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39980 (1998 HT13)
Classification: Main-belt Asteroid          SPK-ID: 2039980
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182217325360855 6.6649e-08  
a 2.534388526025089 9.7075e-09 au
q 2.234768723558827 1.7052e-07 au
i 6.119106320989485 7.4287e-06 deg
node 340.5313442369714 2.889e-05 deg
peri 312.1424488364103 4.5698e-05 deg
M 353.1011708133548 3.1288e-05 deg
tp 2458628.741067494320
(2019-May-25.24106749)
0.00012805 TDB
period 1473.69706118193
4.03
8.4671e-06
2.318e-08
d
yr
n .2442835841114279 1.4035e-09 deg/d
Q 2.834008328491351 1.0855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1079  
   data-arc span      8875 days (24.30 yr)  
   first obs. used      1995-08-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58282  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:12:26  

Additional Information
 Earth MOID = 1.22366 au 
 Jupiter MOID = 2.3592 au 
 T_jup = 3.431 
[ 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 15.2   n/a MPO439364  
diameter diameter 2.513 km 0.449 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.255   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39980 (1998 HT13)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HT13 = 1999 RT14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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