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Doubles in session


Current system
18002-4258
WFC 204
HD 163821


Nearby doubles
19' : 17589-4310
DON 873

19' : 17591-4312
DON 874

25' : 18007-4321
LDS 620

31' : 17584-4236
CPO 565

36' : 17580-4233
TDT 599

39' : 18036-4253
DON 879

42' : 17583-4222
TDT 604

43' : 18030-4328
SEE 345

47' : 18044-4306
DON 880

53' : 17556-4313
BRT1004

60' : 17548-4301
B 1872

61' : 18026-4204
HJ 5004

62' : 18055-4238
CPO 572AB

63' : 17553-4227
CPO 562

64' : 17551-4327
TDT 569

65' : 17554-4222
VOU 77AB

69' : 17542-4243
HDS2526

71' : 18025-4152
BRT1013

72' : 17583-4407
BRT1006

73' : 18060-4223
CPO9256

74' : 17555-4206
VOU 78

78' : 18068-4325
HJ 5014

81' : 18003-4137
BRT1010

86' : 17537-4210
VOU 73

86' : 17558-4148
VOU 79

89' : 18050-4147
CPO 78



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.

18002-4258 WFC 204 (HD 163821)

 
 
18h 00m 13.12s -42° 58' 14.1" P.A. 291.00 sep 7.8 mag 9.67,10.58 Sp A1/2IV
 
 
Coord 2000 18002-4258 Discov num WFC 204 Comp Coord arcsec 2000 18 00 13.12 -42 58 14.1
Date first 1901 Date last 2015 Obs 9
Pa first 298 Pa last 290.9 P.A. Now (θ) 290.9°
Sep first 8.0 Sep last 7.769 Sep. Now (ρ) 7.769"
Mag pri 9.67 Mag sec 10.58 delta mag (ΔM) 0.91 Spectral class A1/2IV (white)
Pri motion ra -003 Sec motion ra -003
Pri motion dec -013 Sec motion dec -014
Notes V (Proper motion indicates physical)
rPM=0.07 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 163821 Constellation Corona Austrina SAO 228615 Tycho2 7907-02362-1
Gaia DR2 6725070654087945856 HD 163821 DM CP-42 8149
 
