03124-4425 HJ 3556 AB,C (HD 20121)
03h 12m 25.68s -44° 25' 10.8" P.A. 188.00 sep 3.7 mag 6.42,8.76 Sp F7III dist. 42.5 pc (138.64 l.y.)
Coord 2000 |
03124-4425 |
|
Discov num |
HJ 3556 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
03 12 25.68 -44 25 10.8 |
|
Date first |
1848 |
|
Date last |
2017 |
|
Obs |
68 |
|
Pa first |
238 |
|
Pa last |
187.8 |
|
P.A. Now (θ) |
187.8° |
|
Sep first |
1.8 |
|
Sep last |
3.667 |
|
Sep. Now (ρ) |
3.667" |
|
Mag pri |
6.42 |
|
Mag sec |
8.76 |
|
delta mag (ΔM) |
2.34 |
|
Spectral class |
F7III (yellow-white) |
|
Pri motion ra |
+092 |
|
Sec motion ra |
+087 |
|
Pri motion dec |
-006 |
|
Sec motion dec |
-018 |
|
Notes |
N
V
(See Notes, Proper motion indicates physical) |
|
rPM=0.141 (< 0.3, Physical double)
This double is physical.
03124-4425 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
216209 |
03 12 26 -44 25 11 |
JC 8 AB |
2021 |
125 |
90 |
0.1 |
6.42 |
7.36 |
0.94 |
Y |
|
Show |
HD 20121 |
216209 |
03 12 26 -44 25 11 |
HJ 3556 AB,C |
2017 |
68 |
188 |
3.7 |
6.42 |
8.76 |
2.34 |
|
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 20121 |
|
Constellation |
Eridanus |
|
SAO |
216209 |
|
HIP |
14913 |
|
Tycho2 |
7567-01177-1 |
|
Gaia DR2 |
4850405974392311168 |
|
HD |
20121 |
|
HR |
968 |
|
CD |
CD-44 1025 |
|
CP |
CP-44 338 |
|
FK5 |
2228 |
|
Distance |
42.5 |
|
Distance ly |
138.64 |
|
WDS 03124-4425 HJ 3556 AB,C (HD 20121) : NOTES
discov_num |
notes |
refcode |
JC 5 |
Ma,Mb = 1.365 +/- 0.031, 1.134 +/- 0.024 \msun. |
GmJ2022 |
JC 8 |
Variable RV of AB, not explained by the visual motion, has been |
|
|
reported (Eggen 1965), but Heintz's mass ratio does not support |
Egg1965b |
|
the presence of a fourth body. |
Hei1979a |
|
AB: Malkov et al. (2012) derive dynamical, photometric, and |
|
|
spectroscopic masses 2.59 +/- 0.73, 2.18, and 3.82 Msun, respectively. |
Mlk2012 |
HJ 3556 |
AB,C: Star C (mag. 9.2, 3.5") is in slow retrograde motion. |
|
|
Heintz (1979) gives AB orbit, attempts AC orbit with P=987yr. |
Hei1979a |
|
The motion of AC is not directed away from PM(A), hence physical. |
Tok2014d |
REFERENCES
refcode |
metd |
author |
reference |
Egg1965b |
- |
Eggen, O.J. |
1965Obs....85..191E |
Egg1965b |
|
Observatory 85, 191, 1965 |
|
GmJ2022 |
orb j |
Gomez, J., Docobo, J.A., Campo, P.P., Andrade, M., Mendez, R.A. & Costa, E. |
2022MNRAS.509.4229G |
GmJ2022 |
+not |
MNRAS 509, 4229, 2022 |
|
Hei1979a |
orb - |
Heintz, W.D. |
1979PASP...91..356H |
Hei1979a |
|
PASP 91, 356, 1979 |
|
Mlk2012 |
not - |
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. |
2012A&A...546A..69M |
Mlk2012 |
|
A&A 546, A69, 2012 |
|
Tok2014d |
E2 - |
Tokovinin, A. |
2014AJ....147...86T |
Tok2014d |
|
AJ 147, 86, 2014 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
HJ |
Herschel, J.F.W. |
50 |
JC |
Jacob, W.S. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
03124-4425 |
HJ 3556 |
AB,C |
2009 |
66 |
190 |
3.9 |
6.42 |
8.76 |
F5V |
N |
031225.68-442510.8 |
03124-4425 |
HJ 3556 |
AB,C |
2013 |
66 |
189 |
3.8 |
6.42 |
8.76 |
F5V |
N |
031225.68-442510.8 |
03124-4425 |
HJ 3556 |
AB,C |
2017 |
68 |
188 |
3.7 |
6.42 |
8.76 |
F7III |
NV |
031225.68-442510.8 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 03124-4425 HJ 3556 AB,C (HD 20121) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 03124-4425 HJ 3556 AB,C (HD 20121) : MEASURES
No records found.
