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66590 (1999 RD169)
Classification: Main-belt Asteroid          SPK-ID: 2066590
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2843152139158855 4.1095e-08  
a 2.622936194457933 9.9676e-09 au
q 1.877195529242907 1.1024e-07 au
i 2.38721737657151 4.1528e-06 deg
node 314.5492043334799 9.6205e-05 deg
peri 62.9032455765711 9.6401e-05 deg
M 348.2292564802023 7.0833e-06 deg
tp 2459251.231933195707
(2021-Feb-05.73193320)
3.0679e-05 TDB
period 1551.60087548729
4.25
8.8446e-06
2.422e-08
d
yr
n .2320184305689694 1.3226e-09 deg/d
Q 3.36867685967296 1.2802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      920  
   data-arc span      15442 days (42.28 yr)  
   first obs. used      1978-11-02  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48742  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:23:34  

Additional Information
 Earth MOID = .879048 au 
 Jupiter MOID = 2.11003 au 
 T_jup = 3.344 
[ 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 15.40   n/a E2021B10  

66590 (1999 RD169)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RD169 = 1978 VB12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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