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JPL Small-Body Database Browser
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305555 (2008 UM217)
Classification: Main-belt Asteroid          SPK-ID: 2305555
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828550176448893 6.2158e-08  
a 2.229675196713534 2.1646e-08 au
q 1.821967899276109 1.4926e-07 au
i 5.420577124048285 6.5253e-06 deg
node 257.0584907069963 6.3023e-05 deg
peri 20.34931955970315 6.6039e-05 deg
M 160.685816186244 2.2129e-05 deg
tp 2458057.704956533936
(2017-Oct-31.20495653)
7.0164e-05 TDB
period 1216.076317658903
3.33
1.7709e-05
4.848e-08
d
yr
n .2960340521169299 4.3109e-09 deg/d
Q 2.637382494150959 2.5604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      6318 days (17.30 yr)  
   first obs. used      2001-08-25  
   last obs. used      2018-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55301  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:31:05  

Additional Information
 Earth MOID = .806207 au 
 Jupiter MOID = 2.48252 au 
 T_jup = 3.615 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO460267  

305555 (2008 UM217)          Discovered 2008-Oct-25 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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