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227878 (2007 EH22)
Classification: Main-belt Asteroid          SPK-ID: 2227878
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617158596957086 5.5693e-08  
a 2.365422541511926 1.4433e-08 au
q 1.982896201667717 1.3002e-07 au
i 2.118230918001652 5.7689e-06 deg
node 201.8510193175193 0.00015341 deg
peri 349.0413380573025 0.00015425 deg
M 271.0396547010858 1.7515e-05 deg
tp 2459528.863958673337
(2021-Nov-10.36395867)
6.5926e-05 TDB
period 1328.805826070061
3.64
1.2162e-05
3.33e-08
d
yr
n .2709199440107055 2.4796e-09 deg/d
Q 2.747948881356135 1.6767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      9595 days (26.27 yr)  
   first obs. used      1994-10-12  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:12:24  

Additional Information
 Earth MOID = .98235 au 
 Jupiter MOID = 2.20841 au 
 T_jup = 3.530 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   n/a MPO440188  

227878 (2007 EH22)          Discovered 2007-Mar-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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