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Doubles in session


Current system
18428-1523
HLD 145
HD 172812


Nearby doubles
20' : 18437-1534
J 2224

25' : 18427-1547
HU 250

28' : 18442-1539
BRT 633

39' : 18453-1509
BRT 594

43' : 18420-1445
J 2223

43' : 18419-1445
J 2222

46' : 18443-1443
LEO 21AB

49' : 18424-1435
HU 249

49' : 18461-1529
HU 251

52' : 18408-1603
OL 8

55' : 18390-1528
J 1834

60' : 18409-1430
BU 967AB

65' : 18444-1623
HJ 2835

75' : 18457-1624
J 1656

77' : 18453-1416
RST4019

80' : 18387-1429
HDS2641AB

80' : 18387-1430
CRC 30AB

81' : 18468-1428
RST4596

82' : 18450-1409
JNN 323

83' : 18369-1532
J 2220

91' : 18480-1435
CRC 31

95' : 18375-1619
ARA 111

100' : 18477-1633
RST4020

100' : 18369-1617
ARA 110

108' : 18381-1400
BU 135AB

112' : 18457-1340
HO 438



Selections
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Binary Systems
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Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18428-1523 HLD 145 (HD 172812)

 
 
18h 42m 45.37s -15° 23' 19.4" P.A. 51.00 sep 1.5 mag 9.54,9.81 Sp G8V
 
 
Coord 2000 18428-1523 Discov num HLD 145 Comp Coord arcsec 2000 18 42 45.37 -15 23 19.4
Date first 1882 Date last 2017 Obs 11
Pa first 40 Pa last 51 P.A. Now (θ) 51°
Sep first 1.0 Sep last 1.498 Sep. Now (ρ) 1.498"
Mag pri 9.54 Mag sec 9.81 delta mag (ΔM) 0.27 Spectral class G8V (yellow)
Pri motion ra -019 Sec motion ra -019
Pri motion dec -012 Sec motion dec -012
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 172812 Constellation Scutum Tycho2 6280-00370-1 Gaia DR2 4100365729436119808
HD 172812
 
 
WDS 18428-1523 HLD 145 (HD 172812) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Hld1874 Ma - Holden, E.S. .
Hld1874 Washington Observations, 1874
Hld1875 Ma - Holden, E.S. .
Hld1875 Washington Observations, 1875
Hld1875b Ma j Holden, E.S. & Newcomb, S. 1875AN.....86..321H
Hld1875b AN 86, 321, 1875
Hld1875c Ma j Holden, E.S. 1875AN.....86..321H
Hld1875c AN 86, 321, 1875
Hld1876 Ma - Holden, E.S. .
Hld1876 Washington Observations, 1876
Hld1876b Ma j Holden, E.S. 1876AN.....88..131H
Hld1876b AN 88, 131, 1876
Hld1877 Ma - Holden, E.S. 1877AN.....90..161H
Hld1877 AN 90, 161, 1877
Hld1877b Ma j Holden, E.S. 1877AN.....90..161H
Hld1877b AN 90, 161, 1877
Hld1878 Ma - Holden, E.S. .
Hld1878 Washington Observations, 1878
Hld1878b Ma j Holden, E.S. 1878AN.....93...65H
Hld1878b AN 93, 65, 1878 (data also in Hld1878)
Hld1879 Ma - Holden, E.S. .
Hld1879 Washington Observations, 1879
Hld1879b Ma j Holden, E.S. 1879AN.....95..329H
Hld1879b AN 95, 329, 1879 (data also in Hld1879)
Hld1880 Ma - Holden, E.S. .
Hld1880 Washington Observations, 1880
Hld1880b Ma j Holden, E.S. 1880AN.....97..319H
Hld1880b AN 97, 319, 1880 (data also in Hld1880)
Hld1881 Ma - Holden, E.S. .
Hld1881 Washington Observations, 1881
Hld1881b Ma j Holden, E.S. 1881MNRAS..41..416.
Hld1881b MNRAS 41, 416, 1881
Hld1882 Ma - Holden, E.S. 1882PWasO...1...77H
Hld1882 Pub. Washburn Obs. 1, 77, 1882 (see Pub. Lick Obs. 2, 1894) 1894PLicO...2.....B
Hld1884 Ma - Holden, E.S. 1884PWasO...2...97H
Hld1884 Pub. Washburn Obs. 2, 97, 1884
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18428-1523 HLD 145 2000 10 54 1.5 9.54 9.81 G8V 184245.37-152319.4
18428-1523 HLD 145 2017 11 52 1.5 9.54 9.81 G8V 184245.37-152319.4

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

 
 
WDS 18428-1523 HLD 145 (HD 172812) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18428-1523 HLD 145 (HD 172812) : MEASURES
 
 
No records found.

