18016-2740 TDT 641 AB (HD 316945)

 
 
18h 01m 36.35s -27° 40' 04.9" P.A. 130.00 sep 1.9 mag 9.46,11.08 Sp A2
 
 
Coord 2000 18016-2740 Discov num TDT 641 Comp AB Coord arcsec 2000 18 01 36.35 -27 40 04.9
Date first 1991 Date last 1991 Obs 1
Pa first 130 Pa last 129.8 P.A. Now (θ) 129.8°
Sep first 1.9 Sep last 1.91 Sep. Now (ρ) 1.91"
Mag pri 9.46 Mag sec 11.08 delta mag (ΔM) 1.62 Spectral class A2 (white)
Pri motion ra +007 Sec motion ra +007
Pri motion dec -002 Sec motion dec -002
Notes
Nature of this double is uncertain.
 
 
18016-2740 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 316945 18 01 36 -27 40 05 TDT 641 AB 1991 1 130 1.9 9.46 11.08 1.62 <===
Show 18 01 36 -27 40 05 STN 38 AC 2015 9 87 6.3 9.46 11.50 2.04
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 316945 Constellation Sagittarius Tycho2 6850-02699-1 Gaia DR2 4062738315597854976
HD 316945
 
 
WDS 18016-2740 TDT 641 AB (HD 316945) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Stn1877 Ma j Stone, O. 1877PCinO...3....1S
Stn1877 Pub. Cincinnati Obs. #3, 1877
Stn1878 Ma - Stone, O. 1878PCinO...4....1.
Stn1878 Pub. Cincinnati Obs. #4, 1878
Stn1879 Ma j Stone, O. 1879PCinO...5....1S
Stn1879 Pub. Cincinnati Obs. #5, 1879
Stn1880A Ma - Stone, O. 1880Obs.....3..314G
Stn1880A cited by Gledhill (Obs 3, 314, 1880)
Stn1882 Ma - Stone, O. 1882PCinO...6....1S
Stn1882 Pub. Cincinnati Obs. #6, 1882
Stn1890 Ma j Stone, O. 1890PCinO..10....1.
Stn1890 Pub. Cincinnati Obs. #10, 1890
Stn1906A Ma - Stone, O. 1906MmRAS..56....1L
Stn1906A cited by Lewis (MemRAS 56, 1, 1906)
Stn1932A Ma - Stone, O. 1932QB821.A43......
Stn1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18016-2740 TDT 641 AB 1991 1 130 1.9 9.46 11.08 180136.35-274004.9

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WDS 18016-2740 TDT 641 AB (HD 316945) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18016-2740 TDT 641 AB (HD 316945) : MEASURES
 
 
No records found.

 
 
WDS 18016-2740 (HD 316945) : VIRTUAL EYEPIECE
 
 

18016-2740 TDT 641A mag 9.46 Sp A2 18016-2740 TDT 641B sep 1.8 P.A. 133.30 mag 11.08 18016-2740 STN  38C sep 5.6 P.A. 86.80 mag 11.5 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 18016-2740 (HD 316945) : ALADIN DSS IMAGE @ 18h 01m 36.35s -27° 40' 04.9"
 
 
 
