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Doubles in session


Current system
20450+1244
BU 64 AB
HD 197683


Nearby doubles
18' : 20460+1235
KPP 477

19' : 20441+1258
J 1889

20' : 20440+1256
DAM 218

20' : 20439+1255
J 1888

22' : 20457+1302
WFC 258

23' : 20440+1225
HJ 1566AB

25' : 20449+1219
STF2723AB

29' : 20446+1312
TDS1098

33' : 20428+1244
BPM2234

34' : 20471+1257
BPM2265

36' : 20426+1244
STF2718AB

37' : 20442+1209
BPM2240

39' : 20426+1300
GWP2988

40' : 20444+1205
A 875

49' : 20418+1231
STF2715

50' : 20438+1330
BPM2238

50' : 20446+1154
BPM2251

50' : 20446+1333
YSC 242AB

55' : 20420+1212
BPM2231

56' : 20488+1248
GWP3000

56' : 20466+1334
GWP2996

56' : 20486+1223
BPM2273

61' : 20429+1152
BPM2235

61' : 20492+1243
GWP3001

63' : 20426+1335
HEI 279AB

65' : 20467+1343
BPM2262



Selections
Full WDS
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.

20450+1244 BU 64 AB (HD 197683)

 
 
20h 45m 00.23s +12° 43' 36.5" P.A. 174.00 sep 0.7 mag 9.14,8.56 Sp G dist. 106.5 pc (347.4 l.y.)
 
 
Coord 2000 20450+1244 Discov num BU   64 Comp AB Coord arcsec 2000 20 45 00.23 +12 43 36.5
Date first 1872 Date last 2016 Obs 165
Pa first 350 Pa last 174.1 P.A. Now (θ) 174.1°
Sep first 0.8 Sep last 0.68 Sep. Now (ρ) 0.68"
Mag pri 9.14 Mag sec 8.56 delta mag (ΔM) 0.58 Spectral class G (yellow)
Pri motion ra -011 Sec motion ra -011
Pri motion dec -004 Sec motion dec -004
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
20450+1244 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 197683 106446 20 45 00 +12 43 36 BU 64 AB 2016 165 174 0.7 9.14 8.56 0.58 Y <===
Show 106447 20 45 00 +12 43 36 STTA 209 AC 2016 35 155 97.2 9.14 8.17 0.97
Show 20 45 00 +12 43 36 BU 64 AD 2016 18 117 64.3 9.14 11.06 1.92
Show 106447 20 45 03 +12 42 08 D 32 CD 2016 12 15 60.8 8.17 11.06 2.89
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 197683 Constellation Delphinus SAO 106446 HIP 102398
Tycho2 1097-00941-1 Gaia DR2 1755189375364309504 HD 197683 ADS 14238
BD BD+12 4452 Distance 106.5 Distance ly 347.4
 
 
ORBITAL ELEMENTS
 
 
Period (P)2559.04y Periastron (T)1951.41y Semi-major axis (a)2.677a
Eccentricity (e)0.805 Inclination (i)75.1° Longitude of periastron (ω)138.6°
Node (Ω)159.3° Notesn ReferenceUSN2007a
Equinox2000 Last observation2001 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 350.0 0.660
2001 350.4 0.660
2002 350.7 0.660
2003 351.1 0.659
2004 351.4 0.659
2005 351.8 0.659
2006 352.1 0.658
2007 352.5 0.658
2008 352.8 0.657
2009 353.2 0.656
2010 353.5 0.655
2011 353.9 0.654
2012 354.3 0.653
2013 354.6 0.652
2014 355.0 0.651
2015 355.4 0.650
2016 355.7 0.649
2017 356.1 0.647
2018 356.5 0.646
2019 356.8 0.644
2020 357.2 0.643
2021 357.6 0.641
2022 357.9 0.639
2023 358.3 0.638
2024 358.7 0.636
2025 359.1 0.634
2026 359.5 0.633
2027 359.8 0.631
2028 0.2 0.629
2029 0.6 0.627
2030 1.0 0.625


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


 
  


wds20450%2B1244a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20450+1244 BU 64 AB (HD 197683) : NOTES
 
 
discov_num notes refcode
D 32 CD: Measures listed as new CE pair were all actually of DC.
 
