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Current system
20320+2548
STF 2695
HD 195692


Nearby doubles
29' : 20317+2520
POU4571

30' : 20335+2527
TDT2371

32' : 20322+2517
POU4585

32' : 20332+2616
RAO 438

36' : 20298+2556
J 1882

36' : 20311+2514
POU4554

37' : 20317+2512
BKO 452

37' : 20324+2512
POU4591

37' : 20333+2516
POU4637

38' : 20305+2517
POU4541

38' : 20328+2512
POU4607

38' : 20298+2610
HJ 1520

38' : 20318+2511
BKO 453

39' : 20317+2510
POU4572

39' : 20298+2613
BKO 585

41' : 20344+2525
POU4666

41' : 20325+2508
POU4595

42' : 20343+2522
POU4664

42' : 20332+2510
POU4629

43' : 20310+2629
STF2692AB

44' : 20326+2506
BKO 455

44' : 20331+2506
POU4623AB

45' : 20327+2505
POU4603

45' : 20333+2507
POU4634

46' : 20339+2512
POU4652

46' : 20299+2624
S 750



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

20320+2548 STF 2695 (HD 195692)

 
 
20h 31m 58.19s +25° 48' 18.1" P.A. 257.00 sep 0.3 mag 6.58,8.75 Sp Am+A2 dist. 87.03 pc (283.89 l.y.)
 
 
Coord 2000 20320+2548 Discov num STF2695 Comp Coord arcsec 2000 20 31 58.19 +25 48 18.1
Date first 1830 Date last 2020 Obs 144
Pa first 79 Pa last 257.2 P.A. Now (θ) 259.4°
Sep first 0.8 Sep last 0.32 Sep. Now (ρ) 0.429"
Mag pri 6.58 Mag sec 8.75 delta mag (ΔM) 2.17 Spectral class Am+A2 (white/white)
Pri motion ra +035 Sec motion ra
Pri motion dec -016 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 195692 Constellation Vulpecula SAO 88808 HIP 101300
Tycho2 2161-00330-1 Gaia DR2 1831837091159294208 HD 195692 HR 7849
GC 28571 ADS 13964 BD BD+25 4272 Distance 87.03
Distance ly 283.89
 
 
ORBITAL ELEMENTS
 
 
Period (P)269y Periastron (T)2016.37y Semi-major axis (a)0.773a
Eccentricity (e)0.431 Inclination (i)84.1° Longitude of periastron (ω)174.1°
Node (Ω)77.4° Notesn ReferenceAlz2005a
Equinox2000 Last observation2004 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 246.8 0.247
2001 247.9 0.265
2002 248.9 0.282
2003 249.8 0.298
2004 250.6 0.314
2005 251.3 0.330
2006 251.9 0.344
2007 252.5 0.358
2008 253.1 0.371
2009 253.6 0.383
2010 254.1 0.394
2011 254.6 0.404
2012 255.0 0.413
2013 255.4 0.421
2014 255.9 0.427
2015 256.3 0.432
2016 256.6 0.436
2017 257.0 0.439
2018 257.4 0.441
2019 257.8 0.441
2020 258.2 0.440
2021 258.6 0.437
2022 259.0 0.434
2023 259.4 0.429
2024 259.8 0.423
2025 260.2 0.416
2026 260.6 0.408
2027 261.1 0.399
2028 261.6 0.389
2029 262.1 0.378
2030 262.6 0.366


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds20320%2B2548a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20320+2548 STF 2695 (HD 195692) : NOTES
 
 
discov_num notes refcode
STF2695 Absolute quadrant determined in 1998.657 and 1998.660 by
triple-correlation techniques. Pru2002b
Malkov et al. (2012) derive dynamical and photometric masses of
4.21 +/- 1.25 and 3.12 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Alz2005a orb - Alzner, A. 2005IAUDS.155....1A
Alz2005a Inf. Circ. 155, 1, 2005
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Pru2002b S j Prieur, J.-L., Koechlin, L., Ginestet, N., Carquillat, J.-M., Aristidi, E., 2002ApJS..142...95P
Pru2002b Scardia, M., Arnold, L., Avila, R., et al.
Pru2002b ApJS 142, 95, 2002
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20320+2548 STF2695 2004 135 248 0.3 6.58 8.75 Am+A2 NOD 203158.19+254818.1
20320+2548 STF2695 2016 141 259 0.4 6.58 8.75 Am+A2 NO 203158.19+254818.1
20320+2548 STF2695 2020 143 257 0.3 6.58 8.75 Am+A2 NO 203158.19+254818.1

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

 
 
WDS 20320+2548 STF 2695 (HD 195692) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20320+2548 STF 2695 (HD 195692) : MEASURES
 
 
No records found.

