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102121 (1999 RL174)
Classification: Main-belt Asteroid          SPK-ID: 2102121
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1747679128263042 3.6019e-08  
a 2.372176846907796 1.1154e-08 au
q 1.957596450518837 8.6205e-08 au
i 2.179701583247874 4.1871e-06 deg
node 108.6967125594768 0.00011702 deg
peri 168.5420490116032 0.0001178 deg
M 348.9962153054176 1.4725e-05 deg
tp 2459241.290460138656
(2021-Jan-26.79046014)		 5.4663e-05 TDB
period 1334.50136089504
3.65		 9.412e-06
2.577e-08		 d
yr
n .269763681438699 1.9026e-09 deg/d
Q 2.786757243296754 1.3103e-08 au
   Orbit Determination Parameters
   # obs. used (total)      512  
   data-arc span      8098 days (22.17 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59001  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:34  

Additional Information
 Earth MOID = .939358 au 
 Jupiter MOID = 2.33299 au 
 T_jup = 3.522 
[ 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 16.5   n/a MPO432548  

102121 (1999 RL174)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 RL174 = 1998 FR7 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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