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441478 (2008 RP128)
Classification: Main-belt Asteroid          SPK-ID: 2441478
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09339844636010401 8.8755e-08  
a 2.397959353742466 3.4872e-08 au
q 2.173993675668241 2.0088e-07 au
i 5.648468784343259 9.1791e-06 deg
node 316.8039225904441 5.6154e-05 deg
peri 211.4158868382119 6.4298e-05 deg
M 227.9497622865026 3.4233e-05 deg
tp 2459498.005446413674
(2021-Oct-10.50544641)
0.00013413 TDB
period 1356.31683675959
3.71
2.9586e-05
8.1e-08
d
yr
n .2654247077401803 5.7898e-09 deg/d
Q 2.621925031816692 3.8129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      4005 days (10.97 yr)  
   first obs. used      2008-09-09  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:09  

Additional Information
 Earth MOID = 1.18325 au 
 Jupiter MOID = 2.36442 au 
 T_jup = 3.515 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457422.5 (2016-Feb-04.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09252094610892686 8.8862e-08  
q 2.17685884449707 2.0093e-07 au
tp 2456784.980415840104
(2014-May-07.48041584)
0.00011718 TDB
node 316.8817265061474 5.6171e-05 deg
peri 211.4885372288132 6.4437e-05 deg
i 5.646470705089082 9.178e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      4005 days (10.97 yr)  
   first obs. used      2008-09-09  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:09  

Additional Information
 Jupiter MOID = 2.36442 au 
 T_jup = 3.515 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.896434299782366E-15 -1.767446147422151E-14 -2.944431820615986E-12 5.604408847972817E-14 -6.501285240557777E-13 8.266096411677711E-15
q -1.767446147422151E-14 4.037305244796919E-14 7.314803920726633E-12 -1.245653855932851E-13 1.729482492775661E-12 -1.673178397136658E-14
tp -2.944431820615986E-12 7.314803920726633E-12 1.37300485840346E-8 -3.649765462005044E-11 3.70215182040988E-9 5.054912042112601E-12
node 5.604408847972817E-14 -1.245653855932851E-13 -3.649765462005044E-11 3.155134779414858E-9 -3.147221003052725E-9 1.50832127270113E-10
peri -6.501285240557777E-13 1.729482492775661E-12 3.70215182040988E-9 -3.147221003052725E-9 4.152098056397371E-9 -1.483705408314909E-10
i 8.266096411677711E-15 -1.673178397136658E-14 5.054912042112601E-12 1.50832127270113E-10 -1.483705408314909E-10 8.423477301239128E-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 17.1   n/a MPO450444  

441478 (2008 RP128)          Discovered 2008-Sep-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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