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52977 (1998 UE4)
Classification: Main-belt Asteroid          SPK-ID: 2052977
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2344278854322226 4.2738e-08  
a 2.340730720803858 9.1845e-09 au
q 1.791998167559567 1.0376e-07 au
i 9.870253119442028 4.2969e-06 deg
node 126.9501946879657 2.3043e-05 deg
peri 234.6355432075719 2.4603e-05 deg
M 43.38459208584553 1.0195e-05 deg
tp 2458842.862830877361
(2019-Dec-25.36283088)
3.6569e-05 TDB
period 1308.053807947751
3.58
7.6988e-06
2.108e-08
d
yr
n .2752180359956414 1.6198e-09 deg/d
Q 2.889463274048148 1.1338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1236  
   data-arc span      23717 days (64.93 yr)  
   first obs. used      1955-12-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50285  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:33:48  

Additional Information
 Earth MOID = .80808 au 
 Jupiter MOID = 2.59574 au 
 T_jup = 3.508 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456822.5 (2014-Jun-14.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2357440043447238 4.2777e-08  
q 1.788297141645077 1.0399e-07 au
tp 2456227.861364121876
(2012-Oct-27.36136412)
3.1386e-05 TDB
node 127.0385500441113 2.3061e-05 deg
peri 234.6343433026046 2.4591e-05 deg
i 9.868750802740209 4.2961e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1236  
   data-arc span      23717 days (64.93 yr)  
   first obs. used      1955-12-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50285  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:33:48  

Additional Information
 Jupiter MOID = 2.59574 au 
 T_jup = 3.508 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.829884350293011E-15 -4.440678695214877E-15 -2.32955466004862E-13 -7.556833295013686E-16 -4.005336748335741E-14 -1.733742810209552E-15
q -4.440678695214877E-15 1.081325120815881E-14 5.628721304958502E-13 1.029132915333451E-15 1.022510445959489E-13 4.43314152890646E-15
tp -2.32955466004862E-13 5.628721304958502E-13 9.850561309190891E-10 1.978670169317459E-12 2.799794419154972E-10 2.086808874634185E-12
node -7.556833295013686E-16 1.029132915333451E-15 1.978670169317459E-12 5.318085254961811E-10 -5.227359486372673E-10 -4.55928935923642E-12
peri -4.005336748335741E-14 1.022510445959489E-13 2.799794419154972E-10 -5.227359486372673E-10 6.046954028539921E-10 5.070515829397368E-12
i -1.733742810209552E-15 4.43314152890646E-15 2.086808874634185E-12 -4.55928935923642E-12 5.070515829397368E-12 1.84563256488141E-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 14.8   n/a MPO337681  
diameter diameter 6.568 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52977 (1998 UE4)          Discovered 1998-Oct-21 by Korlevic, K. at Visnjan
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 UE4 = 1987 SN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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