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JPL Small-Body Database Browser
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66640 (1999 RG220)
Classification: Main-belt Asteroid          SPK-ID: 2066640
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2859899322880199 7.7267e-08  
a 2.524522155451171 6.1443e-09 au
q 1.802534235154085 1.9505e-07 au
i 3.797298503952942 2.9173e-06 deg
node 269.5529478546866 0.00010025 deg
peri 100.960633791168 0.00010063 deg
M 50.14044669044524 8.5431e-06 deg
tp 2458796.442338906748
(2019-Nov-08.94233891)
3.4652e-05 TDB
period 1465.099791533557
4.01
5.3487e-06
1.464e-08
d
yr
n .2457170508659883 8.9705e-10 deg/d
Q 3.246510075748258 7.9015e-09 au
  Orbit Determination Parameters
   # obs. used (total)      924  
   data-arc span      11766 days (32.21 yr)  
   first obs. used      1987-09-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51819  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:05:11  

Additional Information
 Earth MOID = .807156 au 
 Jupiter MOID = 2.24693 au 
 T_jup = 3.393 
[ 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 MPO439519  

66640 (1999 RG220)          Discovered 1999-Sep-04 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RG220 = 1987 SJ31 = 1991 RY19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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