 
REFERENCES
 
 
refcode metd author reference
USN2007a orb - Brendley, M. & Hartkopf, W.I. 2007IAUDS.163Q...1B
USN2007a Inf. Circ. 163, 1, 2007
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 D Dembowski, H.
350 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20450+1244 BU 64 AB 2005 158 351 0.6 9.14 8.56 G NOD 204500.25+124336.3
20450+1244 BU 64 AB 2006 160 351 0.7 9.14 8.56 G NOD 204500.25+124336.3
20450+1244 BU 64 AB 2007 161 352 0.7 9.14 8.56 G NOD 204500.23+124336.5
20450+1244 BU 64 AB 2009 162 353 0.7 9.14 8.56 G NOD 204500.23+124336.5
20450+1244 BU 64 AB 2012 164 352 0.6 9.14 8.56 G NOD 204500.23+124336.5
20450+1244 BU 64 AB 2016 162 354 0.7 9.14 8.56 G NO 204500.23+124336.5

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

 
 
WDS 20450+1244 BU 64 AB (HD 197683) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20450+1244 BU 64 AB (HD 197683) : MEASURES
 
 
No records found.

 
 
WDS 20450+1244 (HD 197683) : VIRTUAL EYEPIECE
 
 

20450+1244 BU 64A mag 9.14 Sp G 20450+1244 BU 64B sep 0.7 P.A. 174.20 mag 8.56 20450+1244 D 32C sep 97.2 P.A. 155.10 mag 8.17 Sp F 20450+1244 BU 64D sep 63.0 P.A. 117.60 mag 11.06 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 20450+1244 (HD 197683) : ALADIN DSS IMAGE @ 20h 45m 00.23s +12° 43' 36.5"
 
 
 
