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JPL Small-Body Database Browser
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4730 Xingmingzhou (1980 XZ)
Classification: Main-belt Asteroid          SPK-ID: 2004730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04406153083534334 3.3357e-08  
a 3.124985988889761 1.9458e-08 au
q 2.987294322380279 1.0516e-07 au
i 11.98643383118459 4.321e-06 deg
node 80.58325948786899 2.0736e-05 deg
peri 205.5898190859808 5.9616e-05 deg
M 125.2277295617703 5.685e-05 deg
tp 2457898.610824931465
(2017-May-25.11082493)
0.00031814 TDB
period 2017.764786672387
5.52
1.8846e-05
5.16e-08
d
yr
n .1784152456113068 1.6664e-09 deg/d
Q 3.262677655399243 2.0315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      32090 days (87.86 yr)  
   first obs. used      1932-01-28  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44881  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:48:53  

Additional Information
 Earth MOID = 1.97459 au 
 Jupiter MOID = 1.82608 au 
 T_jup = 3.180 
[ 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 11.4   n/a MPO384796  
diameter diameter 24.628 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.396 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Tan, H.; Gao, X. (2019) Minor Planet Bull. 46, 82-84.]
geometric albedo albedo 0.104   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4730 Xingmingzhou           Discovered 1980 Dec. 7 at the Purple Mountain Observatory.
Xing-Ming Zhou (1965-2004), a meteorologist and comet hunter from Xinjiang province, detected 64 near-sun comets in SOHO's LASCO images and one in SOHO's SWAN images. He also independently discovered two other comets. A tireless and precise observer, he chronicled his observations on the Silk Road Astronomy website.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

[ show close-approach data ]
Alternate Designations
 1980 XZ = 1932 BE = 1983 GR2 = 1983 JJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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