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52991 (1998 UM25)
Classification: Main-belt Asteroid          SPK-ID: 2052991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156671979656554 3.8599e-08  
a 2.284621166508657 7.5462e-09 au
q 2.020365437765574 8.9618e-08 au
i 6.236672829799264 4.4691e-06 deg
node 182.0511424439152 2.9089e-05 deg
peri 201.4139407408214 3.2786e-05 deg
M 214.386026109365 1.6652e-05 deg
tp 2459906.676293736395
(2022-Nov-23.17629374)
5.9531e-05 TDB
period 1261.303849059465
3.45
6.2492e-06
1.711e-08
d
yr
n .2854189339614293 1.4141e-09 deg/d
Q 2.548876895251741 8.419e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      8320 days (22.78 yr)  
   first obs. used      1998-08-31  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58562  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:09:52  

Additional Information
 Earth MOID = 1.02371 au 
 Jupiter MOID = 2.90139 au 
 T_jup = 3.586 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457242.5 (2015-Aug-08.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1155498382752 3.8732e-08  
q 2.021232092847475 8.9978e-08 au
tp 2457381.205573409396
(2015-Dec-24.70557341)
5.4443e-05 TDB
node 182.0871092242348 2.9067e-05 deg
peri 200.843426109585 3.2754e-05 deg
i 6.237626495624793 4.471e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      8320 days (22.78 yr)  
   first obs. used      1998-08-31  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58562  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:09:52  

Additional Information
 Jupiter MOID = 2.90139 au 
 T_jup = 3.586 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.500149809163994E-15 -3.475685451813916E-15 -4.855221535058882E-13 -7.215720871204343E-15 -1.343330763514381E-13 -2.543634590676509E-17
q -3.475685451813916E-15 8.096034842007216E-15 1.223095391987954E-12 1.667246594947603E-14 3.356575851490642E-13 1.768192531607664E-16
tp -4.855221535058882E-13 1.223095391987954E-12 2.963997896029555E-9 -2.693051183925933E-12 8.283577954354832E-10 -1.750867319197204E-12
node -7.215720871204343E-15 1.667246594947603E-14 -2.693051183925933E-12 8.448748662690406E-10 -8.402133384664048E-10 8.599297249090421E-12
peri -1.343330763514381E-13 3.356575851490642E-13 8.283577954354832E-10 -8.402133384664048E-10 1.072807194604422E-9 -9.035447171495967E-12
i -2.543634590676509E-17 1.768192531607664E-16 -1.750867319197204E-12 8.599297249090421E-12 -9.035447171495967E-12 1.999007659316405E-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 15.62   n/a MPO614063  

52991 (1998 UM25)          Discovered 1998-Oct-18 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 UM25 = 2000 GB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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