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146485 (2001 RJ144)
Classification: Main-belt Asteroid          SPK-ID: 2146485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1478520163793665 3.851e-08  
a 2.581443552755865 1.1271e-08 au
q 2.199771918311395 1.0093e-07 au
i 4.993718298785245 3.9525e-06 deg
node 299.7236851611081 5.7147e-05 deg
peri 152.5801061141462 5.9972e-05 deg
M 97.63766568702081 1.8851e-05 deg
tp 2458589.627321415099
(2019-Apr-16.12732142)
7.809e-05 TDB
period 1514.929338486091
4.15
9.9218e-06
2.716e-08
d
yr
n .2376348459656591 1.5564e-09 deg/d
Q 2.963115187200335 1.2938e-08 au
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53236  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 23:55:19  

Additional Information
 Earth MOID = 1.21787 au 
 Jupiter MOID = 2.21337 au 
 T_jup = 3.404 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457219.5 (2015-Jul-16.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1476390601299849 3.8366e-08  
q 2.201514598499525 1.0046e-07 au
tp 2457076.422848533601
(2015-Feb-22.92284853)
7.4524e-05 TDB
node 299.7877488314115 5.7093e-05 deg
peri 153.0994109032492 5.993e-05 deg
i 4.995608817590409 3.9535e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53236  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 23:55:19  

Additional Information
 Jupiter MOID = 2.21337 au 
 T_jup = 3.404 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.471922970535887E-15 -3.837055225189515E-15 -8.939815777022245E-13 -1.41092508899086E-14 -2.456366600916514E-13 -3.273701953844413E-16
q -3.837055225189515E-15 1.009214367615256E-14 2.525172830306861E-12 3.844227397748311E-14 6.875962450539944E-13 9.537823000119178E-16
tp -8.939815777022245E-13 2.525172830306861E-12 5.553824846650044E-9 4.399587518566992E-11 1.388394256742089E-9 -1.734657184457268E-12
node -1.41092508899086E-14 3.844227397748311E-14 4.399587518566992E-11 3.259574317453367E-9 -3.235572079929214E-9 -4.136883448928368E-12
peri -2.456366600916514E-13 6.875962450539944E-13 1.388394256742089E-9 -3.235572079929214E-9 3.591616419644913E-9 3.688946671788736E-12
i -3.273701953844413E-16 9.537823000119178E-16 -1.734657184457268E-12 -4.136883448928368E-12 3.688946671788736E-12 1.562992971268692E-11

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 16.2   n/a MPO459679  

146485 (2001 RJ144)          Discovered 2001-Sep-08 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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