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Doubles in session


Current system
20175+2521
POU 4342
HD 339940


Nearby doubles
11' : 20171+2512
POU4338

12' : 20177+2510
POU4344

16' : 20184+2511
POU4352

17' : 20173+2505
POU4341

21' : 20184+2501
POU4350

22' : 20176+2500
POU4343

22' : 20166+2503
POU4329

22' : 20183+2539
BU 985AB

23' : 20162+2506
POU4323

25' : 20188+2504
POU4355

25' : 20193+2521
POU4363

25' : 20160+2505
BKO 820

28' : 20193+2509
POU4364

30' : 20157+2503
POU4318

30' : 20196+2522
POU4372

32' : 20180+2450
BKO 821

33' : 20188+2454
POU4357

33' : 20153+2536
BU 983AB

34' : 20180+2553
TDT2151

35' : 20183+2449
POU4349

36' : 20194+2457
GRV 330

39' : 20195+2454
POU4369

40' : 20195+2453
POU4368

43' : 20173+2604
BRT3357

43' : 20203+2501
J 1195

44' : 20194+2446
POU4366



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

20175+2521 POU 4342 (HD 339940)

 
 
20h 17m 25.34s +25° 20' 30.6" P.A. 191.00 sep 10.9 mag 11.20,12.30
 
 
Coord 2000 20175+2521 Discov num POU4342 Comp Coord arcsec 2000 20 17 25.34 +25 20 30.6
Date first 1898 Date last 2015 Obs 10
Pa first 194 Pa last 190.5 P.A. Now (θ) 190.5°
Sep first 11.3 Sep last 10.889 Sep. Now (ρ) 10.889"
Mag pri 11.20 Mag sec 12.30 delta mag (ΔM) 1.1 Spectral class
Pri motion ra -004 Sec motion ra -001
Pri motion dec -004 Sec motion dec -002
Notes
rPM=0.637
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 339940 Constellation Vulpecula Tycho2 2159-01442-1 Gaia DR2 1835265162259736576
HD 339940
 
 
WDS 20175+2521 POU 4342 (HD 339940) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Pou1933 Pa - Pourteau, M. A. .
Pou1933 Cat. des etoiles doubles de la zone +24deg de la carte photog. du ciel, 1933
Pou1933 (Obs. de Paris, H. Tessier) [QB821.P7]
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20175+2521 POU4342 1998 3 191 10.9 11.20 12.30 D 201725.34+252030.6
20175+2521 POU4342 2002 4 191 10.9 11.20 12.30 D 201725.34+252030.6
20175+2521 POU4342 2010 5 190 10.5 11.20 12.30 201725.34+252030.6
20175+2521 POU4342 2015 6 191 10.9 11.20 12.30 201725.34+252030.6

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

 
 
WDS 20175+2521 POU 4342 (HD 339940) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20175+2521 POU 4342 (HD 339940) : MEASURES
 
 
No records found.

 
 
WDS 20175+2521 (HD 339940) : VIRTUAL EYEPIECE
 
 

20175+2521 POU4342A mag 11.2 20175+2521 POU4342B sep 10.9 P.A. 189.50 mag 12.3 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 20175+2521 (HD 339940) : ALADIN DSS IMAGE @ 20h 17m 25.34s +25° 20' 30.6"
 
 
 
