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22570 Harleyzhang (1998 HN38)
Classification: Main-belt Asteroid          SPK-ID: 2022570
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620834588575928 1.7002e-08  
a 2.214346260456311 5.4903e-09 au
q 1.855437359453176 3.7279e-08 au
i 2.809665689276034 8.6579e-07 deg
node 12.54268037710853 2.0134e-05 deg
peri 246.397596341739 2.1931e-05 deg
M 276.9989346746046 6.3943e-06 deg
tp 2459477.990354893622
(2021-Sep-20.49035489)
2.1717e-05 TDB
period 1203.557175682888
3.30
4.4762e-06
1.226e-08
d
yr
n .2991133344336044 1.1124e-09 deg/d
Q 2.573255161459445 6.3802e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1809  
   data-arc span      14111 days (38.63 yr)  
   first obs. used      1982-07-27  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52339  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:41  

Additional Information
 Earth MOID = .840828 au 
 Jupiter MOID = 2.48574 au 
 T_jup = 3.636 
[ 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 14.46   n/a E2021B10  
diameter diameter 3.967 km 0.453 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22570 Harleyzhang           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Harley Huiyu Zhang (b. 1988) is a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors, for his physics project. He attends the Ward Melville High School, East Setauket, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060314/MPCPages.arcLast Updated: 2006-03-23

Alternate Designations
 1998 HN38 = 1982 OJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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