02374-5233 TOK 186 Aa,Ab
02h 37m 24.26s -52° 32' 35.1" P.A. 69.00 sep 0.1 mag 5.50,6.50 Sp A6V dist. 45.56 pc (148.62 l.y.)
Coord 2000 |
02374-5233 |
|
Discov num |
TOK 186 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
02 37 24.26 -52 32 35.1 |
|
Date first |
2011 |
|
Date last |
2021 |
|
Obs |
26 |
|
Pa first |
60 |
|
Pa last |
69 |
|
P.A. Now (θ) |
351.5° |
|
Sep first |
0.1 |
|
Sep last |
0.069 |
|
Sep. Now (ρ) |
0.041" |
|
Mag pri |
5.50 |
|
Mag sec |
6.50 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
A6V (white) |
|
Pri motion ra |
+111 |
|
Sec motion ra |
|
|
Pri motion dec |
+001 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
02374-5233 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
232835 |
02 37 24 -52 32 35 |
TOK 186 Aa,Ab |
2021 |
26 |
69 |
0.1 |
5.50 |
6.50 |
1.00 |
Y |
<=== |
Show |
Eta Hor |
232835 |
02 37 24 -52 32 35 |
EHR 2 AB |
2008 |
3 |
232 |
4.9 |
4.50 |
14.00 |
9.50 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Horologium |
|
SAO |
232835 |
|
HIP |
12225 |
|
Tycho2 |
8484-01504-1 |
|
Gaia DR2 |
4745123853382686336 |
|
HD |
16555 |
|
HR |
778 |
|
GC |
3166 |
|
CP |
CP-53 457 |
|
Bayer |
Eta Horologii |
|
Bayer name |
Eta Hor |
|
FK5 |
2182 |
|
Distance |
45.56 |
|
Distance ly |
148.62 |
|
Bayer greek |
η Hor |
|
ORBITAL ELEMENTS
Period (P) | 3.171y | |
Periastron (T) | 2011.523y | |
Semi-major axis (a) | 0.079a | |
Eccentricity (e) | 0.065 | |
Inclination (i) | 116.5° | |
Longitude of periastron (ω) | 38° | |
Node (Ω) | 232.6° | |
Notes | n | |
Reference | Tok2017c | |
Equinox | 2000 | |
Last observation | 2017 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
54.8 |
0.082 |
2001 |
307.6 |
0.037 |
2002 |
214.2 |
0.062 |
2003 |
63.3 |
0.076 |
2004 |
346.4 |
0.040 |
2005 |
226.0 |
0.072 |
2006 |
74.2 |
0.064 |
2007 |
13.3 |
0.052 |
2008 |
235.8 |
0.075 |
2009 |
91.6 |
0.048 |
2010 |
29.1 |
0.066 |
2011 |
246.0 |
0.070 |
2012 |
124.1 |
0.035 |
2013 |
39.7 |
0.077 |
2014 |
259.1 |
0.058 |
2015 |
169.4 |
0.037 |
2016 |
48.1 |
0.082 |
2017 |
279.7 |
0.045 |
2018 |
199.6 |
0.050 |
2019 |
56.0 |
0.082 |
2020 |
313.6 |
0.037 |
2021 |
216.2 |
0.064 |
2022 |
64.7 |
0.075 |
2023 |
351.5 |
0.041 |
2024 |
227.5 |
0.073 |
2025 |
76.3 |
0.062 |
2026 |
16.2 |
0.054 |
2027 |
237.2 |
0.074 |
2028 |
95.3 |
0.046 |
2029 |
31.0 |
0.068 |
2030 |
247.7 |
0.068 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 02374-5233 TOK 186 Aa,Ab : NOTES
discov_num |
notes |
refcode |
EHR 2 |
Primary is eta Hor. Physical/optical nature ambiguous. |
