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Doubles in session


Current system
20213+0250
HLD 158
HD 193651


Nearby doubles
3' : 20212+0249
TOK 730

21' : 20199+0254
TDT2175

27' : 20200+0308
HJ 913

40' : 20188+0305
UC 4144

42' : 20221+0331
UC 4158

46' : 20214+0336
BAL2532AB

53' : 20225+0155
HJ 2955

53' : 20202+2000
KPP 879AB

54' : 20247+0302
J 1342

59' : 20228+0156
TDT2221

60' : 20251+0233
BAL2023

61' : 20251+0225
LDS4841

67' : 20257+0304
BAL2024

69' : 20169+0306
GWP2935

76' : 20162+0255
GWP2933

82' : 20198+0132
TDT2172

83' : 20195+0133
SKF 925

84' : 20203+0412
UC 4150

86' : 20167+0158
UC 250

87' : 20155+0251
HJ 910AB

89' : 20253+0355
UC 4175

93' : 20204+0119
UC 4151

93' : 20193+0418
GWP2938

94' : 20227+0119
BAL1555

94' : 20263+0156
BAL1557

94' : 20204+0118
J 555



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.

20213+0250 HLD 158 (HD 193651)

 
 
20h 21m 17.43s +02° 50' 21.9" P.A. 41.00 sep 1.2 mag 9.71,9.78 Sp G0 dist. 440.53 pc (1437.01 l.y.)
 
 
Coord 2000 20213+0250 Discov num HLD 158 Comp Coord arcsec 2000 20 21 17.43 +02 50 21.9
Date first 1882 Date last 2017 Obs 70
Pa first 40 Pa last 41.3 P.A. Now (θ) 40.1°
Sep first 2.0 Sep last 1.204 Sep. Now (ρ) 1.26"
Mag pri 9.71 Mag sec 9.78 delta mag (ΔM) 0.07 Spectral class G0 (yellow)
Pri motion ra +064 Sec motion ra +064
Pri motion dec -019 Sec motion dec -019
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 193651 Constellation Aquila SAO 125710 HIP 100355
Tycho2 0500-00340-1 Gaia DR2 4243405320259760128 HD 193651 ADS 13738
BD BD+02 4138 Distance 440.53 Distance ly 1437.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)232.4y Periastron (T)1961.16y Semi-major axis (a)0.858a
Eccentricity (e)0.746 Inclination (i)128.6° Longitude of periastron (ω)17.7°
Node (Ω)218.3° Notesn ReferenceMsn2017c
Equinox2000 Last observation2016 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 48.9 0.966
2001 48.4 0.982
2002 47.9 0.998
2003 47.4 1.014
2004 47.0 1.029
2005 46.5 1.044
2006 46.1 1.059
2007 45.7 1.073
2008 45.3 1.087
2009 44.9 1.100
2010 44.5 1.114
2011 44.1 1.127
2012 43.7 1.139
2013 43.4 1.152
2014 43.0 1.164
2015 42.7 1.176
2016 42.3 1.187
2017 42.0 1.198
2018 41.7 1.209
2019 41.4 1.220
2020 41.0 1.230
2021 40.7 1.240
2022 40.4 1.250
2023 40.1 1.260
2024 39.8 1.269
2025 39.5 1.278
2026 39.2 1.287
2027 39.0 1.296
2028 38.7 1.304
2029 38.4 1.312
2030 38.1 1.320


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


 
  


wds20213%2B0250a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20213+0250 HLD 158 (HD 193651) : NOTES
 
 
discov_num notes refcode
HLD 158 Misidentified in IDS as BD+02 4138 rather than +02 4139. Position and
proper motion corrected.
Pair called "too close" by van den Bos in 7 nights in 1961 and 1962. Wor1967b
Confirms comment by Couteau that BD+02 4138 7s s is single. Mrl1968a
Meas attributed to ADS 13738 = BD+02 4138 appear to match this pair. Mrl1970d
This is BD+02 4139, observed my Morel (1968). Coordinates are those
given by Aitken for ADS 13738 = HLD 158 = BD+02 4138 -7s, which was
found to be single. Probably ADS 13738 = BD+02 4139. Cou1970c
 
