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Doubles in session


Current system
18096+0400
STF 2281 AB
73 Oph


Nearby doubles
6' : 18097+0354
BAL2478

13' : 18088+0404
BAL2915

13' : 18098+0412
BAL2916

16' : 18105+0354
DOO 70

19' : 18106+0349
FOX 220

24' : 18107+0417
BAL2917

28' : 18081+0343
BAL2474

33' : 18080+0337
ARY 2AB

36' : 18106+0327
BAL2481

40' : 18084+0325
BAL2475

46' : 18124+0415
A 353

46' : 18090+0315
BAL2477

48' : 18090+0447
TDT 710

49' : 18128+0356
J 3270

51' : 18077+0317
AG 216

53' : 18099+0307
BU 637AB

54' : 18082+0449
BAL2914

55' : 18065+0331
SLE 84

55' : 18076+0314
SLE 85

59' : 18122+0442
BAL2919

60' : 18125+0440
BAL2920

64' : 18060+0434
STTA165AB

67' : 18057+0326
BAL2472

67' : 18122+0453
BAL2918

68' : 18122+0455
HEI9010

68' : 18066+0452
BAL2913



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.

18096+0400 STF 2281 AB (73 Oph)

 
 
18h 09m 33.86s +03° 59' 35.8" P.A. 282.00 sep 0.8 mag 5.97,7.52 Sp F2V dist. 54.79 pc (178.72 l.y.)
 
 
Coord 2000 18096+0400 Discov num STF2281 Comp AB Coord arcsec 2000 18 09 33.86 +03 59 35.8
Date first 1783 Date last 2021 Obs 429
Pa first 267 Pa last 281.8 P.A. Now (θ) 279.2°
Sep first 0.9 Sep last 0.791 Sep. Now (ρ) 0.803"
Mag pri 5.97 Mag sec 7.52 delta mag (ΔM) 1.55 Spectral class F2V (yellow-white)
Pri motion ra +046 Sec motion ra +046
Pri motion dec -007 Sec motion dec -007
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18096+0400 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 73 Oph 123187 18 09 34 +03 59 36 STF 2281 AB 2021 429 282 0.8 5.97 7.52 1.55 Y <===
Show 123187 18 09 34 +03 59 36 STF 2281 AB,C 2002 5 194 68.0 5.77 12.60 6.83
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 73 Oph Var name NSV10287 Oph Constellation Ophiuchus SAO 123187
HIP 88964 Tycho2 0439-01445-1 Gaia DR2 4470319819874781184 HD 166233
HR 6795 GC 24754 ADS 11111 BD BD+03 3610
Flamsteed 73 Ophiuchi Flamsteed name 73 Oph Distance 54.79 Distance ly 178.72
 
 
ORBITAL ELEMENTS
 
 
Period (P)294y Periastron (T)1912.8y Semi-major axis (a)1.19a
Eccentricity (e)0.61 Inclination (i)103° Longitude of periastron (ω)307°
Node (Ω)71° Notesn ReferenceSod1999
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 296.2 0.520
2001 295.1 0.532
2002 294.0 0.544
2003 293.0 0.556
2004 292.0 0.568
2005 291.1 0.580
2006 290.2 0.592
2007 289.3 0.605
2008 288.5 0.617
2009 287.7 0.630
2010 287.0 0.642
2011 286.2 0.654
2012 285.5 0.667
2013 284.8 0.679
2014 284.2 0.692
2015 283.5 0.704
2016 282.9 0.717
2017 282.3 0.729
2018 281.8 0.742
2019 281.2 0.754
2020 280.7 0.766
2021 280.2 0.779
2022 279.7 0.791
2023 279.2 0.803
2024 278.7 0.816
2025 278.2 0.828
2026 277.8 0.840
2027 277.4 0.852
2028 276.9 0.864
2029 276.5 0.876
2030 276.1 0.888


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds18096%2B0400a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18096+0400 STF 2281 AB (73 Oph) : NOTES
 
 
discov_num notes refcode
STF2281 73 Oph. AB: H 1 87. MEv2010
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 3.21 +/- 1.75, 3.00, and 1.35 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18096+0400 STF2281 AB 2004 387 293 0.6 5.97 7.52 F2V NOD 180933.86+035935.8
18096+0400 STF2281 AB 2009 393 289 0.6 5.97 7.52 F2V NOD 180933.86+035935.8
18096+0400 STF2281 AB 2010 401 288 0.6 5.97 7.52 F2V NOD 180933.86+035935.8
18096+0400 STF2281 AB 2011 403 287 0.7 5.97 7.52 F2V NOD 180933.86+035935.8
18096+0400 STF2281 AB 2014 402 275 0.6 5.97 7.52 F2V NOD 180933.86+035935.8
18096+0400 STF2281 AB 2016 406 285 0.7 5.97 7.52 F2V NO 180933.86+035935.8
18096+0400 STF2281 AB 2017 408 284 0.7 5.97 7.52 F2V NO 180933.86+035935.8
18096+0400 STF2281 AB 2018 409 284 0.7 5.97 7.52 F2V NO 180933.86+035935.8
18096+0400 STF2281 AB 2019 420 283 0.8 5.97 7.52 F2V NO 180933.86+035935.8
18096+0400 STF2281 AB 2021 427 282 0.8 5.97 7.52 F2V NO 180933.86+035935.8

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

 
 
WDS 18096+0400 STF 2281 AB (73 Oph) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18096+0400 STF 2281 AB (73 Oph) : MEASURES
 
 
No records found.

