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 ]  
100936 Mekong (1998 ME43)
Classification: Main-belt Asteroid          SPK-ID: 2100936
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131490188969878 3.5194e-08  
a 2.408559104712715 1.0974e-08 au
q 2.09185721288892 8.9774e-08 au
i 2.604358836126433 3.2586e-06 deg
node 283.4852803586979 0.00010568 deg
peri 358.2261646364776 0.00010755 deg
M 8.465527687237064 1.9037e-05 deg
tp 2459168.394020597026
(2020-Nov-14.89402060)
7.2236e-05 TDB
period 1365.319801918102
3.74
9.3313e-06
2.555e-08
d
yr
n .2636744881999408 1.8021e-09 deg/d
Q 2.725260996536509 1.2417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      729  
   data-arc span      10016 days (27.42 yr)  
   first obs. used      1993-01-21  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60745  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:26  

Additional Information
 Earth MOID = 1.07349 au 
 Jupiter MOID = 2.39665 au 
 T_jup = 3.508 
[ 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 16.12   n/a E2021B55  

100936 Mekong           Discovered 1998 June 26 by E. W. Elst at the European Southern Observatory.
The Mekong is a 4350-kilometre river flowing through China, Myanmar, Laos, Thailand, Cambodia and Vietnam.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-03-14

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1954-Jun-14 22:44 < 00:01 Amphi 0.0470665546853913 0.047056304771608 0.0470768048423227 3.72107162559997 3.72107159277589 2434908.447156732 0.955430124066895 538.042483328967 46.1947487688864 18.3885664192282 49629.1850226979 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34
1965-Jan-21 03:35 < 00:01 Hebe 0.0105387626896592 0.0105303162653075 0.0105472113406421 7.95511010364723 7.95511002949542 2438781.649478733 0.596793423279891 485.928438886636 34.9951233100449 -30.0031697405057 22696.1284470285 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34

Alternate Designations
 1998 ME43 = 2002 PR74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 05:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin