08447-4238 CHR 238 (HD 74842)
08h 44m 44.97s -42° 38' 04.4" P.A. 22.00 sep 0.1 mag 7.22,8.30 Sp K0V: dist. 25.27 pc (82.43 l.y.)
Coord 2000 |
08447-4238 |
|
Discov num |
CHR 238 |
|
Comp |
|
|
Coord arcsec 2000 |
08 44 44.97 -42 38 04.4 |
|
Date first |
1996 |
|
Date last |
2021 |
|
Obs |
20 |
|
Pa first |
218 |
|
Pa last |
21.7 |
|
P.A. Now (θ) |
21.7° |
|
Sep first |
0.1 |
|
Sep last |
0.076 |
|
Sep. Now (ρ) |
0.076" |
|
Mag pri |
7.22 |
|
Mag sec |
8.30 |
|
delta mag (ΔM) |
1.08 |
|
Spectral class |
K0V: (yellow-orange) |
|
Pri motion ra |
-006 |
|
Sec motion ra |
|
|
Pri motion dec |
-280 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 74842 |
|
Constellation |
Vela |
|
SAO |
220383 |
|
HIP |
42916 |
|
Tycho2 |
7683-01655-1 |
|
Gaia DR2 |
5524839844162098048 |
|
HD |
74842 |
|
GC |
12062 |
|
GL |
Gl 321.2 |
|
CD |
CD-42 4577 |
|
CP |
CP-42 2889 |
|
Distance |
25.27 |
|
Distance ly |
82.43 |
|
ORBITAL ELEMENTS
Period (P) | 2.262y | ± 0.001 |
Periastron (T) | 2012.584y | ± 0.007 |
Semi-major axis (a) | 0.0775a | ± 0.0015 |
Eccentricity (e) | 0.676 | ± 0.007 |
Inclination (i) | 152.2° | ± 3.8 |
Longitude of periastron (ω) | 125.2° | ± 5.1 |
Node (Ω) | 13° | ± 5.2 |
Notes | n | |
Reference | Tok2017b | |
Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
70.7 |
0.117 |
2001 |
14.0 |
0.070 |
2002 |
83.8 |
0.105 |
2003 |
36.2 |
0.101 |
2004 |
101.8 |
0.085 |
2005 |
49.9 |
0.116 |
2006 |
137.1 |
0.053 |
2007 |
61.4 |
0.121 |
2008 |
308.3 |
0.028 |
2009 |
72.9 |
0.116 |
2010 |
19.5 |
0.077 |
2011 |
86.5 |
0.102 |
2012 |
39.0 |
0.105 |
2013 |
106.2 |
0.080 |
2014 |
52.1 |
0.118 |
2015 |
149.3 |
0.046 |
2016 |
63.4 |
0.120 |
2017 |
336.6 |
0.038 |
2018 |
75.2 |
0.114 |
2019 |
24.1 |
0.084 |
2020 |
89.5 |
0.099 |
2021 |
41.7 |
0.108 |
2022 |
111.2 |
0.074 |
2023 |
54.2 |
0.119 |
2024 |
166.2 |
0.038 |
2025 |
65.5 |
0.120 |
2026 |
352.8 |
0.049 |
2027 |
77.5 |
0.112 |
2028 |
28.1 |
0.089 |
2029 |
92.7 |
0.095 |
2030 |
44.2 |
0.111 |
|
|
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 08447-4238 CHR 238 (HD 74842) : NOTES
discov_num |
notes |
refcode |
CHR 238 |
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic |
|
|
masses of 1.36 +/- 0.77, 1.84, and 0.85 Msun, respectively. |
Mlk2012 |
REFERENCES
refcode |
metd |
author |
reference |
Mlk2012 |
not - |
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. |
2012A&A...546A..69M |
Mlk2012 |
|
A&A 546, A69, 2012 |
|
Tok2017b |
orb j |
Tokovinin, A. |
2017AJ....154..110T |
Tok2017b |
|
AJ 154, 110, 2017 |
|
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 |
08447-4238 |
CHR 238 |
|
1996 |
1 |
218 |
0.1 |
7.22 |
8.30 |
K0V: |
D |
084444.97-423801.9 |
08447-4238 |
CHR 238 |
|
2001 |
2 |
0 |
0.1 |
7.22 |
8.30 |
K0V: |
D |
084444.97-423801.9 |
08447-4238 |
CHR 238 |
|
2010 |
3 |
88 |
0.1 |
7.22 |
8.30 |
K0V: |
D |
084444.97-423801.9 |
08447-4238 |
CHR 238 |
|
2012 |
4 |
296 |
0.1 |
7.22 |
8.30 |
K0V: |
NO |
084444.97-423801.9 |
08447-4238 |
CHR 238 |
|
2015 |
6 |
325 |
0.1 |
7.22 |
8.30 |
K0V: |
NO |
084444.97-423801.9 |
08447-4238 |
CHR 238 |
|
2017 |
15 |
137 |
0.1 |
7.22 |
8.30 |
K0V: |
NO |
084444.97-423804.4 |
08447-4238 |
CHR 238 |
|
2018 |
17 |
28 |
0.1 |
7.22 |
8.30 |
K0V: |
NO |
084444.97-423804.4 |
08447-4238 |
CHR 238 |
|
2019 |
19 |
94 |
0.1 |
7.22 |
8.30 |
K0V: |
NO |
084444.97-423804.4 |
08447-4238 |
CHR 238 |
|
2021 |
20 |
22 |
0.1 |
7.22 |
8.30 |
K0V: |
NO |
084444.97-423804.4 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 08447-4238 CHR 238 (HD 74842) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 08447-4238 CHR 238 (HD 74842) : MEASURES
No records found.
