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321821 (2010 RT46)
Classification: Inner Main-belt Asteroid          SPK-ID: 2321821
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0762091760001339 1.0978e-07  
a 1.896666619944586 1.327e-08 au
q 1.75212321969165 2.0702e-07 au
i 20.90614521820757 1.1763e-05 deg
node 330.0581790373953 1.3293e-05 deg
peri 338.097671952679 5.4714e-05 deg
M 274.7669630179803 5.5413e-05 deg
tp 2459226.386559587613
(2021-Jan-11.88655959)
0.00014676 TDB
period 954.0802995051713
2.61
1.0012e-05
2.741e-08
d
yr
n .377326730451003 3.9598e-09 deg/d
Q 2.041210020197522 1.4281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      5857 days (16.04 yr)  
   first obs. used      2004-01-17  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 19:52:17  

Additional Information
 Earth MOID = .74645 au 
 Jupiter MOID = 3.21601 au 
 T_jup = 3.868 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457657.5 (2016-Sep-26.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07629438561808205 1.0976e-07  
q 1.751956252365088 2.0697e-07 au
tp 2457317.787353205965
(2015-Oct-22.28735321)
0.00014895 TDB
node 330.0830403569267 1.329e-05 deg
peri 337.9649129843465 5.4794e-05 deg
i 20.9088102999331 1.1764e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      5857 days (16.04 yr)  
   first obs. used      2004-01-17  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 19:52:17  

Additional Information
 Jupiter MOID = 3.21601 au 
 T_jup = 3.868 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.204734686631662E-14 -2.267758983074565E-14 1.175682064453471E-11 3.493083985810851E-14 4.066215411137264E-12 -5.237437166610474E-14
q -2.267758983074565E-14 4.283557296302736E-14 -2.260285000461273E-11 -6.568635578633846E-14 -7.814166297783144E-12 1.02564989799799E-13
tp 1.175682064453471E-11 -2.260285000461273E-11 2.218709360102761E-8 2.169241411262843E-11 7.919122689195917E-9 -9.707522622286563E-11
node 3.493083985810851E-14 -6.568635578633846E-14 2.169241411262843E-11 1.766308278540259E-10 -1.561469167929589E-10 2.350876501682948E-11
peri 4.066215411137264E-12 -7.814166297783144E-12 7.919122689195917E-9 -1.561469167929589E-10 3.002421608462365E-9 -5.732966412263322E-11
i -5.237437166610474E-14 1.02564989799799E-13 -9.707522622286563E-11 2.350876501682948E-11 -5.732966412263322E-11 1.383950012357157E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO402270  

321821 (2010 RT46)          Discovered 2010-Sep-03 by Seki, T. at Geisei
Reference: 20120308/Numbers.arcLast Updated: 2012-03-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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