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39781 (1997 HS13)
Classification: Main-belt Asteroid          SPK-ID: 2039781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2603279833849292 4.9207e-08  
a 3.073905769685125 2.1196e-08 au
q 2.273682079547698 1.5313e-07 au
i 12.42345675001612 5.5348e-06 deg
node 211.1808611083109 2.5624e-05 deg
peri 110.843232451247 2.7192e-05 deg
M 324.4186763968412 9.8108e-06 deg
tp 2458795.060131353565
(2019-Nov-07.56013135)
5.4563e-05 TDB
period 1968.494709990647
5.39
2.0361e-05
5.575e-08
d
yr
n .1828808572219686 1.8916e-09 deg/d
Q 3.874129459822553 2.6715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      8258 days (22.61 yr)  
   first obs. used      1997-04-06  
   last obs. used      2019-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:11:08  

Additional Information
 Earth MOID = 1.29691 au 
 Jupiter MOID = 1.78153 au 
 T_jup = 3.142 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO436049  
diameter diameter 5.252 km 0.375 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.193   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39781 (1997 HS13)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 HS13 = 1998 SD62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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