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Doubles in session


Current system
18197-4542
CHR 148
HD 167954


Nearby doubles
22' : 18192-4521
I 1360

26' : 18200-4517
KPP1486

27' : 18202-4608
RST 978

28' : 18199-4514
B 2442

34' : 18222-4522
BRT1047

35' : 18229-4542
BRT1048AB

37' : 18199-4506
CPO 581

42' : 18162-4601
HJ 5034

46' : 18197-4627
TDT 797

46' : 18240-4544
NSN 485

47' : 18197-4628
B 1886

49' : 18202-4454
BRT1044

53' : 18166-4502
BRT1039

56' : 18248-4556
HJ 5042

58' : 18229-4456
BRT1049

60' : 18232-4629
CPO 584

61' : 18183-4444
BRT1041

66' : 18260-4541
LDS 638

66' : 18164-4638
SWR 241

69' : 18220-4437
CPO9264

70' : 18146-4625
CPO 578

72' : 18203-4654
RST 977

72' : 18145-4629
CPO 577

73' : 18176-4433
SKF1146

73' : 18174-4434
SKF1021

73' : 18222-4434
CPO9265



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.

18197-4542 CHR 148 (HD 167954)

 
 
18h 19m 41.35s -45° 41' 55.8" P.A. 52.00 sep 0.3 mag 6.85, Sp F7V dist. 39.75 pc (129.66 l.y.)
 
 
Coord 2000 18197-4542 Discov num CHR 148 Comp Coord arcsec 2000 18 19 41.35 -45 41 55.8
Date first 1989 Date last 1989 Obs 1
Pa first 52 Pa last 51.5 P.A. Now (θ) 51.5°
Sep first 0.3 Sep last 0.306 Sep. Now (ρ) 0.306"
Mag pri 6.85 Mag sec delta mag (ΔM) Spectral class F7V (yellow-white)
Pri motion ra -076 Sec motion ra
Pri motion dec -143 Sec motion dec
Notes N X O (See Notes, Dubious double, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 167954 Constellation Telescopium SAO 228906 HIP 89808
Tycho2 8358-00989-1 Gaia DR2 6708063202046601344 HD 167954 GC 24981
GL Wo 9624 CD CD-4512390 CP CP-45 9231 Distance 39.75
Distance ly 129.66
 
 
ORBITAL ELEMENTS
 
 
Period (P)120.0074d Periastron (T)30003.2812d (1941.022y) Semi-major axis (a)3.95m± 0.7
Eccentricity (e)0.4282 Inclination (i)85.81°± 16.32 Longitude of periastron (ω)134.41°
Node (Ω)188.34°± 15.09 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 184.1 0.004
2001-01-01 185.0 0.004
2002-01-01 185.8 0.005
2003-01-01 186.5 0.005
2004-01-01 187.1 0.005
2005-01-01 187.8 0.005
2006-01-01 188.5 0.005
2007-01-01 189.4 0.004
2008-01-01 190.7 0.003
2009-01-01 193.1 0.002
2010-01-01 204.4 0.001
2011-01-01 358.4 0.001
2012-01-01 6.4 0.002
2013-01-01 9.3 0.003
2014-01-01 11.8 0.002
2015-01-01 15.3 0.002
2016-01-01 22.6 0.001
2017-01-01 54.3
2018-01-01 153.6 0.001
2019-01-01 172.9 0.001
2020-01-01 178.5 0.002
2021-01-01 181.2 0.003
2022-01-01 182.9 0.003
2023-01-01 184.1 0.004
2024-01-01 185.0 0.004
2025-01-01 185.8 0.005
2026-01-01 186.5 0.005
2027-01-01 187.1 0.005
2028-01-01 187.8 0.005
2029-01-01 188.5 0.005
2030-01-01 189.4 0.004


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


 
  


wds18197-4542r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18197-4542 CHR 148 (HD 167954) : NOTES
 
 
discov_num notes refcode
CHR 148 HD 167954 is a SB, with P = 120d (Bopp et al. 1970 MNRAS, 147, 355).
With rho = 0".031, the speckle pair is probably not the SB. McA1990
Hipparcos astrometric solution adopted some elements from the orbit of HIP1997d
Bopp et al. (1970). Evn1970
 
 
REFERENCES
 
 
refcode metd author reference
Evn1970 - Bopp, B.W., Evans, D.S., Laing, J.D., & Deeming, T.J. 1970MNRAS.147..355B
Evn1970 MNRAS 147, 355, 1970
HIP1997d orb - Hipparcos 1997yCat.1239....0E
HIP1997d Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d (DMSA/O Orbital Solutions)
McA1990 Sc j McAlister, H.A., Hartkopf, & Franz, O.G. 1990AJ.....99..965M
McA1990 AJ 99, 965, 1990
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18197-4542 CHR 148 1989 1 52 0.3 6.85   F7V NO 181941.35-454155.8

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

 
 
WDS 18197-4542 CHR 148 (HD 167954) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18197-4542 CHR 148 (HD 167954) : MEASURES
 
 
No records found.