 
WDS 18002-4258 WFC 204 (HD 163821) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
WFC (Washington Fundamental Cat. - astrographs)
WFC1939 Pa - Schlesinger, F. & Barney, I. 1939TOYal..11....1S
WFC1939 Trans. Astron. Obs. Yale Univ., 11, 1, 1939 (-10 to -14 deg zones)
WFC1940a Pa - Schlesinger, F. & Barney, I. 1940TOYal..12a...1S
WFC1940a Trans. Astron. Obs. Yale Univ., 12a, 1, 1940 (-14 to -18 deg zones)
WFC1940b Pa - Schlesinger, F. & Barney, I. 1940TOYal..12b...1S
WFC1940b Trans. Astron. Obs. Yale Univ., 12b, 1, 1940 (-18 to -20 deg zones)
WFC1943a Pa - Schlesinger, F. & Barney, I. 1943TOYal..13a...1S
WFC1943a Trans. Astron. Obs. Yale Univ., 13a, 1, 1943 (-20 to -22 deg zones)
WFC1943b Pa - Schlesinger, F. & Barney, I. 1943TOYal..13b...1S
WFC1943b Trans. Astron. Obs. Yale Univ., 13b, 1, 1943 (-27 to -30 deg zones)
WFC1943c Pa - Schlesinger, F. & Barney, I. 1943TOYal..14....1S
WFC1943c Trans. Astron. Obs. Yale Univ., 14, 1, 1943 (-22 to -27 deg zones)
WFC1945a Pa - Barney, I. 1945TOYal..16....1B
WFC1945a Trans. Astron. Obs. Yale Univ., 16, 1, 1945 (-06 to -10 deg zones)
WFC1945b Pa - Barney, I. 1945TOYal..17....1B
WFC1945b Trans. Astron. Obs. Yale Univ., 17, 1, 1945 (-02 to -06 deg zones)
WFC1947 Pa - Barney, I. 1947TOYal..18....1B
WFC1947 Trans. Astron. Obs. Yale Univ., 18, 1, 1947 (+15 to +20 deg zones)
WFC1948 Pa - Barney, I. 1948TOYal..19....1B
WFC1948 Trans. Astron. Obs. Yale Univ., 19, 1, 1948 (+09 to +15 deg zones)
WFC1949 Pa - Barney, I. 1949TOYal..20....1B
WFC1949 Trans. Astron. Obs. Yale Univ., 20, 1, 1949 (+01 to +05 deg zones)
WFC1950a Pa - Baillaud, J. .
WFC1950a Paris Obs., 1950 (+17 to +25 deg zones)
WFC1950b Pa - Barney, I. 1950TOYal..21....1B
WFC1950b Trans. Astron. Obs. Yale Univ., 21, 1, 1950 (+01 to -02 deg zones)
WFC1950c Pa - Barney, I. 1950TOYal..22A...1B
WFC1950c Trans. Astron. Obs. Yale Univ., 22, 1, 1950 (+05 to +09 deg zones)
WFC1953 Pa - Barney, I. 1953TOYal..24....1B
WFC1953 Trans. Astron. Obs. Yale Univ., 24, 1, 1954 (+25 to +30 deg zones)
WFC1954a Pa - Jackson, J. & Stoy R.H. 1954AnCap..17.....J
WFC1954a Ann. Cape Obs. London 17, 1954
WFC1954a Cape Photographic Catalogue for 1950.0., Vol. 17: Zone -30 deg to -35 deg
WFC1954b Pa - Jackson, J. & Stoy R.H. 1954AnCap..18.....J
WFC1954b Ann. Cape Obs. London 18, 1954
WFC1954b Cape Photographic Catalogue for 1950.0., Vol. 18: Zone -35 deg to -40 deg
WFC1954c Pa - Barney, I. 1954TOYal..25....1B
WFC1954c Trans. Astron. Obs. Yale Univ., 25, 1, 1954 (+20 to +25 deg zones)
WFC1954d Pa - Barney, I., Hoffleit, D., & Jones, R.B. 1954TOYal..26....1B
WFC1954d Trans. Astron. Obs. Yale Univ., 26, 1, 1954 (+85 to +90 deg zones)
WFC1955 Pa - Jackson, J. & Stoy R.H. 1955AnCap..19.....J
WFC1955 Ann. Cape Obs. London 19, 1955
WFC1955 Cape Photographic Catalogue for 1950.0., Vol. 19: Zone -52 deg to -56 deg
WFC1958a Pa - Schorr, R. & Kohlschuetter, A. .
WFC1958a AGK2 Cat. North of -2.5 deg, Vol. 1-15, 1958 (Bergedorf)
WFC1958b Pa - Schorr, R. & Kohlschuetter, A. .
WFC1958b AGK2 Cat. North of -2.5 deg, Vol. 1-15, 1958 (Bonn)
WFC1958c Pa - Jackson, J. & Stoy R.H. 1958AnCap..20..155J
WFC1958c Ann. Cape Obs. London, 20, 155, 1958
WFC1958c Cape Photographic Catalogue for 1950.0. Vol. 20: Zones -56 to -60 deg
