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308378 (2005 RR31)
Classification: Main-belt Asteroid          SPK-ID: 2308378
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2871650418116451 7.5012e-08  
a 3.161391076750324 3.6339e-08 au
q 2.253550076012355 2.4996e-07 au
i 25.24403272891292 1.4183e-05 deg
node 326.4464726367266 1.8096e-05 deg
peri 79.96968191286375 4.3408e-05 deg
M 202.2569515682736 3.1784e-05 deg
tp 2459900.129090209030
(2022-Nov-16.62909021)
0.00019168 TDB
period 2053.126750719701
5.62
3.54e-05
9.692e-08
d
yr
n .1753423162373224 3.0233e-09 deg/d
Q 4.069232077488293 4.6775e-08 au
  Orbit Determination Parameters
   # obs. used (total)      189  
   data-arc span      6749 days (18.48 yr)  
   first obs. used      1999-09-03  
   last obs. used      2018-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53405  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-06 01:50:46  

Additional Information
 Earth MOID = 1.40695 au 
 Jupiter MOID = 2.08376 au 
 T_jup = 2.997 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456832.5 (2014-Jun-24.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2885897004512306 7.4276e-08  
q 2.248262844333239 2.4696e-07 au
tp 2457848.271704860043
(2017-Apr-04.77170486)
0.00016888 TDB
node 326.4762029807576 1.8098e-05 deg
peri 80.17651184621208 4.3223e-05 deg
i 25.24649969442106 1.4184e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      189  
   data-arc span      6749 days (18.48 yr)  
   first obs. used      1999-09-03  
   last obs. used      2018-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53405  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-06 01:50:46  

Additional Information
 Jupiter MOID = 2.08376 au 
 T_jup = 2.997 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.516889130721256E-15 -1.826330241117674E-14 -7.68298295350468E-12 7.968035221020888E-14 -1.658983386215474E-12 -7.473805936138299E-14
q -1.826330241117674E-14 6.09889246967326E-14 2.658751592884735E-11 -2.756294519395059E-13 5.68736643797326E-12 2.535810136810352E-13
tp -7.68298295350468E-12 2.658751592884735E-11 2.851960969381689E-8 -3.273054659186898E-10 6.640444352265074E-9 1.267195088899451E-10
node 7.968035221020888E-14 -2.756294519395059E-13 -3.273054659186898E-10 3.275217237898472E-10 -3.674950822423747E-10 9.30526039887015E-11
peri -1.658983386215474E-12 5.68736643797326E-12 6.640444352265074E-9 -3.674950822423747E-10 1.868189076644787E-9 -5.878042507050671E-11
i -7.473805936138299E-14 2.535810136810352E-13 1.267195088899451E-10 9.30526039887015E-11 -5.878042507050671E-11 2.011741459746765E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO437366  

308378 (2005 RR31)          Discovered 2005-Sep-13 by LONEOS at Anderson Mesa
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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