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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ Irma ∴ Summary
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(177) Irma  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 2.77376 7.423e-09 au
e 0.235207 3.048e-08
i 1.383 4.106e-06 deg
Ω 347.36 0.0001452 deg
ω 38.607 0.0001454 deg
M 212.832 9.062e-06 deg

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Other useful info
Absolute Magnitude (H)    9.7 mag
Slope parameter (G)    0.15 mag
Perihelion 2.1214 au
Aphelion 3.4262 au
Asc. node-Earth separation 1.20624 au
Desc. node-Earth separation 2.21637 au
Earth MOID 1.12512 au
Orbital period 1687.34 days
Date of orbit computation  Oct 31 04:54
Observational summary
Optical observations (Discarded) 2616 (94)
Radar observations (Discarded) 0 (0)
Arc length 51417.2 days
Unobserved 212 days

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Ephemeris at epoch 58561 MJD
Right Ascension 269.844 deg
Declination -24.8712 deg
V Magnitude 15.49 mag
Solar Elongation 87.98 deg
Galactic Latitude -0.57 deg
Rate 0.188 deg/day
Direction 92.281 deg

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