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101964 (1999 RU41)
Classification: Main-belt Asteroid          SPK-ID: 2101964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .2578768247912854 4.1451e-08  
a 2.585725558003735 9.9032e-09 au
q 1.918926861324057 1.0367e-07 au
i 4.684755138992953 4.2552e-06 deg
node 174.7454557895715 7.2803e-05 deg
peri 179.8973077462993 7.4014e-05 deg
M 359.6375851747756 1.4247e-05 deg
tp 2459002.028887476519
(2020-Jun-01.52888748)
6.0107e-05 TDB
period 1518.700266210345
4.16
8.7249e-06
2.389e-08
d
yr
n .2370447994312387 1.3618e-09 deg/d
Q 3.252524254683413 1.2457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      458  
   data-arc span      9682 days (26.51 yr)  
   first obs. used      1994-05-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54842  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:46  

Additional Information
 Earth MOID = .914198 au 
 Jupiter MOID = 2.19485 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457572.5 (2016-Jul-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2596756674630094 4.1851e-08  
q 1.91374541460952 1.0507e-07 au
tp 2457484.510787399977
(2016-Apr-06.01078740)
5.4602e-05 TDB
node 174.8340102754102 7.2746e-05 deg
peri 180.032350580805 7.3938e-05 deg
i 4.687774578366186 4.2616e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      458  
   data-arc span      9682 days (26.51 yr)  
   first obs. used      1994-05-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54842  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:46  

Additional Information
 Jupiter MOID = 2.19485 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.75152620899859E-15 -4.389522645379295E-15 1.379104067483598E-12 1.942051951147328E-14 3.830688311250444E-13 2.951285220704911E-15
q -4.389522645379295E-15 1.103926888229847E-14 -3.367835472942892E-12 -4.594057867702369E-14 -9.416667558304737E-13 -7.13758565084362E-15
tp 1.379104067483598E-12 -3.367835472942892E-12 2.981417929167431E-9 2.99744364560202E-11 7.722900678067911E-10 4.754546657310105E-12
node 1.942051951147328E-14 -4.594057867702369E-14 2.99744364560202E-11 5.29198196764352E-9 -5.265693398371781E-9 1.357588003922561E-10
peri 3.830688311250444E-13 -9.416667558304737E-13 7.722900678067911E-10 -5.265693398371781E-9 5.466766458724967E-9 -1.340153198253491E-10
i 2.951285220704911E-15 -7.13758565084362E-15 4.754546657310105E-12 1.357588003922561E-10 -1.340153198253491E-10 1.816115944431075E-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 16.1   n/a MPO439697  
diameter diameter 3.762 km 0.977 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101964 (1999 RU41)          Discovered 1999-Sep-13 by Korlevic, K. at Visnjan
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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