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JPL Small-Body Database Browser
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442618 (2012 RF21)
Classification: Main-belt Asteroid          SPK-ID: 2442618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1998580045587503 5.1381e-08  
a 2.245385446898477 2.8909e-08 au
q 1.796627192016089 1.2069e-07 au
i 1.570502584706003 8.147e-06 deg
node 254.671096601895 0.0002551 deg
peri 60.33726662535924 0.00025889 deg
M 16.11636655733133 3.9966e-05 deg
tp 2458545.482681681764
(2019-Mar-02.98268168)
0.00013571 TDB
period 1228.951607926474
3.36
2.3733e-05
6.498e-08
d
yr
n .2929326083127091 5.6571e-09 deg/d
Q 2.694143701780864 3.4686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      4222 days (11.56 yr)  
   first obs. used      2008-04-14  
   last obs. used      2019-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62075  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:11:13  

Additional Information
 Earth MOID = .78265 au 
 Jupiter MOID = 2.58828 au 
 T_jup = 3.604 
[ 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 18.1   n/a MPO343099  

442618 (2012 RF21)          Discovered 2008-Apr-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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