AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ Portlandia ∴ Summary
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(757) Portlandia  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.37376 4.524e-09 au
e 0.108071 2.515e-08
i 8.171 3.147e-06 deg
Ω 22.431 1.817e-05 deg
ω 44.128 2.198e-05 deg
M 168.422 1.288e-05 deg

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Other useful info
Absolute Magnitude (H)    10.1 mag
Slope parameter (G)    0.15 mag
Perihelion 2.1172 au
Aphelion 2.6303 au
Asc. node-Earth separation 1.18092 au
Desc. node-Earth separation 1.54078 au
Earth MOID 1.13848 au
Orbital period 1335.84 days
Date of orbit computation  apr 23 19:46
Observational summary
Optical observations (Discarded) 4508 (45)
Radar observations (Discarded) 0 (0)
Arc length 42175.3 days
Unobserved 34 days

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Ephemeris at epoch 60426 MJD
Right Ascension 255.317 deg
Declination -30.5594 deg
V Magnitude 14.31 mag
Solar Elongation 138.05 deg
Galactic Latitude 7.04 deg
Rate 0.121 deg/day
Direction -121.502 deg

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