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312436 (2008 HY20)
Classification: Main-belt Asteroid          SPK-ID: 2312436
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2888609769623433 8.7459e-08  
a 2.765896395333863 2.2784e-08 au
q 1.966936860401099 2.4452e-07 au
i 11.34284449397913 6.9634e-06 deg
node 54.20498191936944 4.2425e-05 deg
peri 133.6960842152832 4.3227e-05 deg
M 244.6085345380268 9.2113e-06 deg
tp 2459539.046834447917
(2021-Nov-20.54683445)
4.6694e-05 TDB
period 1680.166376473845
4.60
2.0761e-05
5.684e-08
d
yr
n .2142644948981361 2.6475e-09 deg/d
Q 3.564855930266626 2.9366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      6084 days (16.66 yr)  
   first obs. used      2003-01-29  
   last obs. used      2019-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62173  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:11:02  

Additional Information
 Earth MOID = .985192 au 
 Jupiter MOID = 1.465 au 
 T_jup = 3.250 
[ 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 16.5   n/a MPO455303  

312436 (2008 HY20)          Discovered 2008-Apr-26 by CSS at Catalina
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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