 
WDS 20450+1244 BU 64 AB (HD 197683) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20450+1244 BU 64AB distance=0' 20450+1244 D 32CD distance=2' 20460+1235 KPP 477 distance=18' 20441+1258 J 1889 distance=19' 20440+1256 DAM 218 distance=20' 20439+1255 J 1888 distance=20' 20457+1302 WFC 258 distance=22' 20440+1225 HJ 1566AB distance=23' 20440+1225 HJ 1566AC distance=23' 20449+1219 B 2910Aa,Ab distance=25' 20449+1219 STF2723AB distance=25' 20449+1219 BU 1492AC distance=25' 20446+1312 TDS1098 distance=29' 20428+1244 BPM2234 distance=33' 20471+1257 BPM2265 distance=34' 20426+1244 STF2718BC distance=36' 20426+1244 STF2718AB distance=36' 20426+1244 STF2718AC distance=36' 20442+1209 BPM2240 distance=37' 20426+1300 GWP2988 distance=39' 20444+1205 A 875 distance=40' 20418+1231 STF2715 distance=49' 20438+1330 BPM2238 distance=50' 20446+1154 BPM2251 distance=50' 20446+1333 YSC 242AB distance=50' 20420+1212 BPM2231 distance=55' 20488+1248 GWP3000 distance=56' 20466+1334 GWP2996 distance=56' 20486+1223 BPM2273 distance=56' 20429+1152 BPM2235 distance=61' 20492+1243 GWP3001 distance=61' 20426+1335 HEI 279BC distance=63' 20426+1335 HEI 279AB distance=63' 20467+1343 BPM2262 distance=65' 20405+1240 HEI 278 distance=66' 20496+1233 BU 1495AB distance=69' 20496+1233 BU 1495AC distance=69' 20496+1233 BU 1495AD distance=69' 20413+1327 BPM2228BC distance=70' 20419+1150 HEI 588 distance=70' 20410+1206 HEI 587 distance=70' 20413+1327 BPM2227AB distance=70' 20414+1157 TDT2472 distance=71' 20402+1248 BPM2223 distance=71' 20421+1341 BPM2232 distance=72' 20499+1255 HJ 1577 distance=73' 20502+1246 J 3277 distance=75' 20465+1131 BPM2258 distance=76' 20496+1322 TDT2565 distance=78' 20408+1332 GWP2982 distance=79' 20460+1126 TDT2526 distance=80' 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 20450+1244 BU 64 AB 174 0.7
Show 20450+1244 STTA209 AC 155 97.2
Show 20450+1244 BU 64 AD 117 64.3
Show 20450+1244 D 32 CD 15 60.8 2
Show 20460+1235 KPP 477 52 4.5 18
Show 20441+1258 J 1889 10 4.6 19
Show 20440+1256 DAM 218 342 5.7 20
Show 20439+1255 J 1888 158 10.0 20
Show 20457+1302 WFC 258 284 11.7 22
Show 20440+1225 HJ 1566 AB 16 16.9 23
Show 20440+1225 HJ 1566 AC 331 32.4 23
Show 20449+1219 B 2910 Aa,Ab 52 0.1 25
Show 20449+1219 STF2723 AB 140 1.0 25
Show 20449+1219 BU 1492 AC 30 37.0 25
Show 20446+1312 TDS1098 279 0.9 29
Show 20428+1244 BPM2234 331 93.5 33
Show 20471+1257 BPM2265 51 16.1 34
Show 20426+1244 STF2718 BC 346 167.3 36
Show 20426+1244 STF2718 AB 87 8.5 36
Show 20426+1244 STF2718 AC 346 167.2 36
Show 20442+1209 BPM2240 148 55.1 37
Show 20426+1300 GWP2988 23 19.1 39
Show 20444+1205 A 875 208 2.5 40
Show 20418+1231 STF2715 2 12.4 49
Show 20438+1330 BPM2238 50 66.9 50
Show 20446+1154 BPM2251 51 84.7 50
Show 20446+1333 YSC 242 AB 157 1.5 50
Show 20420+1212 BPM2231 330 108.9 55
Show 20488+1248 GWP3000 280 24.1 56
Show 20466+1334 GWP2996 157 54.2 56
Show 20486+1223 BPM2273 132 52.3 56
Show 20429+1152 BPM2235 142 114.9 61
Show 20492+1243 GWP3001 126 94.3 61
Show 20426+1335 HEI 279 BC 211 4.1 63
Show 20426+1335 HEI 279 AB 115 25.1 63
Show 20467+1343 BPM2262 331 74.6 65
Show 20405+1240 HEI 278 135 3.4 66
Show 20496+1233 BU 1495 AB 19 52.1 69
Show 20496+1233 BU 1495 AC 86 105.5 69
Show 20496+1233 BU 1495 AD 276 189.6 69
Show 20413+1327 BPM2228 BC 141 118.1 70
Show 20419+1150 HEI 588 293 2.3 70
Show 20410+1206 HEI 587 36 1.2 70
Show 20413+1327 BPM2227 AB 173 68.5 70
Show 20414+1157 TDT2472 309 0.5 71
Show 20402+1248 BPM2223 290 95.3 71
Show 20421+1341 BPM2232 346 68.4 72
Show 20499+1255 HJ 1577 245 9.4 73
Show 20502+1246 J 3277 326 4.1 75
Show 20465+1131 BPM2258 45 78.9 76
Show 20496+1322 TDT2565 136 1.4 78

 
 
WDS 20450+1244 : COMPONENTS
 
 
  A B C
B pa=174.2°
sep=0.68"
 
C pa=155.1°
sep=97.16"
pa=154.9°
sep=96.52"
 
D pa=117.6°
sep=63.02"
pa=117.1°
sep=62.65"
pa=14.2°
sep=60.77"
 
 
20450+1244 A
 
 
Name HD 197683 Coord arcsec 2000 204500.23+124336.5 Mag 9.14 Spectral class G (yellow)
PmRA -11.00 PmDE -4.0
 
