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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1462692347807394 4.3271e-08  
a 3.097848634663622 2.4913e-08 au
q 2.644728685404815 1.3566e-07 au
i 2.103213862015687 5.1121e-06 deg
node 59.26425151184424 0.00014817 deg
peri 206.9451752835299 0.00014961 deg
M 48.02524816749091 1.8916e-05 deg
tp 2458934.821852512506
(2020-Mar-26.32185251)
0.00010449 TDB
period 1991.538549929681
5.45
2.4024e-05
6.577e-08
d
yr
n .1807647660210801 2.1806e-09 deg/d
Q 3.550968583922428 2.8557e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .65715  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:17  

Additional Information
 Earth MOID = 1.62731 au 
 Jupiter MOID = 1.53407 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 15.75   n/a E2021B55  

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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