01398-5612 DUN 5 (p Eri)
01h 39m 47.83s -56° 11' 36.0" P.A. 186.00 sep 11.3 mag 5.78,5.90 Sp K0V+K5V dist. 7.82 pc (25.51 l.y.)
Coord 2000 |
01398-5612 |
|
Discov num |
DUN 5 |
|
Comp |
|
|
Coord arcsec 2000 |
01 39 47.83 -56 11 36.0 |
|
Date first |
1825 |
|
Date last |
2019 |
|
Obs |
177 |
|
Pa first |
343 |
|
Pa last |
186 |
|
P.A. Now (θ) |
186° |
|
Sep first |
2.5 |
|
Sep last |
11.283 |
|
Sep. Now (ρ) |
11.283" |
|
Mag pri |
5.78 |
|
Mag sec |
5.90 |
|
delta mag (ΔM) |
0.12 |
|
Spectral class |
K0V+K5V (yellow-orange/yellow-orange) |
|
Pri motion ra |
+262 |
|
Sec motion ra |
+309 |
|
Pri motion dec |
+015 |
|
Sec motion dec |
+011 |
|
Notes |
N
O
T
(See Notes, Orbital solution, Parallax indicates physical) |
|
rPM=0.153 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Var name |
p Eri |
|
Constellation |
Eridanus |
|
SAO |
232490 |
|
HIP |
7751 |
|
Tycho2 |
8478-01394-2 |
|
Gaia DR2 |
4911306239828325632 |
|
HD |
10361 |
|
HR |
486 |
|
GC |
2030 |
|
GL |
Gl 66B |
|
CD |
CD-56 328 |
|
CP |
CP-56 329 |
|
Distance |
7.82 |
|
Distance ly |
25.51 |
|
ORBITAL ELEMENTS
Period (P) | 493.3y | |
Periastron (T) | 1811.9y | |
Semi-major axis (a) | 7.98a | |
Eccentricity (e) | 0.499 | |
Inclination (i) | 139.6° | |
Longitude of periastron (ω) | 24.9° | |
Node (Ω) | 16.5° | |
Notes | n | |
Reference | Sca2018e | |
Equinox | 2000 | |
Last observation | 2016 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
190.4 |
11.420 |
2001 |
190.2 |
11.433 |
2002 |
190.0 |
11.446 |
2003 |
189.7 |
11.458 |
2004 |
189.5 |
11.470 |
2005 |
189.3 |
11.482 |
2006 |
189.0 |
11.493 |
2007 |
188.8 |
11.503 |
2008 |
188.6 |
11.514 |
2009 |
188.3 |
11.523 |
2010 |
188.1 |
11.533 |
2011 |
187.9 |
11.542 |
2012 |
187.6 |
11.550 |
2013 |
187.4 |
11.559 |
2014 |
187.2 |
11.566 |
2015 |
187.0 |
11.574 |
2016 |
186.7 |
11.581 |
2017 |
186.5 |
11.587 |
2018 |
186.3 |
11.593 |
2019 |
186.0 |
11.599 |
2020 |
185.8 |
11.604 |
2021 |
185.6 |
11.609 |
2022 |
185.4 |
11.613 |
2023 |
185.1 |
11.618 |
2024 |
184.9 |
11.621 |
2025 |
184.7 |
11.624 |
2026 |
184.4 |
11.627 |
2027 |
184.2 |
11.630 |
2028 |
184.0 |
11.632 |
2029 |
183.8 |
11.633 |
2030 |
183.5 |
11.635 |
2031 |
183.3 |
11.636 |
2032 |
183.1 |
11.636 |
2033 |
182.9 |
11.636 |
2034 |
182.6 |
11.636 |
2035 |
182.4 |
11.635 |
2036 |
182.2 |
11.634 |
2037 |
182.0 |
11.633 |
2038 |
181.7 |
11.631 |
2039 |
181.5 |
11.628 |
2040 |
181.3 |
11.626 |
2041 |
181.0 |
11.623 |
2042 |
180.8 |
11.619 |
2043 |
180.6 |
11.616 |
2044 |
180.4 |
11.611 |
2045 |
180.1 |
11.607 |
2046 |
179.9 |
11.602 |
2047 |
179.7 |
11.597 |
2048 |
179.5 |
11.591 |
2049 |
179.2 |
11.585 |
2050 |
179.0 |
11.578 |
|
|

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|

Measures: green=micrometric, blue=interferometric, purple=photographic |
|