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306464 (1999 RO44)
Classification: Mars-crossing Asteroid          SPK-ID: 2306464
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4026000179561824 3.6864e-08  
a 2.623156524881523 8.1373e-09 au
q 1.567073660862345 9.7477e-08 au
i 27.10035252091387 5.1588e-06 deg
node 178.8201943433509 1.0823e-05 deg
peri 84.67937117979315 1.5677e-05 deg
M 33.88316154258282 5.9549e-06 deg
tp 2459054.445090048229
(2020-Jul-23.94509005)
2.5766e-05 TDB
period 1551.796384660204
4.25
7.2207e-06
1.977e-08
d
yr
n .2319891988141402 1.0795e-09 deg/d
Q 3.6792393889007 1.1413e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1055  
   data-arc span      9271 days (25.38 yr)  
   first obs. used      1995-08-20  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43087  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:59:10  

Additional Information
 Earth MOID = .786463 au 
 Jupiter MOID = 2.17107 au 
 T_jup = 3.141 
[ 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 15.21   n/a E2021B25  

306464 (1999 RO44)          Discovered 1999-Sep-11 by LINEAR at Socorro
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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