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Doubles in session


Current system
20478-2334
HDO 161 AB


Nearby doubles
28' : 20473-2307
BRT1566

29' : 20462-2352
HO 139

39' : 20451-2346
I 666

43' : 20450-2315
UC 4279

46' : 20449-2311
SEE 427

47' : 20444-2339
HJ 2991AB

49' : 20446-2311
OCC 91

58' : 20519-2344
RST3271

60' : 20498-2426
HTS 3AB

63' : 20469-2435
B 501

69' : 20526-2323
WHC 21

74' : 20530-2347
HJ 3003

76' : 20425-2358
KPP4212

78' : 20446-2230
TDT2512

80' : 20440-2233
ARA1933

80' : 20487-2216
UC 4296

82' : 20437-2434
SHK 1

91' : 20485-2205
DON 994

96' : 20417-2249
LDS4854

97' : 20434-2218
HJ 2989

105' : 20461-2516
EHR 17

110' : 20474-2145
OCC 56

110' : 20455-2148
UC 4281

112' : 20401-2411
HJ 5212

112' : 20462-2145
HDS2957

113' : 20527-2205
OCC9215



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20478-2334 HDO 161 AB

 
 
20h 47m 44.78s -23° 33' 59.7" P.A. 19.00 sep 29.8 mag 10.99,14.00
 
 
Coord 2000 20478-2334 Discov num HDO 161 Comp AB Coord arcsec 2000 20 47 44.78 -23 33 59.7
Date first 1919 Date last 2015 Obs 4
Pa first 23 Pa last 18.5 P.A. Now (θ) 18.5°
Sep first 28.8 Sep last 29.824 Sep. Now (ρ) 29.824"
Mag pri 10.99 Mag sec 14.00 delta mag (ΔM) 3.01 Spectral class
Pri motion ra +008 Sec motion ra +007
Pri motion dec -010 Sec motion dec +009
Notes
rPM=1.486
This double is not physical.
 
 
20478-2334 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 47 45 -23 33 60 HDO 161 AB 2015 4 19 29.8 10.99 14.00 3.01 <===
Show 20 47 45 -23 33 60 HDO 161 AC 2015 7 244 38.8 10.99 11.55 0.56
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Capricornus Tycho2 6922-00097-1 Gaia DR2 6806759076595424256
 
 
WDS 20478-2334 HDO 161 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HdO1882a Mb - Harvard Obs. 1882AnHar..13...17.
HdO1882a Harvard Ann. 13, 17, 1882
HdO1882b Ma j Harvard Obs. (measure by Alden, G.I.) 1882AnHar..13...17.
HdO1882b Harvard Ann. 13, 17, 1882
HdO1882c Ma - Harvard Obs. (measure by Davis, W.M.) 1882AnHar..13...17.
HdO1882c Harvard Ann. 13, 17, 1882
HdO1906A Ma - Harvard Obs. 1906QB821.B972.....
HdO1906A cited in BDS (Burnham Double Star Cat., 1906)
HdO9999 Ma - Harvard Obs. ...................
HdO9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20478-2334 HDO 161 AB 1998 2 19 29.7 10.99 14.00 D 204744.78-233359.7
20478-2334 HDO 161 AB 1999 3 19 29.7 10.99 14.00 D 204744.78-233359.7
20478-2334 HDO 161 AB 2015 4 19 29.8 10.99 14.00 204744.78-233359.7

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

 
 
WDS 20478-2334 HDO 161 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20478-2334 HDO 161 AB : MEASURES
 
 
No records found.

