18483-6856 JAO 8
18h 48m 21.10s -68° 55' 32.0" P.A. 266.00 sep 0.8 mag 23.60,20.90 Sp M5.0V+WD
Coord 2000 |
18483-6856 |
|
Discov num |
JAO 8 |
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Comp |
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Coord arcsec 2000 |
18 48 21.10 -68 55 32.0 |
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Date first |
2011 |
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Date last |
2021 |
|
Obs |
3 |
|
Pa first |
278 |
|
Pa last |
265.9 |
|
P.A. Now (θ) |
265.9° |
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Sep first |
0.3 |
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Sep last |
0.761 |
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Sep. Now (ρ) |
0.761" |
|
Mag pri |
23.60 |
|
Mag sec |
20.90 |
|
delta mag (ΔM) |
2.7 |
|
Spectral class |
M5.0V+WD (red/Wolf-Rayet) |
|
Pri motion ra |
-034 |
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Sec motion ra |
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Pri motion dec |
-123 |
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Sec motion dec |
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Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
ORBITAL ELEMENTS
Period (P) | 15.17y | ± 3.25 |
Periastron (T) | 2004.58y | ± 0.02 |
Semi-major axis (a) | 0.2082a | ± 0.0255 |
Eccentricity (e) | 0.84 | ± 0.03 |
Inclination (i) | 90.32° | ± 0.37 |
Longitude of periastron (ω) | 280.74° | ± 4.85 |
Node (Ω) | 248.08° | ± 2.25 |
Notes | n | |
Reference | Jao2014b | |
Equinox | | |
Last observation | 2011 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
68.8 |
0.134 |
2001 |
68.7 |
0.146 |
2002 |
68.5 |
0.150 |
2003 |
68.4 |
0.140 |
2004 |
68.2 |
0.095 |
2005 |
247.9 |
0.071 |
2006 |
247.5 |
0.083 |
2007 |
246.9 |
0.066 |
2008 |
245.8 |
0.041 |
2009 |
240.4 |
0.014 |
2010 |
76.4 |
0.014 |
2011 |
71.0 |
0.041 |
2012 |
69.9 |
0.067 |
2013 |
69.4 |
0.092 |
2014 |
69.1 |
0.113 |
2015 |
68.9 |
0.131 |
2016 |
68.7 |
0.144 |
2017 |
68.6 |
0.150 |
2018 |
68.4 |
0.143 |
2019 |
68.2 |
0.108 |
2020 |
248.1 |
0.056 |
2021 |
247.5 |
0.084 |
2022 |
247.0 |
0.069 |
2023 |
246.0 |
0.045 |
2024 |
242.4 |
0.019 |
2025 |
80.5 |
0.009 |
2026 |
71.3 |
0.037 |
2027 |
70.0 |
0.063 |
2028 |
69.4 |
0.088 |
2029 |
69.1 |
0.110 |
2030 |
68.9 |
0.128 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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WDS 18483-6856 JAO 8 : NOTES
discov_num |
notes |
refcode |
JAO 8 |
The fainter source in the STIS UV data is the red dwarf primary; the |
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brighter blue companion is a faint white dwarf with a mass >0.5Msun. |
Jao2014a |
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Primary is SCR 1848-6855, a high-proper motion M5.0V dwarf at 24.6pc. |
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Astrometric observations spanning 8.5 years reveal large photocentric |
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perturbation due to an initially unseen companion. The pair was |
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subsequently resolved by HST/STIS. |
Jao2014b |
REFERENCES
refcode |
metd |
author |
reference |
Jao2014b |
C - |
Jao, W.-C., Henry, T.J., Subasavage, J.P., Winters, J.G., Gies, D.R., |
2014AJ....147...21J |
Jao2014b |
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Riedel, A.R., & Ianna, P.A. |
|
Jao2014b |
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AJ 147, 21, 2014 |
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WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
18483-6856 |
JAO 8 |
|
2011 |
1 |
278 |
0.3 |
23.60 |
20.90 |
M5.0V+WD |
NO P |
184820.97-685535.0 |
18483-6856 |
JAO 8 |
|
2019 |
2 |
265 |
0.7 |
23.60 |
20.90 |
M5.0V+WD |
NO P |
184821.10-685532.0 |
18483-6856 |
JAO 8 |
|
2021 |
3 |
266 |
0.8 |
23.60 |
20.90 |
M5.0V+WD |
NO P |
184821.10-685532.0 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18483-6856 JAO 8 : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18483-6856 JAO 8 : MEASURES
No records found.
