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187166 (2005 RD46)
Classification: Main-belt Asteroid          SPK-ID: 2187166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .074105849081498 3.9311e-08  
a 2.726798449820726 1.8568e-08 au
q 2.524726735422648 1.1038e-07 au
i 9.910911372086812 4.5775e-06 deg
node 144.2602861978176 2.4923e-05 deg
peri 156.2444556624543 4.2451e-05 deg
M 207.7777524632187 3.6719e-05 deg
tp 2459895.930307455100
(2022-Nov-12.43030745)
0.00017042 TDB
period 1644.667022954992
4.50
1.6799e-05
4.599e-08
d
yr
n .2188892918599315 2.2358e-09 deg/d
Q 2.928870164218803 1.9944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      368  
   data-arc span      8475 days (23.20 yr)  
   first obs. used      1998-01-24  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:14:44  

Additional Information
 Earth MOID = 1.51094 au 
 Jupiter MOID = 2.28887 au 
 T_jup = 3.331 
[ 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 16.15   n/a MPCxxxxx  

187166 (2005 RD46)          Discovered 2005-Sep-14 by Becker, A. C. at Apache Point
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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