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JPL Small-Body Database Browser
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66484 (1999 RR39)
Classification: Main-belt Asteroid          SPK-ID: 2066484
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516923070116442 3.1262e-08  
a 2.462423559153875 1.214e-08 au
q 2.088892848625999 7.7028e-08 au
i 7.376428079773556 4.6008e-06 deg
node 225.9663778274325 2.7878e-05 deg
peri 110.891890978142 3.3114e-05 deg
M 132.043181566498 2.0789e-05 deg
tp 2458482.826370306993
(2018-Dec-30.32637031)
7.9049e-05 TDB
period 1411.375464288013
3.86
1.0437e-05
2.857e-08
d
yr
n .2550703261527979 1.8863e-09 deg/d
Q 2.83595426968175 1.3982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      7901 days (21.63 yr)  
   first obs. used      1998-04-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57708  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:00:19  

Additional Information
 Earth MOID = 1.09379 au 
 Jupiter MOID = 2.5752 au 
 T_jup = 3.462 
[ 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 15.6   n/a MPO453061  
diameter diameter 2.370 km 0.371 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.096   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66484 (1999 RR39)          Discovered 1999-Sep-07 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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