WDS 18483-6856 : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
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WDS 18483-6856 : ALADIN DSS IMAGE @ 18h 48m 21.10s -68° 55' 32.0"
WDS 18483-6856 JAO 8 : NEIGHBORHOODS
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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 |
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18483-6856 |
JAO 8 |
|
266 |
0.8 |
|
Show |
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18522-6910 |
MLO 83 |
|
238 |
2.4 |
26 |
Show |
|
18429-6856 |
UC 3652 |
|
206 |
49.5 |
30 |
Show |
|
18474-6931 |
UC 3671 |
|
205 |
6.4 |
36 |
Show |
|
18419-6901 |
DON 913 |
|
156 |
1.0 |
37 |
Show |
|
18464-6946 |
TDT1048 |
|
128 |
2.6 |
52 |
Show |
|
18446-6947 |
TDT1025 |
|
230 |
0.5 |
56 |
Show |
|
18375-6856 |
LDS 643 |
|
40 |
163.4 |
59 |
Show |
|
18375-6850 |
UC 3628 |
|
305 |
48.7 |
59 |
Show |
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18495-6954 |
TDT1074 |
|
342 |
1.5 |
60 |
Show |
|
18397-6814 |
TDT 982 |
|
344 |
0.5 |
64 |
Show |
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18558-6806 |
KPP1437 |
|
122 |
10.8 |
65 |
Show |
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18524-6957 |
TDT1098 |
|
198 |
0.6 |
66 |
Show |
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18412-6950 |
UC 3637 |
|
265 |
61.3 |
67 |
Show |
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18518-7005 |
TDT1093 |
|
10 |
0.4 |
72 |
Show |
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18410-6754 |
TDT 991 |
|
109 |
0.4 |
75 |
Show |
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18411-6752 |
TDT 992 |
|
117 |
0.9 |
76 |
Show |
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18432-6746 |
DON 916 |
|
178 |
4.6 |
76 |
Show |
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18379-6954 |
MLO 82 |
|
207 |
3.3 |
81 |
Show |
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19035-6845 |
FIN 357 |
|
149 |
0.2 |
83 |
Show |
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18397-7005 |
TDT 983 |
|
127 |
1.2 |
84 |
Show |
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18381-7002 |
TDT 967 |
|
290 |
0.7 |
86 |
Show |
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19014-6951 |
UC 3765 |
|
254 |
37.9 |
89 |
Show |
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18442-6728 |
UC 3658 |
|
330 |
37.8 |
91 |
Show |
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18301-6846 |
TDT 916 |
|
249 |
2.1 |
100 |
Show |
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18323-6808 |
TDT 931 |
|
221 |
1.2 |
101 |
Show |
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18358-6742 |
TDT 951 |
|
20 |
1.0 |
102 |
Show |
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18311-6943 |
DON 901 |
|
231 |
1.6 |
103 |
Show |
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19076-6925 |
DON 941 |
|
104 |
0.9 |
105 |
Show |
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18593-6729 |
TDT1171 |
|
343 |
0.6 |
107 |
Show |
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18286-6908 |
DON1118 |
|
290 |
4.1 |
107 |
Show |
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19081-6822 |
LDS 664 |
|
49 |
91.2 |
108 |
Show |
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19076-6928 |
TDT1240 |
|
135 |
0.4 |
108 |
Show |
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18551-6709 |
UC 3721 |
|
346 |
45.1 |
114 |
Show |
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18303-6758 |
TDT 918 |
|
181 |
1.6 |
115 |
Show |
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18591-6717 |
TDT1165 |
|
123 |
0.5 |
116 |
Show |
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18421-6705 |
TDS 935 |
|
282 |
0.9 |
116 |
Show |
|
18317-6742 |
MLO 81 |
|
35 |
4.5 |
118 |
Show |
|
18299-6753 |
DON 900 |
|
222 |
4.3 |
120 |
Show |
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18393-7045 |
TDT 977 |
|
138 |
1.2 |
120 |
Show |
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19084-7004 |
B 2467 |
|
129 |
1.9 |
125 |
Show |
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18391-7058 |
TDT 974 |
|
176 |
0.6 |
132 |
Show |
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18296-6734 |
DON 899 |
|
41 |
0.9 |
133 |
Show |
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18431-6643 |
NZO 91 |
|
162 |
1.8 |
136 |
Show |
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18493-7111 |
TDT1071 |
|
263 |
0.6 |
136 |
Show |
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18357-6656 |
DON 909 |
|
330 |
0.5 |
140 |
Show |
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19002-7104 |
TDS 957 |
|
196 |
1.5 |
142 |
Show |
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18442-6634 |
UC 3657 |
|
71 |
17.7 |
144 |
Show |
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18382-6638 |
LDS 646 |
|
135 |
25.0 |
150 |
Show |
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18348-7109 |
TDT 943 |
|
257 |
1.4 |
150 |
Show |
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19069-6706 |
R 318 |
|
110 |
17.3 |
152 |
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WDS 18483-6856 : COMPONENTS
18483-6856 A
Componente originario normalizzato |
AB |
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Coord arcsec 2000 |
184821.10-685532.0 |
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Mag |
23.6 |
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Spectral class |
M5.0V (red) |
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PmRA |
-34.00 |
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PmDE |
-123.0 |
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18483-6856 B
Componente originario normalizzato |
AB |
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Coord arcsec 2000 |
184821.05-685532.1 |
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Mag |
20.9 |
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Spectral class |
WD (Wolf-Rayet) |
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Calc delta mag |
2.7 |
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Calc coord |
yes |
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