Ehr2010 |
TOK 186 |
Aa,Ab: The Marion et al. (2014) measure is in good agreement with the |
Mrn2014 |
|
Hartkopf et al. (2012) discovery observation, but hints at a |
Tok2014a |
|
significantly eccentric and/or inclined orbit. A face-on, circular |
|
|
orbit with a semimajor axis of 3.6au would have a period of ~3.7y, |
|
|
which is in line with the 3.0y astrometric period found by Goldin & |
|
|
Makarov (2007). |
Gln2007 |
REFERENCES
refcode |
metd |
author |
reference |
Ehr2010 |
Ao j |
Ehrenreich, D., Lagrange, A.-M., Montagnier, G., Chauvin, G., Galland, F. |
2010A&A...523A..73E |
Ehr2010 |
|
Beuzit, J.-L., & Rameau. J. |
|
Ehr2010 |
|
A&A 523, A73, 2010 |
|
Gln2007 |
orb - |
Goldin, A. & Makarov, V.V. |
2007ApJS..173..137G |
Gln2007 |
|
ApJS 173, 137, 2007 |
|
Gln2007 |
|
(Note: Astrometric orbits based on merged NDAC and FAST reductions of Hipparcos |
|
Gln2007 |
|
data. Values of T0 are relative to 1991.25 = JD 2448349.0625) |
|
Mrn2014 |
Kv j |
Marion, L., Absil, O., Ertel, S., Le Bouquin, J.-B., Augereau, J.-C., Blind, N., |
2014A&A...570A.127M |
Mrn2014 |
|
Defrere, D., Lebreton, J., & Milli, J. |
|
Mrn2014 |
|
A&A 570, A127, 2014 |
|
Tok2014a |
orb j |
Tokovinin, A., Mason, B.D., & Hartkopf, W.I. |
2014AJ....147..123T |
Tok2014a |
+St |
AJ 147, 123, 2014 (some measures corrected in Tok2017b) |
2017AJ....154..110T |
Tok2017c |
orb - |
Tokovinin, A. |
2017IAUDS.193....1T |
Tok2017c |
|
Inf. Circ. 193, 1, 2017 |
|
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
02374-5233 |
TOK 186 |
Aa,Ab |
2011 |
2 |
61 |
0.1 |
5.50 |
6.50 |
A6V |
N |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2013 |
5 |
111 |
0.0 |
5.50 |
6.50 |
A6V |
N |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2015 |
11 |
341 |
0.0 |
5.50 |
6.50 |
A6V |
NO |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2017 |
17 |
226 |
0.1 |
5.50 |
6.50 |
A6V |
NO |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2018 |
21 |
59 |
0.1 |
5.50 |
6.50 |
A6V |
NO |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2019 |
23 |
339 |
0.0 |
5.50 |
6.50 |
A6V |
NO |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2020 |
25 |
229 |
0.1 |
5.50 |
6.50 |
A6V |
NO |
023724.26-523235.1 |
02374-5233 |
TOK 186 |
Aa,Ab |
2021 |
26 |
69 |
0.1 |
5.50 |
6.50 |
A6V |
NO |
023724.26-523235.1 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 02374-5233 TOK 186 Aa,Ab : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 02374-5233 TOK 186 Aa,Ab : MEASURES
No records found.
