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2789 Foshan (1956 XA)
Classification: Main-belt Asteroid          SPK-ID: 2002789
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634072944654028 3.5686e-08  
a 2.227431624328114 5.5555e-09 au
q 1.863453048989979 7.9316e-08 au
i 3.817636743690215 3.7748e-06 deg
node 242.698406526693 4.9495e-05 deg
peri 141.2279806380855 5.0535e-05 deg
M 309.5074537776466 9.1847e-06 deg
tp 2458770.805929841256
(2019-Oct-14.30592984)
3.0894e-05 TDB
period 1214.24129559364
3.32
4.5427e-06
1.244e-08
d
yr
n .2964814335555906 1.1092e-09 deg/d
Q 2.591410199666248 6.4633e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2177  
   data-arc span      41316 days (113.12 yr)  
   first obs. used      1906-10-23  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45975  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:20:40  

Additional Information
 Earth MOID = .868362 au 
 Jupiter MOID = 2.86115 au 
 T_jup = 3.624 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO448940  
diameter diameter 4.766 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.264   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2789 Foshan (1956 XA)          Discovered 1956-Dec-06 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1956 XA = 1949 SV = 1969 RU = 1979 SD1 = 1981 EZ8 = A906 UJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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