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Doubles in session


Current system
20471+2525
BU 364
HD 198057


Nearby doubles
11' : 20462+2526
POU4974

13' : 20478+2519
BUP 218AB

17' : 20462+2513
POU4972

20' : 20483+2515
POU5004

21' : 20465+2506
POU4980AB

22' : 20455+2522
POU4957

23' : 20482+2508
POU5003

24' : 20474+2502
POU4992

25' : 20485+2540
TDT2553

25' : 20487+2517
POU5015

25' : 20480+2504
POU5001

26' : 20464+2501
POU4976

26' : 20455+2509
POU4959

28' : 20475+2458
POU4991

29' : 20487+2507
BKO 862

31' : 20490+2540
HDS2966

31' : 20485+2501
POU5008

32' : 20500+2508
BKO 874

32' : 20450+2510
POU4951

32' : 20491+2509
BKO 865

33' : 20492+2510
POU5021

33' : 20459+2456
POU4964

33' : 20490+2544
J 3111

34' : 20490+2504
BKO 864

35' : 20460+2453
POU4968

35' : 20492+2504
POU5020



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

20471+2525 BU 364 (HD 198057)

 
 
20h 47m 03.56s +25° 24' 49.3" P.A. 75.00 sep 0.7 mag 9.00,9.12 Sp G5
 
 
Coord 2000 20471+2525 Discov num BU  364 Comp Coord arcsec 2000 20 47 03.56 +25 24 49.3
Date first 1874 Date last 2016 Obs 76
Pa first 38 Pa last 75.3 P.A. Now (θ) 75.3°
Sep first 1.0 Sep last 0.731 Sep. Now (ρ) 0.731"
Mag pri 9.00 Mag sec 9.12 delta mag (ΔM) 0.12 Spectral class G5 (yellow)
Pri motion ra -025 Sec motion ra -025
Pri motion dec -049 Sec motion dec -049
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198057 Constellation Vulpecula Tycho2 2174-01913-1 Gaia DR2 1843762497341672320
HD 198057 ADS 14286
 
 
ORBITAL ELEMENTS
 
 
Period (P)856.1062y± 410.4471 Periastron (T)2067.136y± 41.9511 Semi-major axis (a)1.29945a± 0.51201
Eccentricity (e)0.65375± 0.28364 Inclination (i)59.674°± 13.165 Longitude of periastron (ω)108.976°± 43.173
Node (Ω)64.075°± 21.034 Notes ReferenceIzm2019
Equinox Last observation2013 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 66.4 0.885
2001 66.8 0.877
2002 67.1 0.868
2003 67.5 0.859
2004 67.9 0.850
2005 68.3 0.841
2006 68.6 0.831
2007 69.0 0.822
2008 69.4 0.813
2009 69.9 0.803
2010 70.3 0.793
2011 70.7 0.783
2012 71.2 0.773
2013 71.6 0.763
2014 72.1 0.753
2015 72.6 0.742
2016 73.1 0.731
2017 73.6 0.721
2018 74.1 0.710
2019 74.7 0.699
2020 75.3 0.688
2021 75.8 0.676
2022 76.4 0.665
2023 77.1 0.653
2024 77.7 0.641
2025 78.4 0.629
2026 79.1 0.617
2027 79.8 0.605
2028 80.6 0.593
2029 81.4 0.580
2030 82.2 0.568
2031 83.0 0.555
2032 83.9 0.542
2033 84.9 0.529
2034 85.9 0.516
2035 86.9 0.503
2036 88.0 0.490
2037 89.2 0.476
2038 90.4 0.463
2039 91.7 0.449
2040 93.1 0.436
2041 94.6 0.422
2042 96.2 0.409
2043 97.8 0.395
2044 99.6 0.382
2045 101.6 0.368
2046 103.6 0.355
2047 105.9 0.342
2048 108.3 0.330
2049 110.9 0.317
2050 113.7 0.305


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds20471%2B2525a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 20471+2525 BU 364 (HD 198057) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019
Izm2019
 
