02280+0158 KUI 8 (HD 15328)
02h 27m 59.93s +01° 57' 39.1" P.A. 37.00 sep 0.5 mag 7.09,7.63 Sp K0III dist. 166.67 pc (543.68 l.y.)
| Coord 2000 |
02280+0158 |
|
Discov num |
KUI 8 |
|
Comp |
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Coord arcsec 2000 |
02 27 59.93 +01 57 39.1 |
|
| Date first |
1937 |
|
Date last |
2018 |
|
Obs |
132 |
|
| Pa first |
20 |
|
Pa last |
37.3 |
|
P.A. Now (θ) |
37.3° |
|
| Sep first |
0.3 |
|
Sep last |
0.48 |
|
Sep. Now (ρ) |
0.48" |
|
| Mag pri |
7.09 |
|
Mag sec |
7.63 |
|
delta mag (ΔM) |
0.54 |
|
Spectral class |
K0III (yellow-orange) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
-014 |
|
Sec motion dec |
-014 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 15328 |
|
Constellation |
Cetus |
|
SAO |
110542 |
|
HIP |
11474 |
|
| Tycho2 |
0039-01123-1 |
|
HD |
15328 |
|
HR |
719 |
|
GC |
2959 |
|
| BD |
BD+01 431 |
|
Distance |
166.67 |
|
Distance ly |
543.68 |
|
ORBITAL ELEMENTS
| Period (P) | 653y | |
Periastron (T) | 1922.3y | |
Semi-major axis (a) | 0.769a | |
| Eccentricity (e) | 0.545 | |
Inclination (i) | 79.9° | |
Longitude of periastron (ω) | 291.4° | |
| Node (Ω) | 28.6° | |
Notes | | |
Reference | Zir2013a | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
36.5 |
0.509 |
| 2001 |
36.7 |
0.508 |
| 2002 |
36.9 |
0.507 |
| 2003 |
37.1 |
0.506 |
| 2004 |
37.3 |
0.505 |
| 2005 |
37.5 |
0.504 |
| 2006 |
37.7 |
0.503 |
| 2007 |
37.9 |
0.501 |
| 2008 |
38.1 |
0.500 |
| 2009 |
38.2 |
0.499 |
| 2010 |
38.4 |
0.497 |
| 2011 |
38.6 |
0.496 |
| 2012 |
38.8 |
0.494 |
| 2013 |
39.0 |
0.493 |
| 2014 |
39.2 |
0.491 |
| 2015 |
39.4 |
0.489 |
| 2016 |
39.6 |
0.487 |
| 2017 |
39.8 |
0.486 |
| 2018 |
40.0 |
0.484 |
| 2019 |
40.2 |
0.482 |
| 2020 |
40.4 |
0.480 |
| 2021 |
40.7 |
0.478 |
| 2022 |
40.9 |
0.476 |
| 2023 |
41.1 |
0.474 |
| 2024 |
41.3 |
0.472 |
| 2025 |
41.5 |
0.469 |
| 2026 |
41.7 |
0.467 |
| 2027 |
41.9 |
0.465 |
| 2028 |
42.2 |
0.463 |
| 2029 |
42.4 |
0.460 |
| 2030 |
42.6 |
0.458 |
| 2031 |
42.9 |
0.456 |
| 2032 |
43.1 |
0.453 |
| 2033 |
43.3 |
0.451 |
| 2034 |
43.6 |
0.448 |
| 2035 |
43.8 |
0.446 |
| 2036 |
44.0 |
0.443 |
| 2037 |
44.3 |
0.441 |
| 2038 |
44.5 |
0.438 |
| 2039 |
44.8 |
0.435 |
| 2040 |
45.0 |
0.433 |
| 2041 |
45.3 |
0.430 |
| 2042 |
45.6 |
0.427 |
| 2043 |
45.8 |
0.425 |
| 2044 |
46.1 |
0.422 |
| 2045 |
46.4 |
0.419 |
| 2046 |
46.6 |
0.416 |
| 2047 |
46.9 |
0.414 |
| 2048 |
47.2 |
0.411 |
| 2049 |
47.5 |
0.408 |
| 2050 |
47.8 |
0.405 |
|
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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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