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JPL Small-Body Database Browser
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442617 (2012 RR20)
Classification: Main-belt Asteroid          SPK-ID: 2442617
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1047035628196308 6.6576e-08  
a 2.283069168893412 1.9175e-08 au
q 2.044023692746619 1.4736e-07 au
i 4.927008875583977 6.3014e-06 deg
node 282.5476588866185 0.00010029 deg
peri 27.51567214514802 0.00011185 deg
M 2.012081489976224 4.5244e-05 deg
tp 2458593.457609616348
(2019-Apr-19.95760962)
0.00015835 TDB
period 1260.018816705377
3.45
1.5874e-05
4.346e-08
d
yr
n .2857100189513889 3.5994e-09 deg/d
Q 2.522114645040206 2.1182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      134  
   data-arc span      7263 days (19.89 yr)  
   first obs. used      2000-01-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48501  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:11:13  

Additional Information
 Earth MOID = 1.02994 au 
 Jupiter MOID = 2.67708 au 
 T_jup = 3.592 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457461.5 (2016-Mar-14.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1052539762535282 6.6562e-08  
q 2.042977651382059 1.4753e-07 au
tp 2457334.519616787021
(2015-Nov-08.01961679)
0.00015828 TDB
node 282.5948963132021 0.00010038 deg
peri 27.83394033640998 0.00011182 deg
i 4.924558533950449 6.2993e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      134  
   data-arc span      7263 days (19.89 yr)  
   first obs. used      2000-01-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48501  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:11:13  

Additional Information
 Jupiter MOID = 2.67708 au 
 T_jup = 3.592 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.430558197875069E-15 -9.760391902172106E-15 1.876095249393371E-12 2.367826322467016E-14 4.260361666224025E-13 -7.432596421476995E-15
q -9.760391902172106E-15 2.17659969827436E-14 -4.568841512399085E-12 -5.258812071490493E-14 -1.072005938899774E-12 1.751815449214292E-14
tp 1.876095249393371E-12 -4.568841512399085E-12 2.505352400957121E-8 -7.822991910011292E-11 7.86661012849505E-9 -3.158599279841151E-11
node 2.367826322467016E-14 -5.258812071490493E-14 -7.822991910011292E-11 1.007534091378309E-8 -1.006320174656549E-8 5.690731616237879E-11
peri 4.260361666224025E-13 -1.072005938899774E-12 7.86661012849505E-9 -1.006320174656549E-8 1.250420994173006E-8 -6.643776525139203E-11
i -7.432596421476995E-15 1.751815449214292E-14 -3.158599279841151E-11 5.690731616237879E-11 -6.643776525139203E-11 3.968126211022057E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO450446  

442617 (2012 RR20)          Discovered 2009-Nov-17 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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