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JPL Small-Body Database Browser
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59481 (1999 HX8)
Classification: Main-belt Asteroid          SPK-ID: 2059481
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04339155019976495 4.8631e-08  
a 2.519584821784865 1.1145e-08 au
q 2.410256130507821 1.2163e-07 au
i 1.036125849443719 4.4979e-06 deg
node 243.5415363763777 0.00025632 deg
peri 324.6068125526195 0.00026036 deg
M 358.6100926413625 4.4467e-05 deg
tp 2458606.139950021783
(2019-May-02.63995002)
0.00018043 TDB
period 1460.803840791531
4.00
9.6924e-06
2.654e-08
d
yr
n .2464396587326437 1.6351e-09 deg/d
Q 2.628913513061909 1.1628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      919  
   data-arc span      10260 days (28.09 yr)  
   first obs. used      1991-04-08  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54408  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:15:00  

Additional Information
 Earth MOID = 1.40486 au 
 Jupiter MOID = 2.33316 au 
 T_jup = 3.455 
[ 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 15.4   n/a MPO337725  
diameter diameter 4.341 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.085   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59481 (1999 HX8)          Discovered 1999-Apr-17 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 HX8 = 1991 GO5 = 2000 QR41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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