 
REFERENCES
 
 
refcode metd author reference
Cou1970c Ma j Couteau, P. 1970A&AS....3...51C
Cou1970c +Pa A&AS 3, 51, 1970
Mrl1968a Ma - Morel, P.J. 1968JO.....51..349M
Mrl1968a J. Obs. 51, 349, 1968
Mrl1970d Ma j Morel, P.J. 1970A&AS....3...71M
Mrl1970d A&AS 3, 71, 1970
Msn2017c orb - Mason, B.D. & Hartkopf, W.I. 2017IAUDS.192....1M
Msn2017c Inf. Circ. 192, 1, 2017
Wor1967b Ma j Worley, C.E. 1967PUSNO..18....1W
Wor1967b Pub. USNO 18, Pt. 6, 1967
 
 
DISCOVERER
 
 
idgroup discov author
1 HLD Holden, E.S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20213+0250 HLD 158 2001 61 48 1.0 9.71 9.78 G0 NO 202117.43+025021.9
20213+0250 HLD 158 2006 62 45 1.1 9.71 9.78 G0 NO 202117.43+025021.9
20213+0250 HLD 158 2007 63 44 1.1 9.71 9.78 G0 NO 202117.43+025021.9
20213+0250 HLD 158 2015 64 144 0.2 9.71 9.78 G0 NO 202117.43+025021.9
20213+0250 HLD 158 2016 65 42 1.2 9.71 9.78 G0 NO 202117.43+025021.9
20213+0250 HLD 158 2017 68 42 1.2 9.71 9.78 G0 NO 202117.43+025021.9

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

 
 
WDS 20213+0250 HLD 158 (HD 193651) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20213+0250 HLD 158 (HD 193651) : MEASURES
 
 
No records found.

 
 
WDS 20213+0250 (HD 193651) : VIRTUAL EYEPIECE
 
 

20213+0250 HLD 158A mag 9.71 Sp G0 20213+0250 HLD 158B sep 1.2 P.A. 41.30 mag 9.78 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 20213+0250 (HD 193651) : ALADIN DSS IMAGE @ 20h 21m 17.43s +02° 50' 21.9"
 
 
 
 
WDS 20213+0250 HLD 158 (HD 193651) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20213+0250 HLD 158 distance=0' 20212+0249 TOK 730 distance=3' 20199+0254 TDT2175 distance=21' 20200+0308 HJ 913 distance=27' 20188+0305 UC 4144 distance=40' 20221+0331 UC 4158 distance=42' 20214+0336 BAL2532AB distance=46' 20214+0336 BAL2532AC distance=46' 20225+0155 HJ 2955 distance=53' 20202+2000 KPP 879AB distance=53' 20247+0302 J 1342 distance=54' 20228+0156 TDT2221 distance=59' 20251+0233 BAL2023 distance=60' 20251+0225 LDS4841 distance=61' 20257+0304 BAL2024 distance=67' 20169+0306 GWP2935 distance=69' 20162+0255 GWP2933 distance=76' 20198+0132 TDT2172 distance=82' 20195+0133 SKF 925 distance=83' 20203+0412 UC 4150 distance=84' 20167+0158 UC 250 distance=86' 20155+0251 HJ 910AB distance=87' 20155+0251 HJ 910AC distance=87' 20253+0355 UC 4175 distance=89' 20204+0119 UC 4151 distance=93' 20193+0418 GWP2938 distance=93' 20227+0119 BAL1555 distance=94' 20263+0156 BAL1557 distance=94' 20204+0118 J 555 distance=94' 20187+0416 BAL2531 distance=95' 20274+0317 BAL2025 distance=96' 20267+0155 J 155BC distance=98' 20149+0315 BAL2021 distance=98' 20267+0155 J 155AB distance=98' 20151+0218 BAL1551 distance=99' 20253+0133 BAL1556 distance=99' 20146+0242 BAL2020 distance=100' 20174+0129 A 2279 distance=101' 20278+0311 HJ 917 distance=101' 20166+0405 J 1641 distance=104' 20266+0143 BAL1558 distance=105' 20152+0155 BAL1552 distance=108' 20183+0430 TDT2152AB distance=110' 20181+0105 KPP 721 distance=116' 20222-0054 UC 4160 distance=118' 20197-0056 BAL 610 distance=118' 20246+0104 STF2677AB distance=118' 20246+0104 STF2677AC distance=118' 20159+0419 TDT2129 distance=120' 20236-0055 RST5155 distance=121' 20283+0351 BAL2533 distance=121' 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 20213+0250 HLD 158 41 1.2
Show 20212+0249 TOK 730 146 0.2 3
Show 20199+0254 TDT2175 164 1.8 21
Show 20200+0308 HJ 913 144 9.6 27
Show 20188+0305 UC 4144 347 30.8 40
Show 20221+0331 UC 4158 218 20.6 42
Show 20214+0336 BAL2532 AB 271 5.3 46
Show 20214+0336 BAL2532 AC 22 7.3 46
Show 20225+0155 HJ 2955 246 14.1 53
Show 20202+2000 KPP 879 AB 332 7.4 53
Show 20247+0302 J 1342 333 2.4 54
Show 20228+0156 TDT2221 260 0.7 59
Show 20251+0233 BAL2023 330 7.4 60
Show 20251+0225 LDS4841 246 44.6 61
Show 20257+0304 BAL2024 70 16.1 67
Show 20169+0306 GWP2935 172 46.6 69
Show 20162+0255 GWP2933 48 1.3 76
Show 20198+0132 TDT2172 230 0.4 82
Show 20195+0133 SKF 925 87 39.9 83
Show 20203+0412 UC 4150 280 19.5 84
Show 20167+0158 UC 250 251 25.2 86
Show 20155+0251 HJ 910 AB 305 18.3 87
Show 20155+0251 HJ 910 AC 243 36.6 87
Show 20253+0355 UC 4175 87 20.7 89
Show 20204+0119 UC 4151 95 33.2 93
Show 20193+0418 GWP2938 333 50.7 93
Show 20227+0119 BAL1555 140 16.6 94
Show 20263+0156 BAL1557 211 6.4 94
Show 20204+0118 J 555 274 2.5 94
Show 20187+0416 BAL2531 56 16.1 95
Show 20274+0317 BAL2025 94 10.2 96
Show 20267+0155 J 155 BC 164 3.3 98
Show 20149+0315 BAL2021 344 4.5 98
Show 20267+0155 J 155 AB 348 53.1 98
Show 20151+0218 BAL1551 40 9.8 99
Show 20253+0133 BAL1556 22 6.6 99
Show 20146+0242 BAL2020 159 8.2 100
Show 20174+0129 A 2279 301 4.5 101
Show 20278+0311 HJ 917 37 12.8 101
Show 20166+0405 J 1641 215 7.4 104
Show 20266+0143 BAL1558 9 18.3 105
Show 20152+0155 BAL1552 243 4.9 108
Show 20183+0430 TDT2152 AB 50 0.5 110
Show 20181+0105 KPP 721 272 6.4 116
Show 20222-0054 UC 4160 4 58.8 118
Show 20197-0056 BAL 610 85 11.3 118
Show 20246+0104 STF2677 AB 30 31.2 118
Show 20246+0104 STF2677 AC 13 16.2 118
Show 20159+0419 TDT2129 262 2.3 120
Show 20236-0055 RST5155 191 1.1 121
Show 20283+0351 BAL2533 256 19.0 121

