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308028 (2004 RF328)
Classification: Main-belt Asteroid          SPK-ID: 2308028
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995197469940704 7.9048e-08  
a 2.346732157260544 1.7837e-08 au
q 1.878512750981071 1.7826e-07 au
i 1.852752073512127 6.1682e-06 deg
node 300.513530208589 0.00020639 deg
peri 67.68028283665399 0.00020714 deg
M 126.553991143851 2.2194e-05 deg
tp 2458538.898662039864
(2019-Feb-24.39866204)
7.7812e-05 TDB
period 1313.087640805892
3.60
1.497e-05
4.099e-08
d
yr
n .2741629643083491 3.1257e-09 deg/d
Q 2.814951563540017 2.1395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      7624 days (20.87 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55596  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:14:28  

Additional Information
 Earth MOID = .878455 au 
 Jupiter MOID = 2.65418 au 
 T_jup = 3.533 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457154.5 (2015-May-12.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2001317330197301 7.9224e-08  
q 1.876921204480094 1.7875e-07 au
tp 2457223.623581749817
(2015-Jul-20.12358175)
6.9632e-05 TDB
node 300.776728947713 0.00020631 deg
peri 66.97123084788572 0.00020705 deg
i 1.853992875858952 6.1638e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      7624 days (20.87 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55596  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:14:28  

Additional Information
 Jupiter MOID = 2.65418 au 
 T_jup = 3.533 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.276371812694733E-15 -1.412931126115069E-14 2.840578149216516E-12 1.703748931606064E-14 4.563651471646252E-13 -3.987198590225966E-15
q -1.412931126115069E-14 3.195288024635497E-14 -6.230953005305625E-12 -4.030235804212104E-14 -9.849959338810226E-13 8.986481833699717E-15
tp 2.840578149216516E-12 -6.230953005305625E-12 4.848684946333953E-9 1.730378923632733E-12 1.236168465087574E-9 -3.330064152778162E-12
node 1.703748931606064E-14 -4.030235804212104E-14 1.730378923632733E-12 4.256282854098467E-8 -4.254014841713232E-8 -2.990579361912499E-10
peri 4.563651471646252E-13 -9.849959338810226E-13 1.236168465087574E-9 -4.254014841713232E-8 4.286828266327807E-8 2.981806620692714E-10
i -3.987198590225966E-15 8.986481833699717E-15 -3.330064152778162E-12 -2.990579361912499E-10 2.981806620692714E-10 3.799237217362639E-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 17.2   n/a MPO455269  

308028 (2004 RF328)          Discovered 2004-Sep-15 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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