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AstDyS ∴ Objects ∴ Sirene ∴ Summary
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(1009) Sirene  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 2.62374 4.062e-09 au
e 0.456153 6.864e-08
i 15.775 8.734e-06 deg
Ω 229.457 2.676e-05 deg
ω 186.387 2.802e-05 deg
M 104.286 1.019e-05 deg

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Other useful info
Absolute Magnitude (H)    13.9 mag
Slope parameter (G)    0.15 mag
Perihelion 1.4269 au
Aphelion 3.8206 au
Asc. node-Earth separation 2.78942 au
Desc. node-Earth separation 0.4396 au
Earth MOID 0.43853 au
Orbital period 1552.32 days
Date of orbit computation  Oct 31 04:55
Observational summary
Optical observations (Discarded) 851 (16)
Radar observations (Discarded) 0 (0)
Arc length 34551.3 days
Unobserved 291 days

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Ephemeris at epoch 58567 MJD
Right Ascension 228.621 deg
Declination -21.3396 deg
V Magnitude 19.81 mag
Solar Elongation 131.79 deg
Galactic Latitude 30.45 deg
Rate 0.105 deg/day
Direction -62.394 deg

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