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JPL Small-Body Database Browser
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17181 (1999 UM3)
Classification: Apollo [NEO]          SPK-ID: 2017181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6735171804342489 5.8062e-08  
a 2.370820639037844 8.0391e-09 au
q .7740322069177511 1.3727e-07 au
i 10.65485472025673 7.6359e-06 deg
node 113.5731587510576 3.4913e-05 deg
peri 36.77477936951858 3.4785e-05 deg
M 203.5660026264752 7.7104e-06 deg
tp 2459579.895500321662
(2021-Dec-31.39550032)
3.0196e-05 TDB
period 1333.357093840391
3.65
6.7818e-06
1.857e-08
d
yr
n .2699951885830621 1.3733e-09 deg/d
Q 3.967609071157937 1.3454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      23319 days (63.84 yr)  
   first obs. used      1955-10-24  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60514  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Aug-29 05:22:17  

Additional Information
 Earth MOID = .0708981 au 
 Jupiter MOID = 1.12845 au 
 T_jup = 3.175 
[ 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 16.4   n/a MPO452414  

17181 (1999 UM3)          Discovered 1999-Oct-19 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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