 
 
WDS 20213+0250 : COMPONENTS
 
 
  A
B pa=41.3°
sep=1.20"
 
 
20213+0250 A
 
 
Componente originario normalizzato AB Name HD 193651 Coord arcsec 2000 202117.43+025021.9 Mag 9.71
Spectral class G0 (yellow) PmRA 64.00 PmDE -19.0 SAO 125710
Tycho2 0500-00340-1 HD 193651 DM BD+02 4139
Tycho2
Tycho2 0500-00340-1 Pflag RAmdeg 305.32270395 DEmdeg 2.83946558
PmRA 64.3 PmDE -18.8 E RAmdeg 12 E DEmdeg 14
E pmRA 1.1 E pmDE 1.0 EpRAm 1989.08 EpDEm 1987.92
Num 9 Q RAmdeg 0.7 Q DEmdeg 1.0 Q pmRA 0.6
Q pmDE 1.0 BTmag 10.259 E BTmag 0.032 VTmag 9.183
E VTmag 0.019 Prox 999 TYC T HIP
CCDM RAdeg 305.32255194 DEdeg 2.83951083 EpRA 1990 1.48
EpDE 1990 1.26 E RAdeg 12.6 E DEdeg 15.2 Posflg P
Corr -0.2
SAO
SAO 125710 DelFlag RA1950 PmRA1950 0.0037
DE1950 PmDE1950 -0.018 Vmag 8.9 SpType K0
Double code Source 30 CatNum 7082 DM BD+02 4139
DMcomp BDsup HD 193651 M HD 0
GC RA1950rad 5.31787814 DE1950rad 0.04677585 PmRA2000 0.0039
PmDE2000 -0.021
 
 
20213+0250 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 202117.48+025022.8 Mag 9.78 PmRA 64.00
PmDE -19.0 Calc delta mag 0.07 Calc coord yes