 
 
WDS 18428-1523 (HD 172812) : VIRTUAL EYEPIECE
 
 

18428-1523 HLD 145A mag 9.54 Sp G8V 18428-1523 HLD 145B sep 1.5 P.A. 50.00 mag 9.81 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18428-1523 (HD 172812) : ALADIN DSS IMAGE @ 18h 42m 45.37s -15° 23' 19.4"
 
 
 
 
WDS 18428-1523 HLD 145 (HD 172812) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18428-1523 HLD 145 distance=1' 18437-1534 J 2224 distance=20' 18427-1547 HU 250 distance=25' 18442-1539 BRT 633 distance=28' 18453-1509 BRT 594 distance=39' 18420-1445 J 2223 distance=43' 18419-1445 J 2222 distance=43' 18443-1443 LEO 21AB distance=46' 18443-1443 LEO 21AC distance=46' 18443-1443 J 2144AD distance=46' 18424-1435 HU 249 distance=49' 18461-1529 HU 251 distance=49' 18408-1603 OL 8 distance=52' 18390-1528 J 1834 distance=55' 18409-1430 BU 967AB distance=60' 18409-1430 BU 967AC distance=60' 18409-1430 DAM 13AD distance=60' 18444-1623 HJ 2835 distance=65' 18457-1624 J 1656 distance=75' 18453-1416 RST4019 distance=77' 18387-1429 HDS2641AB distance=80' 18387-1430 CRC 30AB distance=80' 18387-1430 CRC 30AC distance=80' 18387-1430 CRC 30AD distance=80' 18468-1428 RST4596 distance=81' 18450-1409 JNN 323 distance=82' 18369-1532 J 2220 distance=83' 18480-1435 CRC 31 distance=91' 18375-1619 ARA 111 distance=95' 18477-1633 RST4020 distance=100' 18369-1617 ARA 110 distance=100' 18381-1400 BU 135AB distance=108' 18381-1400 BU 135AC distance=108' 18381-1400 SLE 218AD distance=108' 18381-1400 SLE 218AE distance=108' 18381-1400 B 2911AF distance=108' 18381-1400 B 2911AG distance=108' 18457-1340 HO 438 distance=112' 18480-1647 HJ 2838 distance=113' 18505-1501 J 529 distance=114' 18489-1412 NSN 137 distance=115' 18360-1625 TDT 954 distance=116' 18444-1330 GWP2797 distance=116' 18441-1328 J 2225 distance=118' 18442-1328 J 2226 distance=118' 18444-1328 J 2227 distance=118' 18396-1713 GWP2792 distance=120' 18349-1442 STF2337AB distance=121' 18349-1442 ARN 47AC distance=121' 18348-1449 J 2218 distance=122' 18362-1407 SNA 92 distance=122' 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 18428-1523 HLD 145 51 1.5 1
Show 18437-1534 J 2224 202 10.4 20
Show 18427-1547 HU 250 298 2.2 25
Show 18442-1539 BRT 633 42 4.8 28
Show 18453-1509 BRT 594 110 2.2 39
Show 18420-1445 J 2223 29 4.7 43
Show 18419-1445 J 2222 162 4.8 43
Show 18443-1443 LEO 21 AB 15 4.2 46
Show 18443-1443 LEO 21 AC 281 34.1 46
Show 18443-1443 J 2144 AD 23 17.5 46
Show 18424-1435 HU 249 225 3.2 49
Show 18461-1529 HU 251 304 2.6 49
Show 18408-1603 OL 8 71 3.4 52
Show 18390-1528 J 1834 59 7.5 55
Show 18409-1430 BU 967 AB 195 2.4 60
Show 18409-1430 BU 967 AC 53 39.0 60
Show 18409-1430 DAM 13 AD 66 55.5 60
Show 18444-1623 HJ 2835 303 15.3 65
Show 18457-1624 J 1656 287 7.6 75
Show 18453-1416 RST4019 81 0.5 77
Show 18387-1429 HDS2641 AB 358 0.1 80
Show 18387-1430 CRC 30 AB 261 4.8 80
Show 18387-1430 CRC 30 AC 300 9.6 80
Show 18387-1430 CRC 30 AD 61 7.3 80
Show 18468-1428 RST4596 153 5.8 81
Show 18450-1409 JNN 323 124 3.2 82
Show 18369-1532 J 2220 15 6.0 83
Show 18480-1435 CRC 31 234 7.6 91
Show 18375-1619 ARA 111 197 9.2 95
Show 18477-1633 RST4020 26 3.5 100
Show 18369-1617 ARA 110 279 15.0 100
Show 18381-1400 BU 135 AB 189 2.5 108
Show 18381-1400 BU 135 AC 78 15.0 108
Show 18381-1400 SLE 218 AD 338 120.7 108
Show 18381-1400 SLE 218 AE 108 118.7 108
Show 18381-1400 B 2911 AF 56 36.3 108
Show 18381-1400 B 2911 AG 74 39.8 108
Show 18457-1340 HO 438 71 2.7 112
Show 18480-1647 HJ 2838 335 33.4 113
Show 18505-1501 J 529 353 7.5 114
Show 18489-1412 NSN 137 90 8.3 115
Show 18360-1625 TDT 954 204 2.0 116
Show 18444-1330 GWP2797 169 67.8 116
Show 18441-1328 J 2225 62 6.1 118
Show 18442-1328 J 2226 325 4.7 118
Show 18444-1328 J 2227 225 5.3 118
Show 18396-1713 GWP2792 136 22.6 120
Show 18349-1442 STF2337 AB 296 16.6 121
Show 18349-1442 ARN 47 AC 80 377.8 121
Show 18348-1449 J 2218 169 6.6 122
Show 18362-1407 SNA 92 72 0.0 122

