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109642 (2001 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2109642
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .201790173589016 6.2161e-08  
a 2.416266624509523 1.2083e-08 au
q 1.928687762912401 1.5474e-07 au
i .3218465101842946 5.1229e-06 deg
node 298.7105134413096 0.0010851 deg
peri 68.10950212079572 0.0010852 deg
M 337.5545604785457 1.6927e-05 deg
tp 2459086.034500357165
(2020-Aug-24.53450036)
6.4994e-05 TDB
period 1371.878688280829
3.76
1.0291e-05
2.818e-08
d
yr
n .2624138730889787 1.9684e-09 deg/d
Q 2.903845486106646 1.4522e-08 au
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      7457 days (20.42 yr)  
   first obs. used      1999-01-08  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:29:53  

Additional Information
 Earth MOID = .927361 au 
 Jupiter MOID = 2.5589 au 
 T_jup = 3.488 
[ 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 16.7   n/a MPO193875  

109642 (2001 RA1)          Discovered 2001-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 RA1 = 1999 AP26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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