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(2015 HD1)
Classification: Apollo [NEO]          SPK-ID: 3716436
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6454315636865992 0.00023147  
a 2.309052549239247 0.0013358 au
q .8187171517492319 6.0857e-05 au
i 5.338991331540459 0.00031111 deg
node 210.900984321896 0.00014833 deg
peri 57.74883745549569 0.0027901 deg
M 153.4298227372455 0.44428 deg
tp 2458454.294040376473
(2018-Dec-01.79404038)
1.1077 TDB
period 1281.590123461287
3.51
1.1121
0.003045
d
yr
n .2809010411438885 0.00024375 deg/d
Q 3.799387946729262 0.0021979 au
  Orbit Determination Parameters
   # obs. used (total)      53  
   data-arc span      4 days  
   first obs. used      2015-04-17  
   last obs. used      2015-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .29756  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 11:58:28  

Additional Information
 Earth MOID = .000686753 au 
 Jupiter MOID = 1.36536 au 
 T_jup = 3.267 
[ 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 27.4   n/a MPO337063  

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