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277238 (2005 RD8)
Classification: Mars-crossing Asteroid          SPK-ID: 2277238
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .384636384457803 3.7877e-08  
a 2.690507876204969 1.0753e-08 au
q 1.655640654346248 1.0056e-07 au
i 9.182630238738218 4.7726e-06 deg
node 174.2492864164703 2.8756e-05 deg
peri 232.0424927237885 2.9983e-05 deg
M 98.95651976263461 7.0629e-06 deg
tp 2458557.410212113049
(2019-Mar-14.91021211)
2.9719e-05 TDB
period 1611.943548761838
4.41
9.6633e-06
2.646e-08
d
yr
n .223332883013504 1.3388e-09 deg/d
Q 3.72537509806369 1.4889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      6637 days (18.17 yr)  
   first obs. used      2002-02-16  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 16:25:50  

Additional Information
 Earth MOID = .682616 au 
 Jupiter MOID = 1.75934 au 
 T_jup = 3.244 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO455058  

277238 (2005 RD8)          Discovered 2005-Sep-08 by LINEAR at Socorro
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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