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Current system
08369-7857
KOH 79 AB


Nearby doubles
13' : 08413-7858
BNK 3AB

15' : 08416-7904
BNK 4

17' : 08312-7857
TDS5898

18' : 08424-7904
BNK 5

20' : 08431-7905
BNK 6

21' : 08433-7905
BNK 8AB

25' : 08445-7850
BNK 10

32' : 08479-7855
BNK 11

34' : 08320-7824
TOI1057

45' : 08403-7940
NSN 251

45' : 08226-7840
RST2561AB

47' : 08489-7929
UC 1716

51' : 08458-7941
RST2591

75' : 08251-8004
TDS5812

78' : 08535-7959
KPP 841

83' : 08336-8019
KPP2875

90' : 08208-7742
I 800

91' : 08515-8018
LDS 244AB

101' : 08206-7729
I 799

108' : 08506-7717
HJ 4163

112' : 08429-7707
HDS1253AB

122' : 08323-7656
TOK 123

123' : 08534-7706
TSN 23

123' : 08243-8055
KPP2874

124' : 08181-7708
UC 1660

133' : 08185-8101
KPP3744



Selections
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

08369-7857 KOH 79 AB

 
 
08h 36m 56.24s -78° 56' 45.5" P.A. 54.00 sep 0.1 mag 10.40,10.50 Sp K4Ve
 
 
Coord 2000 08369-7857 Discov num KOH  79 Comp AB Coord arcsec 2000 08 36 56.24 -78 56 45.5
Date first 1996 Date last 2020 Obs 20
Pa first 16 Pa last 54.2 P.A. Now (θ) 54.2°
Sep first 0.1 Sep last 0.086 Sep. Now (ρ) 0.086"
Mag pri 10.40 Mag sec 10.50 delta mag (ΔM) 0.1 Spectral class K4Ve (yellow-orange)
Pri motion ra -030 Sec motion ra
Pri motion dec +028 Sec motion dec
Notes N O W R (See Notes, Orbital solution, , Red magnitudes)
This double is physical.
 
 
08369-7857 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 08 36 56 -78 56 46 KOH 79 AB 2020 20 54 0.1 10.40 10.50 0.10 Y <===
Show 08 36 56 -78 56 46 KOH 79 AB,C 2004 5 14 8.6 10.50 16.40 5.90
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Chamaeleon Tycho2 9402-00921-1 Gaia DR2 5209082129256747008
 
 
ORBITAL ELEMENTS
 
 
Period (P)77.1y± 8.9 Periastron (T)1996.4y± 1.5 Semi-major axis (a)0.2441a± 0.0207
Eccentricity (e)0.291± 0.052 Inclination (i)106.2°± 1.5 Longitude of periastron (ω)320.7°± 11.3
Node (Ω)182°± 1.3 Notesn ReferenceTok2016e
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 184.3 0.177
2001 182.0 0.182
2002 179.8 0.185
2003 177.6 0.185
2004 175.4 0.183
2005 173.1 0.178
2006 170.7 0.172
2007 168.1 0.165
2008 165.2 0.156
2009 161.9 0.146
2010 158.2 0.135
2011 153.8 0.124
2012 148.5 0.113
2013 142.1 0.103
2014 134.4 0.093
2015 125.0 0.085
2016 113.9 0.079
2017 101.6 0.076
2018 88.8 0.077
2019 76.8 0.081
2020 66.1 0.087
2021 57.2 0.096
2022 49.9 0.106
2023 44.0 0.118
2024 39.1 0.129
2025 35.0 0.142
2026 31.6 0.154
2027 28.7 0.166
2028 26.2 0.178
2029 24.0 0.190
2030 22.1 0.201


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


 
  


wds08369-7857c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 08369-7857 KOH 79 AB : NOTES
 
 
discov_num notes refcode
KOH 79 KOH 80. EG Cha. Wide pair is likely a chance alignment. Bnk2006
AB: Koehler & Petr-Gotzens (2002) calculate two possible orbital Koh2002
solutions. The short-period solution gives a semi-major axis of 15.5au
and a mass sum of 2.1 Msun; the longer-period solution gives 37.6au
and 2.3 Msun.
 