 
WDS 20175+2521 POU 4342 (HD 339940) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20175+2521 POU4342 distance=0' 20171+2512 POU4338 distance=11' 20177+2510 POU4344 distance=12' 20184+2511 POU4352 distance=16' 20173+2505 POU4341 distance=17' 20184+2501 POU4350 distance=21' 20176+2500 POU4343 distance=22' 20166+2503 POU4329 distance=22' 20183+2539 BU 985AB distance=22' 20183+2539 HJ 1499AC distance=22' 20183+2539 WAL 131AE distance=22' 20183+2539 BU 985CD distance=23' 20162+2506 POU4323 distance=23' 20188+2504 POU4355 distance=25' 20193+2521 POU4363 distance=25' 20160+2505 BKO 820 distance=25' 20193+2509 POU4364 distance=28' 20157+2503 POU4318 distance=30' 20196+2522 POU4372 distance=30' 20180+2450 BKO 821 distance=32' 20188+2454 POU4357 distance=33' 20153+2536 BU 983AB distance=33' 20153+2536 BU 983AC distance=33' 20180+2553 TDT2151 distance=34' 20183+2449 POU4349 distance=35' 20194+2457 GRV 330 distance=36' 20195+2454 POU4369 distance=39' 20195+2453 POU4368 distance=40' 20173+2604 BRT3357 distance=43' 20203+2501 J 1195 distance=43' 20194+2446 POU4366 distance=44' 20146+2459 POU4304 distance=45' 20202+2458 POU4378 distance=45' 20158+2441 POU4320 distance=45' 20193+2443 POU4361 distance=46' 20197+2447 BKO 825 distance=46' 20149+2451 BKO 816 distance=46' 20162+2437 POU4324 distance=46' 20192+2441 A 391AB distance=46' 20192+2441 BKO 824AC distance=46' 20207+2502 POU4387 distance=48' 20184+2435 POU4351AB distance=48' 20184+2435 BKO 638BC distance=48' 20146+2453 J 1165 distance=48' 20166+2433 POU4330 distance=49' 20158+2437 BKO 819 distance=49' 20155+2439 POU4317 distance=49' 20196+2442 POU4373 distance=50' 20145+2451 STT 402 distance=50' 20155+2437 POU4315 distance=52' 20213+2514 POU4393 distance=52' 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 20175+2521 POU4342 191 10.9
Show 20171+2512 POU4338 286 5.6 11
Show 20177+2510 POU4344 228 7.3 12
Show 20184+2511 POU4352 281 14.0 16
Show 20173+2505 POU4341 37 10.9 17
Show 20184+2501 POU4350 115 6.0 21
Show 20176+2500 POU4343 25 13.4 22
Show 20166+2503 POU4329 50 8.2 22
Show 20183+2539 BU 985 AB 153 5.9 22
Show 20183+2539 HJ 1499 AC 355 21.5 22
Show 20183+2539 WAL 131 AE 151 122.8 22
Show 20183+2539 BU 985 CD 67 8.6 23
Show 20162+2506 POU4323 22 5.1 23
Show 20188+2504 POU4355 177 10.7 25
Show 20193+2521 POU4363 44 24.1 25
Show 20160+2505 BKO 820 7 4.2 25
Show 20193+2509 POU4364 165 16.3 28
Show 20157+2503 POU4318 213 14.3 30
Show 20196+2522 POU4372 243 10.9 30
Show 20180+2450 BKO 821 229 5.2 32
Show 20188+2454 POU4357 65 13.9 33
Show 20153+2536 BU 983 AB 190 0.4 33
Show 20153+2536 BU 983 AC 83 115.7 33
Show 20180+2553 TDT2151 215 2.5 34
Show 20183+2449 POU4349 14 10.2 35
Show 20194+2457 GRV 330 148 47.2 36
Show 20195+2454 POU4369 39 20.3 39
Show 20195+2453 POU4368 184 10.8 40
Show 20173+2604 BRT3357 274 3.8 43
Show 20203+2501 J 1195 104 4.5 43
Show 20194+2446 POU4366 258 13.2 44
Show 20146+2459 POU4304 325 17.8 45
Show 20202+2458 POU4378 317 6.5 45
Show 20158+2441 POU4320 52 19.2 45
Show 20193+2443 POU4361 234 21.6 46
Show 20197+2447 BKO 825 249 4.7 46
Show 20149+2451 BKO 816 265 5.9 46
Show 20162+2437 POU4324 189 17.8 46
Show 20192+2441 A 391 AB 278 0.9 46
Show 20192+2441 BKO 824 AC 264 8.4 46
Show 20207+2502 POU4387 282 12.6 48
Show 20184+2435 POU4351 AB 88 6.8 48
Show 20184+2435 BKO 638 BC 21 6.2 48
Show 20146+2453 J 1165 122 2.2 48
Show 20166+2433 POU4330 307 14.3 49
Show 20158+2437 BKO 819 96 8.2 49
Show 20155+2439 POU4317 96 4.6 49
Show 20196+2442 POU4373 220 8.6 50
Show 20145+2451 STT 402 33 15.3 50
Show 20155+2437 POU4315 95 4.4 52
Show 20213+2514 POU4393 243 12.9 52

 
 
WDS 20175+2521 : COMPONENTS
 
 
  A
B pa=189.5°
sep=10.86"
 
 
20175+2521 A
 
 
Componente originario normalizzato AB Name HD 339940 Coord arcsec 2000 201725.34+252030.6 Mag 11.2
PmRA -4.00 PmDE -4.0 Tycho2 2159-01442-1 HD 339940
Tycho2
Tycho2 2159-01442-1 Pflag RAmdeg 304.35560331 DEmdeg 25.34183736
PmRA -4.9 PmDE -2.6 E RAmdeg 48 E DEmdeg 51
E pmRA 1.6 E pmDE 1.6 EpRAm 1980.26 EpDEm 1978.90
Num 5 Q RAmdeg 0.5 Q DEmdeg 2.7 Q pmRA 0.4
Q pmDE 2.8 BTmag 11.531 E BTmag 0.082 VTmag 11.196
E VTmag 0.096 Prox 999 TYC HIP
CCDM RAdeg 304.35561611 DEdeg 25.34186750 EpRA 1990 1.60
EpDE 1990 1.67 E RAdeg 54.0 E DEdeg 57.7 Posflg
Corr 0.1
 
 
20175+2521 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 201725.21+252019.9 Mag 12.3 PmRA -1.00
PmDE -2.0 Calc delta mag 1.1 Calc coord yes