 
WDS 18016-2740 TDT 641 AB (HD 316945) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18016-2740  TDT 641AB distance=0' 18020-2731  STN  40AB distance=11' 18020-2731  B  2850AC distance=11' 18004-2735  RST2016 distance=17' 18009-2726  RST2018 distance=18' 18029-2750  HDS2541Aa,Ab distance=20' 18029-2750  B  2428AB distance=20' 18018-2805  RST2020 distance=26' 18035-2738  TDT 660 distance=26' 18034-2754  BRT3056 distance=28' 17598-2801  RST2015 distance=33' 18028-2705  HLD  32AB distance=39' 18028-2705  FOX 218AC distance=39' 18032-2707  J  1592AB distance=40' 18032-2707  J  1592AC distance=40' 18021-2820  BRT3055 distance=41' 18045-2729  SKF2549 distance=41' 18007-2823  OCC9173 distance=45' 17592-2708  OCC 703Aa,Ab distance=46' 17592-2708  B   368AB distance=46' 17587-2808  TDT 608 distance=48' 18050-2806  J  1593 distance=52' 18051-2707  OCC  90 distance=57' 18050-2705  OCC  89 distance=58' 17581-2816  BRT3052 distance=59' 18035-2643  BRT3057 distance=63' 17597-2839  B   370 distance=64' 18005-2844  BRT3054 distance=66' 17598-2637  BRT3053 distance=67' 17567-2804  OCC 109 distance=70' 17592-2842  SKF2547 distance=70' 17570-2708  OCC 801 distance=70' 18060-2659  I  1017 distance=72' 18042-2846  BRT3058AB distance=75' 18042-2846  AAQ   4AC distance=75' 17562-2714  I  1346 distance=77' 17589-2850  B  2848 distance=78' 18053-2841  B   374 distance=79' 17557-2733  KPP2761 distance=79' 18070-2706  OCC  88 distance=80' 17573-2645  SKF2527 distance=80' 17557-2805  I   109 distance=82' 18028-2617  B   373 distance=85' 17596-2903  SKF2548 distance=87' 18016-2612  TDT 640 distance=89' 18008-2611  I  1016 distance=90' 18014-2911  RST2019 distance=92' 18086-2752  BU  244Ba,Bb distance=94' 18086-2752  BU  244AB distance=94' 17586-2909  RST2011 distance=98' 18024-2601  B   372 distance=100' 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 18016-2740 TDT 641 AB 130 1.9
Show 18016-2740 STN 38 AC 87 6.3
Show 18020-2731 STN 40 AB 161 2.4 11
Show 18020-2731 B 2850 AC 50 5.8 11
Show 18004-2735 RST2016 121 0.9 17
Show 18009-2726 RST2018 343 1.8 18
Show 18029-2750 HDS2541 Aa,Ab 38 0.3 20
Show 18029-2750 B 2428 AB 42 9.6 20
Show 18018-2805 RST2020 171 3.4 26
Show 18035-2738 TDT 660 208 0.7 26
Show 18034-2754 BRT3056 171 4.5 28
Show 17598-2801 RST2015 197 0.8 33
Show 18028-2705 HLD 32 AB 101 5.2 39
Show 18028-2705 FOX 218 AC 67 41.9 39
Show 18032-2707 J 1592 AB 351 8.0 40
Show 18032-2707 J 1592 AC 12 21.2 40
Show 18021-2820 BRT3055 48 4.9 41
Show 18045-2729 SKF2549 239 5.5 41
Show 18007-2823 OCC9173 -1 0.0 45
Show 17592-2708 OCC 703 Aa,Ab -1 0.1 46
Show 17592-2708 B 368 AB 81 3.6 46
Show 17587-2808 TDT 608 245 1.3 48
Show 18050-2806 J 1593 149 9.1 52
Show 18051-2707 OCC 90 -1 0.1 57
Show 18050-2705 OCC 89 -1 0.1 58
Show 17581-2816 BRT3052 77 5.2 59
Show 18035-2643 BRT3057 184 4.3 63
Show 17597-2839 B 370 70 2.2 64
Show 18005-2844 BRT3054 184 3.0 66
Show 17598-2637 BRT3053 154 4.3 67
Show 17567-2804 OCC 109 -1 0.1 70
Show 17592-2842 SKF2547 93 5.6 70
Show 17570-2708 OCC 801 -1 0.1 70
Show 18060-2659 I 1017 84 2.1 72
Show 18042-2846 BRT3058 AB 63 4.8 75
Show 18042-2846 AAQ 4 AC 37 5.8 75
Show 17562-2714 I 1346 204 0.8 77
Show 17589-2850 B 2848 227 4.9 78
Show 18053-2841 B 374 159 3.7 79
Show 17557-2733 KPP2761 9 3.4 79
Show 18070-2706 OCC 88 -1 0.1 80
Show 17573-2645 SKF2527 322 4.3 80
Show 17557-2805 I 109 240 5.4 82
Show 18028-2617 B 373 325 5.8 85
Show 17596-2903 SKF2548 74 7.7 87
Show 18016-2612 TDT 640 316 0.4 89
Show 18008-2611 I 1016 26 1.6 90
Show 18014-2911 RST2019 165 0.5 92
Show 18086-2752 BU 244 Ba,Bb 154 0.1 94
Show 18086-2752 BU 244 AB 270 2.2 94
Show 17586-2909 RST2011 189 4.1 98

 
 
WDS 18016-2740 : COMPONENTS
 
 
  A B
B pa=133.3°
sep=1.78"
 
C pa=86.8°
sep=5.58"
pa=70.3°
sep=4.54"
 
 
18016-2740 A
 
 
Name HD 316945 Coord arcsec 2000 180136.35-274004.9 Mag 9.46 Spectral class A2 (white)
PmRA 7.00 PmDE -2.0 Tycho2 6850-02699-1 HD 316945
Tycho2
Tycho2 6850-02699-1 Pflag RAmdeg 270.40145679 DEmdeg -27.66803134
PmRA 6.6 PmDE -1.7 E RAmdeg 12 E DEmdeg 16
E pmRA 2.5 E pmDE 2.2 EpRAm 1991.54 EpDEm 1991.23
Num 3 Q RAmdeg 0.5 Q DEmdeg 1.0 Q pmRA 0.5
Q pmDE 1.0 BTmag 9.592 E BTmag 0.023 VTmag 9.448
E VTmag 0.024 Prox 616 TYC T HIP
CCDM RAdeg 270.40143944 DEdeg -27.66802750 EpRA 1990 1.83
EpDE 1990 1.88 E RAdeg 11.5 E DEdeg 16.1 Posflg
Corr 0.1
 
 
18016-2740 B
 
 
Coord arcsec 2000 180136.45-274006.1 Mag 11.08 PmRA 7.00 PmDE -2.0
Calc delta mag 1.62 Calc coord yes
 
 
18016-2740 C
 
 
Coord arcsec 2000 180136.77-274004.6 Mag 11.5 PmRA 42.00 PmDE 19.0
Calc delta mag 2.04 Calc coord yes