
21h 52m 34.09s +47° 13' 43.6" P.A. 40.00 sep 4.7 mag 10.16,13.90 Sp B9.5Ve dist. 1000 pc (3262 l.y.)
 
 
Coord 2000 21526+4714 Discov num LI    7 Comp AB Coord arcsec 2000 21 52 34.09 +47 13 43.6
Date first 1971 Date last 2015 Obs 5
Pa first 45 Pa last 40.3 P.A. Now (θ) 40.3°
Sep first 5.0 Sep last 4.677 Sep. Now (ρ) 4.677"
Mag pri 10.16 Mag sec 13.90 delta mag (ΔM) 3.74 Spectral class B9.5Ve (blue-white)
Pri motion ra -003 Sec motion ra
Pri motion dec -002 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21526+4714 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show V1578 Cyg 21 52 34 +47 13 44 LI 7 AB 2015 5 40 4.7 10.16 13.90 3.74 <===
Show 21 52 34 +47 13 44 LI 7 AC 2015 4 207 6.0 10.20 14.40 4.20
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V1578 Cyg Constellation Cygnus HIP 107983 Tycho2 3608-00755-1
Gaia DR2 1974732783388041216 BD BD+46 3471 Distance 1000 Distance ly 3262
 
 
WDS 21526+4714 LI 7 AB (V1578 Cyg) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Li_1994 Ci j Li, W., Evans, N.J., Harvey, P.M., & Colome,C. 1994ApJ...433..199L
Li_1994 +T ApJ 433, 199, 1994
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21526+4714 LI 7 AB 2000 3 39 4.5 10.16 13.90 B9.5Ve D 215234.09+471343.6
21526+4714 LI 7 AB 2015 5 40 4.7 10.16 13.90 B9.5Ve 215234.09+471343.6

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

 
 
WDS 21526+4714 LI 7 AB (V1578 Cyg) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21526+4714 LI 7 AB (V1578 Cyg) : MEASURES
 
 
No records found.

 
 
WDS 21526+4714 (V1578 Cyg) : VIRTUAL EYEPIECE
 
 

21526+4714 LI 7A mag 10.16 Sp B9.5Ve 21526+4714 LI 7B sep 4.1 P.A. 29.90 mag 13.9 21526+4714 LI 7C sep 5.7 P.A. 198.90 mag 14.4 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 21526+4714 (V1578 Cyg) : ALADIN DSS IMAGE @ 21h 52m 34.09s +47° 13' 43.6"
 
 
 
 
WDS 21526+4714 LI 7 AB (V1578 Cyg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21526+4714 LI 7AB distance=0' 21535+4716 COU2320 distance=10' 21515+4706 HJ 1701 distance=13' 21511+4711 A 774 distance=16' 21547+4730 A 890 distance=28' 21543+4652 DAM 298 distance=28' 21552+4700 TDT3240 distance=31' 21495+4716 HJ 1698 distance=32' 21545+4650 ES 2714 distance=32' 21555+4703 HJ 1705 distance=32' 21549+4651 DAM 299 distance=34' 21492+4702 COU2317AB distance=36' 21492+4702 COU2317AC distance=36' 21532+4619 SLN 43 distance=56' 21514+4811 TDT3198 distance=59' 21466+4713 HJ 1692 distance=62' 21473+4644 SRW 11AB distance=62' 21473+4644 SRW 11AC distance=62' 21500+4615 KPP 870 distance=64' 21477+4759 COU2316AB distance=66' 21477+4759 GII 294Aa,Ab distance=66' 21488+4810 KPP1210 distance=68' 21531+4826 COU2319AB distance=73' 21531+4826 GII 87AC distance=73' 21531+4826 COU2319AD distance=73' 21470+4759 A 773 distance=73' 21589+4748 ES 1176AB distance=73' 21589+4748 ES 1176BC distance=73' 21580+4627 COU2236 distance=73' 21556+4605 TDT3245 distance=76' 21451+4733 CON 42AB distance=78' 21451+4733 CON 42AC distance=78' 21575+4816 ES 682 distance=80' 21598+4746 TDS1151 distance=81' 21586+4806 TDT3269 distance=81' 22008+4717 WAK 7CD distance=83' 22007+4722 COU2447 distance=83' 22008+4717 WAK 6AB distance=84' 21590+4807 COU2446 distance=84' 21588+4619 UC 267 distance=85' 21564+4829 TVB 14 distance=85' 21539+4839 COU2321 distance=87' 21441+4707 TDT3125 distance=87' 21450+4633 NSN 748 distance=88' 22002+4756 A 778AB distance=89' 22002+4756 A 778AB,C distance=89' 21548+4548 COU2137Aa,Ab distance=90' 21548+4548 STF2846AB distance=90' 21548+4548 STF2846AC distance=90' 21509+4542 KPP4249 distance=94' 21476+4832 TDT3155 distance=94' 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 21526+4714 LI 7 AB 40 4.7
Show 21526+4714 LI 7 AC 207 6.0
Show 21535+4716 COU2320 190 1.1 10
Show 21515+4706 HJ 1701 210 14.5 13
Show 21511+4711 A 774 14 0.6 16
Show 21547+4730 A 890 236 1.5 28
Show 21543+4652 DAM 298 188 3.8 28
Show 21552+4700 TDT3240 7 1.7 31
Show 21495+4716 HJ 1698 321 7.7 32
Show 21545+4650 ES 2714 24 2.7 32
Show 21555+4703 HJ 1705 82 7.4 32
Show 21549+4651 DAM 299 309 6.8 34
Show 21492+4702 COU2317 AB 111 0.3 36
Show 21492+4702 COU2317 AC 141 21.2 36
Show 21532+4619 SLN 43 205 26.1 56
Show 21514+4811 TDT3198 335 0.6 59
Show 21466+4713 HJ 1692 231 9.0 62
Show 21473+4644 SRW 11 AB 28 28.9 62
Show 21473+4644 SRW 11 AC 341 26.3 62
Show 21500+4615 KPP 870 24 7.3 64
Show 21477+4759 COU2316 AB 185 0.7 66
Show 21477+4759 GII 294 Aa,Ab 113 0.1 66
Show 21488+4810 KPP1210 256 9.4 68
Show 21531+4826 COU2319 AB 59 0.8 73
Show 21531+4826 GII 87 AC 31 6.2 73
Show 21531+4826 COU2319 AD 88 2.4 73
Show 21470+4759 A 773 201 3.3 73
Show 21589+4748 ES 1176 AB 141 33.2 73
Show 21589+4748 ES 1176 BC 270 6.8 73
Show 21580+4627 COU2236 194 0.3 73
Show 21556+4605 TDT3245 263 0.5 76
Show 21451+4733 CON 42 AB 120 0.7 78
Show 21451+4733 CON 42 AC 13 1.5 78
Show 21575+4816 ES 682 134 6.2 80
Show 21598+4746 TDS1151 216 0.9 81
Show 21586+4806 TDT3269 120 0.6 81
Show 22008+4717 WAK 7 CD 142 5.2 83
Show 22007+4722 COU2447 125 0.3 83
Show 22008+4717 WAK 6 AB 238 13.1 84
Show 21590+4807 COU2446 55 0.4 84
Show 21588+4619 UC 267 246 17.2 85
Show 21564+4829 TVB 14 128 13.3 85
Show 21539+4839 COU2321 255 0.7 87
Show 21441+4707 TDT3125 220 0.9 87
Show 21450+4633 NSN 748 255 10.0 88
Show 22002+4756 A 778 AB 220 0.3 89
Show 22002+4756 A 778 AB,C 222 7.1 89
Show 21548+4548 COU2137 Aa,Ab 227 0.2 90
Show 21548+4548 STF2846 AB 266 3.6 90
Show 21548+4548 STF2846 AC 155 33.2 90
Show 21509+4542 KPP4249 74 2.0 94

