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3509 Sanshui (1978 UH2)
Classification: Main-belt Asteroid          SPK-ID: 2003509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1512261530916625 1.5459e-08  
a 2.598911443594025 7.7884e-09 au
q 2.205888063753401 3.9711e-08 au
i 12.80105444368631 3.8494e-07 deg
node 219.8017247154172 3.5163e-06 deg
peri 139.2511787121976 9.7853e-06 deg
M 58.32412625646951 6.9587e-06 deg
tp 2458952.568681689863
(2020-Apr-13.06868169)
2.936e-05 TDB
period 1530.331962439796
4.19
6.8792e-06
1.883e-08
d
yr
n .2352430772118586 1.0575e-09 deg/d
Q 2.991934823434649 8.9663e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2673  
   data-arc span      23165 days (63.42 yr)  
   first obs. used      1957-10-21  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:01:44  

Additional Information
 Earth MOID = 1.2193 au 
 Jupiter MOID = 2.53476 au 
 T_jup = 3.365 
[ 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 12.23   n/a MPCxxxxx  
diameter diameter 9.320 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 13.68 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Brinsfield, J.W. (2008) Minor Planet Bull. 35, 86-87.]
geometric albedo albedo 0.322   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3509 Sanshui (1978 UH2)          Discovered 1978-Oct-28 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 UH2 = 1957 UB1 = 1982 UH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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