WFC1958d Pa - Jackson, J. & Stoy R.H. 1958AnCap..20..155J
WFC1958d Ann. Cape Obs., London, 20, 155, 1958
WFC1958d Cape Photographic Catalogue for 1950.0. Vol. 20: Zones -60 to -64 deg
WFC1959a Pa - Barney, I., Hoffleit, D., & Jones, R.B. 1959TOYal..26....1B
WFC1959a Trans. Astron. Obs. Yale Univ., 26, 1, 1959 (+50 to +55 deg zones)
WFC1959b Pa - Barney, I., Hoffleit, D., & Jones, R.B. 1959TOYal..27....1B
WFC1959b Trans. Astron. Obs. Yale Univ., 27, 1, 1959 (+55 to +60 deg zones)
WFC1966a Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966a Ann. Cape Obs. London, 21, 1966
WFC1966a Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -64 to -68 deg
WFC1966b Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966b Ann. Cape Obs. London, 21, 1966
WFC1966b Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -68 to -72 deg
WFC1966c Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966c Ann. Cape Obs. London, 21, 1966
WFC1966c Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -72 to -76 deg
WFC1966d Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966d Ann. Cape Obs. London, 21, 1966
WFC1966d Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -76 to -80 deg
WFC1967 Pa - Hoffleit, D. 1967TOYal..28....1H
WFC1967 Trans. Astron. Obs. Yale Univ., 28, 1, 1967 (-30 to -35 deg zones)
WFC1968a Pa - Stoy R.H. 1968AnCap..22..125S
WFC1968a Ann. Cape Obs., London, 22, 125, 1968
WFC1968a Cape Photographic Catalogue for 1950.0. Vol. 22: Zones -80 to -89 deg
WFC1968b Pa - Hoffleit, D. 1968TOYal..29....1H
WFC1968b Trans. Astron. Obs. Yale Univ., 29, 1, 1968 (-35 to -40 deg zones)
WFC1970 Pa - Hoffleit, D., Eckert, D., Lu, P., & Paranya, K. 1970TOYal..30....1H
WFC1970 Trans. Astron. Obs. Yale Univ., 30, 1, 1970 (-40 to -50 deg zones)
WFC1971 Pa - Lu, P.K. 1971TOYal..31....1L
WFC1971 Trans. Astron. Obs. Yale Univ., 31, 1, 1971 (-70 to -90 deg zones)
WFC1975 Pa - Dieckvoss, W. .
WFC1975 AGK3 Cat. North of -2.5 deg dec, Vol. 1-8, 1975
WFC1983a Pa - Eichhorn, H., Googe, W.D., Lukac, C.F., & Murphy, J.K. 1983AJ.....88..546E
WFC1983a AJ 88, 546, 1983 (Sydney Obs. -48 to -54 deg zones)
WFC1983b Pa - King, D.S. & Lomb, N.R. 1983RSNSW.116...53K
WFC1983b Journal & Proc., Royal Soc. New South Wales 116, 53-70, 1983
WFC1983b (Sydney Obs. -51 to -63.5 deg zones)
WFC1983c Pa - Fallon, F.W. & Hoffleit, D. 1983TrAOY..32....1F
WFC1983c Trans. Astron. Obs. Yale Univ., 32, 1, 1983 (-60 to -70 deg zones)
WFC1992 Pa - Zacharias, N., de Vegt, C., Nicholson, W., & Penston, M.J. 1992A&A...254..397Z
WFC1992 A&A 254, 397, 1992 (CPC2)
WFC1994 Pa - Bystrov, N.F., Polojentsev, D.D, Potter, H.I., Yagudin, L.I., & Zallez, R.F. 1994BICDS..44....3B
WFC1994 Bull. Inf. CDS 44, 3, 1994 (FOKAT)
WFC1998 Pa j Urban, S.E., Corbin, T.E., Wycoff, G.L., Martin, J.C., Jackson, E.S., 1998AJ....115.1212U
WFC1998 Zacharias, M.I., & Hall, D.M.
WFC1998 AJ 115, 1212, 1998 (Astrographic Cat. 2000)
WFC1999 Pa - Zacharias, N. & Zacharias, M.I. 1999AJ....118.2503Z
WFC1999 AJ 118, 2503, 1999
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18002-4258 WFC 204 1999 5 291 7.8 9.67 10.58 D 180013.12-425814.1
18002-4258 WFC 204 2011 7 291 7.8 9.67 10.58 A1/2IV 180013.12-425814.1
18002-4258 WFC 204 2015 9 291 7.8 9.67 10.58 A1/2IV 180013.12-425814.1