 
 
WDS 18197-4542 (HD 167954) : VIRTUAL EYEPIECE
 
 

18197-4542 CHR 148A mag 6.85 Sp F7V 18197-4542 CHR 148B sep 0.2 P.A. 41.30 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 18197-4542 (HD 167954) : ALADIN DSS IMAGE @ 18h 19m 41.35s -45° 41' 55.8"
 
 
 
 
WDS 18197-4542 CHR 148 (HD 167954) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18197-4542 CHR 148 distance=0' 18192-4521 I 1360 distance=22' 18200-4517 KPP1486 distance=26' 18202-4608 RST 978 distance=27' 18199-4514 B 2442 distance=28' 18222-4522 BRT1047 distance=34' 18229-4542 BRT1048AB distance=35' 18199-4506 CPO 581 distance=37' 18162-4601 HJ 5034 distance=42' 18197-4627 TDT 797 distance=46' 18240-4544 NSN 485 distance=46' 18197-4628 B 1886 distance=47' 18202-4454 BRT1044 distance=49' 18166-4502 BRT1039 distance=53' 18248-4556 HJ 5042 distance=56' 18229-4456 BRT1049 distance=58' 18232-4629 CPO 584 distance=60' 18183-4444 BRT1041 distance=61' 18260-4541 LDS 638 distance=66' 18164-4638 SWR 241 distance=66' 18220-4437 CPO9264 distance=69' 18146-4625 CPO 578 distance=70' 18203-4654 RST 977 distance=72' 18145-4629 CPO 577 distance=72' 18176-4433 SKF1146 distance=73' 18174-4434 SKF1021 distance=73' 18222-4434 CPO9265 distance=73' 18127-4542 B 2433 distance=74' 18195-4428 CPO 580 distance=75' 18225-4652 CPO 583 distance=76' 18124-4531 CPO 575 distance=78' 18124-4532 CPO 576 distance=78' 18270-4558 WFC 207 distance=78' 18153-4650 B 1882 distance=82' 18120-4600 ALD 91 distance=83' 18261-4633 BRT1052AB distance=84' 18213-4416 BRT1046 distance=88' 18205-4711 CPO9263 distance=90' 18112-4557 HDO 286 distance=90' 18278-4507 BRT1057 distance=92' 18218-4413 I 1363 distance=92' 18117-4500 CPO 574AC distance=94' 18117-4500 CPO 574BC distance=94' 18158-4707 BRT1038 distance=95' 18136-4430 I 1355 distance=97' 18210-4407 TDT 813 distance=97' 18210-4406 DON 890 distance=97' 18290-4541 SKF1084 distance=98' 18259-4659 UC 3579 distance=101' 18243-4407 DUN 221 distance=108' 18200-4354 HDS2591 distance=108' 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 18197-4542 CHR 148 52 0.3
Show 18192-4521 I 1360 193 0.5 22
Show 18200-4517 KPP1486 266 11.2 26
Show 18202-4608 RST 978 216 4.6 27
Show 18199-4514 B 2442 250 11.7 28
Show 18222-4522 BRT1047 136 6.1 34
Show 18229-4542 BRT1048 AB 202 2.8 35
Show 18199-4506 CPO 581 185 3.5 37
Show 18162-4601 HJ 5034 100 2.4 42
Show 18197-4627 TDT 797 230 2.4 46
Show 18240-4544 NSN 485 109 1.8 46
Show 18197-4628 B 1886 286 0.9 47
Show 18202-4454 BRT1044 143 3.9 49
Show 18166-4502 BRT1039 121 3.6 53
Show 18248-4556 HJ 5042 176 16.0 56
Show 18229-4456 BRT1049 121 4.2 58
Show 18232-4629 CPO 584 246 5.1 60
Show 18183-4444 BRT1041 175 3.5 61
Show 18260-4541 LDS 638 259 14.6 66
Show 18164-4638 SWR 241 283 8.1 66
Show 18220-4437 CPO9264 179 5.8 69
Show 18146-4625 CPO 578 261 5.7 70
Show 18203-4654 RST 977 96 1.8 72
Show 18145-4629 CPO 577 200 5.6 72
Show 18176-4433 SKF1146 152 40.8 73
Show 18174-4434 SKF1021 11 46.2 73
Show 18222-4434 CPO9265 204 4.9 73
Show 18127-4542 B 2433 10 15.6 74
Show 18195-4428 CPO 580 51 3.3 75
Show 18225-4652 CPO 583 205 5.6 76
Show 18124-4531 CPO 575 30 4.1 78
Show 18124-4532 CPO 576 208 6.0 78
Show 18270-4558 WFC 207 41 115.9 78
Show 18153-4650 B 1882 228 1.4 82
Show 18120-4600 ALD 91 255 1.7 83
Show 18261-4633 BRT1052 AB 72 3.5 84
Show 18213-4416 BRT1046 311 5.1 88
Show 18205-4711 CPO9263 258 4.0 90
Show 18112-4557 HDO 286 230 16.4 90
Show 18278-4507 BRT1057 44 7.2 92
Show 18218-4413 I 1363 297 0.8 92
Show 18117-4500 CPO 574 AC 189 3.9 94
Show 18117-4500 CPO 574 BC 57 7.5 94
Show 18158-4707 BRT1038 82 5.8 95
Show 18136-4430 I 1355 221 0.4 97
Show 18210-4407 TDT 813 145 2.1 97
Show 18210-4406 DON 890 235 0.9 97
Show 18290-4541 SKF1084 251 13.9 98
Show 18259-4659 UC 3579 18 35.1 101
Show 18243-4407 DUN 221 162 74.0 108
Show 18200-4354 HDS2591 27 0.3 108

