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Doubles in session


Current system
18530-1623
RST 4022
HD 174801


Nearby doubles
4' : 18529-1625
RST4021

33' : 18551-1609
BRT 634

37' : 18555-1626
ARA 112

37' : 18555-1623
SOZ 18

37' : 18528-1658
J 2238

42' : 18509-1646
HLD 148

45' : 18557-1646
J 1661

48' : 18560-1637
J 1662

57' : 18498-1655
TDT4316

59' : 18496-1654
HWE 44AB

60' : 18516-1719
HU 255

63' : 18528-1725
HU 257

73' : 18487-1702
J 2235AB

75' : 18517-1511
TDT1092

76' : 18549-1733
RST3205AB

76' : 18480-1647
HJ 2838

78' : 18477-1633
RST4020

83' : 18553-1738
HJ 2844

84' : 18559-1735
HJ 2845

90' : 18510-1747
HJ 2842

90' : 18536-1454
J 1660

91' : 18505-1501
J 529

93' : 18494-1740
TDT1072

97' : 18593-1658
RST3209

101' : 18494-1750
HJ 2840

104' : 18457-1624
J 1656



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.

18530-1623 RST 4022 (HD 174801)

 
 
18h 53m 00.44s -16° 22' 53.3" P.A. 312.00 sep 0.4 mag 7.22,9.35 Sp B8/9II dist. 555.56 pc (1812.24 l.y.)
 
 
Coord 2000 18530-1623 Discov num RST4022 Comp Coord arcsec 2000 18 53 00.44 -16 22 53.3
Date first 1938 Date last 2018 Obs 5
Pa first 318 Pa last 311.5 P.A. Now (θ) 311.5°
Sep first 0.6 Sep last 0.38 Sep. Now (ρ) 0.38"
Mag pri 7.22 Mag sec 9.35 delta mag (ΔM) 2.13 Spectral class B8/9II (blue-white)
Pri motion ra +004 Sec motion ra
Pri motion dec -010 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 174801 Constellation Sagittarius SAO 161933 HIP 92671
Tycho2 6281-01454-1 Gaia DR2 4099307282029083904 HD 174801 GC 25894
BD BD-16 5060 Distance 555.56 Distance ly 1812.24
 
 
WDS 18530-1623 RST 4022 (HD 174801) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Rst1933 T - Rossiter, R.A. 1933MmRAS..65...27R
Rst1933 MemRAS 65, 27, 1933
Rst1937 Ma - Rossiter, R.A. 1937MmRAS..65...51R
Rst1937 MemRAS 65, 51, 1937
Rst1943 Ma - Rossiter, R.A. 1943POMic...8..133R
Rst1943 Pub. Univ. Michigan Obs. 8, 133, 1943
Rst1944 - Rossiter, R.A. 1944POMic...9....1R
Rst1944 Pub. Univ. Michigan Obs. 9, 1, 1944
Rst1947 Ma - Rossiter, R.A. 1947POMic...9....7R
Rst1947 Pub. Univ. Michigan Obs. 9, 7, 1947
Rst1955 Ma j Rossiter, R.A. 1955POMic..11....1R
Rst1955 +P+ Pub. Univ. Michigan Obs. 11, 1, 1955
Rst1964 Ma - Rossiter, R.A. 1964POMic...9...73R
Rst1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18530-1623 RST4022 1991 4 314 0.4 7.22 9.35 B8/9II D 185300.44-162253.3
18530-1623 RST4022 2018 5 312 0.4 7.22 9.35 B8/9II 185300.44-162253.3

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

 
 
WDS 18530-1623 RST 4022 (HD 174801) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18530-1623 RST 4022 (HD 174801) : MEASURES
 
 
No records found.

