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JPL Small-Body Database Browser
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59472 (1999 HX)
Classification: Main-belt Asteroid          SPK-ID: 2059472
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3758635030452468 4.5161e-08  
a 2.763633511098103 1.5088e-08 au
q 1.724884538483535 1.2069e-07 au
i 29.15844541006411 6.8225e-06 deg
node 227.095340518948 9.4795e-06 deg
peri 79.4283940607408 1.2563e-05 deg
M 172.0611819074003 8.3619e-06 deg
tp 2458198.453582730981
(2018-Mar-20.95358273)
3.5514e-05 TDB
period 1678.104886971187
4.59
1.3743e-05
3.763e-08
d
yr
n .2145277108689936 1.7568e-09 deg/d
Q 3.802382483712671 2.0759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      10813 days (29.60 yr)  
   first obs. used      1990-06-22  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:48:06  

Additional Information
 Earth MOID = .925864 au 
 Jupiter MOID = 2.14772 au 
 T_jup = 3.062 
[ 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 14.1   n/a MPO452976  
diameter diameter 6.451 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59472 (1999 HX)          Discovered 1999-Apr-19 by Broughton, J. at Reedy Creek
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 HX = 2000 RK61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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