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192558 (1998 UM44)
Classification: Main-belt Asteroid          SPK-ID: 2192558
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09734423443277539 4.3196e-08  
a 3.005133299921677 2.0271e-08 au
q 2.712600899472361 1.2749e-07 au
i 9.636082977212373 4.5904e-06 deg
node 215.641369791118 2.5778e-05 deg
peri 153.401224600563 3.4408e-05 deg
M 112.0257806235982 2.3366e-05 deg
tp 2458608.380291880375
(2019-May-04.88029188)
0.00012232 TDB
period 1902.803923672568
5.21
1.9253e-05
5.271e-08
d
yr
n .189194480587979 1.9143e-09 deg/d
Q 3.297665700370992 2.2245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      9982 days (27.33 yr)  
   first obs. used      1993-11-20  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51775  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:19:56  

Additional Information
 Earth MOID = 1.71539 au 
 Jupiter MOID = 2.18241 au 
 T_jup = 3.223 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457620.5 (2016-Aug-20.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09546077465798904 4.304e-08  
q 2.721862170592046 1.2632e-07 au
tp 2456696.221580336473
(2014-Feb-07.72158034)
0.00012347 TDB
node 215.6791782696769 2.5818e-05 deg
peri 152.0175064462681 3.4753e-05 deg
i 9.621641238596963 4.586e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      9982 days (27.33 yr)  
   first obs. used      1993-11-20  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51775  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:19:56  

Additional Information
 Jupiter MOID = 2.18241 au 
 T_jup = 3.223 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.852474562129955E-15 -5.380347038235248E-15 4.715781278419457E-13 7.503927105293125E-15 4.90158100318659E-14 -1.121878528557833E-16
q -5.380347038235248E-15 1.595695845484678E-14 -1.335814471884747E-12 -2.706357276470605E-14 -1.021950208053443E-13 2.839603017409376E-18
tp 4.715781278419457E-13 -1.335814471884747E-12 1.524371389152826E-8 1.556857443159808E-11 2.884654273152873E-9 -3.368939498319185E-12
node 7.503927105293125E-15 -2.706357276470605E-14 1.556857443159808E-11 6.665672203446611E-10 -6.547938091207521E-10 2.130680509312661E-12
peri 4.90158100318659E-14 -1.021950208053443E-13 2.884654273152873E-9 -6.547938091207521E-10 1.207787025820907E-9 -2.732847362195336E-12
i -1.121878528557833E-16 2.839603017409376E-18 -3.368939498319185E-12 2.130680509312661E-12 -2.732847362195336E-12 2.103154715486507E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.30   n/a MPCxxxxx  

192558 (1998 UM44)          Discovered 1998-Oct-17 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

Alternate Designations
 1998 UM44 = 2003 RG7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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