 
 
WDS 18096+0400 (73 Oph) : VIRTUAL EYEPIECE
 
 

18096+0400 STF2281A mag 5.97 Sp F2V 18096+0400 STF2281B sep 0.8 P.A. 281.80 mag 7.52 18096+0400 STF2281C sep 68.0 P.A. 193.70 mag 12.6 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 18096+0400 (73 Oph) : ALADIN DSS IMAGE @ 18h 09m 33.86s +03° 59' 35.8"
 
 
 
 
WDS 18096+0400 STF 2281 AB (73 Oph) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18096+0400 STF2281AB distance=0' 18097+0354 BAL2478 distance=6' 18088+0404 BAL2915 distance=13' 18098+0412 BAL2916 distance=13' 18105+0354 DOO 70 distance=16' 18106+0349 FOX 220 distance=19' 18107+0417 BAL2917 distance=24' 18081+0343 BAL2474 distance=28' 18080+0337 ARY 2AB distance=33' 18080+0337 ARY 2AC distance=33' 18106+0327 BAL2481 distance=36' 18084+0325 BAL2475 distance=40' 18124+0415 A 353 distance=46' 18090+0315 BAL2477 distance=46' 18090+0447 TDT 710 distance=48' 18128+0356 J 3270 distance=49' 18077+0317 AG 216 distance=51' 18099+0307 BU 637AB distance=53' 18099+0307 BU 637AC distance=53' 18099+0307 YSC 132Aa,Ab distance=53' 18082+0449 BAL2914 distance=54' 18065+0331 SLE 84 distance=55' 18076+0314 SLE 85 distance=55' 18122+0442 BAL2919 distance=59' 18125+0440 BAL2920 distance=60' 18060+0434 STTA165AB distance=64' 18060+0434 GUI 20AC distance=64' 18057+0326 BAL2472 distance=67' 18122+0453 BAL2918 distance=67' 18122+0455 HEI9010 distance=68' 18066+0452 BAL2913 distance=68' 18139+0332 TDT 750 distance=71' 18056+0439 SKF2127 distance=72' 18121+0258 GRV 231 distance=72' 18097+0247 BAL1955 distance=73' 18127+0456 BAL2921 distance=74' 18144+0415 SLE 143 distance=74' 18059+0449 BAL2911 distance=74' 18144+0347 SLE 144 distance=75' 18125+0501 HEI 896 distance=75' 18060+0455 BAL2912 distance=77' 18048+0332 J 460 distance=77' 18055+0311 HEI 257 distance=79' 18147+0342 BAL2483 distance=79' 18146+0422 BAL2922AB distance=80' 18146+0422 BAL2922AC distance=80' 18146+0422 BAL2922BC distance=80' 18044+0337 A 2257 distance=82' 18044+0329 STF2266AB distance=84' 18044+0329 STF2266AC distance=84' 18049+0311 BAL2471 distance=86' 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 18096+0400 STF2281 AB 282 0.8
Show 18096+0400 STF2281 AB,C 194 68.0
Show 18097+0354 BAL2478 108 11.9 6
Show 18088+0404 BAL2915 166 20.3 13
Show 18098+0412 BAL2916 122 6.6 13
Show 18105+0354 DOO 70 135 7.7 16
Show 18106+0349 FOX 220 74 6.0 19
Show 18107+0417 BAL2917 258 19.7 24
Show 18081+0343 BAL2474 280 15.8 28
Show 18080+0337 ARY 2 AB 359 92.3 33
Show 18080+0337 ARY 2 AC 54 116.2 33
Show 18106+0327 BAL2481 108 10.7 36
Show 18084+0325 BAL2475 88 5.5 40
Show 18124+0415 A 353 17 1.6 46
Show 18090+0315 BAL2477 162 18.8 46
Show 18090+0447 TDT 710 274 1.1 48
Show 18128+0356 J 3270 232 4.8 49
Show 18077+0317 AG 216 91 2.4 51
Show 18099+0307 BU 637 AB 191 7.2 53
Show 18099+0307 BU 637 AC 245 98.2 53
Show 18099+0307 YSC 132 Aa,Ab 357 0.0 53
Show 18082+0449 BAL2914 329 8.9 54
Show 18065+0331 SLE 84 179 20.3 55
Show 18076+0314 SLE 85 181 11.3 55
Show 18122+0442 BAL2919 329 6.1 59
Show 18125+0440 BAL2920 1 7.7 60
Show 18060+0434 STTA165 AB 141 66.8 64
Show 18060+0434 GUI 20 AC 245 1.0 64
Show 18057+0326 BAL2472 85 3.6 67
Show 18122+0453 BAL2918 54 8.1 67
Show 18122+0455 HEI9010 123 6.1 68
Show 18066+0452 BAL2913 14 12.4 68
Show 18139+0332 TDT 750 97 0.7 71
Show 18056+0439 SKF2127 7 15.1 72
Show 18121+0258 GRV 231 181 50.7 72
Show 18097+0247 BAL1955 174 28.4 73
Show 18127+0456 BAL2921 1 19.5 74
Show 18144+0415 SLE 143 41 15.2 74
Show 18059+0449 BAL2911 255 3.0 74
Show 18144+0347 SLE 144 221 32.7 75
Show 18125+0501 HEI 896 202 2.6 75
Show 18060+0455 BAL2912 187 3.1 77
Show 18048+0332 J 460 86 2.3 77
Show 18055+0311 HEI 257 331 1.7 79
Show 18147+0342 BAL2483 195 12.8 79
Show 18146+0422 BAL2922 AB 120 10.7 80
Show 18146+0422 BAL2922 AC 76 60.8 80
Show 18146+0422 BAL2922 BC 104 49.2 80
Show 18044+0337 A 2257 36 0.2 82
Show 18044+0329 STF2266 AB 187 8.7 84
Show 18044+0329 STF2266 AC 202 50.8 84