 
DISCOVERER
 
 
discov author
BU Burnham, S.W. (BU 1 - 81)
IZM Izmailov, I.S., Khovricheva, M.L., Khovrichev, M. Yu., Kiyaeva, O.V., Khrutskaya,
IZM E.V., Romanenko, L.G., Grosheva, E.A., Maslennikov, K.L. & Kalinichenko, O.A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
20471+2525 BU 364 2005 77 69 0.8 9.00 9.12 G5 +24 4241 204703.56+252449.3
20471+2525 BU 364 2006 80 68 0.8 9.00 9.12 G5 +24 4241 204703.56+252449.3
20471+2525 BU 364 2010 82 70 0.8 9.00 9.12 G5 +24 4241 204703.56+252449.3
20471+2525 BU 364 2013 74 68 0.8 9.00 9.12 G5 +24 4241 204703.56+252449.3
20471+2525 BU 364 2016 75 75 0.7 9.00 9.12 G5 +24 4241 O 204703.56+252449.3

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

 
 
WDS 20471+2525 BU 364 (HD 198057) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20471+2525 BU 364 (HD 198057) : MEASURES
 
 
No records found.

 
 
WDS 20471+2525 (HD 198057) : VIRTUAL EYEPIECE
 
 

20471+2525 BU 364A mag 9 Sp G5 20471+2525 BU 364B sep 0.7 P.A. 75.30 mag 9.12 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 20471+2525 (HD 198057) : ALADIN DSS IMAGE @ 20h 47m 03.56s +25° 24' 49.3"
 
 
 