WDS 02374-5233 : 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 02374-5233 : ALADIN DSS IMAGE @ 02h 37m 24.26s -52° 32' 35.1"
WDS 02374-5233 TOK 186 Aa,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 |
|
02374-5233 |
TOK 186 |
Aa,Ab |
69 |
0.1 |
|
Show |
|
02374-5233 |
EHR 2 |
AB |
232 |
4.9 |
|
Show |
|
02387-5257 |
COO 14 |
AB |
128 |
8.7 |
28 |
Show |
|
02387-5257 |
SHY 424 |
AC |
75 |
218.2 |
28 |
Show |
|
02417-5216 |
KPP 90 |
|
64 |
4.9 |
43 |
Show |
|
02344-5306 |
TSN 125 |
|
68 |
0.1 |
44 |
Show |
|
02374-5149 |
KPP2808 |
|
345 |
21.1 |
44 |
Show |
|
02418-5300 |
SYU 4 |
Ba,Bb |
133 |
0.1 |
49 |
Show |
|
02418-5300 |
JFF 1 |
AB |
11 |
22.2 |
49 |
Show |
|
02418-5300 |
TOK 690 |
Aa,Ab |
111 |
0.0 |
49 |
Show |
|
02332-5156 |
HDS 333 |
|
262 |
0.5 |
53 |
Show |
|
02390-5133 |
UC 767 |
|
19 |
20.2 |
62 |
Show |
|
02442-5234 |
TOK 816 |
|
130 |
1.3 |
62 |
Show |
|
02438-5257 |
B 2560 |
|
276 |
10.5 |
63 |
Show |
|
02460-5252 |
KPP2473 |
|
234 |
22.1 |
81 |
Show |
|
02283-5221 |
RSS 57 |
|
132 |
22.2 |
84 |
Show |
|
02284-5320 |
NSC 13 |
|
185 |
6.0 |
95 |
Show |
|
02277-5201 |
BRT2019 |
|
220 |
5.1 |
95 |
Show |
|
02421-5359 |
UC 781 |
|
230 |
23.0 |
97 |
Show |
|
02479-5306 |
B 1925 |
AB |
2 |
14.7 |
102 |
Show |
|
02479-5306 |
UC 811 |
AC |
264 |
46.8 |
102 |
Show |
|
02267-5156 |
TDS2254 |
|
330 |
0.5 |
106 |
Show |
|
02432-5407 |
HDS 356 |
|
142 |
25.6 |
108 |
Show |
|
02396-5425 |
HU 1350 |
|
40 |
0.9 |
115 |
Show |
|
02401-5040 |
UC 772 |
|
101 |
7.9 |
116 |
Show |
|
02462-5403 |
UC 804 |
|
165 |
8.4 |
120 |
Show |
|
02261-5124 |
SKF 947 |
|
301 |
43.0 |
125 |
Show |
|
02299-5044 |
HDS 324 |
|
42 |
0.4 |
130 |
Show |
|
02235-5208 |
I 1142 |
|
40 |
3.7 |
130 |
Show |
|
02317-5432 |
UC 751 |
|
290 |
10.2 |
131 |
Show |
|
02517-5234 |
HU 1562 |
|
80 |
0.1 |
131 |
Show |
|
02225-5237 |
TDS2233 |
|
228 |
0.6 |
137 |
Show |
|
02239-5338 |
B 670 |
|
248 |
2.7 |
138 |
Show |
|
02389-5450 |
HJ 3520 |
|
205 |
20.6 |
139 |
Show |
|
02425-5452 |
KPP2432 |
|
338 |
21.3 |
147 |
Show |
|
02210-5242 |
FIN 81 |
|
65 |
0.9 |
150 |
Show |
|
02520-5347 |
BRT2020 |
AB |
193 |
3.0 |
153 |
Show |
|
02306-5013 |
BRT 649 |
|
330 |
3.4 |
153 |
Show |
|
02225-5346 |
RST1238 |
|
112 |
0.6 |
154 |
Show |
|
02347-5000 |
SKF 948 |
|
325 |
27.1 |
155 |
Show |
|
02229-5106 |
EHR 1 |
|
154 |
2.3 |
161 |
Show |
|
02197-5218 |
RSS 56 |
|
2 |
9.1 |
163 |
Show |
|
02475-5452 |
UC 808 |
|
76 |
9.3 |
166 |
Show |
|
02495-5438 |
TDS2366 |
|
70 |
0.8 |
166 |
Show |
|
02518-5418 |
KPP 92 |
|
204 |
3.9 |
166 |
Show |
|
02468-5011 |
KPP3502 |
AB |
90 |
1.7 |
168 |
Show |
|
02236-5433 |
HDS 310 |
|
21 |
0.3 |
172 |
Show |
|
02462-5002 |
UC 803 |
|
354 |
10.7 |
172 |
Show |
|
02326-5521 |
