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102048 (1999 RJ121)
Classification: Main-belt Asteroid          SPK-ID: 2102048
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1681386641056954 4.5713e-08  
a 2.414847682981363 1.0811e-08 au
q 2.008818419546142 1.0877e-07 au
i 3.745846044104404 4.9102e-06 deg
node 146.475096943645 4.8867e-05 deg
peri 184.5462660894029 4.9874e-05 deg
M 240.4722986690384 1.0533e-05 deg
tp 2459655.591902116323
(2022-Mar-17.09190212)
4.1663e-05 TDB
period 1370.670421480263
3.75
9.2046e-06
2.52e-08
d
yr
n .2626451949048524 1.7638e-09 deg/d
Q 2.820876946416583 1.2629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      487  
   data-arc span      7496 days (20.52 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:58  

Additional Information
 Earth MOID = .996135 au 
 Jupiter MOID = 2.52784 au 
 T_jup = 3.495 
[ 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 16.71   n/a E2021B55  

102048 (1999 RJ121)          Discovered 1999-Sep-13 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RJ121 = 2003 SN269 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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