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(2015 HR1)
Classification: Amor [NEO]          SPK-ID: 3716457
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5662248698340511 9.2169e-05  
a 2.472819232275573 0.00054013 au
q 1.072647484357198 6.3774e-06 au
i 1.386952520285998 0.00016525 deg
node 209.3850432115625 7.1786e-05 deg
peri 34.96883107716209 0.00039491 deg
M 104.8342133862779 0.15414 deg
tp 2458586.893341558007
(2019-Apr-13.39334156)
0.47261 TDB
period 1420.322547663695
3.89
0.46535
0.001274
d
yr
n .2534635534668996 8.3045e-05 deg/d
Q 3.872990980193947 0.00084596 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      71 days  
   first obs. used      2015-04-18  
   last obs. used      2015-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .4079  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:17  

Additional Information
 Earth MOID = .0613359 au 
 Jupiter MOID = 1.16611 au 
 T_jup = 3.240 
[ 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 24.3   n/a MPO342322  
rotation period rot_per 0.0467 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Thirouin, A.; Moskovitz, N.; Binzel, R.P.; Christensen, E.; et al. (2016) Astron. J. 152, A163.]

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