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118440 (1999 UM37)
Classification: Main-belt Asteroid          SPK-ID: 2118440
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1462484160004034 4.3331e-08  
a 3.099235344306141 2.4174e-08 au
q 2.645977084388903 1.3583e-07 au
i 2.104034656547333 5.1143e-06 deg
node 59.31343260965286 0.000148 deg
peri 207.2193637217393 0.00014944 deg
M 11.6321896195418 1.8858e-05 deg
tp 2458936.106914798511
(2020-Mar-27.60691480)
0.00010438 TDB
period 1992.875927124811
5.46
2.3316e-05
6.384e-08
d
yr
n .180643458581681 2.1135e-09 deg/d
Q 3.552493604223379 2.7709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      7587 days (20.77 yr)  
   first obs. used      1999-10-04  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:11:34  

Additional Information
 Earth MOID = 1.6303 au 
 Jupiter MOID = 1.53463 au 
 T_jup = 3.205 
[ 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 15.7   n/a MPO436569  

118440 (1999 UM37)          Discovered 1999-Oct-16 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 UM37 = 2003 HL43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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