 
REFERENCES
 
 
refcode metd author reference
Bnk2006 A j Brandeker, A., Jayawardhana, R., Khavari, P., Haisch, K.E., & Mardones, D. 2006ApJ...652.1572B
Bnk2006 +E2 ApJ 652, 1572, 2006
Koh2002 Ci j Koehler, R. & Petr-Gotzens, M.G. 2002AJ....124.2899K
Koh2002 +Si AJ 124, 2899, 2002
Koh2002 +A
Tok2016e orb - Tokovinin, A. 2016AJ....152..138T
Tok2016e AJ 152, 138, 2016
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08369-7857 KOH 79 AB 2004 10 354 0.2 10.58   N D 083656.24-785645.5
08369-7857 KOH 79 AB 2015 12 118 0.1 10.40 10.50 K4Ve NO R 083656.24-785645.5
08369-7857 KOH 79 AB 2016 15 102 0.1 10.40 10.50 K4Ve NOWR 083656.24-785645.5
08369-7857 KOH 79 AB 2018 18 76 0.1 10.40 10.50 K4Ve NOWR 083656.24-785645.5
08369-7857 KOH 79 AB 2019 19 64 0.1 10.40 10.50 K4Ve NOWR 083656.24-785645.5
08369-7857 KOH 79 AB 2020 20 54 0.1 10.40 10.50 K4Ve NOWR 083656.24-785645.5

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

 
 
WDS 08369-7857 KOH 79 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08369-7857 KOH 79 AB : MEASURES
 
 
No records found.

 
 
WDS 08369-7857 : VIRTUAL EYEPIECE
 
 

08369-7857 KOH 79A mag 10.4 Sp K4Ve 08369-7857 KOH 79B sep 0.1 P.A. 14.90 mag 10.5 08369-7857 KOH 79C sep 8.4 P.A. 2.70 mag 16.4 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 08369-7857 : ALADIN DSS IMAGE @ 08h 36m 56.24s -78° 56' 45.5"
 
 
 
