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JPL Small-Body Database Browser
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442697 (2012 UT99)
Classification: Main-belt Asteroid          SPK-ID: 2442697
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320424485208966 6.9624e-08  
a 2.232762815227689 2.1895e-08 au
q 1.937943346138614 1.6352e-07 au
i 4.64407520244086 7.6407e-06 deg
node 189.6955911221384 7.8456e-05 deg
peri 206.0941506175403 8.7523e-05 deg
M 344.2039084150294 3.9464e-05 deg
tp 2458653.969910270020
(2019-Jun-19.46991027)
0.00013407 TDB
period 1218.603196471857
3.34
1.7925e-05
4.908e-08
d
yr
n .295420199981655 4.3455e-09 deg/d
Q 2.527582284316763 2.4787e-08 au
  Orbit Determination Parameters
   # obs. used (total)      92  
   data-arc span      8897 days (24.36 yr)  
   first obs. used      1992-11-16  
   last obs. used      2017-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .603  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:26:08  

Additional Information
 Earth MOID = .94492 au 
 Jupiter MOID = 2.87654 au 
 T_jup = 3.625 
[ 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 18.1   n/a MPO402748  

442697 (2012 UT99)          Discovered 2007-Mar-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 UT99 = 2007 EN30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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