11514+1148 HDS 1672 (HD 102988)
11h 51m 24.85s +11° 48' 18.6" P.A. 131.00 sep 0.4 mag 7.18,10.92 Sp F6V dist. 52.69 pc (171.87 l.y.)
| Coord 2000 |
11514+1148 |
|
Discov num |
HDS1672 |
|
Comp |
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Coord arcsec 2000 |
11 51 24.85 +11 48 18.6 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
13 |
|
| Pa first |
183 |
|
Pa last |
130.6 |
|
P.A. Now (θ) |
130.6° |
|
| Sep first |
0.4 |
|
Sep last |
0.352 |
|
Sep. Now (ρ) |
0.352" |
|
| Mag pri |
7.18 |
|
Mag sec |
10.92 |
|
delta mag (ΔM) |
3.74 |
|
Spectral class |
F6V (yellow-white) |
|
| Pri motion ra |
-221 |
|
Sec motion ra |
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| Pri motion dec |
+002 |
|
Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 102988 |
|
Constellation |
Leo |
|
SAO |
99829 |
|
HIP |
57821 |
|
| Tycho2 |
0867-00523-1 |
|
HD |
102988 |
|
GC |
16232 |
|
BD |
BD+12 2388 |
|
| Distance |
52.69 |
|
Distance ly |
171.87 |
|
ORBITAL ELEMENTS
| Period (P) | 53.24y | |
Periastron (T) | 2008.921y | |
Semi-major axis (a) | 0.332a | |
| Eccentricity (e) | 0.784 | |
Inclination (i) | 42° | |
Longitude of periastron (ω) | 100° | |
| Node (Ω) | 236.4° | |
Notes | | |
Reference | Tok2018e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
195.3 |
0.340 |
| 2001 |
198.5 |
0.322 |
| 2002 |
202.0 |
0.303 |
| 2003 |
206.0 |
0.281 |
| 2004 |
210.8 |
0.255 |
| 2005 |
216.8 |
0.225 |
| 2006 |
224.8 |
0.190 |
| 2007 |
237.0 |
0.146 |
| 2008 |
262.5 |
0.091 |
| 2009 |
348.9 |
0.055 |
| 2010 |
51.7 |
0.105 |
| 2011 |
73.4 |
0.149 |
| 2012 |
86.0 |
0.183 |
| 2013 |
94.9 |
0.211 |
| 2014 |
101.8 |
0.235 |
| 2015 |
107.5 |
0.257 |
| 2016 |
112.3 |
0.276 |
| 2017 |
116.5 |
0.294 |
| 2018 |
120.3 |
0.310 |
| 2019 |
123.7 |
0.325 |
| 2020 |
126.9 |
0.338 |
| 2021 |
129.7 |
0.351 |
| 2022 |
132.4 |
0.363 |
| 2023 |
135.0 |
0.374 |
| 2024 |
137.4 |
0.384 |
| 2025 |
139.7 |
0.393 |
| 2026 |
141.8 |
0.401 |
| 2027 |
143.9 |
0.409 |
| 2028 |
146.0 |
0.416 |
| 2029 |
147.9 |
0.422 |
| 2030 |
149.8 |
0.427 |
|
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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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