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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3758635272438753 4.7036e-08  
a 2.763633513532243 1.5294e-08 au
q 1.72488447312663 1.2561e-07 au
i 29.1584424378301 7.0374e-06 deg
node 227.0953367468048 9.5734e-06 deg
peri 79.42839529137329 1.2864e-05 deg
M 172.0611807424937 8.3791e-06 deg
tp 2458198.453587101446
(2018-Mar-20.95358710)
3.5664e-05 TDB
period 1678.104889188236
4.59
1.393e-05
3.814e-08
d
yr
n .2145277105855676 1.7808e-09 deg/d
Q 3.802382553937855 2.1043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      10459 days (28.64 yr)  
   first obs. used      1990-06-22  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46048  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:38:55  

Additional Information
 Earth MOID = .925863 au 
 Jupiter MOID = 2.14772 au 
 T_jup = 3.062 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456804.5 (2014-May-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3775341179910375 4.6947e-08  
q 1.718520327143774 1.2549e-07 au
tp 2456521.813753358628
(2013-Aug-17.31375336)
3.1478e-05 TDB
node 227.2313019526336 9.5812e-06 deg
peri 79.34414867395128 1.2811e-05 deg
i 29.15446166115273 7.0375e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      10459 days (28.64 yr)  
   first obs. used      1990-06-22  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46048  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:38:55  

Additional Information
 Jupiter MOID = 2.14772 au 
 T_jup = 3.062 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.204061564060923E-15 -5.878577658410438E-15 -2.352325422570286E-13 7.890226948302629E-15 -1.608585928879979E-13 -2.822437934226285E-14
q -5.878577658410438E-15 1.57468544467771E-14 6.703506560178686E-13 -2.128774724899339E-14 4.427685234044403E-13 7.760473195167954E-14
tp -2.352325422570286E-13 6.703506560178686E-13 9.908900991646788E-10 -4.667505964647473E-12 2.740532165608541E-10 3.101904528081284E-12
node 7.890226948302629E-15 -2.128774724899339E-14 -4.667505964647473E-12 9.179863599851008E-11 -8.119488164888922E-11 9.778429427200373E-12
peri -1.608585928879979E-13 4.427685234044403E-13 2.740532165608541E-10 -8.119488164888922E-11 1.641152647817802E-10 -6.526958347420043E-12
i -2.822437934226285E-14 7.760473195167954E-14 3.101904528081284E-12 9.778429427200373E-12 -6.526958347420043E-12 4.952587858505371E-11

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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