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52856 (1998 RD77)
Classification: Main-belt Asteroid          SPK-ID: 2052856
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384540458128857 2.4616e-08  
a 2.23785941399017 5.5716e-09 au
q 1.928018724162777 5.4497e-08 au
i 5.318727135321794 2.948e-06 deg
node 134.4223976077558 3.8065e-05 deg
peri 345.5855732931401 4.0665e-05 deg
M 190.1364472761534 1.4702e-05 deg
tp 2459973.459500719583
(2023-Jan-28.95950072)
5.0853e-05 TDB
period 1222.778029355857
3.35
4.5666e-06
1.25e-08
d
yr
n .2944115705036368 1.0995e-09 deg/d
Q 2.547700103817563 6.3431e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1955  
   data-arc span      8365 days (22.90 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50485  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:07:39  

Additional Information
 Earth MOID = .944877 au 
 Jupiter MOID = 2.51793 au 
 T_jup = 3.619 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457260.5 (2015-Aug-26.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389217545342232 2.4713e-08  
q 1.925984458562991 5.4772e-08 au
tp 2457529.639107778671
(2016-May-21.13910778)
4.7306e-05 TDB
node 134.4573440711999 3.8071e-05 deg
peri 345.6359429402398 4.0635e-05 deg
i 5.318715412578346 2.9482e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1955  
   data-arc span      8365 days (22.90 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50485  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:07:39  

Additional Information
 Jupiter MOID = 2.51793 au 
 T_jup = 3.619 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.107568376777366E-16 -1.348502689613152E-15 1.932928164271106E-13 -5.473151431552124E-17 6.276154789835468E-14 -4.342625643407943E-16
q -1.348502689613152E-15 2.999933146095085E-15 -3.75227975570341E-13 5.799378180190157E-16 -1.255875591946055E-13 1.047533974343027E-15
tp 1.932928164271106E-13 -3.75227975570341E-13 2.237813027626419E-9 1.021105087519895E-11 6.84806598526679E-10 7.829659491748989E-13
node -5.473151431552124E-17 5.799378180190157E-16 1.021105087519895E-11 1.449417455081996E-9 -1.439578458256047E-9 2.223530343091736E-11
peri 6.276154789835468E-14 -1.255875591946055E-13 6.84806598526679E-10 -1.439578458256047E-9 1.651227093769868E-9 -2.191653337341494E-11
i -4.342625643407943E-16 1.047533974343027E-15 7.829659491748989E-13 2.223530343091736E-11 -2.191653337341494E-11 8.691647369601228E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.84   n/a MPO636798  
diameter diameter 2.709 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.348   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52856 (1998 RD77)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RD77 = 2000 CE95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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