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39784 (1997 LB2)
Classification: Main-belt Asteroid          SPK-ID: 2039784
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08577775917358417 4.1941e-08  
a 3.12695723397583 2.6764e-08 au
q 2.858733849413754 1.3657e-07 au
i 14.87529175698396 6.4195e-06 deg
node 178.9913524188703 1.7521e-05 deg
peri 288.7585091311839 4.2226e-05 deg
M 121.01114500139 3.7391e-05 deg
tp 2457921.602500996138
(2017-Jun-17.10250100)
0.00021034 TDB
period 2019.67430056614
5.53
2.593e-05
7.099e-08
d
yr
n .1782465617842874 2.2885e-09 deg/d
Q 3.395180618537906 2.906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      10257 days (28.08 yr)  
   first obs. used      1991-04-09  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59792  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:11:09  

Additional Information
 Earth MOID = 1.91651 au 
 Jupiter MOID = 1.75726 au 
 T_jup = 3.157 
[ 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 14.7   n/a MPO436049  
diameter diameter 6.268 km 0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39784 (1997 LB2)          Discovered 1997-Jun-02 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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