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Doubles in session


Current system
20499+1255
HJ 1577


Nearby doubles
13' : 20502+1246
J 3277

17' : 20492+1243
GWP3001

19' : 20488+1248
GWP3000

23' : 20503+1317
BPM2279

23' : 20496+1233
BU 1495AB

26' : 20498+1321
HJ 1578

28' : 20496+1322
TDT2565

36' : 20497+1331
BPM2277

37' : 20523+1304
GRV 390

39' : 20486+1223
BPM2273

42' : 20471+1257
BPM2265

52' : 20516+1340
TDT2583

61' : 20519+1203
J 3245

61' : 20460+1235
KPP 477

62' : 20541+1306
STF2734

63' : 20457+1302
WFC 258

63' : 20466+1334
GWP2996

66' : 20524+1200
GWP3008

67' : 20467+1343
BPM2262

69' : 20524+1353
BPM2285

71' : 20528+1351
UC 4315AB

73' : 20450+1244
BU 64AB

74' : 20481+1404
UC 4293

74' : 20550+1259
BPM2293

74' : 20487+1407
LIT 34

76' : 20549+1236
BPM2292



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.

20499+1255 HJ 1577

 
 
20h 49m 54.46s +12° 55' 08.1" P.A. 245.00 sep 9.4 mag 8.91,9.40 Sp G0
 
 
Coord 2000 20499+1255 Discov num HJ 1577 Comp Coord arcsec 2000 20 49 54.46 +12 55 08.1
Date first 1828 Date last 2016 Obs 22
Pa first 256 Pa last 245.3 P.A. Now (θ) 245.3°
Sep first 12.0 Sep last 9.382 Sep. Now (ρ) 9.382"
Mag pri 8.91 Mag sec 9.40 delta mag (ΔM) 0.49 Spectral class G0 (yellow)
Pri motion ra +026 Sec motion ra +032
Pri motion dec +002 Sec motion dec +003
Notes
rPM=0.189 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Tycho2 1098-00517-1 Gaia DR2 1761024243055484672 ADS 14340
 
 
WDS 20499+1255 HJ 1577 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma 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
20499+1255 HJ 1577 2000 8 246 9.2 8.91 9.40 G0 D 204954.46+125508.1
20499+1255 HJ 1577 2010 11 246 9.2 8.91 9.40 G0 D 204954.46+125508.1
20499+1255 HJ 1577 2015 14 246 9.3 8.91 9.40 G0 204954.46+125508.1
20499+1255 HJ 1577 2016 15 246 9.4 8.91 9.40 G0 204954.46+125508.1

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

 
 
WDS 20499+1255 HJ 1577 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20499+1255 HJ 1577 : MEASURES
 
 
No records found.

 
 
WDS 20499+1255 : VIRTUAL EYEPIECE
 
 

20499+1255 HJ 1577A mag 8.91 Sp G0 20499+1255 HJ 1577B sep 9.2 P.A. 244.70 mag 9.4 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 20499+1255 : ALADIN DSS IMAGE @ 20h 49m 54.46s +12° 55' 08.1"
 
 
 
