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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6738419556060331 5.7326e-08  
a 2.370486970887192 8.0467e-09 au
q .7731533946859448 1.3548e-07 au
i 10.65488734313028 6.9271e-06 deg
node 113.573200599204 3.3855e-05 deg
peri 36.77794025101463 3.3668e-05 deg
M 257.5982336013402 7.735e-06 deg
tp 2459579.692494999427
(2021-Dec-31.19249500)
2.9748e-05 TDB
period 1333.075619695368
3.65
6.7878e-06
1.858e-08
d
yr
n .2700521971006164 1.3751e-09 deg/d
Q 3.967820547088439 1.3469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      23734 days (64.98 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61389  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:56:37  

Additional Information
 Earth MOID = .0713912 au 
 Jupiter MOID = 1.12768 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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