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22572 Yuanzhang (1998 HJ39)
Classification: Main-belt Asteroid          SPK-ID: 2022572
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774364857764391 3.6252e-08  
a 2.408365339783947 1.0244e-08 au
q 1.981033457426904 9.0883e-08 au
i 1.793376737163997 4.0362e-06 deg
node 189.3127572555518 0.00011593 deg
peri 60.98112258930315 0.00011664 deg
M 348.6039571557641 1.6488e-05 deg
tp 2459243.714903945114
(2021-Jan-29.21490395)
6.2683e-05 TDB
period 1365.155048369253
3.74
8.7098e-06
2.385e-08
d
yr
n .2637063097192061 1.6825e-09 deg/d
Q 2.835697222140991 1.2061e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      10008 days (27.40 yr)  
   first obs. used      1992-11-26  
   last obs. used      2020-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52628  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:44  

Additional Information
 Earth MOID = .966134 au 
 Jupiter MOID = 2.19806 au 
 T_jup = 3.499 
[ 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 15.30   n/a E2021B10  
diameter diameter 1.991 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.213   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22572 Yuanzhang           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Yuan Zhang (b. 1988) is a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors, for her medicine and health project. She attends the Montgomery Blair High School, Silver Spring, Maryland.
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

[ show close-approach data ]
Alternate Designations
 1998 HJ39 = 1999 TO146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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