 
 
WDS 20320+2548 (HD 195692) : VIRTUAL EYEPIECE
 
 

20320+2548 STF2695A mag 6.58 Sp Am 20320+2548 STF2695B sep 0.3 P.A. 255.80 mag 8.75 Sp A2 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 20320+2548 (HD 195692) : ALADIN DSS IMAGE @ 20h 31m 58.19s +25° 48' 18.1"
 
 
 
 
WDS 20320+2548 STF 2695 (HD 195692) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20320+2548 STF2695 distance=0' 20317+2520 POU4571 distance=29' 20335+2527 TDT2371 distance=30' 20322+2517 POU4585 distance=32' 20332+2616 RAO 438 distance=32' 20298+2556 J 1882 distance=36' 20311+2514 POU4554 distance=36' 20317+2512 BKO 452 distance=37' 20324+2512 POU4591 distance=37' 20333+2516 POU4637 distance=37' 20305+2517 POU4541 distance=38' 20328+2512 POU4607 distance=38' 20298+2610 HJ 1520 distance=38' 20318+2511 BKO 453 distance=38' 20317+2510 POU4572 distance=39' 20298+2613 BKO 585 distance=39' 20344+2525 POU4666 distance=41' 20325+2508 POU4595 distance=41' 20343+2522 POU4664 distance=42' 20332+2510 POU4629 distance=42' 20310+2629 STF2692AB distance=43' 20310+2629 STF2692AC distance=43' 20310+2629 FYM 62AD distance=43' 20326+2506 BKO 455 distance=44' 20331+2506 POU4623AB distance=44' 20331+2506 BKO 456AC distance=44' 20327+2505 POU4603 distance=45' 20333+2507 POU4634 distance=45' 20339+2512 POU4652 distance=46' 20299+2624 S 750 distance=46' 20333+2506 POU4636 distance=46' 20340+2511 POU4656 distance=47' 20344+2516 POU4668AB distance=47' 20344+2516 POU4667AC distance=47' 20292+2521 TDT2318AB distance=47' 20292+2521 POU4525AC distance=47' 20301+2509 BKO 589 distance=47' 20331+2503 POU4624 distance=48' 20332+2502 POU4626 distance=49' 20302+2506 POU4536 distance=49' 20340+2508 POU4657 distance=49' 20313+2500 POU4557 distance=49' 20294+2514 POU4527 distance=50' 20333+2501 BKO 457 distance=51' 20328+2459 POU4608 distance=51' 20298+2507 BKO 586 distance=51' 20332+2500 POU4628 distance=52' 20349+2516 BKO 461 distance=52' 20348+2514 POU4678 distance=52' 20341+2505 POU4661AB distance=52' 20341+2505 POU4662AC 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 20320+2548 STF2695 257 0.3
Show 20317+2520 POU4571 15 4.8 29
Show 20335+2527 TDT2371 11 0.7 30
Show 20322+2517 POU4585 19 13.0 32
Show 20332+2616 RAO 438 288 0.7 32
Show 20298+2556 J 1882 115 10.1 36
Show 20311+2514 POU4554 72 5.9 36
Show 20317+2512 BKO 452 318 5.2 37
Show 20324+2512 POU4591 278 12.9 37
Show 20333+2516 POU4637 337 14.7 37
Show 20305+2517 POU4541 73 13.1 38
Show 20328+2512 POU4607 65 11.7 38
Show 20298+2610 HJ 1520 326 19.2 38
Show 20318+2511 BKO 453 3 5.4 38
Show 20317+2510 POU4572 350 12.9 39
Show 20298+2613 BKO 585 30 2.7 39
Show 20344+2525 POU4666 83 16.8 41
Show 20325+2508 POU4595 54 7.1 41
Show 20343+2522 POU4664 221 20.8 42
Show 20332+2510 POU4629 126 13.8 42
Show 20310+2629 STF2692 AB 163 10.1 43
Show 20310+2629 STF2692 AC 301 25.8 43
Show 20310+2629 FYM 62 AD 57 28.0 43
Show 20326+2506 BKO 455 320 1.9 44
Show 20331+2506 POU4623 AB 131 11.8 44
Show 20331+2506 BKO 456 AC 59 9.6 44
Show 20327+2505 POU4603 351 5.3 45
Show 20333+2507 POU4634 76 13.5 45
Show 20339+2512 POU4652 288 10.6 46
Show 20299+2624 S 750 320 68.3 46
Show 20333+2506 POU4636 350 9.7 46
Show 20340+2511 POU4656 129 12.2 47
Show 20344+2516 POU4668 AB 104 15.1 47
Show 20344+2516 POU4667 AC 76 17.3 47
Show 20292+2521 TDT2318 AB 20 2.6 47
Show 20292+2521 POU4525 AC 2 12.5 47
Show 20301+2509 BKO 589 84 5.2 47
Show 20331+2503 POU4624 88 14.8 48
Show 20332+2502 POU4626 329 17.3 49
Show 20302+2506 POU4536 110 6.4 49
Show 20340+2508 POU4657 38 5.7 49
Show 20313+2500 POU4557 312 11.5 49
Show 20294+2514 POU4527 208 13.8 50
Show 20333+2501 BKO 457 49 5.7 51
Show 20328+2459 POU4608 120 15.9 51
Show 20298+2507 BKO 586 287 4.6 51
Show 20332+2500 POU4628 348 11.2 52
Show 20349+2516 BKO 461 27 6.5 52
Show 20348+2514 POU4678 226 9.5 52
Show 20341+2505 POU4661 AB 254 16.2 52
Show 20341+2505 POU4662 AC 64 12.4 52

