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 ]  
102880 (1999 WA18)
Classification: Main-belt Asteroid          SPK-ID: 2102880
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2169843284021465 3.2054e-08  
a 2.374871249097505 9.0823e-09 au
q 1.859561406070516 7.9209e-08 au
i 1.719135839034444 4.2499e-06 deg
node 69.14740935747723 0.00016741 deg
peri 228.8996530590613 0.00016797 deg
M 1.568630787796189 1.362e-05 deg
tp 2459194.675257034265
(2020-Dec-11.17525703)
5.0574e-05 TDB
period 1336.775667020115
3.66
7.6684e-06
2.099e-08
d
yr
n .2693047224613963 1.5449e-09 deg/d
Q 2.890181092124494 1.1053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      590  
   data-arc span      9680 days (26.50 yr)  
   first obs. used      1994-03-06  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55286  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:03  

Additional Information
 Earth MOID = .842347 au 
 Jupiter MOID = 2.32802 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457382.5 (2015-Dec-26.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2164857503687923 3.2073e-08  
q 1.861473339574338 7.9138e-08 au
tp 2457857.471056684628
(2017-Apr-13.97105668)
5.0936e-05 TDB
node 69.17361595588085 0.00016733 deg
peri 228.7062595481712 0.00016788 deg
i 1.719389552889118 4.249e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      590  
   data-arc span      9680 days (26.50 yr)  
   first obs. used      1994-03-06  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55286  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:03  

Additional Information
 Jupiter MOID = 2.32802 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.028697379369679E-15 -2.529473687501638E-15 5.630785796954669E-13 -4.883712573190689E-15 1.749450369184781E-13 -5.107072790637439E-16
q -2.529473687501638E-15 6.262780975355735E-15 -1.36457088208958E-12 1.29143608694355E-14 -4.300852516483438E-13 1.267595451513349E-15
tp 5.630785796954669E-13 -1.36457088208958E-12 2.594472447729672E-9 1.808783303892263E-11 7.247698782447273E-10 -1.660448164336018E-12
node -4.883712573190689E-15 1.29143608694355E-14 1.808783303892263E-11 2.799856125039113E-8 -2.798074502680115E-8 -3.361674594027521E-10
peri 1.749450369184781E-13 -4.300852516483438E-13 7.247698782447273E-10 -2.798074502680115E-8 2.818476923342151E-8 3.355407752895929E-10
i -5.107072790637439E-16 1.267595451513349E-15 -1.660448164336018E-12 -3.361674594027521E-10 3.355407752895929E-10 1.805426443668499E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.41   n/a E2021B55  

102880 (1999 WA18)          Discovered 1999-Nov-30 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 WA18 = 1998 HW39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 16:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin