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357005 (1999 HA2)
Classification: Apollo [NEO]          SPK-ID: 2357005
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .700802044097416 3.886e-08  
a 2.788904774365188 1.8402e-08 au
q .8344346076970214 1.1069e-07 au
i 15.17773976526105 1.1064e-05 deg
node 147.2028333835715 9.6523e-05 deg
peri 344.2989315898135 9.1028e-05 deg
M 246.9118294264292 1.0361e-05 deg
tp 2459734.896534720809
(2022-Jun-04.39653472)
5.411e-05 TDB
period 1701.174857845404
4.66
1.6837e-05
4.61e-08
d
yr
n .2116184578791344 2.0945e-09 deg/d
Q 4.743374941033354 3.1298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      5173 days (14.16 yr)  
   first obs. used      1999-04-20  
   last obs. used      2013-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56068  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 09:19:01  

Additional Information
 Earth MOID = .122425 au 
 Jupiter MOID = .465893 au 
 T_jup = 2.874 
[ 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 17.9   n/a MPO264883  

357005 (1999 HA2)          Discovered 1999-Apr-20 by LINEAR at Socorro
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

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