12564-0057 STT 256 (HD 112398)
12h 56m 26.59s -00° 57' 16.6" P.A. 101.00 sep 1.1 mag 7.33,7.61 Sp F7V dist. 79.62 pc (259.72 l.y.)
| Coord 2000 |
12564-0057 |
|
Discov num |
STT 256 |
|
Comp |
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Coord arcsec 2000 |
12 56 26.59 -00 57 16.6 |
|
| Date first |
1843 |
|
Date last |
2017 |
|
Obs |
206 |
|
| Pa first |
40 |
|
Pa last |
100.7 |
|
P.A. Now (θ) |
100.7° |
|
| Sep first |
0.6 |
|
Sep last |
1.057 |
|
Sep. Now (ρ) |
1.057" |
|
| Mag pri |
7.33 |
|
Mag sec |
7.61 |
|
delta mag (ΔM) |
0.28 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
+027 |
|
Sec motion ra |
+027 |
|
| Pri motion dec |
-092 |
|
Sec motion dec |
-092 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 112398 |
|
Constellation |
Virgo |
|
HIP |
63155 |
|
Tycho2 |
4950-00568-1 |
|
| HD |
112398 |
|
ADS |
8708 |
|
BD |
BD-00 2632 |
|
Distance |
79.62 |
|
| Distance ly |
259.72 |
|
ORBITAL ELEMENTS
| Period (P) | 605y | |
Periastron (T) | 1749.7y | |
Semi-major axis (a) | 1.549a | |
| Eccentricity (e) | 0.9 | |
Inclination (i) | 75° | |
Longitude of periastron (ω) | 108.1° | |
| Node (Ω) | 143.6° | |
Notes | | |
Reference | Zir2015a | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
98.2 |
1.016 |
| 2001 |
98.3 |
1.019 |
| 2002 |
98.5 |
1.022 |
| 2003 |
98.6 |
1.025 |
| 2004 |
98.8 |
1.028 |
| 2005 |
98.9 |
1.032 |
| 2006 |
99.1 |
1.035 |
| 2007 |
99.2 |
1.038 |
| 2008 |
99.4 |
1.041 |
| 2009 |
99.5 |
1.044 |
| 2010 |
99.7 |
1.047 |
| 2011 |
99.8 |
1.050 |
| 2012 |
100.0 |
1.053 |
| 2013 |
100.1 |
1.056 |
| 2014 |
100.3 |
1.059 |
| 2015 |
100.4 |
1.062 |
| 2016 |
100.5 |
1.065 |
| 2017 |
100.7 |
1.068 |
| 2018 |
100.8 |
1.071 |
| 2019 |
101.0 |
1.074 |
| 2020 |
101.1 |
1.077 |
| 2021 |
101.2 |
1.080 |
| 2022 |
101.4 |
1.083 |
| 2023 |
101.5 |
1.086 |
| 2024 |
101.7 |
1.089 |
| 2025 |
101.8 |
1.092 |
| 2026 |
101.9 |
1.095 |
| 2027 |
102.1 |
1.098 |
| 2028 |
102.2 |
1.100 |
| 2029 |
102.3 |
1.103 |
| 2030 |
102.5 |
1.106 |
| 2031 |
102.6 |
1.109 |
| 2032 |
102.7 |
1.112 |
| 2033 |
102.8 |
1.115 |
| 2034 |
103.0 |
1.117 |
| 2035 |
103.1 |
1.120 |
| 2036 |
103.2 |
1.123 |
| 2037 |
103.4 |
1.126 |
| 2038 |
103.5 |
1.129 |
| 2039 |
103.6 |
1.131 |
| 2040 |
103.7 |
1.134 |
| 2041 |
103.9 |
1.137 |
| 2042 |
104.0 |
1.139 |
| 2043 |
104.1 |
1.142 |
| 2044 |
104.2 |
1.145 |
| 2045 |
104.4 |
1.147 |
| 2046 |
104.5 |
1.150 |
| 2047 |
104.6 |
1.153 |
| 2048 |
104.7 |
1.155 |
| 2049 |
104.8 |
1.158 |
| 2050 |
105.0 |
1.161 |
|
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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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