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JPL Small-Body Database Browser
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185538 Fangcheng (2007 XD28)
Classification: Main-belt Asteroid          SPK-ID: 2185538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1423620193221677 5.1806e-08  
a 2.663068171365063 2.2715e-08 au
q 2.28394840889694 1.4086e-07 au
i 6.958496243769096 6.0184e-06 deg
node 61.63794260903929 3.9652e-05 deg
peri 322.7928882444478 4.3427e-05 deg
M 13.09521995956293 1.9744e-05 deg
tp 2458942.759286020871
(2020-Apr-03.25928602)
8.668e-05 TDB
period 1587.346917170851
4.35
2.0309e-05
5.56e-08
d
yr
n .2267935232719213 2.9017e-09 deg/d
Q 3.042187933833186 2.5949e-08 au
  Orbit Determination Parameters
   # obs. used (total)      328  
   data-arc span      8060 days (22.07 yr)  
   first obs. used      1996-04-24  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57966  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 16:34:56  

Additional Information
 Earth MOID = 1.29286 au 
 Jupiter MOID = 2.4087 au 
 T_jup = 3.360 
[ 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 16.0   n/a MPO449930  

185538 Fangcheng           Discovered 2007 Dec. 14 at the XuYi Station of the Purple Mountain Observatory.
Astrophysicist Fang Cheng (b. 1938) has made essential contributions to the design and construction of the first solar-tower telescope in China and achieved important results in semiempirical solar atmospheric modeling, spectral diagnostics of non-thermal particles and the dynamic models of flares.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 2007 XD28 = 2004 CT60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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