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215131 (1999 RH237)
Classification: Main-belt Asteroid          SPK-ID: 2215131
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2493404128119714 6.2411e-08  
a 2.345747485853938 8.8071e-09 au
q 1.760857839378473 1.4724e-07 au
i 5.669785971322804 4.1101e-06 deg
node 82.26429127612163 6.8785e-05 deg
peri 274.6143113146081 6.9238e-05 deg
M 275.6157503410446 7.5884e-06 deg
tp 2459308.094955195409
(2021-Apr-03.59495520)
2.7967e-05 TDB
period 1312.261284752629
3.59
7.3904e-06
2.023e-08
d
yr
n .2743356099756176 1.545e-09 deg/d
Q 2.930637132329402 1.1003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      383  
   data-arc span      9629 days (26.36 yr)  
   first obs. used      1992-11-21  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50957  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:22:48  

Additional Information
 Earth MOID = .768046 au 
 Jupiter MOID = 2.5356 au 
 T_jup = 3.512 
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Orbital Elements at Epoch 2457135.5 (2015-Apr-23.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2478538134691659 6.2158e-08  
q 1.765794778261253 1.4629e-07 au
tp 2456682.444348778982
(2014-Jan-24.94434878)
2.9375e-05 TDB
node 82.37978222280493 6.8735e-05 deg
peri 274.451266760546 6.921e-05 deg
i 5.669491016795815 4.1051e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      383  
   data-arc span      9629 days (26.36 yr)  
   first obs. used      1992-11-21  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50957  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:22:48  

Additional Information
 Jupiter MOID = 2.5356 au 
 T_jup = 3.512 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.863653494998868E-15 -9.083338668746597E-15 6.111710690687447E-13 -2.75152277703317E-14 1.309103856095066E-13 -2.031725930945689E-14
q -9.083338668746597E-15 2.139942006039848E-14 -1.493548441576542E-12 7.164072945032512E-14 -3.264897826461077E-13 4.758718700879475E-14
tp 6.111710690687447E-13 -1.493548441576542E-12 8.629028942045023E-10 -1.646236166753441E-11 2.95784804114462E-10 -4.395490414963964E-12
node -2.75152277703317E-14 7.164072945032512E-14 -1.646236166753441E-11 4.724458213741017E-9 -4.704878936325923E-9 -1.222860336654611E-10
peri 1.309103856095066E-13 -3.264897826461077E-13 2.95784804114462E-10 -4.704878936325923E-9 4.789966542804206E-9 1.20772439736792E-10
i -2.031725930945689E-14 4.758718700879475E-14 -4.395490414963964E-12 -1.222860336654611E-10 1.20772439736792E-10 1.685204728165543E-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 16.8   n/a MPO433407  

215131 (1999 RH237)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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