 
 
WDS 18530-1623 (HD 174801) : VIRTUAL EYEPIECE
 
 

18530-1623 RST4022A mag 7.22 Sp B8/9II 18530-1623 RST4022B sep 0.4 P.A. 312.70 mag 9.35 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 18530-1623 (HD 174801) : ALADIN DSS IMAGE @ 18h 53m 00.44s -16° 22' 53.3"
 
 
 
 
WDS 18530-1623 RST 4022 (HD 174801) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18530-1623 RST4022 distance=0' 18529-1625 RST4021 distance=4' 18551-1609 BRT 634 distance=33' 18555-1626 ARA 112 distance=37' 18555-1623 SOZ 18 distance=37' 18528-1658 J 2238 distance=37' 18509-1646 HLD 148 distance=42' 18557-1646 J 1661 distance=45' 18560-1637 J 1662 distance=48' 18498-1655 TDT4316 distance=57' 18496-1654 HWE 44AB distance=59' 18496-1654 HWE 44AC distance=59' 18496-1654 KNP 3AD distance=59' 18516-1719 HU 255 distance=60' 18528-1725 HU 257 distance=63' 18487-1702 J 2235AB distance=73' 18487-1702 J 2235BC distance=75' 18517-1511 TDT1092 distance=75' 18549-1733 RST3205AB distance=76' 18549-1733 HJ 2843AB,C distance=76' 18480-1647 HJ 2838 distance=76' 18477-1633 RST4020 distance=78' 18553-1738 HJ 2844 distance=83' 18559-1735 HJ 2845 distance=84' 18510-1747 HJ 2842 distance=90' 18536-1454 J 1660 distance=90' 18505-1501 J 529 distance=91' 18494-1740 TDT1072 distance=93' 18593-1658 RST3209 distance=97' 18494-1750 HJ 2840 distance=101' 18457-1624 J 1656 distance=104' 18508-1446 J 2237 distance=105' 18514-1441 RST4604 distance=105' 18513-1438 J 2153 distance=107' 18568-1451 HJ 5503 distance=107' 18513-1435 J 2152 distance=110' 18515-1434 J 2154 distance=110' 19002-1704 GWP2801AB distance=111' 18461-1529 HU 251 distance=114' 18506-1813 RST3200 distance=115' 19010-1613 HU 260 distance=116' 18503-1812 TDT1080 distance=116' 18505-1818 TDT1081 distance=121' 18444-1623 HJ 2835 distance=125' 18511-1421 RST4602 distance=125' 18480-1435 CRC 31 distance=130' 18500-1826 J 1658 distance=131' 18480-1814 RST3198 distance=133' 18442-1539 BRT 633 distance=134' 18453-1509 BRT 594 distance=135' 18480-1817 WSI 36 distance=135' 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 18530-1623 RST4022 312 0.4
Show 18529-1625 RST4021 118 0.2 4
Show 18551-1609 BRT 634 337 3.9 33
Show 18555-1626 ARA 112 176 10.7 37
Show 18555-1623 SOZ 18 142 17.7 37
Show 18528-1658 J 2238 182 4.8 37
Show 18509-1646 HLD 148 30 5.0 42
Show 18557-1646 J 1661 98 4.5 45
Show 18560-1637 J 1662 191 4.5 48
Show 18498-1655 TDT4316 333 45.1 57
Show 18496-1654 HWE 44 AB 298 2.0 59
Show 18496-1654 HWE 44 AC 308 36.4 59
Show 18496-1654 KNP 3 AD 200 22.2 59
Show 18516-1719 HU 255 166 1.4 60
Show 18528-1725 HU 257 341 2.1 63
Show 18487-1702 J 2235 AB 203 90.0 73
Show 18487-1702 J 2235 BC 5 6.6 75
Show 18517-1511 TDT1092 138 0.4 75
Show 18549-1733 RST3205 AB 300 0.5 76
Show 18549-1733 HJ 2843 AB,C 339 22.0 76
Show 18480-1647 HJ 2838 335 33.4 76
Show 18477-1633 RST4020 26 3.5 78
Show 18553-1738 HJ 2844 105 23.7 83
Show 18559-1735 HJ 2845 6 3.9 84
Show 18510-1747 HJ 2842 338 29.9 90
Show 18536-1454 J 1660 324 5.9 90
Show 18505-1501 J 529 353 7.5 91
Show 18494-1740 TDT1072 310 0.7 93
Show 18593-1658 RST3209 126 0.4 97
Show 18494-1750 HJ 2840 173 15.2 101
Show 18457-1624 J 1656 287 7.6 104
Show 18508-1446 J 2237 233 4.9 105
Show 18514-1441 RST4604 87 0.7 105
Show 18513-1438 J 2153 352 5.4 107
Show 18568-1451 HJ 5503 79 37.7 107
Show 18513-1435 J 2152 238 7.3 110
Show 18515-1434 J 2154 353 9.0 110
Show 19002-1704 GWP2801 AB 67 307.7 111
Show 18461-1529 HU 251 304 2.6 114
Show 18506-1813 RST3200 0.7 115
Show 19010-1613 HU 260 300 2.8 116
Show 18503-1812 TDT1080 134 0.9 116
Show 18505-1818 TDT1081 75 0.5 121
Show 18444-1623 HJ 2835 303 15.3 125
Show 18511-1421 RST4602 219 2.6 125
Show 18480-1435 CRC 31 234 7.6 130
Show 18500-1826 J 1658 59 8.4 131
Show 18480-1814 RST3198 154 0.4 133
Show 18442-1539 BRT 633 42 4.8 134
Show 18453-1509 BRT 594 110 2.2 135
Show 18480-1817 WSI 36 262 15.8 135

