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385202 (1999 RJ246)
Classification: Mars-crossing Asteroid          SPK-ID: 2385202
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4068974155199057 7.3481e-08  
a 2.739299578801098 3.1745e-08 au
q 1.624685659852165 2.1626e-07 au
i 6.709534249574786 2.0683e-05 deg
node 131.9495030287315 4.807e-05 deg
peri 254.2984236472906 9.5065e-05 deg
M 231.572376139492 5.5938e-05 deg
tp 2459791.263520095167
(2022-Jul-30.76352010)
0.00026641 TDB
period 1655.990049814029
4.53
2.8786e-05
7.881e-08
d
yr
n .2173926105657632 3.7789e-09 deg/d
Q 3.85391349775003 4.4662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      82  
   data-arc span      6606 days (18.09 yr)  
   first obs. used      1999-09-07  
   last obs. used      2017-10-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6129  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:30  

Additional Information
 Earth MOID = .643522 au 
 Jupiter MOID = 1.65569 au 
 T_jup = 3.216 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO423430  

385202 (1999 RJ246)          Discovered 1999-Sep-07 by LONEOS at Anderson Mesa
Reference: Last Updated: 2014-02-19

[ show close-approach data ]
Alternate Designations
 1999 RJ246 = 2005 BT17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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