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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1447013887313472 5.8182e-08  
a 2.563738239262332 1.3454e-08 au
q 2.192761755697414 1.5402e-07 au
i 14.72858361248457 5.3593e-06 deg
node 206.4631549798521 1.8644e-05 deg
peri 166.0388326777 2.5083e-05 deg
M 162.9686439629158 1.8561e-05 deg
tp 2458521.748973096977
(2019-Feb-07.24897310)		 7.4585e-05 TDB
period 1499.370453991697
4.11		 1.1803e-05
3.231e-08		 d
yr
n .2401007696540842 1.89e-09 deg/d
Q 2.934714722827251 1.5401e-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 = 1.1955 au 
 Jupiter MOID = 2.5371 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 = 2.5371 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2127-Nov-10 02:22 00:03 Hygie 0.0381369529380375 0.0381126600161103 0.0381612460303612 4.9335662717404 4.93356606639004 2498243.598497844 3.1331382168149 1216.74290334151 49.3530758493899 6.02313941010484 12976.3382210843 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 18:26:56 2020-Feb-23 18:26
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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