11190+1416 STF 1527 (HD 98354)
11h 18m 59.91s +14° 16' 06.9" P.A. 308.00 sep 0.5 mag 7.01,7.99 Sp F9V dist. 30.74 pc (100.27 l.y.)
| Coord 2000 |
11190+1416 |
|
Discov num |
STF1527 |
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Comp |
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Coord arcsec 2000 |
11 18 59.91 +14 16 06.9 |
|
| Date first |
1822 |
|
Date last |
2021 |
|
Obs |
288 |
|
| Pa first |
10 |
|
Pa last |
307.6 |
|
P.A. Now (θ) |
314.6° |
|
| Sep first |
3.7 |
|
Sep last |
0.513 |
|
Sep. Now (ρ) |
0.587" |
|
| Mag pri |
7.01 |
|
Mag sec |
7.99 |
|
delta mag (ΔM) |
0.98 |
|
Spectral class |
F9V (yellow-white) |
|
| Pri motion ra |
+054 |
|
Sec motion ra |
+054 |
|
| Pri motion dec |
-161 |
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Sec motion dec |
-161 |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 98354 |
|
Constellation |
Leo |
|
SAO |
99551 |
|
HIP |
55254 |
|
| Tycho2 |
0861-00454-1 |
|
Gaia DR2 |
3966863615999041536 |
|
HD |
98354 |
|
GC |
15557 |
|
| ADS |
8128 |
|
BD |
BD+15 2321 |
|
Distance |
30.74 |
|
Distance ly |
100.27 |
|
ORBITAL ELEMENTS
| Period (P) | 415y | ± 15.9 |
Periastron (T) | 2010.503y | ± 0.042 |
Semi-major axis (a) | 2.225a | ± 0.045 |
| Eccentricity (e) | 0.8511 | ± 0.0033 |
Inclination (i) | 55.6° | ± 0.5 |
Longitude of periastron (ω) | 0.5° | ± 0.59 |
| Node (Ω) | 188° | ± 0.5 |
Notes | n | |
Reference | Tok2012b | |
| Equinox | 2000 | |
Last observation | 2012 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
71.8 |
0.487 |
| 2001 |
77.7 |
0.442 |
| 2002 |
84.9 |
0.400 |
| 2003 |
93.7 |
0.363 |
| 2004 |
104.3 |
0.333 |
| 2005 |
116.7 |
0.312 |
| 2006 |
130.3 |
0.302 |
| 2007 |
144.3 |
0.303 |
| 2008 |
157.9 |
0.311 |
| 2009 |
170.5 |
0.323 |
| 2010 |
182.4 |
0.330 |
| 2011 |
194.1 |
0.330 |
| 2012 |
206.1 |
0.321 |
| 2013 |
218.9 |
0.309 |
| 2014 |
232.8 |
0.299 |
| 2015 |
247.1 |
0.299 |
| 2016 |
260.9 |
0.310 |
| 2017 |
273.4 |
0.332 |
| 2018 |
284.0 |
0.363 |
| 2019 |
292.7 |
0.402 |
| 2020 |
299.9 |
0.445 |
| 2021 |
305.7 |
0.491 |
| 2022 |
310.5 |
0.538 |
| 2023 |
314.6 |
0.587 |
| 2024 |
318.0 |
0.636 |
| 2025 |
320.9 |
0.686 |
| 2026 |
323.4 |
0.735 |
| 2027 |
325.6 |
0.784 |
| 2028 |
327.6 |
0.832 |
| 2029 |
329.3 |
0.880 |
| 2030 |
330.9 |
0.927 |
|
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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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