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JPL Small-Body Database Browser
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201284 (2002 SM4)
Classification: Main-belt Asteroid          SPK-ID: 2201284
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06283457954699231 1.1049e-07  
a 3.135412502645115 3.2301e-08 au
q 2.938400176335026 3.4325e-07 au
i 15.29487110405035 9.6775e-06 deg
node 8.343293840154297 2.0119e-05 deg
peri 4.577770544789202 5.366e-05 deg
M 62.63312479548244 4.6886e-05 deg
tp 2458647.689067429636
(2019-Jun-13.18906743)
0.00026362 TDB
period 2027.871611708126
5.55
3.1336e-05
8.579e-08
d
yr
n .1775260316883489 2.7433e-09 deg/d
Q 3.332424828955203 3.433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      296  
   data-arc span      6329 days (17.33 yr)  
   first obs. used      2002-09-27  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52926  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 00:01:04  

Additional Information
 Earth MOID = 1.93844 au 
 Jupiter MOID = 2.01678 au 
 T_jup = 3.154 
[ 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 15.1   n/a MPO454425  
diameter diameter 5.499 km 0.331 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201284 (2002 SM4)          Discovered 2002-Sep-27 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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