 
 
WDS 18428-1523 : COMPONENTS
 
 
  A
B pa=50.0°
sep=1.47"
 
 
18428-1523 A
 
 
Componente originario normalizzato AB Name HD 172812 Coord arcsec 2000 184245.37-152319.4 Mag 9.54
Spectral class G8V (yellow) PmRA -19.00 PmDE -12.0 Tycho2 6280-00370-1
HD 172812
Tycho2
Tycho2 6280-00370-1 Pflag P RAmdeg 280.68904702 DEmdeg -15.38872134
PmRA -19.1 PmDE -11.7 E RAmdeg 20 E DEmdeg 23
E pmRA 2.1 E pmDE 2.1 EpRAm 1990.14 EpDEm 1989.70
Num 4 Q RAmdeg 2.2 Q DEmdeg 1.0 Q pmRA 2.2
Q pmDE 1.0 BTmag 10.370 E BTmag 0.039 VTmag 9.541
E VTmag 0.030 Prox 16 TYC T HIP
CCDM RAdeg 280.68896583 DEdeg -15.38879639 EpRA 1990 1.57
EpDE 1990 1.56 E RAdeg 21.1 E DEdeg 23.7 Posflg D
Corr 0.1
 
 
18428-1523 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184245.45-152318.5 Mag 9.81 PmRA -19.00
PmDE -12.0 Tycho2 6280-00370-2 Calc delta mag 0.27 Calc coord yes
Tycho2
Tycho2 6280-00370-2 Pflag P RAmdeg 280.68904702 DEmdeg -15.38872134
PmRA -19.1 PmDE -11.7 E RAmdeg 20 E DEmdeg 23
E pmRA 2.1 E pmDE 2.1 EpRAm 1990.14 EpDEm 1989.70
Num 4 Q RAmdeg 2.2 Q DEmdeg 1.0 Q pmRA 2.2
Q pmDE 1.0 BTmag 10.716 E BTmag 0.054 VTmag 9.814
E VTmag 0.038 Prox 16 TYC T HIP
CCDM RAdeg 280.68930806 DEdeg -15.38851806 EpRA 1990 1.56
EpDE 1990 1.56 E RAdeg 27.9 E DEdeg 31.4 Posflg D
Corr 0.1