WDS 03124-4425 (HD 20121) : 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 03124-4425 (HD 20121) : ALADIN DSS IMAGE @ 03h 12m 25.68s -44° 25' 10.8"
WDS 03124-4425 HJ 3556 AB,C (HD 20121) : 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 |
|
03124-4425 |
JC 8 |
AB |
90 |
0.1 |
1 |
Show |
|
03124-4425 |
HJ 3556 |
AB,C |
188 |
3.7 |
1 |
Show |
|
03149-4458 |
TOI 914 |
|
169 |
0.1 |
42 |
Show |
|
03087-4413 |
HDS 398 |
|
89 |
0.1 |
43 |
Show |
|
03170-4426 |
TDS2514 |
|
349 |
0.4 |
50 |
Show |
|
03180-4408 |
DAM 786 |
|
299 |
8.1 |
63 |
Show |
|
03188-4418 |
RSS 63 |
|
120 |
22.0 |
69 |
Show |
|
03129-4314 |
DON 48 |
|
174 |
0.8 |
72 |
Show |
|
03111-4535 |
UC 962 |
|
243 |
79.0 |
72 |
Show |
|
03190-4411 |
R 26 |
|
243 |
58.6 |
72 |
Show |
|
03137-4536 |
I 1482 |
|
336 |
7.0 |
72 |
Show |
|
03140-4543 |
RST 62 |
|
202 |
1.5 |
80 |
Show |
|
03173-4324 |
HU 1354 |
|
162 |
2.3 |
81 |
Show |
|
03128-4547 |
RST 61 |
|
222 |
1.3 |
82 |
Show |
|
03046-4425 |
LDS3451 |
|
244 |
12.4 |
84 |
Show |
|
03195-4506 |
HU 1355 |
|
318 |
1.0 |
86 |
Show |
|
03196-4506 |
TDS2524 |
|
352 |
0.9 |
87 |
Show |
|
03169-4313 |
RST5199 |
|
59 |
0.5 |
88 |
Show |
|
03199-4514 |
B 1447 |
AB |
257 |
0.6 |
94 |
Show |
|
03200-4514 |
COO 18 |
|
288 |
3.7 |
95 |
Show |
|
03139-4244 |
TDS2488 |
|
239 |
0.7 |
103 |
Show |
|
03066-4259 |
UC 948 |
|
266 |
94.5 |
107 |
Show |
|
03153-4243 |
I 463 |
|
125 |
0.6 |
107 |
Show |
|
03040-4526 |
B 2079 |
|
316 |
7.9 |
109 |
Show |
|
03071-4252 |
DON 45 |
|
271 |
1.7 |
110 |
Show |
|
03217-4514 |
UC 992 |
|
2 |
7.7 |
111 |
Show |
|
03192-4557 |
KPP3518 |
|
71 |
1.6 |
117 |
Show |
|
03106-4621 |
I 1481 |
|
197 |
2.7 |
118 |
Show |
|
03128-4226 |
DON 47 |
|
294 |
0.7 |
120 |
Show |
|
03069-4611 |
TDS2448 |
|
309 |
0.5 |
121 |
Show |
|
03168-4232 |
I 466 |
AB |
347 |
1.2 |
123 |
Show |
|
03168-4232 |
I 466 |
AC |
143 |
31.3 |
123 |
Show |
|
03049-4559 |
TDS2437 |
|
132 |
0.9 |
124 |
Show |
|
03081-4231 |
CPO 3 |
|
266 |
2.4 |
124 |
Show |
|
03186-4239 |
I 56 |
|
257 |
3.9 |
127 |
Show |
|
03113-4631 |
FAL 7 |
|
117 |
15.3 |
127 |
Show |
|
03075-4622 |
TDS2450 |
|
96 |
0.6 |
128 |
Show |
|
03009-4517 |
HDS 384 |
|
200 |
0.3 |
134 |
Show |
|
03206-4611 |
KPP1198 |
|
80 |
9.3 |
137 |
