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74635 (1999 RR51)
Classification: Main-belt Asteroid          SPK-ID: 2074635
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1960916097032014 4.541e-08  
a 2.337885559165906 8.9546e-09 au
q 1.879445816567194 1.0898e-07 au
i 9.052672165135514 4.5278e-06 deg
node 175.7210912594175 2.0595e-05 deg
peri 180.3692483570324 2.2449e-05 deg
M 271.2997132946874 8.0015e-06 deg
tp 2459322.203526968894
(2021-Apr-17.70352697)
2.9387e-05 TDB
period 1305.669620816065
3.57
7.5015e-06
2.054e-08
d
yr
n .2757205913812975 1.5841e-09 deg/d
Q 2.796325301764617 1.0711e-08 au
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      10659 days (29.18 yr)  
   first obs. used      1991-04-09  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54374  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:01  

Additional Information
 Earth MOID = .875071 au 
 Jupiter MOID = 2.65168 au 
 T_jup = 3.524 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO263908  
diameter diameter 1.467 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.393   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74635 (1999 RR51)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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