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74659 (1999 RU89)
Classification: Main-belt Asteroid          SPK-ID: 2074659
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .165744648293763 3.7497e-08  
a 2.347384526810161 9.6921e-09 au
q 1.958318104003789 8.8209e-08 au
i 6.81980792816263 4.8642e-06 deg
node 149.0681565423835 3.0136e-05 deg
peri 239.4499968483055 3.3402e-05 deg
M 250.0717583084282 1.2991e-05 deg
tp 2459401.626693702749
(2021-Jul-06.12669370)
4.783e-05 TDB
period 1313.635217946557
3.60
8.1358e-06
2.227e-08
d
yr
n .2740486819185187 1.6973e-09 deg/d
Q 2.736450949616532 1.1299e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1112  
   data-arc span      9594 days (26.27 yr)  
   first obs. used      1994-03-06  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53165  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:01  

Additional Information
 Earth MOID = .972598 au 
 Jupiter MOID = 2.72886 au 
 T_jup = 3.532 
[ show covariance matrix ]

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 15.4   n/a MPO436305  
diameter diameter 1.741 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.485   0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74659 (1999 RU89)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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