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Current system
20490+2504
BKO 864


Nearby doubles
3' : 20492+2504
POU5020

5' : 20500+2508
BKO 874

6' : 20487+2507
BKO 862

6' : 20491+2509
BKO 865

8' : 20492+2510
POU5021

8' : 20485+2501
POU5008

11' : 20497+2507
BKO 868

12' : 20482+2508
POU5003

13' : 20480+2504
POU5001

13' : 20499+2508
POU5030

13' : 20499+2510
POU5029

14' : 20487+2517
POU5015

15' : 20499+2456
BKO 870

15' : 20483+2515
POU5004

15' : 20488+2449
POU5010

16' : 20495+2516
POU5025

16' : 20499+2454
POU5035

18' : 20501+2512
POU5038

19' : 20488+2446
POU5013

19' : 20503+2507
POU5039

20' : 20486+2444
BKO 860

21' : 20474+2502
POU4992

21' : 20485+2444
POU5007

21' : 20496+2444
POU5027

22' : 20491+2442
BKO 866

22' : 20478+2519
BUP 218AB



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

20490+2504 BKO 864

 
 
20h 48m 59.64s +25° 03' 40.4" P.A. 313.00 sep 9.1 mag 12.00,15.00
 
 
Coord 2000 20490+2504 Discov num BKO 864 Comp Coord arcsec 2000 20 48 59.64 +25 03 40.4
Date first 1999 Date last 2014 Obs 7
Pa first 311 Pa last 313.1 P.A. Now (θ) 313.1°
Sep first 9.1 Sep last 9.053 Sep. Now (ρ) 9.053"
Mag pri 12.00 Mag sec 15.00 delta mag (ΔM) 3 Spectral class
Pri motion ra +004 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Vulpecula Gaia DR2 1843689963933711744
 
 
WDS 20490+2504 BKO 864 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Bko2002 C - Ladanyi, T. & Berko, E. ...................
Bko2002 Webb Soc., Double Star Circ. 10, 2002
Bko2003 C u Ladanyi, T., Berko, E. & Vaskuti, G ...................
Bko2003 Webb Soc., Double Star Circ. 11, 2003
Bko2004 C u Berko, E., Ladanyi, T. & Vaskuti, G ...................
Bko2004 Webb Soc., Double Star Circ. 12, 2004
Bko2005 C u Berko, E., Ladanyi, T. & Vaskuti, G ...................
Bko2005 Webb Soc., Double Star Circ. 13, 2005
Bko2008 C u Berko, E. & Vaskuti, G. ...................
Bko2008 Webb Soc., Double Star Circ. 16, 2008
Bko2008b C u Berko, E. 2008JDSO....4..144B
Bko2008b JDSO 4, 144, 2008
Bko2009 C u Berko, E. 2009JDSO....5...49B
Bko2009 JDSO 5, 49, 2009
Bko2009b C u Berko, E. 2009JDSO....5..168B
Bko2009b JDSO 5, 168, 2009
Bko2009c C u Berko, E. ...................
Bko2009c Webb Soc., Double Star Circ. 17, 2009
Bko2009d C u Berko, E. 2009JDSO....5..189B
Bko2009d JDSO 5, 189, 2009
Bko2010a C u Berko, E. 2010JDSO....6...21B
Bko2010a JDSO 6, 21, 2010
Bko2010b C u Berko, E. ...................
Bko2010b Webb Soc., Double Star Circ. 18, 2010
Bko2011a C u Berko, E. 2011JDSO....7....2B
Bko2011a JDSO 7, 2, 2011
Bko2011b C u Berko, E. ...................
Bko2011b Webb Soc., Double Star Circ. 19, 29, 2011 (BKO 898 - BKO 980)
Bko2011c C u Berko, E. ...................
Bko2011c Webb Soc., Double Star Circ. 19, 42, 2011 (BKO 981 - BKO1042)
Bko2012 C u Berko, E. ...................
Bko2012 Webb Soc., Double Star Circ. 20, 2012
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20490+2504 BKO 864 2009 1 316 8.8 12.00 15.00 204859.64+250340.4
20490+2504 BKO 864 2014 7 313 9.1 12.00 15.00 204859.64+250340.4

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

 
 
WDS 20490+2504 BKO 864 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20490+2504 BKO 864 : MEASURES
 
 
No records found.

 
 
WDS 20490+2504 : VIRTUAL EYEPIECE
 
 

20490+2504 BKO 864A mag 12 20490+2504 BKO 864B sep 8.6 P.A. 315.90 mag 15 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 20490+2504 : ALADIN DSS IMAGE @ 20h 48m 59.64s +25° 03' 40.4"
 
 
 
