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2903 Zhuhai (1981 UV9)
Classification: Main-belt Asteroid          SPK-ID: 2002903
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05861136251340317 2.7857e-08  
a 2.561314956982157 9.8875e-09 au
q 2.411192797527475 7.0834e-08 au
i 14.34941565051669 4.3162e-06 deg
node 232.5618438361215 1.424e-05 deg
peri 243.58482518035 5.3163e-05 deg
M 69.00897194762126 4.8122e-05 deg
tp 2458713.490704857370
(2019-Aug-17.99070486)
0.0002007 TDB
period 1497.245116617162
4.10
8.6698e-06
2.374e-08
d
yr
n .2404415923648994 1.3923e-09 deg/d
Q 2.711437116436841 1.0467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2752  
   data-arc span      23742 days (65.00 yr)  
   first obs. used      1955-06-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42984  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:51:03  

Additional Information
 Earth MOID = 1.46002 au 
 Jupiter MOID = 2.45228 au 
 T_jup = 3.389 
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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 11.7   n/a MPO313442  
diameter diameter 13.581 km 0.896 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.263 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Bin, L.; Haibin, Z.; Jingshen, Y. (2011) Minor Planet Bull. 38, 179-180.]
[Moravec, P.; Cochren, J.; Gerhardt, M.; Harris, A.; et al. (2012) Minor Planet Bull. 39, 213-216.]
geometric albedo albedo 0.276   0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2903 Zhuhai (1981 UV9)          Discovered 1981-Oct-23 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1981 UV9 = 1955 MC = 1973 UK4 = 1975 GC = 1977 TN7 = 1977 VL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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