 
 
WDS 18096+0400 : COMPONENTS
 
 
  A B
B pa=281.8°
sep=0.79"
 
C pa=193.7°
sep=68.02"
pa=193.0°
sep=68.00"
 
 
18096+0400 A
 
 
Name 73 Oph Coord arcsec 2000 180933.86+035935.8 Mag 5.97 Spectral class F2V (yellow-white)
PmRA 46.00 PmDE -7.0 SAO 123187 HIP 88964
Tycho2 0439-01445-1 HD 166233 HR 6795 GC 24754
BD BD+03 3610 Flamsteed 73 Ophiuchi Flamsteed name 73 Oph
Tycho2
Tycho2 0439-01445-1 Pflag RAmdeg 272.39119409 DEmdeg 3.99328550
PmRA 46.2 PmDE -7.0 E RAmdeg 4 E DEmdeg 4
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.62 EpDEm 1991.56
Num 14 Q RAmdeg 1.5 Q DEmdeg 1.8 Q pmRA 1.6
Q pmDE 1.7 BTmag 6.154 E BTmag 0.015 VTmag 5.766
E VTmag 0.010 Prox 999 TYC T HIP 88964
CCDM AB RAdeg 272.39108861 DEdeg 3.99330139 EpRA 1990 1.82
EpDE 1990 1.76 E RAdeg 3.7 E DEdeg 4.1 Posflg P
Corr 0.0
SAO
SAO 123187 DelFlag RA1950 PmRA1950 0.0024
DE1950 PmDE1950 -0.007 Vmag 5.7 SpType F2
Double code Source 70 CatNum 24754 DM BD+03 3610
DMcomp BDsup HD 166233 M HD 0
GC 24754 RA1950rad 4.74326624 DE1950rad 0.06952184 PmRA2000 0.0026
PmDE2000 -0.007
Hipparcos
Catalog H HIP 88964 Proxy H RAhms 18 09 33.86
DEdms +03 59 35.8 Vmag 5.71 VarFlag R Vmag H
RAdeg 272.391 DEdeg 3.99329 AstroRef A Plx 19.62
CCDM 18096+0359 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 310 Rho 0.427 HD 166233 BD BD+03 3610
CD CP Dm number +03 3610 VIred 0.42
SpType F2V R SpType Coord arcsec 2000 180933.86+035935.8
Hipparcos 2
HIP 88964 Sn 15 So 3 Nc 2
RArad 4.7541215573 DErad 0.0696959991 Plx 18.25 PmRA 48.88
PmDE -2.96 E RArad 0.53 E DErad 0.42 E Plx 0.6
E pmRA 0.65 E pmDE 0.5 Hpmag 5.7922 E Hpmag 0.0015
SHp 0.008 VA 0 BV 0.363 E BV 0.003
VI 0.42
 
 
18096+0400 B
 
 
Coord arcsec 2000 180933.81+035936.0 Mag 7.52 PmRA 46.00 PmDE -7.0
Calc delta mag 1.55 Calc coord yes
 
 
18096+0400 C
 
 
Coord arcsec 2000 180932.79+035829.7 Mag 12.6 PmRA 6.00 PmDE -5.0
Calc delta mag 6.63 Calc coord yes