WDS 08447-4238 (HD 74842) : 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 08447-4238 (HD 74842) : ALADIN DSS IMAGE @ 08h 44m 44.97s -42° 38' 04.4"
WDS 08447-4238 CHR 238 (HD 74842) : 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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08447-4238 |
CHR 238 |
|
22 |
0.1 |
|
Show |
|
08444-4239 |
HJ 4133 |
|
64 |
45.7 |
4 |
Show |
|
08458-4237 |
CPO 231 |
|
210 |
4.4 |
12 |
Show |
|
08466-4234 |
JC 13 |
|
311 |
2.2 |
21 |
Show |
|
08436-4254 |
CPO 229 |
|
219 |
6.5 |
21 |
Show |
|
08466-4247 |
HDS1270 |
|
122 |
0.4 |
23 |
Show |
|
08430-4254 |
TDS6053 |
|
143 |
1.2 |
25 |
Show |
|
08473-4236 |
JC 14 |
|
86 |
5.5 |
29 |
Show |
|
08420-4236 |
I 315 |
|
171 |
0.7 |
31 |
Show |
|
08420-4227 |
TDS6047 |
|
256 |
0.4 |
32 |
Show |
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08420-4225 |
DAM1471 |
|
122 |
16.3 |
34 |
Show |
|
08421-4256 |
LDS 230 |
AB |
188 |
45.4 |
34 |
Show |
|
08421-4256 |
EGN 8 |
AC |
332 |
5.5 |
34 |
Show |
|
08421-4256 |
EGN 8 |
AD |
101 |
9.6 |
34 |
Show |
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08445-4200 |
SKF 485 |
|
349 |
11.0 |
39 |
Show |
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08469-4208 |
TDS6093 |
|
162 |
0.4 |
39 |
Show |
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08409-4232 |
BRT 741 |
|
356 |
4.2 |
44 |
Show |
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08419-4206 |
TDS6045 |
|
153 |
2.4 |
45 |
Show |
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08404-4223 |
HDS1247 |
Aa,Ab |
109 |
0.4 |
51 |
Show |
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08404-4223 |
DUN 72 |
A,BC |
|
129.6 |
51 |
Show |
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08404-4223 |
HDS1248 |
BC |
185 |
0.1 |
52 |
Show |
|
08479-4321 |
DON 282 |
|
180 |
2.4 |
54 |
Show |
|
08479-4320 |
HDS1274 |
|
349 |
0.3 |
56 |
Show |
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08485-4201 |
I 1512 |
|
276 |
0.5 |
56 |
Show |
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08497-4249 |
RSS 10 |
|
332 |
19.6 |
56 |
Show |
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08474-4143 |
CPO 233 |
|
85 |
2.8 |
63 |
Show |
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08477-4144 |
MUG 6 |
AB |
77 |
21.3 |
63 |
Show |
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08479-4334 |
DON 283 |
|
157 |
5.5 |
66 |
Show |
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08407-4149 |
CPO 224 |
|
247 |
4.4 |
67 |
Show |
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08446-4345 |
DON 278 |
|
355 |
0.4 |
68 |
Show |
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08504-4205 |
SNA 7 |
|
36 |
0.0 |
71 |
Show |
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08510-4303 |
DON 288 |
|
182 |
1.6 |
73 |
Show |
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08486-4138 |
TDS 494 |
|
37 |
1.0 |
74 |
Show |
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08449-4124 |
HDS1262 |
|
204 |
0.3 |
74 |
Show |
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08501-4327 |
TDS6122 |
|
125 |
2.4 |
76 |
Show |
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08378-4303 |
TOI 601 |
|
352 |
0.2 |
80 |
Show |
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08447-4117 |
WG 109 |
DE |
326 |
10.3 |
82 |
Show |
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08447-4117 |
WG 109 |
EF |
7 |
10.0 |
82 |
Show |
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08447-4117 |
I 815 |
AB |
1 |
4.4 |
82 |
Show |
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08447-4117 |
I 815 |
AC |
130 |
8.2 |
82 |
Show |
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08447-4117 |
I 815 |
AD |
226 |
35.3 |
82 |
Show |
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08442-4116 |
SKF 64 |
|
111 |
4.3 |
83 |
Show |
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08375-4221 |
RST2573 |
|
234 |
5.1 |
83 |
Show |
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08495-4134 |
RST2585 |
|
288 |
3.8 |
84 |
Show |
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08512-4153 |
TDS6135 |
|
136 |
0.5 |
85 |
Show |
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08479-4357 |
TDS6105 |
|
128 |
0.5 |
87 |
Show |
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08366-4235 |
TDS5978 |
|
3 |
2.0 |
91 |
Show |
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08506-4135 |
TDS6129 |
|
119 |
0.5 |
91 |
Show |
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08440-4411 |
WFC 74 |