 
20450+1244 B
 
 
Coord arcsec 2000 204500.23+124335.8 Mag 8.56 PmRA -11.00 PmDE -4.0
SAO 106446 HIP 102398 Tycho2 1097-00941-1 HD 197683
BD BD+12 4452 Calc delta mag 0.58 Calc coord yes
Tycho2
Tycho2 1097-00941-1 Pflag RAmdeg 311.25098508 DEmdeg 12.72682856
PmRA -11.0 PmDE -3.8 E RAmdeg 6 E DEmdeg 7
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.36 EpDEm 1990.81
Num 10 Q RAmdeg 1.0 Q DEmdeg 1.6 Q pmRA 1.0
Q pmDE 1.6 BTmag 8.740 E BTmag 0.018 VTmag 8.219
E VTmag 0.013 Prox 971 TYC T HIP 102398
CCDM AB RAdeg 311.25101083 DEdeg 12.72683750 EpRA 1990 1.75
EpDE 1990 1.57 E RAdeg 6.1 E DEdeg 7.3 Posflg P
Corr 0.0
SAO
SAO 106446 DelFlag RA1950 PmRA1950 -0.0008
DE1950 PmDE1950 0.006 Vmag 8.2 SpType G
Double code Source 29 CatNum 8113 DM BD+12 4452
DMcomp BDsup HD 197683 M HD 0
GC RA1950rad 5.42199671 DE1950rad 0.2189419 PmRA2000 -0.0007
PmDE2000 0.003
Hipparcos
Catalog H HIP 102398 Proxy H RAhms 20 45 00.25
DEdms +12 43 36.3 Vmag 8.06 VarFlag R Vmag H
RAdeg 311.251 DEdeg 12.7267 AstroRef B Plx 13.18
CCDM 20450+1243 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP BA
Theta 346 Rho 0.659 HD 197683 BD BD+12 4452
CD CP Dm number +12 4452 VIred 0.52
SpType F6V R SpType Coord arcsec 2000 204500.25+124336.3
Hipparcos 2
HIP 102398 Sn 15 So 3 Nc 2
RArad 5.4323554048 DErad 0.222123661 Plx 9.39 PmRA -7.79
PmDE -2.53 E RArad 1.94 E DErad 2.55 E Plx 3.26
E pmRA 2.37 E pmDE 3.27 Hpmag 8.1631 E Hpmag 0.0016
SHp 0.011 VA 0 BV 0.454 E BV 0.009
VI 0.52
 
 
20450+1244 C
 
 
Coord arcsec 2000 204503.03+124208.4 Coord calc 204503.03+124208.4 Mag 8.17 Spectral class F (yellow-white)
PmRA 28.00 PmDE 5.0 SAO 106447 HIP 102400
Tycho2 1097-01669-1 HD 197704 BD BD+12 4453 Calc delta mag 0.97
Tycho2
Tycho2 1097-01669-1 Pflag RAmdeg 311.26262733 DEmdeg 12.70234808
PmRA 28.7 PmDE 3.5 E RAmdeg 6 E DEmdeg 7
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.30 EpDEm 1990.83
Num 9 Q RAmdeg 1.3 Q DEmdeg 1.3 Q pmRA 1.2
Q pmDE 1.3 BTmag 8.576 E BTmag 0.018 VTmag 8.172
E VTmag 0.013 Prox 971 TYC T HIP 102400
CCDM RAdeg 311.26255944 DEdeg 12.70234028 EpRA 1990 1.78
EpDE 1990 1.55 E RAdeg 5.7 E DEdeg 7.1 Posflg
Corr 0.0
SAO
SAO 106447 DelFlag RA1950 PmRA1950 0.0011
DE1950 PmDE1950 0.009 Vmag 8.2 SpType F
Double code Source 29 CatNum 8114 DM BD+12 4453
DMcomp BDsup HD 197704 M HD 0
GC RA1950rad 5.42218818 DE1950rad 0.21851167 PmRA2000 0.0012
PmDE2000 0.006
Hipparcos
Catalog H HIP 102400 Proxy RAhms 20 45 03.01
DEdms +12 42 08.4 Vmag 8.12 VarFlag R Vmag G
RAdeg 311.263 DEdeg 12.7023 AstroRef Plx 7.27
CCDM 20450+1243 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 197704 BD BD+12 4453
CD CP Dm number +12 4453 VIred 0.45
SpType F R SpType Coord arcsec 2000 204503.01+124208.4
Hipparcos 2
HIP 102400 Sn 5 So 0 Nc 1
RArad 5.4325565029 DErad 0.2216976595 Plx 6.57 PmRA 27.62
PmDE 5.46 E RArad 0.55 E DErad 0.41 E Plx 0.69
E pmRA 0.73 E pmDE 0.45 Hpmag 8.2207 E Hpmag 0.0013
SHp 0.011 VA 0 BV 0.36 E BV 0.042
VI 0.45
 
 
20450+1244 D
 
 
Coord arcsec 2000 204504.05+124307.3 Mag 11.06 PmRA 9.00 PmDE 5.0
Calc delta mag 1.92 Calc coord yes