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18511 (1996 SH4)
Classification: Main-belt Asteroid          SPK-ID: 2018511
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04379275089019703 4.6769e-08  
a 2.630709924315404 2.0519e-08 au
q 2.51550389993549 1.3028e-07 au
i 28.8023183616672 7.6597e-06 deg
node 39.16431067517414 1.1271e-05 deg
peri 72.08459177541647 0.00013382 deg
M 138.3672326207923 0.00012743 deg
tp 2458401.483719825738
(2018-Oct-09.98371983)
0.00055453 TDB
period 1558.503821881956
4.27
1.8234e-05
4.992e-08
d
yr
n .2309907713702528 2.7025e-09 deg/d
Q 2.745915948695317 2.1417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      835  
   data-arc span      8269 days (22.64 yr)  
   first obs. used      1996-09-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:36:45  

Additional Information
 Earth MOID = 1.5882 au 
 Jupiter MOID = 2.36575 au 
 T_jup = 3.223 
[ 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 14.8   n/a MPO435871  
diameter diameter 6.170 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18511 (1996 SH4)          Discovered 1996-Sep-19 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 SH4 = 1998 GR5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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