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442253 (2011 PR1)
Classification: Mars-crossing Asteroid          SPK-ID: 2442253
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .392942061374816 5.412e-07  
a 2.5683423757364 1.5687e-07 au
q 1.559132628298247 1.4842e-06 au
i 7.288454931406561 1.7962e-05 deg
node 270.8727906687245 7.3541e-05 deg
peri 41.63668907413412 9.922e-05 deg
M 50.97989779666985 8.455e-05 deg
tp 2458787.600685727953
(2019-Oct-31.10068573)
0.00033445 TDB
period 1503.411274844562
4.12
0.00013774
3.771e-07
d
yr
n .2394554344666734 2.1938e-08 deg/d
Q 3.577552123174553 2.1851e-07 au
  Orbit Determination Parameters
   # obs. used (total)      64  
   data-arc span      5721 days (15.66 yr)  
   first obs. used      2003-10-03  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .53152  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:54  

Additional Information
 Earth MOID = .554222 au 
 Jupiter MOID = 1.7663 au 
 T_jup = 3.308 
[ 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 18.9   n/a MPO477087  

442253 (2011 PR1)          Discovered 2003-Oct-03 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 PR1 = 2007 RQ184 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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