 
WDS 20499+1255 HJ 1577 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20499+1255 HJ 1577 distance=1' 20502+1246 J 3277 distance=13' 20492+1243 GWP3001 distance=17' 20488+1248 GWP3000 distance=19' 20503+1317 BPM2279 distance=23' 20496+1233 BU 1495AB distance=23' 20496+1233 BU 1495AC distance=23' 20496+1233 BU 1495AD distance=23' 20498+1321 HJ 1578 distance=26' 20496+1322 TDT2565 distance=28' 20497+1331 BPM2277 distance=36' 20523+1304 GRV 390 distance=37' 20486+1223 BPM2273 distance=39' 20471+1257 BPM2265 distance=42' 20516+1340 TDT2583 distance=52' 20519+1203 J 3245 distance=61' 20460+1235 KPP 477 distance=61' 20541+1306 STF2734 distance=62' 20457+1302 WFC 258 distance=63' 20466+1334 GWP2996 distance=63' 20524+1200 GWP3008 distance=66' 20467+1343 BPM2262 distance=67' 20524+1353 BPM2285 distance=69' 20528+1351 UC 4315AB distance=71' 20450+1244 D 32CD distance=73' 20450+1244 BU 64AB distance=73' 20450+1244 STTA209AC distance=73' 20450+1244 BU 64AD distance=73' 20481+1404 UC 4293 distance=74' 20550+1259 BPM2293 distance=74' 20487+1407 LIT 34 distance=74' 20549+1236 BPM2292 distance=76' 20523+1144 BPM2284 distance=80' 20446+1312 TDS1098 distance=80' 20553+1236 BPM2295 distance=82' 20449+1219 B 2910Aa,Ab distance=82' 20449+1219 STF2723AB distance=82' 20449+1219 BU 1492AC distance=82' 20484+1134 BPM2270 distance=84' 20446+1333 YSC 242AB distance=86' 20440+1256 DAM 218 distance=87' 20556+1234 HJ 1592AB distance=87' 20556+1234 DRS 30Aa,Ab distance=87' 20441+1258 J 1889 distance=89' 20439+1255 J 1888 distance=89' 20440+1225 HJ 1566AB distance=90' 20440+1225 HJ 1566AC distance=90' 20541+1402 J 846 distance=91' 20529+1415 GAI9015AB distance=92' 20529+1415 GAI9015AC distance=92' 20494+1124 J 194AB distance=92' 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 20499+1255 HJ 1577 245 9.4 1
Show 20502+1246 J 3277 326 4.1 13
Show 20492+1243 GWP3001 126 94.3 17
Show 20488+1248 GWP3000 280 24.1 19
Show 20503+1317 BPM2279 146 89.2 23
Show 20496+1233 BU 1495 AB 19 52.1 23
Show 20496+1233 BU 1495 AC 86 105.5 23
Show 20496+1233 BU 1495 AD 276 189.6 23
Show 20498+1321 HJ 1578 311 11.5 26
Show 20496+1322 TDT2565 136 1.4 28
Show 20497+1331 BPM2277 190 94.4 36
Show 20523+1304 GRV 390 107 42.6 37
Show 20486+1223 BPM2273 132 52.3 39
Show 20471+1257 BPM2265 51 16.1 42
Show 20516+1340 TDT2583 98 0.6 52
Show 20519+1203 J 3245 249 3.8 61
Show 20460+1235 KPP 477 52 4.5 61
Show 20541+1306 STF2734 227 24.4 62
Show 20457+1302 WFC 258 284 11.7 63
Show 20466+1334 GWP2996 157 54.2 63
Show 20524+1200 GWP3008 252 11.1 66
Show 20467+1343 BPM2262 331 74.6 67
Show 20524+1353 BPM2285 88 101.7 69
Show 20528+1351 UC 4315 AB 157 14.6 71
Show 20450+1244 D 32 CD 15 60.8 73
Show 20450+1244 BU 64 AB 174 0.7 73
Show 20450+1244 STTA209 AC 155 97.2 73
Show 20450+1244 BU 64 AD 117 64.3 73
Show 20481+1404 UC 4293 5 14.4 74
Show 20550+1259 BPM2293 25 100.2 74
Show 20487+1407 LIT 34 206 9.5 74
Show 20549+1236 BPM2292 143 61.9 76
Show 20523+1144 BPM2284 252 115.9 80
Show 20446+1312 TDS1098 279 0.9 80
Show 20553+1236 BPM2295 182 40.1 82
Show 20449+1219 B 2910 Aa,Ab 52 0.1 82
Show 20449+1219 STF2723 AB 140 1.0 82
Show 20449+1219 BU 1492 AC 30 37.0 82
Show 20484+1134 BPM2270 197 117.4 84
Show 20446+1333 YSC 242 AB 157 1.5 86
Show 20440+1256 DAM 218 342 5.7 87
Show 20556+1234 HJ 1592 AB 15 34.4 87
Show 20556+1234 DRS 30 Aa,Ab 116 0.2 87
Show 20441+1258 J 1889 10 4.6 89
Show 20439+1255 J 1888 158 10.0 89
Show 20440+1225 HJ 1566 AB 16 16.9 90
Show 20440+1225 HJ 1566 AC 331 32.4 90
Show 20541+1402 J 846 155 3.6 91
Show 20529+1415 GAI9015 AB 277 1.3 92
Show 20529+1415 GAI9015 AC 167 51.8 92
Show 20494+1124 J 194 AB 299 0.6 92

 
 
WDS 20499+1255 : COMPONENTS
 
 
  A
B pa=244.7°
sep=9.19"
 
 
20499+1255 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204954.46+125508.1 Mag 8.91 Spectral class G0 (yellow)
PmRA 26.00 PmDE 2.0 Tycho2 1098-00517-1 ADS 14340
DM BD+12 4474
Tycho2
Tycho2 1098-00517-1 Pflag RAmdeg 312.47693075 DEmdeg 12.91893039
PmRA 24.9 PmDE 3.0 E RAmdeg 9 E DEmdeg 11
E pmRA 1.3 E pmDE 1.2 EpRAm 1991.13 EpDEm 1990.59
Num 6 Q RAmdeg 0.4 Q DEmdeg 0.9 Q pmRA 0.5
Q pmDE 0.9 BTmag 9.584 E BTmag 0.022 VTmag 8.912
E VTmag 0.016 Prox 999 TYC T HIP
CCDM RAdeg 312.47687250 DEdeg 12.91892333 EpRA 1990 1.76
EpDE 1990 1.67 E RAdeg 9.4 E DEdeg 10.8 Posflg
Corr -0.1
CCDM
Ccdm 20499+1255 RComp Comp A Note1
Note2 Discov num DRAs 0.42 DDEs 8.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.0 Sp PmNote *
PmRA 29 PmDE 15 Dm number +12 4474 Cat1 BD
Name2 +12 2397 Cat2 AGK2/3 HD M HD
ADS BDS A14340 M ADS BDS N IDS IDS 20452N1233A
HIC
 
 
20499+1255 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204953.89+125504.2 Mag 9.4 PmRA 32.00
PmDE 3.0 Calc delta mag 0.49 Calc coord yes
CCDM
Ccdm 20499+1255 RComp Comp B Note1
Note2 Discov num HJ 1577 DRAs -0.17 DDEs 5.5
R dRAs 10 Year 1903 Theta 247 Rho 9.3
Obs 3 Vmag 9.5 Sp PmNote *
PmRA 30 PmDE 21 Dm number Cat1
Name2 +12 2396 Cat2 AGK2/3 HD M HD
ADS BDS A14340 M ADS BDS N IDS IDS 20452N1233B
HIC