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442442 (2011 UD169)
Classification: Mars-crossing Asteroid          SPK-ID: 2442442
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4512020653541124 5.8241e-08  
a 2.601611271087139 6.5246e-08 au
q 1.427758892324084 1.6149e-07 au
i 5.895329842151961 5.9382e-06 deg
node 169.8196055810737 4.9614e-05 deg
peri 149.3890484453892 6.1061e-05 deg
M 66.36441222304778 1.3585e-05 deg
tp 2458717.950341626282
(2019-Aug-22.45034163)
6.7037e-05 TDB
period 1532.717214049439
4.20
5.7659e-05
1.579e-07
d
yr
n .2348769862438486 8.8358e-09 deg/d
Q 3.775463649850193 9.4685e-08 au
  Orbit Determination Parameters
   # obs. used (total)      375  
   data-arc span      4986 days (13.65 yr)  
   first obs. used      2006-04-02  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50112  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:10:54  

Additional Information
 Earth MOID = .419601 au 
 Jupiter MOID = 1.59835 au 
 T_jup = 3.255 
[ 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 17.2   n/a MPO349189  

442442 (2011 UD169)          Discovered 2006-Apr-02 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

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