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78559 (2002 RG154)
Classification: Main-belt Asteroid          SPK-ID: 2078559
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1445259102183679 5.8166e-08  
a 2.564098404047494 1.3425e-08 au
q 2.193519748313066 1.5398e-07 au
i 14.72698095864474 5.3586e-06 deg
node 206.4700937831756 1.8646e-05 deg
peri 166.0487138752556 2.51e-05 deg
M 114.9456455860619 1.8385e-05 deg
tp 2458521.659933482670
(2019-Feb-07.15993348)
7.4698e-05 TDB
period 1499.68642193734
4.11
1.1778e-05
3.225e-08
d
yr
n .2400501829808802 1.8853e-09 deg/d
Q 2.934677059781922 1.5365e-08 au
  Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-12-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:26:40  

Additional Information
 Earth MOID = 1.19764 au 
 Jupiter MOID = 2.53593 au 
 T_jup = 3.373 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456665.5 (2014-Jan-08.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144489862138688 5.8299e-08  
q 2.193791120591476 1.5433e-07 au
tp 2457017.453060243043
(2014-Dec-25.95306024)
6.942e-05 TDB
node 206.5325499037072 1.8672e-05 deg
peri 165.102196379761 2.5071e-05 deg
i 14.71355073834239 5.3586e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-12-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:26:40  

Additional Information
 Jupiter MOID = 2.53593 au 
 T_jup = 3.373 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.398735921625225E-15 -8.976094600961244E-15 -1.363773774810128E-12 -2.09110218291619E-14 -1.965326571698476E-13 -8.113507172414527E-15
q -8.976094600961244E-15 2.381805986804728E-14 3.795443166972191E-12 5.739062892014344E-14 5.554971304272342E-13 2.174381092953581E-14
tp -1.363773774810128E-12 3.795443166972191E-12 4.819170103782354E-9 1.566219339360693E-11 1.167937855347055E-9 9.590990925693357E-12
node -2.09110218291619E-14 5.739062892014344E-14 1.566219339360693E-11 3.486480539638146E-10 -3.339524836771735E-10 -2.733009359576314E-11
peri -1.965326571698476E-13 5.554971304272342E-13 1.167937855347055E-9 -3.339524836771735E-10 6.285799210513912E-10 2.868302338935014E-11
i -8.113507172414527E-15 2.174381092953581E-14 9.590990925693357E-12 -2.733009359576314E-11 2.868302338935014E-11 2.871454253644144E-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 15.0   n/a MPO449494  
diameter diameter 2.451 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.294   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78559 (2002 RG154)          Discovered 2002-Sep-14 by Ametlla de Mar at Ametlla de Mar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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