 
WDS 20471+2525 BU 364 (HD 198057) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20471+2525 BU 364 distance=0' 20478+2519 POU4996DH distance=11' 20462+2526 POU4974 distance=11' 20478+2519 BUP 218AB distance=13' 20478+2519 BUP 218AC distance=13' 20478+2519 BUP 218AD distance=13' 20478+2519 DAM 514AF distance=13' 20478+2519 WSI 49BE distance=13' 20478+2519 BKO 856FG distance=13' 20462+2513 POU4972 distance=17' 20483+2515 POU5004 distance=20' 20465+2506 POU4980AB distance=21' 20465+2506 POU4979AC distance=21' 20455+2522 POU4957 distance=22' 20482+2508 POU5003 distance=23' 20474+2502 POU4992 distance=24' 20485+2540 TDT2553 distance=25' 20487+2517 POU5015 distance=25' 20480+2504 POU5001 distance=25' 20464+2501 POU4976 distance=26' 20455+2509 POU4959 distance=26' 20475+2458 POU4991 distance=28' 20487+2507 BKO 862 distance=29' 20490+2540 HDS2966 distance=31' 20485+2501 POU5008 distance=31' 20500+2508 BKO 874 distance=32' 20450+2510 POU4951 distance=32' 20491+2509 BKO 865 distance=32' 20492+2510 POU5021 distance=33' 20459+2456 POU4964 distance=33' 20490+2544 J 3111 distance=33' 20490+2504 BKO 864 distance=34' 20460+2453 POU4968 distance=35' 20492+2504 POU5020 distance=35' 20495+2516 POU5025 distance=35' 20497+2526 POU5028 distance=37' 20445+2514 POU4937 distance=37' 20456+2553 J 1074 distance=37' 20497+2535 J 3112 distance=39' 20448+2500 BRT3361 distance=40' 20455+2450 POU4960 distance=40' 20499+2510 POU5029 distance=41' 20497+2507 BKO 868 distance=41' 20440+2525 POU4932 distance=41' 20499+2508 POU5030 distance=42' 20488+2449 POU5010 distance=43' 20443+2504 POU4934 distance=43' 20501+2512 POU5038 distance=44' 20440+2510 POU4931 distance=45' 20439+2510 POU4930 distance=45' 20499+2547 GRV 386 distance=45' 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 20471+2525 BU 364 75 0.7 0
Show 20478+2519 POU4996 DH 128 11.9 11
Show 20462+2526 POU4974 107 17.3 11
Show 20478+2519 BUP 218 AB 37 49.7 13
Show 20478+2519 BUP 218 AC 99 102.9 13
Show 20478+2519 BUP 218 AD 253 153.8 13
Show 20478+2519 DAM 514 AF 99 44.2 13
Show 20478+2519 WSI 49 BE 141 5.3 13
Show 20478+2519 BKO 856 FG 179 9.1 13
Show 20462+2513 POU4972 280 13.8 17
Show 20483+2515 POU5004 321 14.9 20
Show 20465+2506 POU4980 AB 145 7.4 21
Show 20465+2506 POU4979 AC 106 13.0 21
Show 20455+2522 POU4957 293 20.0 22
Show 20482+2508 POU5003 208 14.6 23
Show 20474+2502 POU4992 336 17.8 24
Show 20485+2540 TDT2553 347 0.6 25
Show 20487+2517 POU5015 78 14.6 25
Show 20480+2504 POU5001 198 7.8 25
Show 20464+2501 POU4976 224 17.0 26
Show 20455+2509 POU4959 139 14.0 26
Show 20475+2458 POU4991 293 17.3 28
Show 20487+2507 BKO 862 58 7.9 29
Show 20490+2540 HDS2966 229 0.5 31
Show 20485+2501 POU5008 312 7.8 31
Show 20500+2508 BKO 874 254 12.5 32
Show 20450+2510 POU4951 52 5.2 32
Show 20491+2509 BKO 865 101 9.0 32
Show 20492+2510 POU5021 354 5.7 33
Show 20459+2456 POU4964 154 13.9 33
Show 20490+2544 J 3111 138 6.3 33
Show 20490+2504 BKO 864 315 9.2 34
Show 20460+2453 POU4968 27 9.0 35
Show 20492+2504 POU5020 66 4.3 35
Show 20495+2516 POU5025 80 8.6 35
Show 20497+2526 POU5028 336 14.8 37
Show 20445+2514 POU4937 276 6.5 37
Show 20456+2553 J 1074 298 2.4 37
Show 20497+2535 J 3112 75 5.8 39
Show 20448+2500 BRT3361 140 4.9 40
Show 20455+2450 POU4960 143 6.2 40
Show 20499+2510 POU5029 20 12.3 41
Show 20497+2507 BKO 868 276 9.7 41
Show 20440+2525 POU4932 14 9.0 41
Show 20499+2508 POU5030 343 4.5 42
Show 20488+2449 POU5010 222 3.3 43
Show 20443+2504 POU4934 332 4.9 43
Show 20501+2512 POU5038 342 16.2 44
Show 20440+2510 POU4931 300 12.2 45
Show 20439+2510 POU4930 163 8.6 45
Show 20499+2547 GRV 386 200 14.5 45

 
 
WDS 20471+2525 : COMPONENTS
 
 
  A
B pa=75.3°
sep=0.73"
 
 
20471+2525 A
 
 
Name HD 198057 Coord arcsec 2000 204703.56+252449.3 Mag 9 Spectral class G5 (yellow)
PmRA -25.00 PmDE -49.0
CCDM
Ccdm 20471+2525 RComp Comp A Note1
Note2 Discov num DRAs -2.42 DDEs -11.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.9 Sp G5 PmNote *
PmRA -22 PmDE -60 Dm number +24 4241 Cat1 BD
Name2 +25 2451 Cat2 AGK2/3 HD 198057 M HD
ADS BDS A14286 M ADS BDS N IDS IDS 20427N2503A
HIC
 
 
20471+2525 B
 
 
Coord arcsec 2000 204703.61+252449.5 Mag 9.12 PmRA -25.00 PmDE -49.0
Delta magnitude 0.12 Coordinate calculated yes
CCDM
Ccdm 20471+2525 RComp Comp B Note1
Note2 Discov num BU 364 DRAs DDEs
R dRAs Year 1959 Theta 235 Rho 1.1
Obs 27 Vmag 9.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14286 M ADS BDS N IDS IDS 20427N2503B
HIC