 
 
WDS 18197-4542 : COMPONENTS
 
 
  A
B pa=41.3°
sep=0.25"
 
 
18197-4542 A
 
 
Componente originario normalizzato AB Name HD 167954 Coord arcsec 2000 181941.35-454155.8 Mag 6.85
Spectral class F7V (yellow-white) PmRA -76.00 PmDE -143.0 SAO 228906
HIP 89808 Tycho2 8358-00989-1 HD 167954 GC 24981
CD CD-4512390 CP CP-45 9231
Tycho2
Tycho2 8358-00989-1 Pflag RAmdeg 274.92202995 DEmdeg -45.69915501
PmRA -76.9 PmDE -136.9 E RAmdeg 4 E DEmdeg 5
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.36 EpDEm 1991.18
Num 11 Q RAmdeg 1.2 Q DEmdeg 1.4 Q pmRA 1.3
Q pmDE 1.4 BTmag 7.483 E BTmag 0.015 VTmag 6.893
E VTmag 0.010 Prox 999 TYC T HIP 89808
CCDM RAdeg 274.92228278 DEdeg -45.69884083 EpRA 1990 1.72
EpDE 1990 1.74 E RAdeg 4.0 E DEdeg 4.5 Posflg
Corr -0.1
SAO
SAO 228906 DelFlag RA1950 PmRA1950 -0.0052
DE1950 PmDE1950 -0.11 Vmag 7 SpType F8
Double code Source 70 CatNum 24981 DM CD-4512390
DMcomp BDsup HD 167954 M HD 0
GC 24981 RA1950rad 4.78217761 DE1950rad -0.79793943 PmRA2000 -0.0052
PmDE2000 -0.112
Hipparcos
Catalog H HIP 89808 Proxy RAhms 18 19 41.35
DEdms -45 41 55.8 Vmag 6.84 VarFlag R Vmag G
RAdeg 274.922 DEdeg -45.6988 AstroRef + Plx 26.41
CCDM N CCDM Nsys Ncomp 1
MultFlag O Source Qual M HIP
Theta Rho HD 167954 BD
CD CD-4512390 CP CP-45 9231 Dm number -4512390 VIred 0.61
SpType F7V R SpType Coord arcsec 2000 181941.35-454155.8
Hipparcos 2
HIP 89808 Sn 75 So 4 Nc 1
RArad 4.7982993402 DErad -0.7975949165 Plx 25.16 PmRA -78.93
PmDE -136.01 E RArad 0.58 E DErad 0.39 E Plx 0.67
E pmRA 0.7 E pmDE 0.42 Hpmag 6.9628 E Hpmag 0.0011
SHp 0.009 VA 0 BV 0.533 E BV 0.002
VI 0.61
CCDM
Ccdm 18197-4542 RComp Comp A Note1
Note2 Discov num DRAs -0.68 DDEs 3.0
R dRAs 81 Year Theta Rho
Obs 2 Vmag Sp PmNote @
PmRA -72 PmDE -137 Dm number -4512390 Cat1 CD
Name2 228906 Cat2 SAO HD 167954 M HD
ADS BDS M ADS BDS N IDS W IDS 18197-4542A
HIC 89808
 
 
18197-4542 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 181941.37-454155.6 Calc delta mag 6.85 Calc coord yes
CCDM
Ccdm 18197-4542 RComp Comp B Note1
Note2 Discov num CHR 148 DRAs DDEs
R dRAs Year 1989 Theta 52 Rho 0.3
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS W IDS 18197-4542B
HIC 89808