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58554 (1997 HX)
Classification: Outer Main-belt Asteroid          SPK-ID: 2058554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08464379754746443 5.7013e-08  
a 3.240762588723756 2.2529e-08 au
q 2.966452136264426 1.7737e-07 au
i .7807565231996413 4.115e-06 deg
node 81.69428634937005 0.00045299 deg
peri 80.84485149860903 0.00045377 deg
M 64.816539864726 2.5979e-05 deg
tp 2458816.834636013242
(2019-Nov-29.33463601)
0.00015341 TDB
period 2130.930335428156
5.83
2.222e-05
6.084e-08
d
yr
n .168940295238543 1.7616e-09 deg/d
Q 3.515073041183086 2.4435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      9322 days (25.52 yr)  
   first obs. used      1994-12-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55132  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:30:53  

Additional Information
 Earth MOID = 1.97425 au 
 Jupiter MOID = 1.4576 au 
 T_jup = 3.178 
[ 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 14.96   n/a E2021B10  
diameter diameter 6.277 km 0.865 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58554 (1997 HX)          Discovered 1997-Apr-28 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 HX = 2000 WW139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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