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(2014 HQ124)
Classification: Aten [NEO, PHA]          SPK-ID: 3669253
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2590984852002399 1.2615e-07  
a .8507491536474223 1.8266e-08 au
q .6303213366519891 1.0478e-07 au
i 26.37111782101828 6.9049e-06 deg
node 257.5564480538242 6.4858e-07 deg
peri 144.5127943248847 2.1137e-05 deg
M 349.0760424252754 8.6574e-05 deg
tp 2459209.197175213803
(2020-Dec-25.69717521)
6.918e-05 TDB
period 286.6161879110185
0.78
9.2309e-06
2.527e-08
d
yr
n 1.256035127059062 4.0452e-08 deg/d
Q 1.071176970642856 2.2999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      302  
   # delay obs. used      5  
   # Doppler obs. used      3  
   data-arc span      2448 days (6.70 yr)  
   first obs. used      2014-04-23  
   last obs. used      2021-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .2503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 09:51:43  

Additional Information
 Earth MOID = .00990633 au 
 Jupiter MOID = 4.27461 au 
 T_jup = 6.816 
[ 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 18.93   n/a E2021A14  
diameter diameter 0.325 km 0.07 personal communication from Amy Mainzer, 2014-May-30 preliminary NEOWISE thermal model fit
rotation period rot_per 16. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Thirouin, A.; Moskovitz, N.; Binzel, R.P.; Christensen, E.; et al. (2016) Astron. J. 152, A163.]
geometric albedo albedo 0.291   0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

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