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101830 (1999 JR31)
Classification: Main-belt Asteroid          SPK-ID: 2101830
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1040299661544568 4.0208e-08  
a 2.716099051696117 1.3503e-08 au
q 2.433543359276017 1.1119e-07 au
i 12.32874226660491 5.111e-06 deg
node 49.86760042465626 1.9236e-05 deg
peri 95.54680506760859 3.1746e-05 deg
M 4.795135879331704 2.4771e-05 deg
tp 2459178.722137562367
(2020-Nov-25.22213756)
0.00011248 TDB
period 1634.996520399035
4.48
1.2193e-05
3.338e-08
d
yr
n .2201839548332121 1.642e-09 deg/d
Q 2.998654744116216 1.4908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      8001 days (21.91 yr)  
   first obs. used      1999-04-14  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:51  

Additional Information
 Earth MOID = 1.48199 au 
 Jupiter MOID = 2.09115 au 
 T_jup = 3.320 
[ show covariance matrix ]

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 MPO309890  

101830 (1999 JR31)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 JR31 = 2001 TC68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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