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392539 (2011 RO1)
Classification: Main-belt Asteroid          SPK-ID: 2392539
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03072562961901905 5.9598e-08  
a 3.044998378630003 4.9555e-08 au
q 2.951438886257704 2.0191e-07 au
i 15.55770665624381 8.0334e-06 deg
node 342.2549327558022 2.1875e-05 deg
peri 315.922122938753 0.00014961 deg
M 279.1696303762656 0.00015172 deg
tp 2459436.263739770168
(2021-Aug-09.76373977)
0.00082343 TDB
period 1940.792143442048
5.31
4.7377e-05
1.297e-07
d
yr
n .1854912702611884 4.5281e-09 deg/d
Q 3.138557871002301 5.1078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      4957 days (13.57 yr)  
   first obs. used      2006-09-28  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51902  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:23:36  

Additional Information
 Earth MOID = 1.95303 au 
 Jupiter MOID = 1.99849 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457363.5 (2015-Dec-07.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0294323314273852 5.9532e-08  
q 2.956332944485872 2.0185e-07 au
tp 2457492.425843160410
(2016-Apr-13.92584316)
0.00083541 TDB
node 342.2769873198822 2.1875e-05 deg
peri 315.5640132264146 0.00015608 deg
i 15.55603243987058 8.0324e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      4957 days (13.57 yr)  
   first obs. used      2006-09-28  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51902  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:23:36  

Additional Information
 Jupiter MOID = 1.99849 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.544033142996038E-15 -1.170563405105743E-14 6.751160443669628E-12 3.001624962313676E-15 1.185898616343972E-12 3.633188732546525E-15
q -1.170563405105743E-14 4.074480680749714E-14 -1.500843955159148E-12 -2.795478074278196E-15 -1.02260800166128E-13 -4.304929598874829E-15
tp 6.751160443669628E-12 -1.500843955159148E-12 6.979103490298507E-7 2.176642258287756E-11 1.291324979836197E-7 2.799985198702982E-11
node 3.001624962313676E-15 -2.795478074278196E-15 2.176642258287756E-11 4.785261178279802E-10 -4.562413306642882E-10 3.736840072864627E-11
peri 1.185898616343972E-12 -1.02260800166128E-13 1.291324979836197E-7 -4.562413306642882E-10 2.435947832257654E-8 -3.083596025421474E-11
i 3.633188732546525E-15 -4.304929598874829E-15 2.799985198702982E-11 3.736840072864627E-11 -3.083596025421474E-11 6.452006664994701E-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 MPO472030  

392539 (2011 RO1)          Discovered 2008-Dec-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2011 RO1 = 2009 DX12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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