11317+1422 STF 1547 AB (88 Leo)
11h 31m 44.94s +14° 21' 52.2" P.A. 330.00 sep 15.7 mag 6.33,9.14 Sp G0V+G5 dist. 23.33 pc (76.1 l.y.)
Coord 2000 |
11317+1422 |
|
Discov num |
STF1547 |
|
Comp |
AB |
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Coord arcsec 2000 |
11 31 44.94 +14 21 52.2 |
|
Date first |
1782 |
|
Date last |
2020 |
|
Obs |
115 |
|
Pa first |
318 |
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Pa last |
330.4 |
|
P.A. Now (θ) |
330.4° |
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Sep first |
14.6 |
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Sep last |
15.68 |
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Sep. Now (ρ) |
15.68" |
|
Mag pri |
6.33 |
|
Mag sec |
9.14 |
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delta mag (ΔM) |
2.81 |
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Spectral class |
G0V+G5 (yellow/yellow) |
|
Pri motion ra |
-330 |
|
Sec motion ra |
-316 |
|
Pri motion dec |
-190 |
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Sec motion dec |
-181 |
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Notes |
N
O
V
(See Notes, Orbital solution, Proper motion indicates physical) |
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rPM=0.044 (< 0.3, Physical double)
This double is physical.
11317+1422 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
99648 |
11 31 45 +14 21 52 |
WSI 101 Aa,Ab |
2008 |
3 |
15 |
0.2 |
7.00 |
7.10 |
0.10 |
|
|
Show |
88 Leo |
99648 |
11 31 45 +14 21 52 |
STF 1547 AB |
2020 |
115 |
330 |
15.7 |
6.33 |
9.14 |
2.81 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
88 Leo |
|
Constellation |
Leo |
|
SAO |
99648 |
|
HIP |
56242 |
|
Tycho2 |
0862-01208-1 |
|
HD |
100180 |
|
HR |
4437 |
|
GC |
15811 |
|
ADS |
8196 |
|
GL |
NN 3669A |
|
BD |
BD+15 2345 |
|
Flamsteed |
88 Leonis |
|
Flamsteed name |
88 Leo |
|
Distance |
23.33 |
|
Distance ly |
76.1 |
|
ORBITAL ELEMENTS
Period (P) | 3453y | |
Periastron (T) | 1228y | |
Semi-major axis (a) | 16.25a | |
Eccentricity (e) | 0.2 | |
Inclination (i) | 58° | |
Longitude of periastron (ω) | 100° | |
Node (Ω) | 138° | |
Notes | n | |
Reference | Hrt2013b | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
330.9 |
15.402 |
2001 |
331.0 |
15.399 |
2002 |
331.1 |
15.397 |
2003 |
331.1 |
15.394 |
2004 |
331.2 |
15.391 |
2005 |
331.2 |
15.389 |
2006 |
331.3 |
15.386 |
2007 |
331.4 |
15.383 |
2008 |
331.4 |
15.381 |
2009 |
331.5 |
15.378 |
2010 |
331.5 |
15.375 |
2011 |
331.6 |
15.372 |
2012 |
331.7 |
15.369 |
2013 |
331.7 |
15.367 |
2014 |
331.8 |
15.364 |
2015 |
331.8 |
15.361 |
2016 |
331.9 |
15.358 |
2017 |
332.0 |
15.355 |
2018 |
332.0 |
15.352 |
2019 |
332.1 |
15.348 |
2020 |
332.1 |
15.345 |
2021 |
332.2 |
15.342 |
2022 |
332.3 |
15.339 |
2023 |
332.3 |
15.336 |
2024 |
332.4 |
15.333 |
2025 |
332.4 |
15.329 |
2026 |
332.5 |
15.326 |
2027 |
332.6 |
15.323 |
2028 |
332.6 |
15.319 |
2029 |
332.7 |
15.316 |
2030 |
332.8 |
15.312 |
|
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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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