|
214 |
5.4 |
94 |
Show |
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08503-4349 |
CPO 236 |
|
125 |
6.5 |
95 |
Show |
|
08403-4358 |
CPO 222 |
|
4 |
4.6 |
95 |
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WDS 08447-4238 : COMPONENTS
08447-4238 A
Componente originario normalizzato |
AB |
|
Name |
HD 74842 |
|
Coord arcsec 2000 |
084444.97-423804.4 |
|
Mag |
7.22 |
|
Spectral class |
K0V: (yellow-orange) |
|
PmRA |
-6.00 |
|
PmDE |
-280.0 |
|
SAO |
220383 |
|
HIP |
42916 |
|
Tycho2 |
7683-01655-1 |
|
HD |
74842 |
|
GC |
12062 |
|
CD |
CD-42 4577 |
|
CP |
CP-42 2889 |
|
Tycho2 |
7683-01655-1 |
|
Pflag |
|
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RAmdeg |
131.18738665 |
|
DEmdeg |
-42.63455341 |
|
PmRA |
1.8 |
|
PmDE |
-284.6 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
1.0 |
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E pmDE |
1.0 |
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EpRAm |
1991.27 |
|
EpDEm |
1991.45 |
|
Num |
12 |
|
Q RAmdeg |
1.2 |
|
Q DEmdeg |
1.2 |
|
Q pmRA |
1.3 |
|
Q pmDE |
1.3 |
|
BTmag |
8.123 |
|
E BTmag |
0.015 |
|
VTmag |
7.282 |
|
E VTmag |
0.010 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
42916 |
|
CCDM |
|
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RAdeg |
131.18738111 |
|
DEdeg |
-42.63390667 |
|
EpRA 1990 |
1.63 |
|
EpDE 1990 |
1.82 |
|
E RAdeg |
4.3 |
|
E DEdeg |
4.3 |
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Posflg |
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Corr |
0.0 |
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SAO |
220383 |
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DelFlag |
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RA1950 |
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PmRA1950 |
-0.0005 |
|
DE1950 |
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PmDE1950 |
-0.28 |
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Vmag |
7.4 |
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SpType |
G5 |
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Double code |
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Source |
70 |
|
CatNum |
12062 |
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DM |
CD-42 4577 |
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DMcomp |
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BDsup |
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HD |
74842 |
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M HD |
0 |
|
GC |
12062 |
|
RA1950rad |
2.28183471 |
|
DE1950rad |
-0.74085598 |
|
PmRA2000 |
0 |
|
PmDE2000 |
-0.278 |
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Catalog |
H |
|
HIP |
42916 |
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Proxy |
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RAhms |
08 44 44.97 |
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DEdms |
-42 38 01.9 |
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Vmag |
7.2 |
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VarFlag |
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R Vmag |
H |
|
RAdeg |
131.187 |
|
DEdeg |
-42.6339 |
|
AstroRef |
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Plx |
36.04 |
|
CCDM |
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N CCDM |
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Nsys |
|
|
Ncomp |
1 |
|
MultFlag |
X |
|
Source |
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|
Qual |
S |
|
M HIP |
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Theta |
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Rho |
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HD |
74842 |
|
BD |
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CD |
CD-42 4577 |
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CP |
CP-42 2889 |
|
Dm number |
-42 4577 |
|
VIred |
0.81 |
|
SpType |
G5V |
|
R SpType |
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Coord arcsec 2000 |
084444.97-423801.9 |
|
HIP |
42916 |
|
Sn |
1 |
|
So |
2 |
|
Nc |
1 |
|
RArad |
2.2896517643 |
|
DErad |
-0.7441012529 |
|
Plx |
39.57 |
|
PmRA |
2.03 |
|
PmDE |
-287.78 |
|
E RArad |
1.7 |
|
E DErad |
1.86 |
|
E Plx |
2.24 |
|
E pmRA |
2.06 |
|
E pmDE |
2.24 |
|
Hpmag |
7.3371 |
|
E Hpmag |
0.0011 |
|
SHp |
0.011 |
|
VA |
0 |
|
BV |
0.743 |
|
E BV |
0.002 |
|
VI |
0.81 |
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08447-4238 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
084444.97-423804.3 |
|
Mag |
8.3 |
|
Calc delta mag |
1.08 |
|
Calc coord |
yes |
|