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20903 (2000 XH9)
Classification: Main-belt Asteroid          SPK-ID: 2020903
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1851534375804312 3.6803e-08  
a 2.585075963492409 1.6527e-08 au
q 2.106440262445245 1.0001e-07 au
i 14.19574637359842 5.3706e-06 deg
node 53.26181933239356 1.3415e-05 deg
peri 289.1796643667612 2.1283e-05 deg
M 353.1819837275903 1.62e-05 deg
tp 2459029.251726185507
(2020-Jun-28.75172619)
6.829e-05 TDB
period 1518.128002813396
4.16
1.4559e-05
3.986e-08
d
yr
n .2371341542563261 2.2741e-09 deg/d
Q 3.063711664539574 1.9587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1632  
   data-arc span      11942 days (32.70 yr)  
   first obs. used      1987-11-23  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:40:05  

Additional Information
 Earth MOID = 1.14924 au 
 Jupiter MOID = 2.5159 au 
 T_jup = 3.356 
[ 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 13.6   n/a MPO395203  
diameter diameter 4.234 km 0.495 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.472   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20903 (2000 XH9)          Discovered 2000-Dec-01 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 XH9 = 1987 WP3 = 1996 CH7 = 1998 HN105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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