00093+7943 STF 2 (HD 431)
00h 09m 20.18s +79° 42' 52.4" P.A. 15.00 sep 0.9 mag 6.68,6.89 Sp A4IV dist. 105.49 pc (344.11 l.y.)
| Coord 2000 |
00093+7943 |
|
Discov num |
STF 2 |
|
Comp |
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Coord arcsec 2000 |
00 09 20.18 +79 42 52.4 |
|
| Date first |
1828 |
|
Date last |
2019 |
|
Obs |
213 |
|
| Pa first |
343 |
|
Pa last |
14.6 |
|
P.A. Now (θ) |
13.9° |
|
| Sep first |
0.8 |
|
Sep last |
0.94 |
|
Sep. Now (ρ) |
0.959" |
|
| Mag pri |
6.68 |
|
Mag sec |
6.89 |
|
delta mag (ΔM) |
0.21 |
|
Spectral class |
A4IV (white) |
|
| Pri motion ra |
+106 |
|
Sec motion ra |
+106 |
|
| Pri motion dec |
-033 |
|
Sec motion dec |
-033 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 431 |
|
Constellation |
Cepheus |
|
SAO |
4048 |
|
HIP |
760 |
|
| Tycho2 |
4500-01334-1 |
|
Gaia DR2 |
565004017238715264 |
|
HD |
431 |
|
HR |
20 |
|
| GC |
149 |
|
ADS |
102 |
|
BD |
BD+78 1 |
|
Distance |
105.49 |
|
| Distance ly |
344.11 |
|
ORBITAL ELEMENTS
| Period (P) | 540y | |
Periastron (T) | 1887.5y | |
Semi-major axis (a) | 0.995a | |
| Eccentricity (e) | 0.715 | |
Inclination (i) | 110.1° | |
Longitude of periastron (ω) | 333.7° | |
| Node (Ω) | 171.2° | |
Notes | n | |
Reference | Hei1997 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
18.7 |
0.788 |
| 2001 |
18.5 |
0.796 |
| 2002 |
18.2 |
0.804 |
| 2003 |
18.0 |
0.812 |
| 2004 |
17.8 |
0.819 |
| 2005 |
17.5 |
0.827 |
| 2006 |
17.3 |
0.835 |
| 2007 |
17.1 |
0.842 |
| 2008 |
16.9 |
0.850 |
| 2009 |
16.6 |
0.857 |
| 2010 |
16.4 |
0.865 |
| 2011 |
16.2 |
0.872 |
| 2012 |
16.0 |
0.880 |
| 2013 |
15.8 |
0.887 |
| 2014 |
15.6 |
0.895 |
| 2015 |
15.4 |
0.902 |
| 2016 |
15.2 |
0.909 |
| 2017 |
15.0 |
0.916 |
| 2018 |
14.8 |
0.924 |
| 2019 |
14.7 |
0.931 |
| 2020 |
14.5 |
0.938 |
| 2021 |
14.3 |
0.945 |
| 2022 |
14.1 |
0.952 |
| 2023 |
13.9 |
0.959 |
| 2024 |
13.8 |
0.966 |
| 2025 |
13.6 |
0.973 |
| 2026 |
13.4 |
0.980 |
| 2027 |
13.3 |
0.987 |
| 2028 |
13.1 |
0.993 |
| 2029 |
13.0 |
1.000 |
| 2030 |
12.8 |
1.007 |
| 2031 |
12.6 |
1.014 |
| 2032 |
12.5 |
1.020 |
| 2033 |
12.3 |
1.027 |
| 2034 |
12.2 |
1.034 |
| 2035 |
12.0 |
1.040 |
| 2036 |
11.9 |
1.047 |
| 2037 |
11.7 |
1.053 |
| 2038 |
11.6 |
1.059 |
| 2039 |
11.5 |
1.066 |
| 2040 |
11.3 |
1.072 |
| 2041 |
11.2 |
1.079 |
| 2042 |
11.1 |
1.085 |
| 2043 |
10.9 |
1.091 |
| 2044 |
10.8 |
1.097 |
| 2045 |
10.7 |
1.103 |
| 2046 |
10.5 |
1.110 |
| 2047 |
10.4 |
1.116 |
| 2048 |
10.3 |
1.122 |
| 2049 |
10.1 |
1.128 |
| 2050 |
10.0 |
1.134 |
|
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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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