Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
3938 Chapront (1949 PL)
Classification: Main-belt Asteroid          SPK-ID: 2003938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04094971200080439 2.031e-08  
a 2.488707631832709 7.3647e-09 au
q 2.386795771054956 4.9618e-08 au
i 2.088754313084687 7.4423e-07 deg
node 157.8476667789307 3.7093e-05 deg
peri 75.43904107070838 5.152e-05 deg
M 148.9582629923548 2.4258e-05 deg
tp 2458607.135793484819
(2019-May-03.63579348)
9.6292e-05 TDB
period 1434.033332923792
3.93
6.3655e-06
1.743e-08
d
yr
n .2510401897465038 1.1143e-09 deg/d
Q 2.590619492610462 7.6663e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2453  
   data-arc span      26126 days (71.53 yr)  
   first obs. used      1949-08-02  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47701  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:44:56  

Additional Information
 Earth MOID = 1.37498 au 
 Jupiter MOID = 2.38111 au 
 T_jup = 3.472 
[ 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 13.78   n/a E2021B10  
diameter diameter 9.829 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3938 Chapront (1949 PL)          Discovered 1949-Aug-02 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1949 PL = 1980 NC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-06 01:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin