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52849 (1998 RU72)
Classification: Main-belt Asteroid          SPK-ID: 2052849
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119528974564794 2.89e-08  
a 2.286765004511033 7.5867e-09 au
q 2.013430328451173 6.7934e-08 au
i 2.36293732958715 4.1955e-06 deg
node 27.55040027591782 7.8118e-05 deg
peri 76.44939591418554 8.074e-05 deg
M 13.13484631044951 1.8479e-05 deg
tp 2458954.415675324709
(2020-Apr-14.91567532)		 6.4856e-05 TDB
period 1263.079634963528
3.46		 6.2857e-06
1.721e-08		 d
yr
n .2850176584553951 1.4184e-09 deg/d
Q 2.560099680570893 8.4935e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      7885 days (21.59 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49517  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:15:58  

Additional Information
 Earth MOID = 1.03185 au 
 Jupiter MOID = 2.5498 au 
 T_jup = 3.591 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457004.5 (2014-Dec-13.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1186952711803852 2.8862e-08  
q 2.015425784059987 6.7795e-08 au
tp 2456427.823478588692
(2013-May-15.32347859)		 6.7935e-05 TDB
node 27.58178822166507 7.8036e-05 deg
peri 76.37184610229224 8.0711e-05 deg
i 2.364827746867045 4.1962e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      7885 days (21.59 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49517  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:15:58  

Additional Information
 Jupiter MOID = 2.5498 au 
 T_jup = 3.591 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.330235413850559E-16 -1.947699777886473E-15 1.979622378747007E-15 -1.695506846797349E-16 -2.68621090878671E-15 -7.916135501886598E-16
q -1.947699777886473E-15 4.59621495947889E-15 -1.290279067698757E-13 7.054169817862734E-17 -2.605931649205554E-14 1.943402347131685E-15
tp 1.979622378747007E-15 -1.290279067698757E-13 4.615150373499172E-9 -6.112293299632715E-12 1.405687584448864E-9 -6.019696762781652E-13
node -1.695506846797349E-16 7.054169817862734E-17 -6.112293299632715E-12 6.089693727863251E-9 -6.085946940871556E-9 -2.393508175404463E-11
peri -2.68621090878671E-15 -2.605931649205554E-14 1.405687584448864E-9 -6.085946940871556E-9 6.514185391684529E-9 2.373588503874443E-11
i -7.916135501886598E-16 1.943402347131685E-15 -6.019696762781652E-13 -2.393508175404463E-11 2.373588503874443E-11 1.760820724880673E-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 15.5   n/a MPO502509  
diameter diameter 1.831 km 0.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.303   0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52849 (1998 RU72)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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