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JPL Small-Body Database Browser
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19118 (1981 SD2)
Classification: Main-belt Asteroid          SPK-ID: 2019118
[ 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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310308043432667 3.6514e-08  
a 2.384217393592682 7.8903e-09 au
q 2.071811470781026 8.6579e-08 au
i 6.395726446719538 3.7956e-06 deg
node 35.04192795932812 3.0667e-05 deg
peri 346.1421305241083 3.3183e-05 deg
M 165.127533034494 1.2276e-05 deg
tp 2458383.714441204394
(2018-Sep-22.21444120)		 4.5593e-05 TDB
period 1344.674610502629
3.68		 6.6751e-06
1.828e-08		 d
yr
n .2677227614682445 1.329e-09 deg/d
Q 2.696623316404338 8.9242e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2054  
   data-arc span      14028 days (38.41 yr)  
   first obs. used      1981-09-08  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47331  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:42:09  

Additional Information
 Earth MOID = 1.07552 au 
 Jupiter MOID = 2.75744 au 
 T_jup = 3.516 
[ 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 MPO347673  
diameter diameter 4.594 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19118 (1981 SD2)          Discovered 1981-Sep-26 by Thomas, N. G. at Anderson Mesa
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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