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39783 (1997 LB1)
Classification: Main-belt Asteroid          SPK-ID: 2039783
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379873763006444 4.0225e-08  
a 2.989723765061929 2.0333e-08 au
q 2.577179626857349 1.2503e-07 au
i 15.96425096783925 4.7612e-06 deg
node 96.81451093379424 1.924e-05 deg
peri 321.98574256 2.7841e-05 deg
M 344.8504961978221 2.0533e-05 deg
tp 2459079.958603867745
(2020-Aug-18.45860387)
0.00010793 TDB
period 1888.187082950916
5.17
1.9262e-05
5.274e-08
d
yr
n .1906590735899862 1.945e-09 deg/d
Q 3.402267903266509 2.3139e-08 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      8189 days (22.42 yr)  
   first obs. used      1997-06-01  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5171  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 02:32:56  

Additional Information
 Earth MOID = 1.60946 au 
 Jupiter MOID = 1.92625 au 
 T_jup = 3.184 
[ 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 MPO452720  
rotation period rot_per 2.15 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]

39783 (1997 LB1)          Discovered 1997-Jun-01 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 LB1 = 1999 XB105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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