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 |
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Discov num |
HDS1672 |
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Comp |
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Coord arcsec 2000 |
11 51 24.85 +11 48 18.6 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
13 |
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Pa first |
183 |
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Pa last |
130.6 |
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P.A. Now (θ) |
130.6° |
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Sep first |
0.4 |
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Sep last |
0.352 |
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Sep. Now (ρ) |
0.352" |
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Mag pri |
7.18 |
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Mag sec |
10.92 |
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delta mag (ΔM) |
3.74 |
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Spectral class |
F6V (yellow-white) |
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Pri motion ra |
-221 |
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Sec motion ra |
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Pri motion dec |
+002 |
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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 |
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Constellation |
Leo |
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SAO |
99829 |
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HIP |
57821 |
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Tycho2 |
0867-00523-1 |
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HD |
102988 |
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GC |
16232 |
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BD |
BD+12 2388 |
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Distance |
52.69 |
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Distance ly |
171.87 |
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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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