 
 
WDS 20320+2548 : COMPONENTS
 
 
  A
B pa=255.8°
sep=0.29"
 
 
20320+2548 A
 
 
Componente originario normalizzato AB Name HD 195692 Coord arcsec 2000 203158.19+254818.1 Mag 6.58
Spectral class Am (white) PmRA 35.00 PmDE -16.0 SAO 88808
HIP 101300 Tycho2 2161-00330-1 HD 195692 HR 7849
GC 28571 BD BD+25 4272
Tycho2
Tycho2 2161-00330-1 Pflag RAmdeg 307.99255512 DEmdeg 25.80498028
PmRA 40.1 PmDE -19.4 E RAmdeg 4 E DEmdeg 4
E pmRA 1.3 E pmDE 1.2 EpRAm 1991.47 EpDEm 1991.46
Num 12 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.1 BTmag 6.687 E BTmag 0.014 VTmag 6.396
E VTmag 0.010 Prox 999 TYC T HIP 101300
CCDM AS RAdeg 307.99245139 DEdeg 25.80502556 EpRA 1990 1.62
EpDE 1990 1.62 E RAdeg 3.6 E DEdeg 3.7 Posflg P
Corr 0.1
SAO
SAO 88808 DelFlag RA1950 PmRA1950 0.0023
DE1950 PmDE1950 -0.03 Vmag 6.3 SpType +++
Double code Source 70 CatNum 28571 DM BD+25 4272
DMcomp BDsup HD 195692 M HD 9
GC 28571 RA1950rad 5.36613904 DE1950rad 0.44740984 PmRA2000 0.0024
PmDE2000 -0.033
Hipparcos
Catalog H HIP 101300 Proxy H RAhms 20 31 58.19
DEdms +25 48 18.1 Vmag 6.37 VarFlag R Vmag H
RAdeg 307.992 DEdeg 25.805 AstroRef * Plx 12.33
CCDM 20320+2548 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual B M HIP AS
Theta 255 Rho 0.161 HD 195692 BD BD+25 4272
CD CP Dm number +25 4272 VIred 0.28
SpType Am R SpType Coord arcsec 2000 203158.19+254818.1
Hipparcos 2
HIP 101300 Sn 55 So 3 Nc 2
RArad 5.3754822709 DErad 0.4503826656 Plx 11.49 PmRA 40.6
PmDE -19.85 E RArad 0.32 E DErad 0.31 E Plx 0.49
E pmRA 0.38 E pmDE 0.38 Hpmag 6.4402 E Hpmag 0.0008
SHp 0.007 VA 0 BV 0.281 E BV 0.006
VI 0.32
CCDM
Ccdm 20320+2548 RComp Comp A Note1
Note2 Discov num DRAs -1.88 DDEs 18.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.5 Sp A2 PmNote *
PmRA 24 PmDE -14 Dm number +25 4272 Cat1 BD
Name2 +25 2380 Cat2 AGK2/3 HD 195692 M HD
ADS BDS A13964 M ADS BDS N IDS IDS 20277N2528A
HIC 101300
 
 
20320+2548 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203158.17+254818.0 Mag 8.75 Spectral class A2 (white)
Calc delta mag 2.17 Calc coord yes
CCDM
Ccdm 20320+2548 RComp Comp B Note1
Note2 Discov num STF2695 DRAs DDEs
R dRAs Year 1959 Theta 087 Rho 0.6
Obs 39 Vmag 8.3 Sp G PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD 195693 M HD
ADS BDS A13964 M ADS BDS N N IDS IDS 20277N2528B
HIC 101300