Show |
|
03253-4503 |
HU 1356 |
|
178 |
1.8 |
142 |
Show |
|
03005-4325 |
CPO 115 |
|
185 |
6.6 |
143 |
Show |
|
03246-4540 |
HJ 3576 |
|
342 |
2.8 |
149 |
Show |
|
02586-4444 |
DON 44 |
|
345 |
2.3 |
150 |
Show |
|
03249-4313 |
CBL 121 |
|
192 |
26.7 |
154 |
Show |
|
03262-4524 |
TDS2547 |
|
149 |
1.0 |
158 |
Show |
|
03074-4655 |
TSN 110 |
|
55 |
999.9 |
159 |
Show |
|
02590-4313 |
TVB 45 |
|
229 |
6.0 |
163 |
Show |
|
03273-4359 |
B 1452 |
|
258 |
0.9 |
163 |
Show |
|
03076-4702 |
TOK 206 |
|
195 |
0.3 |
166 |
Show |
|
03136-4712 |
SLR 4 |
|
259 |
0.7 |
167 |
Show |
|
02563-4440 |
DON1060 |
|
351 |
5.6 |
174 |
|
|
WDS 03124-4425 : COMPONENTS
|
A |
B |
B |
pa=0.0°
sep=0.00"
| |
C |
pa=185.6°
sep=3.65"
| pa=186.7°
sep=3.66"
|
03124-4425 A
Coord arcsec 2000 |
031225.68-442510.8 |
|
Mag |
6.42 |
|
Spectral class |
F7III (yellow-white) |
|
PmRA |
92.00 |
|
PmDE |
-6.0 |
|
SAO |
216209 |
|
HIP |
14913 |
|
Tycho2 |
7567-01177-1 |
|
HD |
20121 |
|
HR |
968 |
|
GC |
3845 |
|
CD |
CD-44 1025 |
|
CP |
CP-44 338 |
|
FK5 |
2228 |
|
Tycho2 |
7567-01177-1 |
|
Pflag |
|
|
RAmdeg |
48.10730658 |
|
DEmdeg |
-44.41972130 |
|
PmRA |
92.0 |
|
PmDE |
-6.2 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
0.9 |
|
E pmDE |
0.8 |
|
EpRAm |
1991.28 |
|
EpDEm |
1991.28 |
|
Num |
14 |
|
Q RAmdeg |
1.2 |
|
Q DEmdeg |
2.0 |
|
Q pmRA |
1.3 |
|
Q pmDE |
2.0 |
|
BTmag |
6.574 |
|
E BTmag |
0.014 |
|
VTmag |
6.132 |
|
E VTmag |
0.010 |
|
Prox |
36 |
|
TYC |
T |
|
HIP |
14913 |
|
CCDM |
AB |
|
RAdeg |
48.10700889 |
|
DEdeg |
-44.41970694 |
|
EpRA 1990 |
1.67 |
|
EpDE 1990 |
1.73 |
|
E RAdeg |
3.6 |
|
E DEdeg |
3.5 |
|
Posflg |
P |
|
Corr |
0.1 |
|
SAO |
216209 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0084 |
|
DE1950 |
|
|
PmDE1950 |
0.004 |
|
Vmag |
5.9 |
|
SpType |
F2 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
3845 |
|
DM |
CD-44 1025 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
20121 |
|
M HD |
0 |
|
GC |
3845 |
|
RA1950rad |
0.83196245 |
|
DE1950rad |
-0.7785252 |
|
PmRA2000 |
0.0089 |
|
PmDE2000 |
-0.001 |
|
Catalog |
H |
|
HIP |
14913 |
|
Proxy |
H |
|
RAhms |
03 12 25.68 |
|
DEdms |
-44 25 10.8 |
|
Vmag |
5.92 |
|
VarFlag |
|
|
R Vmag |
G |
|
RAdeg |
48.107 |
|
DEdeg |
-44.4197 |
|
