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(1998 UM1)
Classification: Amor [NEO]          SPK-ID: 3092197
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .401019378227009 4.5332e-08  
a 1.69915556871752 8.2132e-09 au
q 1.01776125903946 8.1497e-08 au
i 4.865972537466194 9.2838e-06 deg
node 3.274669785788107 4.0447e-05 deg
peri 1.279617957666707 3.9978e-05 deg
M 274.1586321769695 8.8486e-06 deg
tp 2459193.404460573547
(2020-Dec-09.90446057)
2.0214e-05 TDB
period 808.9992921553315
2.21
5.8657e-06
1.606e-08
d
yr
n .4449942088835331 3.2264e-09 deg/d
Q 2.38054987839558 1.1507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      7336 days (20.08 yr)  
   first obs. used      1998-10-19  
   last obs. used      2018-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55402  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Nov-20 06:28:43  

Additional Information
 Earth MOID = .015876 au 
 Jupiter MOID = 3.07965 au 
 T_jup = 4.106 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.4   n/a E2018W41  

[ show close-approach data ]
Alternate Designations
 1998 UM1 = 2018 RP4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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