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

 
 
WDS 18002-4258 WFC 204 (HD 163821) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18002-4258 WFC 204 (HD 163821) : MEASURES
 
 
No records found.

 
 
WDS 18002-4258 (HD 163821) : VIRTUAL EYEPIECE
 
 

18002-4258 WFC 204A mag 9.67 Sp A1/2IV 18002-4258 WFC 204B sep 6.0 P.A. 297.60 mag 10.58 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 18002-4258 (HD 163821) : ALADIN DSS IMAGE @ 18h 00m 13.12s -42° 58' 14.1"
 
 
 
 
WDS 18002-4258 WFC 204 (HD 163821) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18002-4258 WFC 204 distance=0' 17589-4310 DON 873 distance=19' 17591-4312 DON 874 distance=19' 18007-4321 LDS 620 distance=25' 17584-4236 CPO 565 distance=31' 17580-4233 TDT 599 distance=36' 18036-4253 DON 879 distance=39' 17583-4222 TDT 604 distance=42' 18030-4328 SEE 345 distance=43' 18044-4306 DON 880 distance=47' 17556-4313 BRT1004 distance=53' 17548-4301 B 1872 distance=60' 18026-4204 HJ 5004 distance=61' 18055-4238 CPO 572AB distance=62' 17553-4227 CPO 562 distance=63' 17551-4327 TDT 569 distance=64' 17554-4222 VOU 77AB distance=65' 17554-4222 VOU 77AB,C distance=65' 17542-4243 HDS2526 distance=69' 18025-4152 BRT1013 distance=71' 17583-4407 BRT1006 distance=72' 18060-4223 CPO9256 distance=73' 17555-4206 VOU 78 distance=74' 18068-4325 HJ 5014 distance=78' 18003-4137 BRT1010 distance=81' 17537-4210 VOU 73 distance=86' 17558-4148 VOU 79 distance=86' 18050-4147 CPO 78 distance=89' 17589-4128 CPO 568 distance=92' 17526-4338 CPO 559 distance=92' 18032-4132 BRT1014 distance=92' 17547-4152 VOU 76 distance=93' 17543-4150 VOU 75 distance=95' 18084-4225 CPO 573 distance=96' 17540-4151 VOU 74 distance=97' 17520-4333 CPO 558 distance=97' 17514-4311 CPO 557 distance=98' 17512-4251 LDS 614 distance=100' 17529-4200 NSN 380 distance=101' 18064-4145 HJ 5011 distance=101' 17541-4414 BRT1002 distance=102' 18065-4141 DAW 220 distance=104' 18017-4442 BRT1012 distance=106' 18074-4409 B 2432 distance=106' 18096-4227 BRT1026 distance=109' 17597-4106 RST2012 distance=113' 17597-4105 RST2013 distance=114' 17500-4238 I 1341 distance=114' 17500-4232 BRT 999 distance=117' 18050-4445 FIN 9 distance=119' 18096-4400 KPP4087 distance=120' 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 18002-4258 WFC 204 291 7.8
Show 17589-4310 DON 873 57 0.2 19
Show 17591-4312 DON 874 61 1.6 19
Show 18007-4321 LDS 620 331 3.4 25
Show 17584-4236 CPO 565 329 1.7 31
Show 17580-4233 TDT 599 265 0.6 36
Show 18036-4253 DON 879 278 2.0 39
Show 17583-4222 TDT 604 257 0.4 42
Show 18030-4328 SEE 345 139 15.3 43
Show 18044-4306 DON 880 178 3.3 47
Show 17556-4313 BRT1004 294 3.4 53
Show 17548-4301 B 1872 332 0.2 60
Show 18026-4204 HJ 5004 289 12.7 61
Show 18055-4238 CPO 572 AB 289 5.1 62
Show 17553-4227 CPO 562 78 3.3 63
Show 17551-4327 TDT 569 105 2.3 64
Show 17554-4222 VOU 77 AB 128 4.4 65
Show 17554-4222 VOU 77 AB,C 22 6.0 65
Show 17542-4243 HDS2526 347 0.2 69
Show 18025-4152 BRT1013 348 6.1 71
Show 17583-4407 BRT1006 133 3.8 72
Show 18060-4223 CPO9256 65 4.5 73
Show 17555-4206 VOU 78 128 4.9 74
Show 18068-4325 HJ 5014 1.8 78
Show 18003-4137 BRT1010 125 6.1 81
Show 17537-4210 VOU 73 211 7.4 86
Show 17558-4148 VOU 79 154 4.7 86
Show 18050-4147 CPO 78 27 87.3 89
Show 17589-4128 CPO 568 100 4.5 92
Show 17526-4338 CPO 559 54 3.6 92
Show 18032-4132 BRT1014 272 5.7 92
Show 17547-4152 VOU 76 38 3.6 93
Show 17543-4150 VOU 75 156 8.1 95
Show 18084-4225 CPO 573 25 4.9 96
Show 17540-4151 VOU 74 62 12.7 97
Show 17520-4333 CPO 558 16 6.0 97
Show 17514-4311 CPO 557 225 3.7 98
Show 17512-4251 LDS 614 37 45.4 100
Show 17529-4200 NSN 380 347 6.8 101
Show 18064-4145 HJ 5011 344 28.1 101
Show 17541-4414 BRT1002 154 4.7 102
Show 18065-4141 DAW 220 243 8.1 104
Show 18017-4442 BRT1012 201 5.7 106
Show 18074-4409 B 2432 245 12.5 106
Show 18096-4227 BRT1026 4 5.7 109
Show 17597-4106 RST2012 140 0.7 113
Show 17597-4105 RST2013 206 0.7 114
Show 17500-4238 I 1341 111 0.4 114
Show 17500-4232 BRT 999 49 2.7 117
Show 18050-4445 FIN 9 193 1.4 119
Show 18096-4400 KPP4087 355 1.1 120

