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243453 (2009 HX85)
Classification: Jupiter Trojan          SPK-ID: 2243453
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179806741189319 6.0227e-08  
a 5.13959986780127 1.8266e-07 au
q 4.533226410696503 4.3264e-07 au
i 18.49221550251468 6.2934e-06 deg
node 193.7722218337464 1.6547e-05 deg
peri 93.97196948888495 3.9301e-05 deg
M 296.2431861407288 4.3017e-05 deg
tp 2459954.231205102186
(2023-Jan-09.73120510)
0.00053948 TDB
period 4255.909563418835
11.65
0.00022688
6.212e-07
d
yr
n .08458826359806543 4.5093e-09 deg/d
Q 5.745973324906037 2.0421e-07 au
  Orbit Determination Parameters
   # obs. used (total)      291  
   data-arc span      7140 days (19.55 yr)  
   first obs. used      2001-08-27  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53149  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 01:43:40  

Additional Information
 Earth MOID = 3.58167 au 
 Jupiter MOID = .10786 au 
 T_jup = 2.884 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.22   n/a E2021B55  
diameter diameter 15.137 km 0.526 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.037   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243453 (2009 HX85)          Discovered 2009-Apr-29 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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