03124-4425 JC 8 AB
03h 12m 25.68s -44° 25' 10.8" P.A. 90.00 sep 0.1 mag 6.42,7.36 Sp F7III+A0V dist. 42.5 pc (138.64 l.y.)
Coord 2000 |
03124-4425 |
|
Discov num |
JC 8 |
|
Comp |
AB |
|
Coord arcsec 2000 |
03 12 25.68 -44 25 10.8 |
|
Date first |
1895 |
|
Date last |
2021 |
|
Obs |
125 |
|
Pa first |
190 |
|
Pa last |
90 |
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P.A. Now (θ) |
276.9° |
|
Sep first |
0.5 |
|
Sep last |
0.096 |
|
Sep. Now (ρ) |
0.064" |
|
Mag pri |
6.42 |
|
Mag sec |
7.36 |
|
delta mag (ΔM) |
0.94 |
|
Spectral class |
F7III+A0V (yellow-white/white) |
|
Pri motion ra |
+092 |
|
Sec motion ra |
+092 |
|
Pri motion dec |
-006 |
|
Sec motion dec |
-006 |
|
Notes |
N
O
(See Notes, Orbital solution) |
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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 |
|
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Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Eridanus |
|
SAO |
216209 |
|
HIP |
14913 |
|
Tycho2 |
7567-01177-1 |
|
Gaia DR2 |
4850405974392311168 |
|
HD |
20121 |
|
HR |
968 |
|
GC |
3845 |
|
CD |
CD-44 1025 |
|
CP |
CP-44 338 |
|
FK5 |
2228 |
|
Distance |
42.5 |
|
Distance ly |
138.64 |
|
ORBITAL ELEMENTS
Period (P) | 45.2y | |
Periastron (T) | 1977.5y | |
Semi-major axis (a) | 0.41a | |
Eccentricity (e) | 0.9 | |
Inclination (i) | 165° | |
Longitude of periastron (ω) | 118° | |
Node (Ω) | 110° | |
Notes | n | |
Reference | Sod1999 | |
Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
171.3 |
0.758 |
2001 |
170.3 |
0.758 |
2002 |
169.3 |
0.756 |
2003 |
168.3 |
0.751 |
2004 |
167.3 |
0.745 |
2005 |
166.3 |
0.737 |
2006 |
165.2 |
0.727 |
2007 |
164.1 |
0.714 |
2008 |
163.0 |
0.700 |
2009 |
161.8 |
0.683 |
2010 |
160.6 |
0.664 |
2011 |
159.3 |
0.642 |
2012 |
157.9 |
0.618 |
2013 |
156.3 |
0.591 |
2014 |
154.6 |
0.560 |
2015 |
152.7 |
0.527 |
2016 |
150.5 |
0.489 |
2017 |
147.9 |
0.447 |
2018 |
144.8 |
0.399 |
2019 |
140.7 |
0.345 |
2020 |
134.9 |
0.282 |
2021 |
125.3 |
0.206 |
2022 |
101.2 |
0.110 |
2023 |
276.9 |
0.064 |
2024 |
225.5 |
0.166 |
2025 |
211.9 |
0.246 |
2026 |
204.7 |
0.312 |
2027 |
199.8 |
0.369 |
2028 |
196.2 |
0.419 |
2029 |
193.3 |
0.463 |
2030 |
190.8 |
0.503 |
|
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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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