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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457714.5 (2016-Nov-22.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0749173443801122 3.9334e-08  
q 2.523236493239278 1.1072e-07 au
tp 2458246.939829203501
(2018-May-08.43982920)
0.00016283 TDB
node 144.3362646902828 2.4901e-05 deg
peri 155.2143600172753 4.213e-05 deg
i 9.914563155083838 4.5796e-06 deg
  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
 Jupiter MOID = 2.28887 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.547202656270514E-15 -4.302422605186826E-15 4.837891983063114E-13 -1.315273358264408E-15 1.004708450327908E-13 1.055304142927384E-15
q -4.302422605186826E-15 1.225841361746502E-14 -4.16501105508769E-13 1.944262130895452E-15 -1.037140144680249E-13 -2.46269113669542E-15
tp 4.837891983063114E-13 -4.16501105508769E-13 2.651434215577689E-8 -3.404368499649274E-11 5.551339960000111E-9 -3.115668318089485E-12
node -1.315273358264408E-15 1.944262130895452E-15 -3.404368499649274E-11 6.200619823102933E-10 -6.176587540624195E-10 5.323928758074839E-12
peri 1.004708450327908E-13 -1.037140144680249E-13 5.551339960000111E-9 -6.176587540624195E-10 1.774905470847283E-9 -5.959973426757577E-12
i 1.055304142927384E-15 -2.46269113669542E-15 -3.115668318089485E-12 5.323928758074839E-12 -5.959973426757577E-12 2.097237080264234E-11

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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