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JPL Small-Body Database Browser
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66638 (1999 RD218)
Classification: Main-belt Asteroid          SPK-ID: 2066638
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 .1238620826200801 3.87e-08  
a 2.664755015600119 1.7127e-08 au
q 2.334692909695584 1.0163e-07 au
i 12.40075854996688 5.7641e-06 deg
node 159.8107441297091 1.9994e-05 deg
peri 94.35541711689255 3.0732e-05 deg
M 334.801799020157 2.5353e-05 deg
tp 2459111.711934205861
(2020-Sep-19.21193421)
0.00011228 TDB
period 1588.855345115167
4.35
1.5318e-05
4.194e-08
d
yr
n .2265782099715979 2.1845e-09 deg/d
Q 2.994817121504654 1.9249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      8011 days (21.93 yr)  
   first obs. used      1998-02-23  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58239  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:00:30  

Additional Information
 Earth MOID = 1.36058 au 
 Jupiter MOID = 2.15093 au 
 T_jup = 3.340 
[ 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 14.8   n/a MPO436247  

66638 (1999 RD218)          Discovered 1999-Sep-04 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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