 
 
WDS 18530-1623 : COMPONENTS
 
 
  A
B pa=312.7°
sep=0.37"
 
 
18530-1623 A
 
 
Componente originario normalizzato AB Name HD 174801 Coord arcsec 2000 185300.44-162253.3 Mag 7.22
Spectral class B8/9II (blue-white) PmRA 4.00 PmDE -10.0 SAO 161933
HIP 92671 Tycho2 6281-01454-1 HD 174801 GC 25894
BD BD-16 5060
Tycho2
Tycho2 6281-01454-1 Pflag RAmdeg 283.25184082 DEmdeg -16.38146545
PmRA 3.0 PmDE -5.4 E RAmdeg 4 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.45 EpDEm 1991.18
Num 14 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.2
Q pmDE 1.1 BTmag 7.236 E BTmag 0.015 VTmag 7.046
E VTmag 0.010 Prox 999 TYC T HIP 92671
CCDM AB RAdeg 283.25183333 DEdeg -16.38145306 EpRA 1990 1.79
EpDE 1990 1.68 E RAdeg 3.8 E DEdeg 4.6 Posflg P
Corr 0.0
SAO
SAO 161933 DelFlag RA1950 PmRA1950 -0.0002
DE1950 PmDE1950 -0.023 Vmag 6.8 SpType B9
Double code Source 70 CatNum 25894 DM BD-16 5060
DMcomp BDsup HD 174801 M HD 0
GC 25894 RA1950rad 4.93109627 DE1950rad -0.2869993 PmRA2000 0
PmDE2000 -0.022
Hipparcos
Catalog H HIP 92671 Proxy H RAhms 18 53 00.44
DEdms -16 22 53.3 Vmag 7.01 VarFlag R Vmag H
RAdeg 283.252 DEdeg -16.3815 AstroRef A Plx 1.54
CCDM 18530-1623 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 314 Rho 0.367 HD 174801 BD BD-16 5060
CD CP Dm number -16 5060 VIred 0.15
SpType B8/B9II R SpType Coord arcsec 2000 185300.44-162253.3
Hipparcos 2
HIP 92671 Sn 15 So 3 Nc 2
RArad 4.9436772658 DErad -0.2859104449 Plx 1.8 PmRA 2.39
PmDE -5.83 E RArad 0.56 E DErad 0.37 E Plx 0.63
E pmRA 0.59 E pmDE 0.42 Hpmag 7.0733 E Hpmag 0.0013
SHp 0.009 VA 0 BV 0.171 E BV 0.009
VI 0.19
CCDM
Ccdm 18530-1623 RComp Comp A Note1
Note2 Discov num DRAs 0.41 DDEs 4.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.9 Sp B9 PmNote *
PmRA -1 PmDE -22 Dm number -16 5060 Cat1 BD
Name2 161933 Cat2 SAO HD 174801 M HD
ADS BDS M ADS BDS N IDS IDS 18472S1630A
HIC 92671
 
 
18530-1623 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 185300.42-162253.0 Mag 9.35 Calc delta mag 2.13
Calc coord yes
CCDM
Ccdm 18530-1623 RComp Comp B Note1
Note2 Discov num RST4022 DRAs DDEs
R dRAs Year 1937 Theta 318 Rho 0.6
Obs 4 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18472S1630B
HIC 92671