 
 
WDS 20478-2334 : VIRTUAL EYEPIECE
 
 

20478-2334 HDO 161A mag 10.99 20478-2334 HDO 161B sep 29.6 P.A. 17.10 mag 14 20478-2334 HDO 161C sep 36.2 P.A. 241.50 mag 11.55 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20478-2334 : ALADIN DSS IMAGE @ 20h 47m 44.78s -23° 33' 59.7"
 
 
 
 
WDS 20478-2334 HDO 161 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20478-2334 HDO 161AB distance=0' 20473-2307 BRT1566 distance=28' 20462-2352 HO 139 distance=29' 20451-2346 I 666 distance=39' 20450-2315 UC 4279 distance=43' 20449-2311 SEE 427 distance=46' 20444-2339 HJ 2991BC distance=47' 20444-2339 HJ 2991AB distance=47' 20446-2311 OCC 91 distance=49' 20519-2344 RST3271 distance=58' 20498-2426 HTS 3AB distance=60' 20498-2426 HTS 3AC distance=60' 20498-2426 HTS 3AD distance=60' 20498-2426 HTS 3AE distance=60' 20498-2426 HTS 3AF distance=60' 20498-2426 HTS 3AG distance=60' 20498-2426 HTS 3AH distance=60' 20498-2426 HTS 3AI distance=60' 20469-2435 B 501 distance=63' 20526-2323 WHC 21 distance=69' 20530-2347 HJ 3003 distance=74' 20425-2358 KPP4212 distance=76' 20446-2230 TDT2512 distance=78' 20440-2233 ARA1933 distance=80' 20487-2216 UC 4296 distance=80' 20437-2434 SHK 1 distance=82' 20485-2205 DON 994 distance=91' 20417-2249 LDS4854 distance=96' 20434-2218 HJ 2989 distance=97' 20461-2516 EHR 17 distance=105' 20474-2145 OCC 56 distance=110' 20455-2148 UC 4281 distance=110' 20401-2411 HJ 5212 distance=112' 20462-2145 HDS2957 distance=112' 20527-2205 OCC9215 distance=113' 20465-2141 B 500 distance=114' 20458-2139 OCC 55 distance=119' 20510-2525 KPP 694 distance=120' 20438-2525 UC 4271 distance=124' 20435-2524 DBR 323 distance=125' 20462-2131 OCC9196 distance=126' 20395-2230 WIS 340 distance=131' 20390-2428 B 2889 distance=132' 20571-2412 SEE 433 distance=134' 20380-2340 TDT2438 distance=134' 20464-2554 UC 4284 distance=142' 20392-2453 DAM 667 distance=142' 20444-2548 RST2155 distance=142' 20381-2244 B 497 distance=143' 20516-2548 RST2165 distance=144' 20383-2234 ARA1932 distance=144' 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 20478-2334 HDO 161 AB 19 29.8
Show 20478-2334 HDO 161 AC 244 38.8
Show 20473-2307 BRT1566 285 3.1 28
Show 20462-2352 HO 139 214 5.2 29
Show 20451-2346 I 666 149 0.4 39
Show 20450-2315 UC 4279 346 8.8 43
Show 20449-2311 SEE 427 132 3.7 46
Show 20444-2339 HJ 2991 BC 285 5.8 47
Show 20444-2339 HJ 2991 AB 9 38.1 47
Show 20446-2311 OCC 91 -1 0.1 49
Show 20519-2344 RST3271 151 0.3 58
Show 20498-2426 HTS 3 AB 109 3.6 60
Show 20498-2426 HTS 3 AC 310 10.1 60
Show 20498-2426 HTS 3 AD 261 12.7 60
Show 20498-2426 HTS 3 AE 164 14.8 60
Show 20498-2426 HTS 3 AF 247 16.5 60
Show 20498-2426 HTS 3 AG 26 19.9 60
Show 20498-2426 HTS 3 AH 93 21.0 60
Show 20498-2426 HTS 3 AI 205 25.7 60
Show 20469-2435 B 501 231 0.8 63
Show 20526-2323 WHC 21 19 31.5 69
Show 20530-2347 HJ 3003 198 1.4 74
Show 20425-2358 KPP4212 351 2.7 76
Show 20446-2230 TDT2512 57 2.1 78
Show 20440-2233 ARA1933 335 9.7 80
Show 20487-2216 UC 4296 251 33.2 80
Show 20437-2434 SHK 1 219 1.5 82
Show 20485-2205 DON 994 85 0.6 91
Show 20417-2249 LDS4854 106 3.3 96
Show 20434-2218 HJ 2989 153 29.5 97
Show 20461-2516 EHR 17 59 11.4 105
Show 20474-2145 OCC 56 -1 0.1 110
Show 20455-2148 UC 4281 280 7.8 110
Show 20401-2411 HJ 5212 284 25.0 112
Show 20462-2145 HDS2957 236 0.4 112
Show 20527-2205 OCC9215 174 0.0 113
Show 20465-2141 B 500 124 1.5 114
Show 20458-2139 OCC 55 -1 0.1 119
Show 20510-2525 KPP 694 58 6.2 120
Show 20438-2525 UC 4271 61 8.1 124
Show 20435-2524 DBR 323 175 2.2 125
Show 20462-2131 OCC9196 -1 0.0 126
Show 20395-2230 WIS 340 327 104.3 131
Show 20390-2428 B 2889 220 6.8 132
Show 20571-2412 SEE 433 57 2.5 134
Show 20380-2340 TDT2438 104 0.5 134
Show 20464-2554 UC 4284 110 12.5 142
Show 20392-2453 DAM 667 98 8.0 142
Show 20444-2548 RST2155 353 1.2 142
Show 20381-2244 B 497 275 0.6 143
Show 20516-2548 RST2165 134 1.9 144

