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344861 (2004 HP38)
Classification: Mars-crossing Asteroid          SPK-ID: 2344861
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 .3411980339402057 4.8155e-08  
a 2.407280407146861 7.3341e-09 au
q 1.585921065085574 1.1508e-07 au
i 6.586139726418393 5.1144e-06 deg
node 126.5976266435258 6.0021e-05 deg
peri 135.5836680256025 6.0991e-05 deg
M 93.043168812833 8.4351e-06 deg
tp 2458647.909634775272
(2019-Jun-13.40963478)
3.1572e-05 TDB
period 1364.232679308692
3.74
6.2344e-06
1.707e-08
d
yr
n .2638846037484057 1.2059e-09 deg/d
Q 3.228639749208147 9.8364e-09 au
  Orbit Determination Parameters
   # obs. used (total)      309  
   data-arc span      5699 days (15.60 yr)  
   first obs. used      2004-03-18  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55531  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:07:00  

Additional Information
 Earth MOID = .578743 au 
 Jupiter MOID = 1.89076 au 
 T_jup = 3.432 
[ 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 17.2   n/a MPO476593  

344861 (2004 HP38)          Discovered 2004-Apr-23 by CSS at Catalina
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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