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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620834577717592 1.6719e-08  
a 2.214346260158187 5.4258e-09 au
q 1.855437361607785 3.677e-08 au
i 2.809665693281807 8.6555e-07 deg
node 12.54268152877604 2.0108e-05 deg
peri 246.397595307108 2.1894e-05 deg
M 276.9989347863384 6.3896e-06 deg
tp 2459477.990354464032
(2021-Sep-20.49035446)
2.1695e-05 TDB
period 1203.55717543983
3.30
4.4236e-06
1.211e-08
d
yr
n .2991133344940101 1.0994e-09 deg/d
Q 2.573255158708589 6.3052e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1835  
   data-arc span      14119 days (38.66 yr)  
   first obs. used      1982-07-27  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5267  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:20:53  

Additional Information
 Earth MOID = .840828 au 
 Jupiter MOID = 2.48574 au 
 T_jup = 3.636 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456780.5 (2014-May-03.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620292716081632 1.6697e-08  
q 1.855494373363508 3.669e-08 au
tp 2457071.061609470912
(2015-Feb-17.56160947)
2.0411e-05 TDB
node 12.57905826326642 2.0096e-05 deg
peri 246.3590112361558 2.1889e-05 deg
i 2.810988017763488 8.6569e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1835  
   data-arc span      14119 days (38.66 yr)  
   first obs. used      1982-07-27  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5267  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:20:53  

Additional Information
 Jupiter MOID = 2.48574 au 
 T_jup = 3.636 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.787830122548427E-16 -6.079978258813347E-16 -3.682952274511116E-14 1.123901757450584E-14 -4.98526979688788E-14 -1.095484478559179E-16
q -6.079978258813347E-16 1.346155157122316E-15 7.550772847008636E-14 -2.307754653491777E-14 1.061808801219513E-13 2.140298892487712E-16
tp -3.682952274511116E-14 7.550772847008636E-14 4.166269948291057E-10 -1.720209547494981E-11 1.628227514557812E-10 -6.096989950983537E-12
node 1.123901757450584E-14 -2.307754653491777E-14 -1.720209547494981E-11 4.038520483059087E-10 -4.144176053775398E-10 -2.735445817007963E-12
peri -4.98526979688788E-14 1.061808801219513E-13 1.628227514557812E-10 -4.144176053775398E-10 4.791412125846979E-10 9.770722024819195E-13
i -1.095484478559179E-16 2.140298892487712E-16 -6.096989950983537E-12 -2.735445817007963E-12 9.770722024819195E-13 7.494220317521123E-13

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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