 
 
WDS 18002-4258 : COMPONENTS
 
 
  A
B pa=297.6°
sep=5.99"
 
 
18002-4258 A
 
 
Componente originario normalizzato AB Name HD 163821 Coord arcsec 2000 180013.12-425814.1 Mag 9.67
Spectral class A1/2IV (white) PmRA -3.00 PmDE -13.0 SAO 228615
Tycho2 7907-02362-1 HD 163821 DM CP-42 8149
Tycho2
Tycho2 7907-02362-1 Pflag RAmdeg 270.05466423 DEmdeg -42.97058040
PmRA 1.1 PmDE -11.6 E RAmdeg 11 E DEmdeg 15
E pmRA 1.2 E pmDE 1.2 EpRAm 1989.85 EpDEm 1987.68
Num 4 Q RAmdeg 1.0 Q DEmdeg 2.6 Q pmRA 1.1
Q pmDE 2.7 BTmag 9.833 E BTmag 0.023 VTmag 9.671
E VTmag 0.024 Prox 78 TYC T HIP
CCDM RAdeg 270.05466111 DEdeg -42.97055583 EpRA 1990 1.85
EpDE 1990 1.71 E RAdeg 10.7 E DEdeg 15.6 Posflg
Corr 0.0
SAO
SAO 228615 DelFlag RA1950 PmRA1950 0.0016
DE1950 PmDE1950 -0.008 Vmag 9.2 SpType A0
Double code Source 48 CatNum 16918 DM CP-42 8149
DMcomp A BDsup HD 163821 M HD 1
GC RA1950rad 4.69763537 DE1950rad -0.74994332 PmRA2000 0.0016
PmDE2000 -0.009
 
 
18002-4258 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 180012.64-425811.3 Mag 10.58 PmRA -3.00
PmDE -14.0 Tycho2 7907-02362-2 Calc delta mag 0.91 Calc coord yes
Tycho2
Tycho2 7907-02362-2 Pflag RAmdeg 270.05189715 DEmdeg -42.96981724
PmRA -0.5 PmDE -13.6 E RAmdeg 24 E DEmdeg 36
E pmRA 2.0 E pmDE 1.9 EpRAm 1990.30 EpDEm 1987.72
Num 3 Q RAmdeg 0.3 Q DEmdeg 0.2 Q pmRA 0.3
Q pmDE 0.2 BTmag 10.924 E BTmag 0.048 VTmag 10.576
E VTmag 0.047 Prox 78 TYC T HIP
CCDM RAdeg 270.05189861 DEdeg -42.96978583 EpRA 1990 1.85
EpDE 1990 1.72 E RAdeg 24.0 E DEdeg 37.0 Posflg
Corr -0.1