RST 52 |
|
287 |
1.6 |
174 |
Show |
|
02293-4954 |
NSN 184 |
|
8 |
9.0 |
176 |
Show |
|
02555-5340 |
TOI 847 |
|
317 |
1.2 |
177 |
|
|
WDS 02374-5233 : COMPONENTS
|
A |
Ab |
Ab |
pa=57.7°
sep=0.05"
| |
B |
pa=218.3°
sep=3.83"
| pa=218.5°
sep=3.88"
|
02374-5233 A
Name |
Eta Hor |
|
Coord arcsec 2000 |
023724.26-523235.1 |
|
Mag |
4.5 |
|
Spectral class |
A6V (white) |
|
PmRA |
111.00 |
|
PmDE |
1.0 |
|
SAO |
232835 |
|
HIP |
12225 |
|
Tycho2 |
8484-01504-1 |
|
HD |
16555 |
|
HR |
778 |
|
GC |
3166 |
|
CP |
CP-53 457 |
|
Bayer |
Eta Horologii |
|
Bayer name |
Eta Hor |
|
FK5 |
2182 |
|
Tycho2 |
8484-01504-1 |
|
Pflag |
|
|
RAmdeg |
39.35148879 |
|
DEmdeg |
-52.54312195 |
|
PmRA |
95.8 |
|
PmDE |
-14.7 |
|
E RAmdeg |
3 |
|
E DEmdeg |
3 |
|
E pmRA |
1.0 |
|
E pmDE |
0.9 |
|
EpRAm |
1991.38 |
|
EpDEm |
1991.51 |
|
Num |
17 |
|
Q RAmdeg |
1.0 |
|
Q DEmdeg |
1.3 |
|
Q pmRA |
1.1 |
|
Q pmDE |
1.6 |
|
BTmag |
5.629 |
|
E BTmag |
0.014 |
|
VTmag |
5.328 |
|
E VTmag |
0.009 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
12225 |
|
CCDM |
|
|
RAdeg |
39.35111889 |
|
DEdeg |
-52.54308778 |
|
EpRA 1990 |
1.54 |
|
EpDE 1990 |
1.67 |
|
E RAdeg |
3.4 |
|
E DEdeg |
3.4 |
|
Posflg |
|
|
Corr |
0.2 |
|
SAO |
232835 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0093 |
|
DE1950 |
|
|
PmDE1950 |
-0.013 |
|
Vmag |
5.3 |
|
SpType |
A5 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
3166 |
|
DM |
CP-53 457 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
16555 |
|
M HD |
0 |
|
GC |
3166 |
|
RA1950rad |
0.67960887 |
|
DE1950rad |
-0.92081614 |
|
PmRA2000 |
0.0095 |
|
PmDE2000 |
-0.019 |
|
Catalog |
H |
|
HIP |
12225 |
|
Proxy |
|
|
RAhms |
02 37 24.26 |
|
DEdms |
-52 32 35.1 |
|
Vmag |
5.3 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
39.3511 |
|
DEdeg |
-52.5431 |
|
AstroRef |
|
|
Plx |
22.49 |
|
CCDM |
|
|
N CCDM |
|
|
Nsys |
|
|
Ncomp |
1 |
|
MultFlag |
X |
|
Source |
|
|
Qual |
S |
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
16555 |
|
BD |
|
|
CD |
|
|
CP |
CP-53 457 |
|
Dm number |
-53 457 |
|
VIred |
0.31 |
|
SpType |
A6V |
|
R SpType |
|
|
Coord arcsec 2000 |
023724.26-523235.1 |
|
HIP |
12225 |
|
Sn |
1 |
|
So |
2 |
|
Nc |
1 |
|
RArad |
0.6868063229 |
|
DErad |
-0.917049891 |
|
Plx |
21.95 |
|
PmRA |
112.7 |
|
PmDE |
3.73 |
|
E RArad |
0.84 |
|
E DErad |
0.93 |
|
E Plx |
1.1 |
|
E pmRA |
0.98 |
|
E pmDE |
1.02 |
|
Hpmag |
5.3735 |
|
E Hpmag |
0.0006 |
|
SHp |
0.005 |
|
VA |
0 |
|
BV |
0.289 |
|
E BV |
0.005 |
|
VI |
0.33 |
|
02374-5233 Ab
Coord arcsec 2000 |
023724.26-523235.1 |
|
Mag |
6.5 |
|
Calc delta mag |
1 |
|
Calc coord |
yes |
|
02374-5233 B
Coord arcsec 2000 |
023724.00-523238.1 |
|
Mag |
14 |
|
Calc delta mag |
8.5 |
|
Calc coord |
yes |
|