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312917 (2011 WH1)
Classification: Main-belt Asteroid          SPK-ID: 2312917
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09495215323796986 6.3016e-08  
a 3.05457920118983 5.5833e-08 au
q 2.764540328800938 2.1797e-07 au
i 8.332283389246721 5.7231e-06 deg
node 250.4160426385793 4.2718e-05 deg
peri 81.45884618578002 5.4365e-05 deg
M 304.7325399266087 3.7241e-05 deg
tp 2459299.859136690212
(2021-Mar-26.35913669)
0.00020708 TDB
period 1949.959145315637
5.34
5.3463e-05
1.464e-07
d
yr
n .1846192525955344 5.0618e-09 deg/d
Q 3.344618073578722 6.1134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      4969 days (13.60 yr)  
   first obs. used      2005-09-30  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55763  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:11:30  

Additional Information
 Earth MOID = 1.76985 au 
 Jupiter MOID = 1.97515 au 
 T_jup = 3.213 
[ 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 16.1   n/a MPO471275  

312917 (2011 WH1)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 WH1 = 2010 RG20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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