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 |
Notes | n | |
Reference | Tok2016e | |
Equinox | 2000 | |
Last observation | | |
Grade | 4 | (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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
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
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 08369-7857 : ALADIN DSS IMAGE @ 08h 36m 56.24s -78° 56' 45.5"
WDS 08369-7857 KOH 79 AB : NEIGHBORHOODS
|
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 |
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 |
|