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JPL Small-Body Database Browser
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66651 (1999 RQ252)
Classification: Main-belt Asteroid          SPK-ID: 2066651
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1024614073357227 4.7595e-08  
a 2.774839108063526 1.4771e-08 au
q 2.490525187921135 1.3306e-07 au
i 7.333392981354198 4.7973e-06 deg
node 275.5995665993718 3.4312e-05 deg
peri 215.9933135749295 4.1718e-05 deg
M 50.15421785446455 2.2013e-05 deg
tp 2458765.287662289978
(2019-Oct-08.78766229)
0.00010301 TDB
period 1688.321445293362
4.62
1.3481e-05
3.691e-08
d
yr
n .2132295369484254 1.7025e-09 deg/d
Q 3.059153028205917 1.6284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1286  
   data-arc span      7453 days (20.41 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51519  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:00:48  

Additional Information
 Earth MOID = 1.50977 au 
 Jupiter MOID = 2.02956 au 
 T_jup = 3.316 
[ 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 14.2   n/a MPO337769  
diameter diameter 8.133 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66651 (1999 RQ252)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RQ252 = 1999 VX195 = 2000 SM172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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