 
 
WDS 21526+4714 : COMPONENTS
 
 
  A B
B pa=29.9°
sep=4.12"
 
C pa=198.9°
sep=5.65"
pa=203.5°
sep=9.73"
 
 
21526+4714 A
 
 
Name V1578 Cyg Coord arcsec 2000 215234.09+471343.6 Mag 10.16 Spectral class B9.5Ve (blue-white)
PmRA -3.00 PmDE -2.0 HIP 107983 Tycho2 3608-00755-1
BD BD+46 3471
Tycho2
Tycho2 3608-00755-1 Pflag RAmdeg 328.14208247 DEmdeg 47.22877449
PmRA -1.9 PmDE -3.7 E RAmdeg 21 E DEmdeg 25
E pmRA 1.4 E pmDE 1.4 EpRAm 1987.33 EpDEm 1986.65
Num 5 Q RAmdeg 0.3 Q DEmdeg 1.1 Q pmRA 0.3
Q pmDE 1.1 BTmag 10.601 E BTmag 0.041 VTmag 10.248
E VTmag 0.041 Prox 884 TYC T HIP 107983
CCDM RAdeg 328.14208833 DEdeg 47.22878306 EpRA 1990 1.67
EpDE 1990 1.60 E RAdeg 23.9 E DEdeg 27.5 Posflg
Corr 0.3
Hipparcos
Catalog H HIP 107983 Proxy RAhms 21 52 34.10
DEdms +47 13 43.6 Vmag 10.14 VarFlag R Vmag G
RAdeg 328.142 DEdeg 47.2288 AstroRef Plx -0.83
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD BD BD+46 3471
CD CP Dm number +46 3471 VIred 0.5
SpType B9.5Ve R SpType Coord arcsec 2000 215234.10+471343.6
Hipparcos 2
HIP 107983 Sn 5 So 0 Nc 1
RArad 5.7271598437 DErad 0.8242978393 Plx -1 PmRA -2.96
PmDE -2.98 E RArad 0.95 E DErad 1.04 E Plx 1.33
E pmRA 1.27 E pmDE 1.25 Hpmag 10.2151 E Hpmag 0.0033
SHp 0.034 VA 0 BV 0.436 E BV 0.058
VI 0.5
 
 
21526+4714 B
 
 
Coord arcsec 2000 215234.29+471347.2 Mag 13.9 Calc delta mag 3.74 Calc coord yes
 
 
21526+4714 C
 
 
Coord arcsec 2000 215233.91+471338.2 Mag 14.4 Calc delta mag 4.24 Calc coord yes