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JPL Small-Body Database Browser
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20501 (1999 RD10)
Classification: Main-belt Asteroid          SPK-ID: 2020501
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1991846042937217 3.9878e-08  
a 2.535900562956479 1.2794e-08 au
q 2.030788212795767 1.0065e-07 au
i 6.975365477545023 4.6347e-06 deg
node 185.2069675642175 4.1634e-05 deg
peri 194.8161572959921 4.4493e-05 deg
M 274.4129851087912 1.8709e-05 deg
tp 2458951.172844005094
(2020-Apr-11.67284401)
7.756e-05 TDB
period 1475.016087455587
4.04
1.1162e-05
3.056e-08
d
yr
n .2440651346528719 1.847e-09 deg/d
Q 3.041012913117191 1.5342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      11142 days (30.51 yr)  
   first obs. used      1989-03-03  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:29:59  

Additional Information
 Earth MOID = 1.03306 au 
 Jupiter MOID = 2.41632 au 
 T_jup = 3.410 
[ 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 14.3   n/a MPO347682  
diameter diameter 3.181 km 0.408 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.252   0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20501 (1999 RD10)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RD10 = 1989 EP12 = 1991 PU21 = 1998 HM82 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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