 
WDS 20490+2504 BKO 864 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20490+2504 BKO 864 distance=0' 20492+2504 POU5020 distance=3' 20500+2508 BKO 874 distance=5' 20487+2507 BKO 862 distance=6' 20491+2509 BKO 865 distance=6' 20492+2510 POU5021 distance=8' 20485+2501 POU5008 distance=8' 20497+2507 BKO 868 distance=11' 20482+2508 POU5003 distance=12' 20480+2504 POU5001 distance=13' 20499+2508 POU5030 distance=13' 20499+2510 POU5029 distance=13' 20487+2517 POU5015 distance=14' 20499+2456 BKO 870 distance=15' 20483+2515 POU5004 distance=15' 20488+2449 POU5010 distance=15' 20495+2516 POU5025 distance=16' 20499+2454 POU5035 distance=16' 20501+2512 POU5038 distance=18' 20488+2446 POU5013 distance=19' 20503+2507 POU5039 distance=19' 20486+2444 BKO 860 distance=20' 20474+2502 POU4992 distance=21' 20485+2444 POU5007 distance=21' 20496+2444 POU5027 distance=21' 20478+2519 BKO 856FG distance=22' 20491+2442 BKO 866 distance=22' 20478+2519 BUP 218AB distance=22' 20478+2519 BUP 218AC distance=22' 20478+2519 BUP 218AD distance=22' 20478+2519 DAM 514AF distance=22' 20478+2519 WSI 49BE distance=22' 20475+2458 POU4991 distance=22' 20487+2442 BKO 863 distance=23' 20506+2512 POU5041 distance=23' 20478+2519 POU4996DH distance=24' 20493+2440 BKO 867 distance=24' 20503+2518 POU5040 distance=24' 20490+2439 POU5018 distance=25' 20497+2526 POU5028 distance=25' 20511+2457 POU5044 distance=30' 20507+2525 BKO 876 distance=32' 20513+2511 POU5045 distance=33' 20507+2527 POU5042 distance=34' 20497+2535 J 3112 distance=34' 20465+2506 POU4980AB distance=34' 20465+2506 POU4979AC distance=34' 20471+2525 BU 364 distance=34' 20464+2501 POU4976 distance=35' 20486+2428 POU5009AB distance=36' 20486+2428 BKO 861BC distance=37' 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 20490+2504 BKO 864 313 9.1
Show 20492+2504 POU5020 68 4.0 3
Show 20500+2508 BKO 874 254 12.5 5
Show 20487+2507 BKO 862 55 7.9 6
Show 20491+2509 BKO 865 101 8.9 6
Show 20492+2510 POU5021 355 6.0 8
Show 20485+2501 POU5008 312 7.8 8
Show 20497+2507 BKO 868 276 9.7 11
Show 20482+2508 POU5003 208 14.4 12
Show 20480+2504 POU5001 197 7.7 13
Show 20499+2508 POU5030 343 4.5 13
Show 20499+2510 POU5029 20 12.3 13
Show 20487+2517 POU5015 78 14.6 14
Show 20499+2456 BKO 870 235 8.3 15
Show 20483+2515 POU5004 324 15.0 15
Show 20488+2449 POU5010 222 3.3 15
Show 20495+2516 POU5025 80 8.6 16
Show 20499+2454 POU5035 54 9.8 16
Show 20501+2512 POU5038 342 16.2 18
Show 20488+2446 POU5013 354 14.7 19
Show 20503+2507 POU5039 84 10.8 19
Show 20486+2444 BKO 860 300 8.6 20
Show 20474+2502 POU4992 336 17.8 21
Show 20485+2444 POU5007 160 3.6 21
Show 20496+2444 POU5027 179 14.2 21
Show 20478+2519 BKO 856 FG 178 9.1 22
Show 20491+2442 BKO 866 114 2.3 22
Show 20478+2519 BUP 218 AB 37 49.4 22
Show 20478+2519 BUP 218 AC 99 102.9 22
Show 20478+2519 BUP 218 AD 252 154.0 22
Show 20478+2519 DAM 514 AF 100 44.2 22
Show 20478+2519 WSI 49 BE 141 5.1 22
Show 20475+2458 POU4991 293 17.3 22
Show 20487+2442 BKO 863 277 4.3 23
Show 20506+2512 POU5041 177 14.2 23
Show 20478+2519 POU4996 DH 127 12.0 24
Show 20493+2440 BKO 867 349 4.6 24
Show 20503+2518 POU5040 290 18.9 24
Show 20490+2439 POU5018 282 23.1 25
Show 20497+2526 POU5028 336 14.8 25
Show 20511+2457 POU5044 314 12.9 30
Show 20507+2525 BKO 876 65 8.2 32
Show 20513+2511 POU5045 314 13.7 33
Show 20507+2527 POU5042 344 7.4 34
Show 20497+2535 J 3112 75 5.8 34
Show 20465+2506 POU4980 AB 145 7.5 34
Show 20465+2506 POU4979 AC 105 13.1 34
Show 20471+2525 BU 364 75 0.7 34
Show 20464+2501 POU4976 224 17.0 35
Show 20486+2428 POU5009 AB 183 14.8 36
Show 20486+2428 BKO 861 BC 225 2.0 37

 
 
WDS 20490+2504 : COMPONENTS
 
 
  A
B pa=315.9°
sep=8.61"
 
 
20490+2504 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204859.64+250340.4 Mag 12 PmRA 4.00
PmDE -7.0
 
 
20490+2504 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204859.20+250346.6 Mag 15 Calc delta mag 3
Calc coord yes