AstroRef |
A |
|
Plx |
22.83 |
|
CCDM |
03124-4425 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
3 |
|
MultFlag |
C |
|
Source |
|
|
Qual |
B |
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
20121 |
|
BD |
|
|
CD |
CD-44 1025 |
|
CP |
CP-44 338 |
|
Dm number |
-44 1025 |
|
VIred |
0.51 |
|
SpType |
F3V+... |
|
R SpType |
|
|
Coord arcsec 2000 |
031225.68-442510.8 |
|
HIP |
14913 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
3 |
|
RArad |
0.8396254644 |
|
DErad |
-0.7752692093 |
|
Plx |
23.53 |
|
PmRA |
81.63 |
|
PmDE |
-4.57 |
|
E RArad |
0.4 |
|
E DErad |
0.69 |
|
E Plx |
0.62 |
|
E pmRA |
0.55 |
|
E pmDE |
0.98 |
|
Hpmag |
6.0359 |
|
E Hpmag |
0.0008 |
|
SHp |
0.007 |
|
VA |
0 |
|
BV |
0.44 |
|
E BV |
0.042 |
|
VI |
0.51 |
|
Ccdm |
03124-4425 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
1.77 |
|
DDEs |
-11.1 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
3 |
|
Vmag |
6.6 |
|
Sp |
F2 |
|
PmNote |
* |
|
PmRA |
92 |
|
PmDE |
-8 |
|
Dm number |
-44 1025 |
|
Cat1 |
CD |
|
Name2 |
216209 |
|
Cat2 |
SAO |
|
HD |
20121 |
|
M HD |
|
|
ADS BDS |
|
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03089S4448A |
|
HIC |
14913 |
|
03124-4425 B
Coord arcsec 2000 |
031225.69-442510.8 |
|
Mag |
7.36 |
|
Spectral class |
A0V (white) |
|
PmRA |
92.00 |
|
PmDE |
-6.0 |
|
Calc delta mag |
0.94 |
|
Calc coord |
yes |
|
Ccdm |
03124-4425 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
* |
|
Note2 |
|
|
Discov num |
JC 8 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1897 |
|
Theta |
|
|
Rho |
|
|
Obs |
99 |
|
Vmag |
7.0 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
|
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03089S4448B |
|
HIC |
14913 |
|
03124-4425 C
Coord arcsec 2000 |
031225.65-442514.4 |
|
Mag |
8.76 |
|
PmRA |
87.00 |
|
PmDE |
-18.0 |
|
Calc delta mag |
2.34 |
|
Calc coord |
yes |
|
Ccdm |
03124-4425 |
|
RComp |
|
|
Comp |
C |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
HJ 3556 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1959 |
|
Theta |
200 |
|
Rho |
3.5 |
|
Obs |
30 |
|
Vmag |
9.0 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
|
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03089S4448C |
|
HIC |
14913 |
|