 
WDS 08369-7857 KOH 79 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08369-7857 KOH 79AB distance=0' 08413-7858 BNK 3AB distance=13' 08413-7858 SHY 528AC distance=13' 08416-7904 BNK 4 distance=15' 08312-7857 TDS5898 distance=17' 08424-7904 BNK 5 distance=18' 08413-7858 BNK 7CD distance=20' 08431-7905 BNK 6 distance=20' 08433-7905 BNK 8AB distance=21' 08433-7905 BNK 8AC distance=21' 08443-7859 KOH 81Aa,Ab distance=22' 08443-7859 BNK 9Ab,B distance=22' 08445-7850 BNK 10 distance=25' 08479-7855 BNK 11 distance=32' 08320-7824 TOI1057 distance=34' 08403-7940 NSN 251 distance=45' 08226-7840 RST2561AB distance=45' 08226-7840 UC 1665AC distance=45' 08489-7929 UC 1716 distance=47' 08458-7941 RST2591 distance=51' 08251-8004 TDS5812 distance=75' 08535-7959 KPP 841 distance=78' 08336-8019 KPP2875 distance=83' 08208-7742 I 800 distance=90' 08515-8018 LDS 244AB distance=91' 08515-8018 LDS 244Aa,Ab distance=91' 08206-7729 I 799 distance=101' 08506-7717 HJ 4163 distance=108' 08429-7707 HDS1253AB distance=112' 08429-7707 HDS1253Aa,Ab distance=112' 08323-7656 TOK 123 distance=122' 08534-7706 TSN 23 distance=123' 08243-8055 KPP2874 distance=123' 08181-7708 UC 1660 distance=124' 08185-8101 KPP3744 distance=133' 08170-8117 TDS5675 distance=150' 08309-8130 TDS5887 distance=154' 08228-7626 HJ 4109 distance=158' 08281-8134 UC 1676AB distance=159' 08287-7618 HDS1211 distance=162' 08188-8133 UC 1662 distance=163' 08425-8153 TDS6052AB distance=177' 08425-8153 DAM1474AB,C distance=177' 08559-7556 TOI1095 distance=192' 08289-8207 UC 1679 distance=192' 08239-7550 LIT 18 distance=192' 08234-7527 KPP2360 distance=215' 08542-7528 NSN 257 distance=216' 08384-7505 LDS 232 distance=232' 08177-8243 CVN 22 distance=232' 08382-7455 HJ 4137AB distance=242' 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 08369-7857 KOH 79 AB 54 0.1
Show 08369-7857 KOH 79 AB,C 14 8.6
Show 08413-7858 BNK 3 AB 264 8.0 13
Show 08413-7858 SHY 528 AC 140 501.4 13
Show 08416-7904 BNK 4 109 2.4 15
Show 08312-7857 TDS5898 356 2.4 17
Show 08424-7904 BNK 5 272 7.1 18
Show 08413-7858 BNK 7 CD 31 9.4 20
Show 08431-7905 BNK 6 349 5.0 20
Show 08433-7905 BNK 8 AB 73 2.7 21
Show 08433-7905 BNK 8 AC 207 6.5 21
Show 08443-7859 KOH 81 Aa,Ab 28 0.2 22
Show 08443-7859 BNK 9 Ab,B 141 3.9 22
Show 08445-7850 BNK 10 65 10.1 25
Show 08479-7855 BNK 11 28 0.0 32
Show 08320-7824 TOI1057 25 1.8 34
Show 08403-7940 NSN 251 99 5.7 45
Show 08226-7840 RST2561 AB 340 2.5 45
Show 08226-7840 UC 1665 AC 283 52.2 45
Show 08489-7929 UC 1716 222 13.6 47
Show 08458-7941 RST2591 2 1.7 51
Show 08251-8004 TDS5812 272 0.6 75
Show 08535-7959 KPP 841 207 7.2 78
Show 08336-8019 KPP2875 52 1.6 83
Show 08208-7742 I 800 108 4.5 90
Show 08515-8018 LDS 244 AB 183 37.0 91
Show 08515-8018 LDS 244 Aa,Ab 295 0.9 91
Show 08206-7729 I 799 233 20.0 101
Show 08506-7717 HJ 4163 324 19.2 108
Show 08429-7707 HDS1253 AB 311 0.2 112
Show 08429-7707 HDS1253 Aa,Ab 211 0.1 112
Show 08323-7656 TOK 123 51 18.9 122
Show 08534-7706 TSN 23 100 223.5 123
Show 08243-8055 KPP2874 40 14.5 123
Show 08181-7708 UC 1660 358 45.5 124
Show 08185-8101 KPP3744 136 5.4 133
Show 08170-8117 TDS5675 226 0.5 150
Show 08309-8130 TDS5887 192 2.7 154
Show 08228-7626 HJ 4109 130 26.0 158
Show 08281-8134 UC 1676 AB 228 131.8 159
Show 08287-7618 HDS1211 351 0.3 162
Show 08188-8133 UC 1662 328 22.7 163
Show 08425-8153 TDS6052 AB 308 0.5 177
Show 08425-8153 DAM1474 AB,C 179 5.0 177
Show 08559-7556 TOI1095 195 2.0 192
Show 08289-8207 UC 1679 267 45.0 192
Show 08239-7550 LIT 18 81 13.3 192
Show 08234-7527 KPP2360 249 20.3 215
Show 08542-7528 NSN 257 76 9.3 216
Show 08384-7505 LDS 232 142 31.2 232
Show 08177-8243 CVN 22 7 0.5 232

 
 
WDS 08369-7857 : COMPONENTS
 
 
  A B
B pa=14.9°
sep=0.05"
 
C pa=2.7°
sep=8.37"
pa=2.6°
sep=8.32"
 
 
08369-7857 A
 
 
Coord arcsec 2000 083656.24-785645.5 Mag 10.4 Spectral class K4Ve (yellow-orange) PmRA -30.00
PmDE 28.0
 
 
08369-7857 B
 
 
Coord arcsec 2000 083656.24-785645.4 Mag 10.5 Tycho2 9402-00921-1 Calc delta mag 0.1
Calc coord yes
Tycho2
Tycho2 9402-00921-1 Pflag RAmdeg 129.23422767 DEmdeg -78.94601924
PmRA -28.0 PmDE 26.8 E RAmdeg 40 E DEmdeg 38
E pmRA 1.9 E pmDE 1.8 EpRAm 1986.52 EpDEm 1986.51
Num 5 Q RAmdeg 0.5 Q DEmdeg 0.6 Q pmRA 0.5
Q pmDE 0.6 BTmag 12.218 E BTmag 0.139 VTmag 10.639
E VTmag 0.046 Prox 999 TYC T HIP
CCDM RAdeg 129.23456556 DEdeg -78.94608083 EpRA 1990 1.70
EpDE 1990 1.74 E RAdeg 40.6 E DEdeg 39.3 Posflg
Corr 0.1
 
 
08369-7857 C
 
 
Coord arcsec 2000 083656.38-785637.1 Mag 16.4 PmRA -10.00 PmDE 16.0
Calc delta mag 6 Calc coord yes