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(2015 HU9)
Classification: Apollo [NEO]          SPK-ID: 3716636
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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.


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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 .4857038614751016 0.00055855  
a 1.089273635019549 0.0003761 au
q .5602092242875337 0.00041502 au
i 6.772846144981086 0.010514 deg
node 43.40292882555547 0.0040217 deg
peri 298.5035807691829 0.0092337 deg
M 100.6321886012505 0.76944 deg
tp 2458884.425096259970
(2020-Feb-04.92509626)
0.8274 TDB
period 415.2445249103087
1.14
0.21506
0.0005888
d
yr
n .8669590528081224 0.00044901 deg/d
Q 1.618338045751565 0.00055877 au
  Orbit Determination Parameters
   # obs. used (total)      69  
   data-arc span      21 days  
   first obs. used      2015-04-20  
   last obs. used      2015-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .48627  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:14  

Additional Information
 Earth MOID = .0147765 au 
 Jupiter MOID = 3.80091 au 
 T_jup = 5.571 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.4   n/a MPO337074  
rotation period rot_per 0.2130 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Thirouin, A.; Moskovitz, N.A.; Binzel, R.P.; Christensen, E.J.; et al. (2018) Astrophys. J. Supp. Series 2391, A4.]

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