 
 
WDS 20478-2334 : COMPONENTS
 
 
  A B
B pa=17.1°
sep=29.58"
 
C pa=241.5°
sep=36.20"
pa=221.6°
sep=60.96"
 
 
20478-2334 A
 
 
Coord arcsec 2000 204744.78-233359.7 Mag 10.99 PmRA 8.00 PmDE -10.0
Tycho2 6922-00097-1
Tycho2
Tycho2 6922-00097-1 Pflag RAmdeg 311.93661177 DEmdeg -23.56659605
PmRA 7.6 PmDE -12.7 E RAmdeg 46 E DEmdeg 65
E pmRA 3.0 E pmDE 3.0 EpRAm 1988.50 EpDEm 1984.32
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.3 Q pmRA 1.3
Q pmDE 0.3 BTmag 11.915 E BTmag 0.109 VTmag 10.992
E VTmag 0.080 Prox 387 TYC T HIP
CCDM RAdeg 311.93659278 DEdeg -23.56656528 EpRA 1990 1.71
EpDE 1990 1.31 E RAdeg 46.9 E DEdeg 67.6 Posflg
Corr -0.2
 
 
20478-2334 B
 
 
Coord arcsec 2000 204745.41-233331.4 Mag 14 PmRA 7.00 PmDE 9.0
Calc delta mag 3.01 Calc coord yes
 
 
20478-2334 C
 
 
Coord arcsec 2000 204742.47-233417.0 Mag 11.55 PmRA -1.00 PmDE -20.0
Tycho2 6922-00157-1 Calc delta mag 0.56 Calc coord yes
Tycho2
Tycho2 6922-00157-1 Pflag RAmdeg 311.92607629 DEmdeg -23.57137929
PmRA -2.9 PmDE -20.1 E RAmdeg 69 E DEmdeg 95
E pmRA 3.3 E pmDE 3.3 EpRAm 1985.28 EpDEm 1978.50
Num 3 Q RAmdeg 0.2 Q DEmdeg 0.0 Q pmRA 0.2
Q pmDE 0.0 BTmag 12.778 E BTmag 0.280 VTmag 11.552
E VTmag 0.127 Prox 387 TYC HIP
CCDM RAdeg 311.92608389 DEdeg -23.57133083 EpRA 1990 1.73
EpDE 1990 1.31 E RAdeg 71.9 E DEdeg 103.7 Posflg
Corr -0.2